com.mysql.jdbc.ConnectionImpl Maven / Gradle / Ivy
/*
Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved.
The MySQL Connector/J is licensed under the terms of the GPLv2
, like most MySQL Connectors.
There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
this software, see the FLOSS License Exception
.
This program is free software; you can redistribute it and/or modify it under the terms
of the GNU General Public License as published by the Free Software Foundation; version 2
of the License.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this
program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.jdbc;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import java.sql.Blob;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.SQLPermission;
import java.sql.SQLWarning;
import java.sql.Savepoint;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Enumeration;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;
import java.util.Random;
import java.util.Stack;
import java.util.TimeZone;
import java.util.Timer;
import java.util.TreeMap;
import java.util.concurrent.Executor;
import com.mysql.jdbc.PreparedStatement.ParseInfo;
import com.mysql.jdbc.log.Log;
import com.mysql.jdbc.log.LogFactory;
import com.mysql.jdbc.log.LogUtils;
import com.mysql.jdbc.log.NullLogger;
import com.mysql.jdbc.profiler.ProfilerEvent;
import com.mysql.jdbc.profiler.ProfilerEventHandler;
import com.mysql.jdbc.util.LRUCache;
/**
* A Connection represents a session with a specific database. Within the context of a Connection, SQL statements are executed and results are returned.
*
*
* A Connection's database is able to provide information describing its tables, its supported SQL grammar, its stored procedures, the capabilities of this
* connection, etc. This information is obtained with the getMetaData method.
*
*/
public class ConnectionImpl extends ConnectionPropertiesImpl implements MySQLConnection {
private static final long serialVersionUID = 2877471301981509474L;
private static final SQLPermission SET_NETWORK_TIMEOUT_PERM = new SQLPermission("setNetworkTimeout");
private static final SQLPermission ABORT_PERM = new SQLPermission("abort");
static final String JDBC_LOCAL_CHARACTER_SET_RESULTS = "jdbc.local.character_set_results";
public String getHost() {
return this.host;
}
private MySQLConnection proxy = null;
private InvocationHandler realProxy = null;
public boolean isProxySet() {
return this.proxy != null;
}
public void setProxy(MySQLConnection proxy) {
this.proxy = proxy;
}
public void setRealProxy(InvocationHandler proxy) {
this.realProxy = proxy;
}
// We have to proxy ourselves when we're load balanced so that statements get routed to the right physical connection
// (when load balanced, we're a "logical" connection)
private MySQLConnection getProxy() {
return (this.proxy != null) ? this.proxy : (MySQLConnection) this;
}
public MySQLConnection getLoadBalanceSafeProxy() {
return this.getProxy();
}
public Object getConnectionMutex() {
return (this.realProxy != null) ? this.realProxy : this;
}
class ExceptionInterceptorChain implements ExceptionInterceptor {
List interceptors;
ExceptionInterceptorChain(String interceptorClasses) throws SQLException {
this.interceptors = Util.loadExtensions(ConnectionImpl.this, ConnectionImpl.this.props, interceptorClasses, "Connection.BadExceptionInterceptor",
this);
}
void addRingZero(ExceptionInterceptor interceptor) throws SQLException {
this.interceptors.add(0, interceptor);
}
public SQLException interceptException(SQLException sqlEx, Connection conn) {
if (this.interceptors != null) {
Iterator iter = this.interceptors.iterator();
while (iter.hasNext()) {
sqlEx = ((ExceptionInterceptor) iter.next()).interceptException(sqlEx, ConnectionImpl.this);
}
}
return sqlEx;
}
public void destroy() {
if (this.interceptors != null) {
Iterator iter = this.interceptors.iterator();
while (iter.hasNext()) {
((ExceptionInterceptor) iter.next()).destroy();
}
}
}
public void init(Connection conn, Properties properties) throws SQLException {
if (this.interceptors != null) {
Iterator iter = this.interceptors.iterator();
while (iter.hasNext()) {
((ExceptionInterceptor) iter.next()).init(conn, properties);
}
}
}
}
/**
* Used as a key for caching callable statements which (may) depend on
* current catalog...In 5.0.x, they don't (currently), but stored procedure
* names soon will, so current catalog is a (hidden) component of the name.
*/
static class CompoundCacheKey {
String componentOne;
String componentTwo;
int hashCode;
CompoundCacheKey(String partOne, String partTwo) {
this.componentOne = partOne;
this.componentTwo = partTwo;
// Handle first component (in most cases, currentCatalog being NULL....
this.hashCode = (((this.componentOne != null) ? this.componentOne : "") + this.componentTwo).hashCode();
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (obj instanceof CompoundCacheKey) {
CompoundCacheKey another = (CompoundCacheKey) obj;
boolean firstPartEqual = false;
if (this.componentOne == null) {
firstPartEqual = (another.componentOne == null);
} else {
firstPartEqual = this.componentOne.equals(another.componentOne);
}
return (firstPartEqual && this.componentTwo.equals(another.componentTwo));
}
return false;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return this.hashCode;
}
}
/**
* Marker for character set converter not being available (not written,
* multibyte, etc) Used to prevent multiple instantiation requests.
*/
private static final Object CHARSET_CONVERTER_NOT_AVAILABLE_MARKER = new Object();
/**
* The mapping between MySQL charset names and Java charset names.
* Initialized by loadCharacterSetMapping()
*/
public static Map charsetMap;
/** Default logger class name */
protected static final String DEFAULT_LOGGER_CLASS = "com.mysql.jdbc.log.StandardLogger";
private final static int HISTOGRAM_BUCKETS = 20;
/** Logger instance name */
private static final String LOGGER_INSTANCE_NAME = "MySQL";
/**
* Map mysql transaction isolation level name to
* java.sql.Connection.TRANSACTION_XXX
*/
private static Map mapTransIsolationNameToValue = null;
/** Null logger shared by all connections at startup */
private static final Log NULL_LOGGER = new NullLogger(LOGGER_INSTANCE_NAME);
protected static Map roundRobinStatsMap;
/**
* Actual collation index to collation name map for given server URLs.
*/
private static final Map> dynamicIndexToCollationMapByUrl = new HashMap>();
/**
* Actual collation index to mysql charset name map for given server URLs.
*/
private static final Map> dynamicIndexToCharsetMapByUrl = new HashMap>();
/**
* Actual collation index to mysql charset name map of user defined charsets for given server URLs.
*/
private static final Map> customIndexToCharsetMapByUrl = new HashMap>();
/**
* Actual mysql charset name to mblen map of user defined charsets for given server URLs.
*/
private static final Map> customCharsetToMblenMapByUrl = new HashMap>();
private CacheAdapter> serverConfigCache;
private long queryTimeCount;
private double queryTimeSum;
private double queryTimeSumSquares;
private double queryTimeMean;
private transient Timer cancelTimer;
private List connectionLifecycleInterceptors;
private static final Constructor JDBC_4_CONNECTION_CTOR;
private static final int DEFAULT_RESULT_SET_TYPE = ResultSet.TYPE_FORWARD_ONLY;
private static final int DEFAULT_RESULT_SET_CONCURRENCY = ResultSet.CONCUR_READ_ONLY;
static {
mapTransIsolationNameToValue = new HashMap(8);
mapTransIsolationNameToValue.put("READ-UNCOMMITED", TRANSACTION_READ_UNCOMMITTED);
mapTransIsolationNameToValue.put("READ-UNCOMMITTED", TRANSACTION_READ_UNCOMMITTED);
mapTransIsolationNameToValue.put("READ-COMMITTED", TRANSACTION_READ_COMMITTED);
mapTransIsolationNameToValue.put("REPEATABLE-READ", TRANSACTION_REPEATABLE_READ);
mapTransIsolationNameToValue.put("SERIALIZABLE", TRANSACTION_SERIALIZABLE);
if (Util.isJdbc4()) {
try {
JDBC_4_CONNECTION_CTOR = Class.forName("com.mysql.jdbc.JDBC4Connection").getConstructor(
new Class[] { String.class, Integer.TYPE, Properties.class, String.class, String.class });
} catch (SecurityException e) {
throw new RuntimeException(e);
} catch (NoSuchMethodException e) {
throw new RuntimeException(e);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
} else {
JDBC_4_CONNECTION_CTOR = null;
}
}
protected static SQLException appendMessageToException(SQLException sqlEx, String messageToAppend, ExceptionInterceptor interceptor) {
String origMessage = sqlEx.getMessage();
String sqlState = sqlEx.getSQLState();
int vendorErrorCode = sqlEx.getErrorCode();
StringBuffer messageBuf = new StringBuffer(origMessage.length() + messageToAppend.length());
messageBuf.append(origMessage);
messageBuf.append(messageToAppend);
SQLException sqlExceptionWithNewMessage = SQLError.createSQLException(messageBuf.toString(), sqlState, vendorErrorCode, interceptor);
//
// Try and maintain the original stack trace, only works on JDK-1.4 and newer
//
try {
// Have to do this with reflection, otherwise older JVMs croak
Method getStackTraceMethod = null;
Method setStackTraceMethod = null;
Object theStackTraceAsObject = null;
Class stackTraceElementClass = Class.forName("java.lang.StackTraceElement");
Class stackTraceElementArrayClass = Array.newInstance(stackTraceElementClass, new int[] { 0 }).getClass();
getStackTraceMethod = Throwable.class.getMethod("getStackTrace", new Class[] {});
setStackTraceMethod = Throwable.class.getMethod("setStackTrace", new Class[] { stackTraceElementArrayClass });
if (getStackTraceMethod != null && setStackTraceMethod != null) {
theStackTraceAsObject = getStackTraceMethod.invoke(sqlEx, new Object[0]);
setStackTraceMethod.invoke(sqlExceptionWithNewMessage, new Object[] { theStackTraceAsObject });
}
} catch (NoClassDefFoundError noClassDefFound) {
} catch (NoSuchMethodException noSuchMethodEx) {
} catch (Throwable catchAll) {
}
return sqlExceptionWithNewMessage;
}
public Timer getCancelTimer() {
synchronized (getConnectionMutex()) {
if (this.cancelTimer == null) {
boolean createdNamedTimer = false;
// Use reflection magic to try this on JDK's 1.5 and newer, fallback to non-named timer on older VMs.
try {
Constructor ctr = Timer.class.getConstructor(new Class[] { String.class, Boolean.TYPE });
this.cancelTimer = ctr.newInstance(new Object[] { "MySQL Statement Cancellation Timer", Boolean.TRUE });
createdNamedTimer = true;
} catch (Throwable t) {
createdNamedTimer = false;
}
if (!createdNamedTimer) {
this.cancelTimer = new Timer(true);
}
}
return this.cancelTimer;
}
}
/**
* Creates a connection instance -- We need to provide factory-style methods
* so we can support both JDBC3 (and older) and JDBC4 runtimes, otherwise
* the class verifier complains when it tries to load JDBC4-only interface
* classes that are present in JDBC4 method signatures.
*/
protected static Connection getInstance(String hostToConnectTo, int portToConnectTo, Properties info, String databaseToConnectTo, String url)
throws SQLException {
if (!Util.isJdbc4()) {
return new ConnectionImpl(hostToConnectTo, portToConnectTo, info, databaseToConnectTo, url);
}
return (Connection) Util.handleNewInstance(JDBC_4_CONNECTION_CTOR, new Object[] { hostToConnectTo, Integer.valueOf(portToConnectTo), info,
databaseToConnectTo, url }, null);
}
private static final Random random = new Random();
/**
* @param url
* @param hostList
*/
protected static synchronized int getNextRoundRobinHostIndex(String url, List hostList) {
// we really do "random" here, because you don't get even distribution when this is coupled with connection pools
int indexRange = hostList.size();
int index = random.nextInt(indexRange);
return index;
}
private static boolean nullSafeCompare(String s1, String s2) {
if (s1 == null && s2 == null) {
return true;
}
if (s1 == null && s2 != null) {
return false;
}
return s1 != null && s1.equals(s2);
}
/** Are we in autoCommit mode? */
private boolean autoCommit = true;
/** A cache of SQL to parsed prepared statement parameters. */
private CacheAdapter cachedPreparedStatementParams;
/**
* For servers > 4.1.0, what character set is the metadata returned in?
*/
private String characterSetMetadata = null;
/**
* The character set we want results and result metadata returned in (null ==
* results in any charset, metadata in UTF-8).
*/
private String characterSetResultsOnServer = null;
/**
* Holds cached mappings to charset converters to avoid static
* synchronization and at the same time save memory (each charset converter
* takes approx 65K of static data).
*/
private Map charsetConverterMap = new HashMap(CharsetMapping.getNumberOfCharsetsConfigured());
/** The point in time when this connection was created */
private long connectionCreationTimeMillis = 0;
/** ID used when profiling */
private long connectionId;
/** The database we're currently using (called Catalog in JDBC terms). */
private String database = null;
/** Internal DBMD to use for various database-version specific features */
private DatabaseMetaData dbmd = null;
private TimeZone defaultTimeZone;
/** The event sink to use for profiling */
private ProfilerEventHandler eventSink;
/** Why was this connection implicitly closed, if known? (for diagnostics) */
private Throwable forceClosedReason;
/** Does the server suuport isolation levels? */
private boolean hasIsolationLevels = false;
/** Does this version of MySQL support quoted identifiers? */
private boolean hasQuotedIdentifiers = false;
/** The hostname we're connected to */
private String host = null;
/**
* We need this 'bootstrapped', because 4.1 and newer will send fields back
* with this even before we fill this dynamically from the server.
*/
public Map indexToMysqlCharset = new HashMap();
public Map indexToCustomMysqlCharset = null; //new HashMap();
private Map mysqlCharsetToCustomMblen = null; //new HashMap();
/** The I/O abstraction interface (network conn to MySQL server */
private transient MysqlIO io = null;
private boolean isClientTzUTC = false;
/** Has this connection been closed? */
private boolean isClosed = true;
/** Is this connection associated with a global tx? */
private boolean isInGlobalTx = false;
/** Is this connection running inside a JDK-1.3 VM? */
private boolean isRunningOnJDK13 = false;
/** isolation level */
private int isolationLevel = java.sql.Connection.TRANSACTION_READ_COMMITTED;
private boolean isServerTzUTC = false;
/** When did the last query finish? */
private long lastQueryFinishedTime = 0;
/** The logger we're going to use */
private transient Log log = NULL_LOGGER;
/**
* If gathering metrics, what was the execution time of the longest query so
* far ?
*/
private long longestQueryTimeMs = 0;
/** Is the server configured to use lower-case table names only? */
private boolean lowerCaseTableNames = false;
/** When did the master fail? */
// private long masterFailTimeMillis = 0L;
private long maximumNumberTablesAccessed = 0;
/** The max-rows setting for current session */
private int sessionMaxRows = -1;
/** When was the last time we reported metrics? */
private long metricsLastReportedMs;
private long minimumNumberTablesAccessed = Long.MAX_VALUE;
/** The JDBC URL we're using */
private String myURL = null;
/** Does this connection need to be tested? */
private boolean needsPing = false;
private int netBufferLength = 16384;
private boolean noBackslashEscapes = false;
private long numberOfPreparedExecutes = 0;
private long numberOfPrepares = 0;
private long numberOfQueriesIssued = 0;
private long numberOfResultSetsCreated = 0;
private long[] numTablesMetricsHistBreakpoints;
private int[] numTablesMetricsHistCounts;
private long[] oldHistBreakpoints = null;
private int[] oldHistCounts = null;
/** A map of currently open statements */
private Map openStatements;
private LRUCache parsedCallableStatementCache;
private boolean parserKnowsUnicode = false;
/** The password we used */
private String password = null;
private long[] perfMetricsHistBreakpoints;
private int[] perfMetricsHistCounts;
/** Point of origin where this Connection was created */
private String pointOfOrigin;
/** The port number we're connected to (defaults to 3306) */
private int port = 3306;
/** Properties for this connection specified by user */
protected Properties props = null;
/** Should we retrieve 'info' messages from the server? */
private boolean readInfoMsg = false;
/** Are we in read-only mode? */
private boolean readOnly = false;
/** Cache of ResultSet metadata */
protected LRUCache resultSetMetadataCache;
/** The timezone of the server */
private TimeZone serverTimezoneTZ = null;
/** The map of server variables that we retrieve at connection init. */
private Map serverVariables = null;
private long shortestQueryTimeMs = Long.MAX_VALUE;
private double totalQueryTimeMs = 0;
/** Are transactions supported by the MySQL server we are connected to? */
private boolean transactionsSupported = false;
/**
* The type map for UDTs (not implemented, but used by some third-party
* vendors, most notably IBM WebSphere)
*/
private Map> typeMap;
/** Has ANSI_QUOTES been enabled on the server? */
private boolean useAnsiQuotes = false;
/** The user we're connected as */
private String user = null;
/**
* Should we use server-side prepared statements? (auto-detected, but can be
* disabled by user)
*/
private boolean useServerPreparedStmts = false;
private LRUCache serverSideStatementCheckCache;
private LRUCache serverSideStatementCache;
private Calendar sessionCalendar;
private Calendar utcCalendar;
private String origHostToConnectTo;
// we don't want to be able to publicly clone this...
private int origPortToConnectTo;
private String origDatabaseToConnectTo;
private String errorMessageEncoding = "Cp1252"; // to begin with, changes after we talk to the server
private boolean usePlatformCharsetConverters;
/*
* For testing failover scenarios
*/
private boolean hasTriedMasterFlag = false;
/**
* The comment (if any) that we'll prepend to all statements
* sent to the server (to show up in "SHOW PROCESSLIST")
*/
private String statementComment = null;
private boolean storesLowerCaseTableName;
private List statementInterceptors;
/**
* If a CharsetEncoder is required for escaping. Needed for SJIS and related
* problems with \u00A5.
*/
private boolean requiresEscapingEncoder;
private String hostPortPair;
/**
* '
* For the delegate only
*/
protected ConnectionImpl() {
}
/**
* Creates a connection to a MySQL Server.
*
* @param hostToConnectTo
* the hostname of the database server
* @param portToConnectTo
* the port number the server is listening on
* @param info
* a Properties[] list holding the user and password
* @param databaseToConnectTo
* the database to connect to
* @param url
* the URL of the connection
* @param d
* the Driver instantation of the connection
* @exception SQLException
* if a database access error occurs
*/
public ConnectionImpl(String hostToConnectTo, int portToConnectTo, Properties info, String databaseToConnectTo, String url) throws SQLException {
this.connectionCreationTimeMillis = System.currentTimeMillis();
if (databaseToConnectTo == null) {
databaseToConnectTo = "";
}
// Stash away for later, used to clone this connection for Statement.cancel and Statement.setQueryTimeout().
//
this.origHostToConnectTo = hostToConnectTo;
this.origPortToConnectTo = portToConnectTo;
this.origDatabaseToConnectTo = databaseToConnectTo;
try {
Blob.class.getMethod("truncate", new Class[] { Long.TYPE });
this.isRunningOnJDK13 = false;
} catch (NoSuchMethodException nsme) {
this.isRunningOnJDK13 = true;
}
this.sessionCalendar = new GregorianCalendar();
this.utcCalendar = new GregorianCalendar();
this.utcCalendar.setTimeZone(TimeZone.getTimeZone("GMT"));
//
// Normally, this code would be in initializeDriverProperties, but we need to do this as early as possible, so we can start logging to the 'correct'
// place as early as possible...this.log points to 'NullLogger' for every connection at startup to avoid NPEs and the overhead of checking for NULL at
// every logging call.
//
// We will reset this to the configured logger during properties initialization.
//
this.log = LogFactory.getLogger(getLogger(), LOGGER_INSTANCE_NAME, getExceptionInterceptor());
// We store this per-connection, due to static synchronization issues in Java's built-in TimeZone class...
this.defaultTimeZone = Util.getDefaultTimeZone();
this.isClientTzUTC = "GMT".equalsIgnoreCase(this.defaultTimeZone.getID());
this.openStatements = new HashMap();
if (NonRegisteringDriver.isHostPropertiesList(hostToConnectTo)) {
Properties hostSpecificProps = NonRegisteringDriver.expandHostKeyValues(hostToConnectTo);
Enumeration propertyNames = hostSpecificProps.propertyNames();
while (propertyNames.hasMoreElements()) {
String propertyName = propertyNames.nextElement().toString();
String propertyValue = hostSpecificProps.getProperty(propertyName);
info.setProperty(propertyName, propertyValue);
}
} else {
if (hostToConnectTo == null) {
this.host = "localhost";
this.hostPortPair = this.host + ":" + portToConnectTo;
} else {
this.host = hostToConnectTo;
if (hostToConnectTo.indexOf(":") == -1) {
this.hostPortPair = this.host + ":" + portToConnectTo;
} else {
this.hostPortPair = this.host;
}
}
}
this.port = portToConnectTo;
this.database = databaseToConnectTo;
this.myURL = url;
this.user = info.getProperty(NonRegisteringDriver.USER_PROPERTY_KEY);
this.password = info.getProperty(NonRegisteringDriver.PASSWORD_PROPERTY_KEY);
if ((this.user == null) || this.user.equals("")) {
this.user = "";
}
if (this.password == null) {
this.password = "";
}
this.props = info;
initializeDriverProperties(info);
if (getUseUsageAdvisor()) {
this.pointOfOrigin = LogUtils.findCallingClassAndMethod(new Throwable());
} else {
this.pointOfOrigin = "";
}
try {
this.dbmd = getMetaData(false, false);
initializeSafeStatementInterceptors();
createNewIO(false);
unSafeStatementInterceptors();
} catch (SQLException ex) {
cleanup(ex);
// don't clobber SQL exceptions
throw ex;
} catch (Exception ex) {
cleanup(ex);
StringBuffer mesg = new StringBuffer(128);
if (!getParanoid()) {
mesg.append("Cannot connect to MySQL server on ");
mesg.append(this.host);
mesg.append(":");
mesg.append(this.port);
mesg.append(".\n\n");
mesg.append("Make sure that there is a MySQL server ");
mesg.append("running on the machine/port you are trying ");
mesg.append("to connect to and that the machine this software is running on ");
mesg.append("is able to connect to this host/port (i.e. not firewalled). ");
mesg.append("Also make sure that the server has not been started with the --skip-networking ");
mesg.append("flag.\n\n");
} else {
mesg.append("Unable to connect to database.");
}
SQLException sqlEx = SQLError.createSQLException(mesg.toString(), SQLError.SQL_STATE_COMMUNICATION_LINK_FAILURE, getExceptionInterceptor());
sqlEx.initCause(ex);
throw sqlEx;
}
NonRegisteringDriver.trackConnection(this);
}
public void unSafeStatementInterceptors() throws SQLException {
ArrayList unSafedStatementInterceptors = new ArrayList(this.statementInterceptors.size());
for (int i = 0; i < this.statementInterceptors.size(); i++) {
NoSubInterceptorWrapper wrappedInterceptor = (NoSubInterceptorWrapper) this.statementInterceptors.get(i);
unSafedStatementInterceptors.add(wrappedInterceptor.getUnderlyingInterceptor());
}
this.statementInterceptors = unSafedStatementInterceptors;
if (this.io != null) {
this.io.setStatementInterceptors(this.statementInterceptors);
}
}
public void initializeSafeStatementInterceptors() throws SQLException {
this.isClosed = false;
List unwrappedInterceptors = Util.loadExtensions(this, this.props, getStatementInterceptors(), "MysqlIo.BadStatementInterceptor",
getExceptionInterceptor());
this.statementInterceptors = new ArrayList(unwrappedInterceptors.size());
for (int i = 0; i < unwrappedInterceptors.size(); i++) {
Extension interceptor = unwrappedInterceptors.get(i);
// adapt older versions of statement interceptors, handle the case where something wants v2 functionality but wants to run with an older driver
if (interceptor instanceof StatementInterceptor) {
if (ReflectiveStatementInterceptorAdapter.getV2PostProcessMethod(interceptor.getClass()) != null) {
this.statementInterceptors.add(new NoSubInterceptorWrapper(new ReflectiveStatementInterceptorAdapter((StatementInterceptor) interceptor)));
} else {
this.statementInterceptors.add(new NoSubInterceptorWrapper(new V1toV2StatementInterceptorAdapter((StatementInterceptor) interceptor)));
}
} else {
this.statementInterceptors.add(new NoSubInterceptorWrapper((StatementInterceptorV2) interceptor));
}
}
}
public List getStatementInterceptorsInstances() {
return this.statementInterceptors;
}
private void addToHistogram(int[] histogramCounts, long[] histogramBreakpoints, long value, int numberOfTimes, long currentLowerBound,
long currentUpperBound) {
if (histogramCounts == null) {
createInitialHistogram(histogramBreakpoints, currentLowerBound, currentUpperBound);
} else {
for (int i = 0; i < HISTOGRAM_BUCKETS; i++) {
if (histogramBreakpoints[i] >= value) {
histogramCounts[i] += numberOfTimes;
break;
}
}
}
}
private void addToPerformanceHistogram(long value, int numberOfTimes) {
checkAndCreatePerformanceHistogram();
addToHistogram(this.perfMetricsHistCounts, this.perfMetricsHistBreakpoints, value, numberOfTimes, this.shortestQueryTimeMs == Long.MAX_VALUE ? 0
: this.shortestQueryTimeMs, this.longestQueryTimeMs);
}
private void addToTablesAccessedHistogram(long value, int numberOfTimes) {
checkAndCreateTablesAccessedHistogram();
addToHistogram(this.numTablesMetricsHistCounts, this.numTablesMetricsHistBreakpoints, value, numberOfTimes,
this.minimumNumberTablesAccessed == Long.MAX_VALUE ? 0 : this.minimumNumberTablesAccessed, this.maximumNumberTablesAccessed);
}
/**
* Builds the map needed for 4.1.0 and newer servers that maps field-level
* charset/collation info to a java character encoding name.
*
* @throws SQLException
*/
private void buildCollationMapping() throws SQLException {
Map indexToCharset = null;
Map sortedCollationMap = null;
Map customCharset = null;
Map customMblen = null;
if (getCacheServerConfiguration()) {
synchronized (dynamicIndexToCharsetMapByUrl) {
indexToCharset = dynamicIndexToCharsetMapByUrl.get(getURL());
sortedCollationMap = dynamicIndexToCollationMapByUrl.get(getURL());
customCharset = customIndexToCharsetMapByUrl.get(getURL());
customMblen = customCharsetToMblenMapByUrl.get(getURL());
}
}
if (indexToCharset == null) {
indexToCharset = new HashMap();
if (versionMeetsMinimum(4, 1, 0) && getDetectCustomCollations()) {
java.sql.Statement stmt = null;
java.sql.ResultSet results = null;
try {
sortedCollationMap = new TreeMap();
customCharset = new HashMap();
customMblen = new HashMap();
stmt = getMetadataSafeStatement();
try {
results = stmt.executeQuery("SHOW COLLATION");
if (versionMeetsMinimum(5, 0, 0)) {
Util.resultSetToMap(sortedCollationMap, results, 3, 2);
} else {
while (results.next()) {
sortedCollationMap.put(results.getLong(3), results.getString(2));
}
}
} catch (SQLException ex) {
if (ex.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw ex;
}
}
for (Iterator> indexIter = sortedCollationMap.entrySet().iterator(); indexIter.hasNext();) {
Map.Entry indexEntry = indexIter.next();
int collationIndex = indexEntry.getKey().intValue();
String charsetName = indexEntry.getValue();
indexToCharset.put(collationIndex, charsetName);
// if no static map for charsetIndex or server has a different mapping then our static map, adding it to custom map
if (collationIndex >= CharsetMapping.MAP_SIZE
|| !charsetName.equals(CharsetMapping.getMysqlCharsetNameForCollationIndex(collationIndex))) {
customCharset.put(collationIndex, charsetName);
}
// if no static map for charsetName adding to custom map
if (!CharsetMapping.CHARSET_NAME_TO_CHARSET.containsKey(charsetName)) {
customMblen.put(charsetName, null);
}
}
// if there is a number of custom charsets we should execute SHOW CHARACTER SET to know theirs mblen
if (customMblen.size() > 0) {
try {
results = stmt.executeQuery("SHOW CHARACTER SET");
while (results.next()) {
String charsetName = results.getString("Charset");
if (customMblen.containsKey(charsetName)) {
customMblen.put(charsetName, results.getInt("Maxlen"));
}
}
} catch (SQLException ex) {
if (ex.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw ex;
}
}
}
if (getCacheServerConfiguration()) {
synchronized (dynamicIndexToCharsetMapByUrl) {
dynamicIndexToCharsetMapByUrl.put(getURL(), indexToCharset);
dynamicIndexToCollationMapByUrl.put(getURL(), sortedCollationMap);
customIndexToCharsetMapByUrl.put(getURL(), customCharset);
customCharsetToMblenMapByUrl.put(getURL(), customMblen);
}
}
} catch (SQLException ex) {
throw ex;
} catch (RuntimeException ex) {
SQLException sqlEx = SQLError.createSQLException(ex.toString(), SQLError.SQL_STATE_ILLEGAL_ARGUMENT, null);
sqlEx.initCause(ex);
throw sqlEx;
} finally {
if (results != null) {
try {
results.close();
} catch (java.sql.SQLException sqlE) {
// ignore
}
}
if (stmt != null) {
try {
stmt.close();
} catch (java.sql.SQLException sqlE) {
// ignore
}
}
}
} else {
for (int i = 1; i < CharsetMapping.MAP_SIZE; i++) {
indexToCharset.put(i, CharsetMapping.getMysqlCharsetNameForCollationIndex(i));
}
if (getCacheServerConfiguration()) {
synchronized (dynamicIndexToCharsetMapByUrl) {
dynamicIndexToCharsetMapByUrl.put(getURL(), indexToCharset);
}
}
}
}
this.indexToMysqlCharset = Collections.unmodifiableMap(indexToCharset);
if (customCharset != null) {
this.indexToCustomMysqlCharset = Collections.unmodifiableMap(customCharset);
}
if (customMblen != null) {
this.mysqlCharsetToCustomMblen = Collections.unmodifiableMap(customMblen);
}
}
private boolean canHandleAsServerPreparedStatement(String sql) throws SQLException {
if (sql == null || sql.length() == 0) {
return true;
}
if (!this.useServerPreparedStmts) {
return false;
}
if (getCachePreparedStatements()) {
synchronized (this.serverSideStatementCheckCache) {
Boolean flag = (Boolean) this.serverSideStatementCheckCache.get(sql);
if (flag != null) {
return flag.booleanValue();
}
boolean canHandle = canHandleAsServerPreparedStatementNoCache(sql);
if (sql.length() < getPreparedStatementCacheSqlLimit()) {
this.serverSideStatementCheckCache.put(sql, canHandle ? Boolean.TRUE : Boolean.FALSE);
}
return canHandle;
}
}
return canHandleAsServerPreparedStatementNoCache(sql);
}
private boolean canHandleAsServerPreparedStatementNoCache(String sql) throws SQLException {
// Can't use server-side prepare for CALL
if (StringUtils.startsWithIgnoreCaseAndNonAlphaNumeric(sql, "CALL")) {
return false;
}
boolean canHandleAsStatement = true;
if (!versionMeetsMinimum(5, 0, 7)
&& (StringUtils.startsWithIgnoreCaseAndNonAlphaNumeric(sql, "SELECT") || StringUtils.startsWithIgnoreCaseAndNonAlphaNumeric(sql, "DELETE")
|| StringUtils.startsWithIgnoreCaseAndNonAlphaNumeric(sql, "INSERT")
|| StringUtils.startsWithIgnoreCaseAndNonAlphaNumeric(sql, "UPDATE") || StringUtils.startsWithIgnoreCaseAndNonAlphaNumeric(sql,
"REPLACE"))) {
// check for limit ?[,?]
/*
* The grammar for this (from the server) is: ULONG_NUM | ULONG_NUM ',' ULONG_NUM | ULONG_NUM OFFSET_SYM ULONG_NUM
*/
int currentPos = 0;
int statementLength = sql.length();
int lastPosToLook = statementLength - 7; // "LIMIT ".length()
boolean allowBackslashEscapes = !this.noBackslashEscapes;
String quoteChar = this.useAnsiQuotes ? "\"" : "'";
boolean foundLimitWithPlaceholder = false;
while (currentPos < lastPosToLook) {
int limitStart = StringUtils.indexOfIgnoreCase(currentPos, sql, "LIMIT ", quoteChar, quoteChar,
allowBackslashEscapes ? StringUtils.SEARCH_MODE__ALL : StringUtils.SEARCH_MODE__MRK_COM_WS);
if (limitStart == -1) {
break;
}
currentPos = limitStart + 7;
while (currentPos < statementLength) {
char c = sql.charAt(currentPos);
//
// Have we reached the end of what can be in a LIMIT clause?
//
if (!Character.isDigit(c) && !Character.isWhitespace(c) && c != ',' && c != '?') {
break;
}
if (c == '?') {
foundLimitWithPlaceholder = true;
break;
}
currentPos++;
}
}
canHandleAsStatement = !foundLimitWithPlaceholder;
} else if (StringUtils.startsWithIgnoreCaseAndWs(sql, "XA ")) {
canHandleAsStatement = false;
} else if (StringUtils.startsWithIgnoreCaseAndWs(sql, "CREATE TABLE")) {
canHandleAsStatement = false;
} else if (StringUtils.startsWithIgnoreCaseAndWs(sql, "DO")) {
canHandleAsStatement = false;
} else if (StringUtils.startsWithIgnoreCaseAndWs(sql, "SET")) {
canHandleAsStatement = false;
}
return canHandleAsStatement;
}
/**
* Changes the user on this connection by performing a re-authentication. If
* authentication fails, the connection will remain under the context of the
* current user.
*
* @param userName
* the username to authenticate with
* @param newPassword
* the password to authenticate with
* @throws SQLException
* if authentication fails, or some other error occurs while
* performing the command.
*/
public void changeUser(String userName, String newPassword) throws SQLException {
synchronized (getConnectionMutex()) {
checkClosed();
if ((userName == null) || userName.equals("")) {
userName = "";
}
if (newPassword == null) {
newPassword = "";
}
// reset maxRows to default value
this.sessionMaxRows = -1;
try {
this.io.changeUser(userName, newPassword, this.database);
} catch (SQLException ex) {
if (versionMeetsMinimum(5, 6, 13) && "28000".equals(ex.getSQLState())) {
cleanup(ex);
}
throw ex;
}
this.user = userName;
this.password = newPassword;
if (versionMeetsMinimum(4, 1, 0)) {
configureClientCharacterSet(true);
}
setSessionVariables();
setupServerForTruncationChecks();
}
}
private boolean characterSetNamesMatches(String mysqlEncodingName) {
// set names is equivalent to character_set_client ..._results and ..._connection, but we set _results later, so don't check it here.
return (mysqlEncodingName != null && mysqlEncodingName.equalsIgnoreCase(this.serverVariables.get("character_set_client")) && mysqlEncodingName
.equalsIgnoreCase(this.serverVariables.get("character_set_connection")));
}
private void checkAndCreatePerformanceHistogram() {
if (this.perfMetricsHistCounts == null) {
this.perfMetricsHistCounts = new int[HISTOGRAM_BUCKETS];
}
if (this.perfMetricsHistBreakpoints == null) {
this.perfMetricsHistBreakpoints = new long[HISTOGRAM_BUCKETS];
}
}
private void checkAndCreateTablesAccessedHistogram() {
if (this.numTablesMetricsHistCounts == null) {
this.numTablesMetricsHistCounts = new int[HISTOGRAM_BUCKETS];
}
if (this.numTablesMetricsHistBreakpoints == null) {
this.numTablesMetricsHistBreakpoints = new long[HISTOGRAM_BUCKETS];
}
}
public void checkClosed() throws SQLException {
if (this.isClosed) {
throwConnectionClosedException();
}
}
public void throwConnectionClosedException() throws SQLException {
StringBuffer messageBuf = new StringBuffer("No operations allowed after connection closed.");
SQLException ex = SQLError.createSQLException(messageBuf.toString(), SQLError.SQL_STATE_CONNECTION_NOT_OPEN, getExceptionInterceptor());
if (this.forceClosedReason != null) {
ex.initCause(this.forceClosedReason);
}
throw ex;
}
/**
* If useUnicode flag is set and explicit client character encoding isn't
* specified then assign encoding from server if any.
*
* @throws SQLException
*/
private void checkServerEncoding() throws SQLException {
if (getUseUnicode() && (getEncoding() != null)) {
// spec'd by client, don't map
return;
}
String serverCharset = this.serverVariables.get("character_set");
if (serverCharset == null) {
// must be 4.1.1 or newer?
serverCharset = this.serverVariables.get("character_set_server");
}
String mappedServerEncoding = null;
if (serverCharset != null) {
try {
mappedServerEncoding = CharsetMapping.getJavaEncodingForMysqlCharset(serverCharset);
} catch (RuntimeException ex) {
SQLException sqlEx = SQLError.createSQLException(ex.toString(), SQLError.SQL_STATE_ILLEGAL_ARGUMENT, null);
sqlEx.initCause(ex);
throw sqlEx;
}
}
//
// First check if we can do the encoding ourselves
//
if (!getUseUnicode() && (mappedServerEncoding != null)) {
SingleByteCharsetConverter converter = getCharsetConverter(mappedServerEncoding);
if (converter != null) { // we know how to convert this ourselves
setUseUnicode(true); // force the issue
setEncoding(mappedServerEncoding);
return;
}
}
//
// Now, try and find a Java I/O converter that can do the encoding for us
//
if (serverCharset != null) {
if (mappedServerEncoding == null) {
// We don't have a mapping for it, so try and canonicalize the name....
if (Character.isLowerCase(serverCharset.charAt(0))) {
char[] ach = serverCharset.toCharArray();
ach[0] = Character.toUpperCase(serverCharset.charAt(0));
setEncoding(new String(ach));
}
}
if (mappedServerEncoding == null) {
throw SQLError.createSQLException("Unknown character encoding on server '" + serverCharset + "', use 'characterEncoding=' property "
+ " to provide correct mapping", SQLError.SQL_STATE_INVALID_CONNECTION_ATTRIBUTE, getExceptionInterceptor());
}
//
// Attempt to use the encoding, and bail out if it can't be used
//
try {
StringUtils.getBytes("abc", mappedServerEncoding);
setEncoding(mappedServerEncoding);
setUseUnicode(true);
} catch (UnsupportedEncodingException UE) {
throw SQLError.createSQLException("The driver can not map the character encoding '" + getEncoding() + "' that your server is using "
+ "to a character encoding your JVM understands. You can specify this mapping manually by adding \"useUnicode=true\" "
+ "as well as \"characterEncoding=[an_encoding_your_jvm_understands]\" to your JDBC URL.", "0S100", getExceptionInterceptor());
}
}
}
/**
* Set transaction isolation level to the value received from server if any.
* Is called by connectionInit(...)
*
* @throws SQLException
*/
private void checkTransactionIsolationLevel() throws SQLException {
String txIsolationName = null;
if (versionMeetsMinimum(4, 0, 3)) {
txIsolationName = "tx_isolation";
} else {
txIsolationName = "transaction_isolation";
}
String s = this.serverVariables.get(txIsolationName);
if (s != null) {
Integer intTI = mapTransIsolationNameToValue.get(s);
if (intTI != null) {
this.isolationLevel = intTI.intValue();
}
}
}
/**
* Clobbers the physical network connection and marks
* this connection as closed.
*
* @throws SQLException
*/
public void abortInternal() throws SQLException {
if (this.io != null) {
try {
this.io.forceClose();
} catch (Throwable t) {
// can't do anything about it, and we're forcibly aborting
}
this.io.releaseResources();
this.io = null;
}
this.isClosed = true;
}
/**
* Destroys this connection and any underlying resources
*
* @param fromWhere
* @param whyCleanedUp
*/
private void cleanup(Throwable whyCleanedUp) {
try {
if (this.io != null) {
if (isClosed()) {
this.io.forceClose();
} else {
realClose(false, false, false, whyCleanedUp);
}
}
} catch (SQLException sqlEx) {
// ignore, we're going away.
}
this.isClosed = true;
}
public void clearHasTriedMaster() {
this.hasTriedMasterFlag = false;
}
/**
* After this call, getWarnings returns null until a new warning is reported
* for this connection.
*
* @exception SQLException
* if a database access error occurs
*/
public void clearWarnings() throws SQLException {
// firstWarning = null;
}
/**
* @param sql
* @throws SQLException
*/
public java.sql.PreparedStatement clientPrepareStatement(String sql) throws SQLException {
return clientPrepareStatement(sql, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY);
}
/**
* @see Connection#prepareStatement(String, int)
*/
public java.sql.PreparedStatement clientPrepareStatement(String sql, int autoGenKeyIndex) throws SQLException {
java.sql.PreparedStatement pStmt = clientPrepareStatement(sql);
((com.mysql.jdbc.PreparedStatement) pStmt).setRetrieveGeneratedKeys(autoGenKeyIndex == java.sql.Statement.RETURN_GENERATED_KEYS);
return pStmt;
}
/**
* @param sql
* @param resultSetType
* @param resultSetConcurrency
* @throws SQLException
*/
public java.sql.PreparedStatement clientPrepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
return clientPrepareStatement(sql, resultSetType, resultSetConcurrency, true);
}
public java.sql.PreparedStatement clientPrepareStatement(String sql, int resultSetType, int resultSetConcurrency, boolean processEscapeCodesIfNeeded)
throws SQLException {
checkClosed();
String nativeSql = processEscapeCodesIfNeeded && getProcessEscapeCodesForPrepStmts() ? nativeSQL(sql) : sql;
PreparedStatement pStmt = null;
if (getCachePreparedStatements()) {
PreparedStatement.ParseInfo pStmtInfo = this.cachedPreparedStatementParams.get(nativeSql);
if (pStmtInfo == null) {
pStmt = com.mysql.jdbc.PreparedStatement.getInstance(getLoadBalanceSafeProxy(), nativeSql, this.database);
this.cachedPreparedStatementParams.put(nativeSql, pStmt.getParseInfo());
} else {
pStmt = new com.mysql.jdbc.PreparedStatement(getLoadBalanceSafeProxy(), nativeSql, this.database, pStmtInfo);
}
} else {
pStmt = com.mysql.jdbc.PreparedStatement.getInstance(getLoadBalanceSafeProxy(), nativeSql, this.database);
}
pStmt.setResultSetType(resultSetType);
pStmt.setResultSetConcurrency(resultSetConcurrency);
return pStmt;
}
/**
* @see java.sql.Connection#prepareStatement(String, int[])
*/
public java.sql.PreparedStatement clientPrepareStatement(String sql, int[] autoGenKeyIndexes) throws SQLException {
PreparedStatement pStmt = (PreparedStatement) clientPrepareStatement(sql);
pStmt.setRetrieveGeneratedKeys((autoGenKeyIndexes != null) && (autoGenKeyIndexes.length > 0));
return pStmt;
}
/**
* @see java.sql.Connection#prepareStatement(String, String[])
*/
public java.sql.PreparedStatement clientPrepareStatement(String sql, String[] autoGenKeyColNames) throws SQLException {
PreparedStatement pStmt = (PreparedStatement) clientPrepareStatement(sql);
pStmt.setRetrieveGeneratedKeys((autoGenKeyColNames != null) && (autoGenKeyColNames.length > 0));
return pStmt;
}
public java.sql.PreparedStatement clientPrepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
throws SQLException {
return clientPrepareStatement(sql, resultSetType, resultSetConcurrency, true);
}
// --------------------------JDBC 2.0-----------------------------
/**
* In some cases, it is desirable to immediately release a Connection's
* database and JDBC resources instead of waiting for them to be
* automatically released (cant think why off the top of my head) Note:
* A Connection is automatically closed when it is garbage collected.
* Certain fatal errors also result in a closed connection.
*
* @exception SQLException
* if a database access error occurs
*/
public void close() throws SQLException {
synchronized (getConnectionMutex()) {
if (this.connectionLifecycleInterceptors != null) {
new IterateBlock(this.connectionLifecycleInterceptors.iterator()) {
@Override
void forEach(Extension each) throws SQLException {
((ConnectionLifecycleInterceptor) each).close();
}
}.doForAll();
}
realClose(true, true, false, null);
}
}
/**
* Closes all currently open statements.
*
* @throws SQLException
*/
private void closeAllOpenStatements() throws SQLException {
SQLException postponedException = null;
if (this.openStatements != null) {
List currentlyOpenStatements = new ArrayList(); // we need this to
// avoid ConcurrentModificationEx
for (Iterator iter = this.openStatements.keySet().iterator(); iter.hasNext();) {
currentlyOpenStatements.add(iter.next());
}
int numStmts = currentlyOpenStatements.size();
for (int i = 0; i < numStmts; i++) {
StatementImpl stmt = (StatementImpl) currentlyOpenStatements.get(i);
try {
stmt.realClose(false, true);
} catch (SQLException sqlEx) {
postponedException = sqlEx; // throw it later, cleanup all
// statements first
}
}
if (postponedException != null) {
throw postponedException;
}
}
}
private void closeStatement(java.sql.Statement stmt) {
if (stmt != null) {
try {
stmt.close();
} catch (SQLException sqlEx) {
// ignore
}
stmt = null;
}
}
/**
* The method commit() makes all changes made since the previous
* commit/rollback permanent and releases any database locks currently held
* by the Connection. This method should only be used when auto-commit has
* been disabled.
*
* Note: MySQL does not support transactions, so this method is a no-op.
*
*
* @exception SQLException
* if a database access error occurs
* @see setAutoCommit
*/
public void commit() throws SQLException {
synchronized (getConnectionMutex()) {
checkClosed();
try {
if (this.connectionLifecycleInterceptors != null) {
IterateBlock iter = new IterateBlock(this.connectionLifecycleInterceptors.iterator()) {
@Override
void forEach(Extension each) throws SQLException {
if (!((ConnectionLifecycleInterceptor) each).commit()) {
this.stopIterating = true;
}
}
};
iter.doForAll();
if (!iter.fullIteration()) {
return;
}
}
// no-op if _relaxAutoCommit == true
if (this.autoCommit && !getRelaxAutoCommit()) {
throw SQLError.createSQLException("Can't call commit when autocommit=true", getExceptionInterceptor());
} else if (this.transactionsSupported) {
if (getUseLocalTransactionState() && versionMeetsMinimum(5, 0, 0)) {
if (!this.io.inTransactionOnServer()) {
return; // effectively a no-op
}
}
execSQL(null, "commit", -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null, false);
}
} catch (SQLException sqlException) {
if (SQLError.SQL_STATE_COMMUNICATION_LINK_FAILURE.equals(sqlException.getSQLState())) {
throw SQLError.createSQLException("Communications link failure during commit(). Transaction resolution unknown.",
SQLError.SQL_STATE_TRANSACTION_RESOLUTION_UNKNOWN, getExceptionInterceptor());
}
throw sqlException;
} finally {
this.needsPing = this.getReconnectAtTxEnd();
}
}
return;
}
/**
* Configures client-side properties for character set information.
*
* @throws SQLException
* if unable to configure the specified character set.
*/
private void configureCharsetProperties() throws SQLException {
if (getEncoding() != null) {
// Attempt to use the encoding, and bail out if it can't be used
try {
String testString = "abc";
StringUtils.getBytes(testString, getEncoding());
} catch (UnsupportedEncodingException UE) {
// Try the MySQL character encoding, then....
String oldEncoding = getEncoding();
try {
setEncoding(CharsetMapping.getJavaEncodingForMysqlCharset(oldEncoding));
} catch (RuntimeException ex) {
SQLException sqlEx = SQLError.createSQLException(ex.toString(), SQLError.SQL_STATE_ILLEGAL_ARGUMENT, null);
sqlEx.initCause(ex);
throw sqlEx;
}
if (getEncoding() == null) {
throw SQLError.createSQLException("Java does not support the MySQL character encoding '" + oldEncoding + "'.",
SQLError.SQL_STATE_INVALID_CONNECTION_ATTRIBUTE, getExceptionInterceptor());
}
try {
String testString = "abc";
StringUtils.getBytes(testString, getEncoding());
} catch (UnsupportedEncodingException encodingEx) {
throw SQLError.createSQLException("Unsupported character encoding '" + getEncoding() + "'.",
SQLError.SQL_STATE_INVALID_CONNECTION_ATTRIBUTE, getExceptionInterceptor());
}
}
}
}
/**
* Sets up client character set for MySQL-4.1 and newer if the user This
* must be done before any further communication with the server!
*
* @return true if this routine actually configured the client character
* set, or false if the driver needs to use 'older' methods to
* detect the character set, as it is connected to a MySQL server
* older than 4.1.0
* @throws SQLException
* if an exception happens while sending 'SET NAMES' to the
* server, or the server sends character set information that
* the client doesn't know about.
*/
private boolean configureClientCharacterSet(boolean dontCheckServerMatch) throws SQLException {
String realJavaEncoding = getEncoding();
boolean characterSetAlreadyConfigured = false;
try {
if (versionMeetsMinimum(4, 1, 0)) {
characterSetAlreadyConfigured = true;
setUseUnicode(true);
configureCharsetProperties();
realJavaEncoding = getEncoding(); // we need to do this again to grab this for versions > 4.1.0
try {
// Fault injection for testing server character set indices
if (this.props != null && this.props.getProperty("com.mysql.jdbc.faultInjection.serverCharsetIndex") != null) {
this.io.serverCharsetIndex = Integer.parseInt(this.props.getProperty("com.mysql.jdbc.faultInjection.serverCharsetIndex"));
}
String serverEncodingToSet = CharsetMapping.getJavaEncodingForCollationIndex(this.io.serverCharsetIndex);
if (serverEncodingToSet == null || serverEncodingToSet.length() == 0) {
if (realJavaEncoding != null) {
// user knows best, try it
setEncoding(realJavaEncoding);
} else {
throw SQLError.createSQLException("Unknown initial character set index '" + this.io.serverCharsetIndex
+ "' received from server. Initial client character set can be forced via the 'characterEncoding' property.",
SQLError.SQL_STATE_GENERAL_ERROR, getExceptionInterceptor());
}
}
// "latin1" on MySQL-4.1.0+ is actually CP1252, not ISO8859_1
if (versionMeetsMinimum(4, 1, 0) && "ISO8859_1".equalsIgnoreCase(serverEncodingToSet)) {
serverEncodingToSet = "Cp1252";
}
if ("UnicodeBig".equalsIgnoreCase(serverEncodingToSet) || "UTF-16".equalsIgnoreCase(serverEncodingToSet)
|| "UTF-16LE".equalsIgnoreCase(serverEncodingToSet) || "UTF-32".equalsIgnoreCase(serverEncodingToSet)) {
serverEncodingToSet = "UTF-8";
}
setEncoding(serverEncodingToSet);
} catch (ArrayIndexOutOfBoundsException outOfBoundsEx) {
if (realJavaEncoding != null) {
// user knows best, try it
setEncoding(realJavaEncoding);
} else {
throw SQLError.createSQLException("Unknown initial character set index '" + this.io.serverCharsetIndex
+ "' received from server. Initial client character set can be forced via the 'characterEncoding' property.",
SQLError.SQL_STATE_GENERAL_ERROR, getExceptionInterceptor());
}
} catch (SQLException ex) {
throw ex;
} catch (RuntimeException ex) {
SQLException sqlEx = SQLError.createSQLException(ex.toString(), SQLError.SQL_STATE_ILLEGAL_ARGUMENT, null);
sqlEx.initCause(ex);
throw sqlEx;
}
if (getEncoding() == null) {
// punt?
setEncoding("ISO8859_1");
}
//
// Has the user has 'forced' the character encoding via driver properties?
//
if (getUseUnicode()) {
if (realJavaEncoding != null) {
//
// Now, inform the server what character set we will be using from now-on...
//
if (realJavaEncoding.equalsIgnoreCase("UTF-8") || realJavaEncoding.equalsIgnoreCase("UTF8")) {
// charset names are case-sensitive
boolean utf8mb4Supported = versionMeetsMinimum(5, 5, 2);
boolean useutf8mb4 = utf8mb4Supported && (CharsetMapping.UTF8MB4_INDEXES.contains(this.io.serverCharsetIndex));
if (!getUseOldUTF8Behavior()) {
if (dontCheckServerMatch || !characterSetNamesMatches("utf8") || (utf8mb4Supported && !characterSetNamesMatches("utf8mb4"))) {
execSQL(null, "SET NAMES " + (useutf8mb4 ? "utf8mb4" : "utf8"), -1, null, DEFAULT_RESULT_SET_TYPE,
DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null, false);
}
} else {
execSQL(null, "SET NAMES latin1", -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false, this.database,
null, false);
}
setEncoding(realJavaEncoding);
} /* not utf-8 */else {
String mysqlCharsetName = CharsetMapping.getMysqlCharsetForJavaEncoding(realJavaEncoding.toUpperCase(Locale.ENGLISH), this);
/*
* if ("koi8_ru".equals(mysqlEncodingName)) { //
* This has a _different_ name in 4.1...
* mysqlEncodingName = "ko18r"; } else if
* ("euc_kr".equals(mysqlEncodingName)) { //
* Different name in 4.1 mysqlEncodingName =
* "euckr"; }
*/
if (mysqlCharsetName != null) {
if (dontCheckServerMatch || !characterSetNamesMatches(mysqlCharsetName)) {
execSQL(null, "SET NAMES " + mysqlCharsetName, -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false,
this.database, null, false);
}
}
// Switch driver's encoding now, since the server knows what we're sending...
//
setEncoding(realJavaEncoding);
}
} else if (getEncoding() != null) {
// Tell the server we'll use the server default charset to send our queries from now on....
String mysqlCharsetName = getServerCharset();
if (getUseOldUTF8Behavior()) {
mysqlCharsetName = "latin1";
}
boolean ucs2 = false;
if ("ucs2".equalsIgnoreCase(mysqlCharsetName) || "utf16".equalsIgnoreCase(mysqlCharsetName)
|| "utf16le".equalsIgnoreCase(mysqlCharsetName) || "utf32".equalsIgnoreCase(mysqlCharsetName)) {
mysqlCharsetName = "utf8";
ucs2 = true;
if (getCharacterSetResults() == null) {
setCharacterSetResults("UTF-8");
}
}
if (dontCheckServerMatch || !characterSetNamesMatches(mysqlCharsetName) || ucs2) {
try {
execSQL(null, "SET NAMES " + mysqlCharsetName, -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false,
this.database, null, false);
} catch (SQLException ex) {
if (ex.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw ex;
}
}
}
realJavaEncoding = getEncoding();
}
}
//
// We know how to deal with any charset coming back from the database, so tell the server not to do conversion if the user hasn't 'forced' a
// result-set character set
//
String onServer = null;
boolean isNullOnServer = false;
if (this.serverVariables != null) {
onServer = this.serverVariables.get("character_set_results");
isNullOnServer = onServer == null || "NULL".equalsIgnoreCase(onServer) || onServer.length() == 0;
}
if (getCharacterSetResults() == null) {
//
// Only send if needed, if we're caching server variables we -have- to send, because we don't know what it was before we cached them.
//
if (!isNullOnServer) {
try {
execSQL(null, "SET character_set_results = NULL", -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false,
this.database, null, false);
} catch (SQLException ex) {
if (ex.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw ex;
}
}
this.serverVariables.put(JDBC_LOCAL_CHARACTER_SET_RESULTS, null);
} else {
this.serverVariables.put(JDBC_LOCAL_CHARACTER_SET_RESULTS, onServer);
}
} else {
if (getUseOldUTF8Behavior()) {
try {
execSQL(null, "SET NAMES latin1", -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null,
false);
} catch (SQLException ex) {
if (ex.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw ex;
}
}
}
String charsetResults = getCharacterSetResults();
String mysqlEncodingName = null;
if ("UTF-8".equalsIgnoreCase(charsetResults) || "UTF8".equalsIgnoreCase(charsetResults)) {
mysqlEncodingName = "utf8";
} else if ("null".equalsIgnoreCase(charsetResults)) {
mysqlEncodingName = "NULL";
} else {
mysqlEncodingName = CharsetMapping.getMysqlCharsetForJavaEncoding(charsetResults.toUpperCase(Locale.ENGLISH), this);
}
//
// Only change the value if needed
//
if (mysqlEncodingName == null) {
throw SQLError.createSQLException("Can't map " + charsetResults + " given for characterSetResults to a supported MySQL encoding.",
SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor());
}
if (!mysqlEncodingName.equalsIgnoreCase(this.serverVariables.get("character_set_results"))) {
StringBuffer setBuf = new StringBuffer("SET character_set_results = ".length() + mysqlEncodingName.length());
setBuf.append("SET character_set_results = ").append(mysqlEncodingName);
try {
execSQL(null, setBuf.toString(), -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null,
false);
} catch (SQLException ex) {
if (ex.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw ex;
}
}
this.serverVariables.put(JDBC_LOCAL_CHARACTER_SET_RESULTS, mysqlEncodingName);
// We have to set errorMessageEncoding according to new value of charsetResults for server version 5.5 and higher
if (versionMeetsMinimum(5, 5, 0)) {
this.errorMessageEncoding = charsetResults;
}
} else {
this.serverVariables.put(JDBC_LOCAL_CHARACTER_SET_RESULTS, onServer);
}
}
if (getConnectionCollation() != null) {
StringBuffer setBuf = new StringBuffer("SET collation_connection = ".length() + getConnectionCollation().length());
setBuf.append("SET collation_connection = ").append(getConnectionCollation());
try {
execSQL(null, setBuf.toString(), -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null, false);
} catch (SQLException ex) {
if (ex.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw ex;
}
}
}
} else {
// Use what the server has specified
realJavaEncoding = getEncoding(); // so we don't get
// swapped out in the finally block....
}
} finally {
// Failsafe, make sure that the driver's notion of character encoding matches what the user has specified.
//
setEncoding(realJavaEncoding);
}
/**
* Check if we need a CharsetEncoder for escaping codepoints that are
* transformed to backslash (0x5c) in the connection encoding.
*/
try {
CharsetEncoder enc = Charset.forName(getEncoding()).newEncoder();
CharBuffer cbuf = CharBuffer.allocate(1);
ByteBuffer bbuf = ByteBuffer.allocate(1);
cbuf.put("\u00a5");
cbuf.position(0);
enc.encode(cbuf, bbuf, true);
if (bbuf.get(0) == '\\') {
this.requiresEscapingEncoder = true;
} else {
cbuf.clear();
bbuf.clear();
cbuf.put("\u20a9");
cbuf.position(0);
enc.encode(cbuf, bbuf, true);
if (bbuf.get(0) == '\\') {
this.requiresEscapingEncoder = true;
}
}
} catch (java.nio.charset.UnsupportedCharsetException ucex) {
// fallback to String API - for Java 1.4
try {
byte bbuf[] = StringUtils.getBytes("\u00a5", getEncoding());
if (bbuf[0] == '\\') {
this.requiresEscapingEncoder = true;
} else {
bbuf = StringUtils.getBytes("\u20a9", getEncoding());
if (bbuf[0] == '\\') {
this.requiresEscapingEncoder = true;
}
}
} catch (UnsupportedEncodingException ueex) {
throw SQLError
.createSQLException("Unable to use encoding: " + getEncoding(), SQLError.SQL_STATE_GENERAL_ERROR, ueex, getExceptionInterceptor());
}
}
return characterSetAlreadyConfigured;
}
/**
* Configures the client's timezone if required.
*
* @throws SQLException
* if the timezone the server is configured to use can't be
* mapped to a Java timezone.
*/
private void configureTimezone() throws SQLException {
String configuredTimeZoneOnServer = this.serverVariables.get("timezone");
if (configuredTimeZoneOnServer == null) {
configuredTimeZoneOnServer = this.serverVariables.get("time_zone");
if ("SYSTEM".equalsIgnoreCase(configuredTimeZoneOnServer)) {
configuredTimeZoneOnServer = this.serverVariables.get("system_time_zone");
}
}
String canonicalTimezone = getServerTimezone();
if ((getUseTimezone() || !getUseLegacyDatetimeCode()) && configuredTimeZoneOnServer != null) {
// user can override this with driver properties, so don't detect if that's the case
if (canonicalTimezone == null || StringUtils.isEmptyOrWhitespaceOnly(canonicalTimezone)) {
try {
canonicalTimezone = TimeUtil.getCanonicalTimezone(configuredTimeZoneOnServer, getExceptionInterceptor());
} catch (IllegalArgumentException iae) {
throw SQLError.createSQLException(iae.getMessage(), SQLError.SQL_STATE_GENERAL_ERROR, getExceptionInterceptor());
}
}
}
if (canonicalTimezone != null && canonicalTimezone.length() > 0) {
this.serverTimezoneTZ = TimeZone.getTimeZone(canonicalTimezone);
//
// The Calendar class has the behavior of mapping unknown timezones to 'GMT' instead of throwing an exception, so we must check for this...
//
if (!canonicalTimezone.equalsIgnoreCase("GMT") && this.serverTimezoneTZ.getID().equals("GMT")) {
throw SQLError.createSQLException("No timezone mapping entry for '" + canonicalTimezone + "'", SQLError.SQL_STATE_ILLEGAL_ARGUMENT,
getExceptionInterceptor());
}
this.isServerTzUTC = "GMT".equalsIgnoreCase(this.serverTimezoneTZ.getID());
}
}
private void createInitialHistogram(long[] breakpoints, long lowerBound, long upperBound) {
double bucketSize = (((double) upperBound - (double) lowerBound) / HISTOGRAM_BUCKETS) * 1.25;
if (bucketSize < 1) {
bucketSize = 1;
}
for (int i = 0; i < HISTOGRAM_BUCKETS; i++) {
breakpoints[i] = lowerBound;
lowerBound += bucketSize;
}
}
/**
* Creates an IO channel to the server
*
* @param isForReconnect
* is this request for a re-connect
* @return a new MysqlIO instance connected to a server
* @throws SQLException
* if a database access error occurs
* @throws CommunicationsException
*/
public void createNewIO(boolean isForReconnect) throws SQLException {
synchronized (getConnectionMutex()) {
// Synchronization Not needed for *new* connections, but defintely for connections going through fail-over, since we might get the new connection up
// and running *enough* to start sending cached or still-open server-side prepared statements over to the backend before we get a chance to
// re-prepare them...
Properties mergedProps = exposeAsProperties(this.props);
if (!getHighAvailability()) {
connectOneTryOnly(isForReconnect, mergedProps);
return;
}
connectWithRetries(isForReconnect, mergedProps);
}
}
private void connectWithRetries(boolean isForReconnect, Properties mergedProps) throws SQLException {
double timeout = getInitialTimeout();
boolean connectionGood = false;
Exception connectionException = null;
for (int attemptCount = 0; (attemptCount < getMaxReconnects()) && !connectionGood; attemptCount++) {
try {
if (this.io != null) {
this.io.forceClose();
}
coreConnect(mergedProps);
pingInternal(false, 0);
boolean oldAutoCommit;
int oldIsolationLevel;
boolean oldReadOnly;
String oldCatalog;
synchronized (getConnectionMutex()) {
this.connectionId = this.io.getThreadId();
this.isClosed = false;
// save state from old connection
oldAutoCommit = getAutoCommit();
oldIsolationLevel = this.isolationLevel;
oldReadOnly = isReadOnly(false);
oldCatalog = getCatalog();
this.io.setStatementInterceptors(this.statementInterceptors);
}
// Server properties might be different from previous connection, so initialize again...
initializePropsFromServer();
if (isForReconnect) {
// Restore state from old connection
setAutoCommit(oldAutoCommit);
if (this.hasIsolationLevels) {
setTransactionIsolation(oldIsolationLevel);
}
setCatalog(oldCatalog);
setReadOnly(oldReadOnly);
}
connectionGood = true;
break;
} catch (Exception EEE) {
connectionException = EEE;
connectionGood = false;
}
if (connectionGood) {
break;
}
if (attemptCount > 0) {
try {
Thread.sleep((long) timeout * 1000);
} catch (InterruptedException IE) {
// ignore
}
}
} // end attempts for a single host
if (!connectionGood) {
// We've really failed!
SQLException chainedEx = SQLError.createSQLException(
Messages.getString("Connection.UnableToConnectWithRetries", new Object[] { Integer.valueOf(getMaxReconnects()) }),
SQLError.SQL_STATE_UNABLE_TO_CONNECT_TO_DATASOURCE, getExceptionInterceptor());
chainedEx.initCause(connectionException);
throw chainedEx;
}
if (getParanoid() && !getHighAvailability()) {
this.password = null;
this.user = null;
}
if (isForReconnect) {
//
// Retrieve any 'lost' prepared statements if re-connecting
//
Iterator statementIter = this.openStatements.values().iterator();
//
// We build a list of these outside the map of open statements, because in the process of re-preparing, we might end up having to close a prepared
// statement, thus removing it from the map, and generating a ConcurrentModificationException
//
Stack serverPreparedStatements = null;
while (statementIter.hasNext()) {
Statement statementObj = statementIter.next();
if (statementObj instanceof ServerPreparedStatement) {
if (serverPreparedStatements == null) {
serverPreparedStatements = new Stack();
}
serverPreparedStatements.add(statementObj);
}
}
if (serverPreparedStatements != null) {
while (!serverPreparedStatements.isEmpty()) {
((ServerPreparedStatement) serverPreparedStatements.pop()).rePrepare();
}
}
}
}
private void coreConnect(Properties mergedProps) throws SQLException, IOException {
int newPort = 3306;
String newHost = "localhost";
String protocol = mergedProps.getProperty(NonRegisteringDriver.PROTOCOL_PROPERTY_KEY);
if (protocol != null) {
// "new" style URL
if ("tcp".equalsIgnoreCase(protocol)) {
newHost = normalizeHost(mergedProps.getProperty(NonRegisteringDriver.HOST_PROPERTY_KEY));
newPort = parsePortNumber(mergedProps.getProperty(NonRegisteringDriver.PORT_PROPERTY_KEY, "3306"));
} else if ("pipe".equalsIgnoreCase(protocol)) {
setSocketFactoryClassName(NamedPipeSocketFactory.class.getName());
String path = mergedProps.getProperty(NonRegisteringDriver.PATH_PROPERTY_KEY);
if (path != null) {
mergedProps.setProperty(NamedPipeSocketFactory.NAMED_PIPE_PROP_NAME, path);
}
} else {
// normalize for all unknown protocols
newHost = normalizeHost(mergedProps.getProperty(NonRegisteringDriver.HOST_PROPERTY_KEY));
newPort = parsePortNumber(mergedProps.getProperty(NonRegisteringDriver.PORT_PROPERTY_KEY, "3306"));
}
} else {
String[] parsedHostPortPair = NonRegisteringDriver.parseHostPortPair(this.hostPortPair);
newHost = parsedHostPortPair[NonRegisteringDriver.HOST_NAME_INDEX];
newHost = normalizeHost(newHost);
if (parsedHostPortPair[NonRegisteringDriver.PORT_NUMBER_INDEX] != null) {
newPort = parsePortNumber(parsedHostPortPair[NonRegisteringDriver.PORT_NUMBER_INDEX]);
}
}
this.port = newPort;
this.host = newHost;
// reset max-rows to default value
this.sessionMaxRows = -1;
this.io = new MysqlIO(newHost, newPort, mergedProps, getSocketFactoryClassName(), getProxy(), getSocketTimeout(),
this.largeRowSizeThreshold.getValueAsInt());
this.io.doHandshake(this.user, this.password, this.database);
if (versionMeetsMinimum(5, 5, 0)) {
// error messages are returned according to character_set_results which, at this point, is set from the response packet
this.errorMessageEncoding = this.io.getEncodingForHandshake();
}
}
private String normalizeHost(String hostname) {
if (hostname == null || StringUtils.isEmptyOrWhitespaceOnly(hostname)) {
return "localhost";
}
return hostname;
}
private int parsePortNumber(String portAsString) throws SQLException {
int portNumber = 3306;
try {
portNumber = Integer.parseInt(portAsString);
} catch (NumberFormatException nfe) {
throw SQLError.createSQLException("Illegal connection port value '" + portAsString + "'", SQLError.SQL_STATE_INVALID_CONNECTION_ATTRIBUTE,
getExceptionInterceptor());
}
return portNumber;
}
private void connectOneTryOnly(boolean isForReconnect, Properties mergedProps) throws SQLException {
Exception connectionNotEstablishedBecause = null;
try {
coreConnect(mergedProps);
this.connectionId = this.io.getThreadId();
this.isClosed = false;
// save state from old connection
boolean oldAutoCommit = getAutoCommit();
int oldIsolationLevel = this.isolationLevel;
boolean oldReadOnly = isReadOnly(false);
String oldCatalog = getCatalog();
this.io.setStatementInterceptors(this.statementInterceptors);
// Server properties might be different from previous connection, so initialize again...
initializePropsFromServer();
if (isForReconnect) {
// Restore state from old connection
setAutoCommit(oldAutoCommit);
if (this.hasIsolationLevels) {
setTransactionIsolation(oldIsolationLevel);
}
setCatalog(oldCatalog);
setReadOnly(oldReadOnly);
}
return;
} catch (Exception EEE) {
if (EEE instanceof SQLException && ((SQLException) EEE).getErrorCode() == MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD
&& !getDisconnectOnExpiredPasswords()) {
return;
}
if (this.io != null) {
this.io.forceClose();
}
connectionNotEstablishedBecause = EEE;
if (EEE instanceof SQLException) {
throw (SQLException) EEE;
}
SQLException chainedEx = SQLError.createSQLException(Messages.getString("Connection.UnableToConnect"),
SQLError.SQL_STATE_UNABLE_TO_CONNECT_TO_DATASOURCE, getExceptionInterceptor());
chainedEx.initCause(connectionNotEstablishedBecause);
throw chainedEx;
}
}
private void createPreparedStatementCaches() throws SQLException {
synchronized (getConnectionMutex()) {
int cacheSize = getPreparedStatementCacheSize();
try {
Class factoryClass;
factoryClass = Class.forName(getParseInfoCacheFactory());
@SuppressWarnings("unchecked")
CacheAdapterFactory cacheFactory = ((CacheAdapterFactory) factoryClass.newInstance());
this.cachedPreparedStatementParams = cacheFactory.getInstance(this, this.myURL, getPreparedStatementCacheSize(),
getPreparedStatementCacheSqlLimit(), this.props);
} catch (ClassNotFoundException e) {
SQLException sqlEx = SQLError.createSQLException(
Messages.getString("Connection.CantFindCacheFactory", new Object[] { getParseInfoCacheFactory(), "parseInfoCacheFactory" }),
getExceptionInterceptor());
sqlEx.initCause(e);
throw sqlEx;
} catch (InstantiationException e) {
SQLException sqlEx = SQLError.createSQLException(
Messages.getString("Connection.CantLoadCacheFactory", new Object[] { getParseInfoCacheFactory(), "parseInfoCacheFactory" }),
getExceptionInterceptor());
sqlEx.initCause(e);
throw sqlEx;
} catch (IllegalAccessException e) {
SQLException sqlEx = SQLError.createSQLException(
Messages.getString("Connection.CantLoadCacheFactory", new Object[] { getParseInfoCacheFactory(), "parseInfoCacheFactory" }),
getExceptionInterceptor());
sqlEx.initCause(e);
throw sqlEx;
}
if (getUseServerPreparedStmts()) {
this.serverSideStatementCheckCache = new LRUCache(cacheSize);
this.serverSideStatementCache = new LRUCache(cacheSize) {
private static final long serialVersionUID = 7692318650375988114L;
@Override
protected boolean removeEldestEntry(java.util.Map.Entry eldest) {
if (this.maxElements <= 1) {
return false;
}
boolean removeIt = super.removeEldestEntry(eldest);
if (removeIt) {
ServerPreparedStatement ps = (ServerPreparedStatement) eldest.getValue();
ps.isCached = false;
ps.setClosed(false);
try {
ps.close();
} catch (SQLException sqlEx) {
// punt
}
}
return removeIt;
}
};
}
}
}
/**
* SQL statements without parameters are normally executed using Statement
* objects. If the same SQL statement is executed many times, it is more
* efficient to use a PreparedStatement
*
* @return a new Statement object
* @throws SQLException
* passed through from the constructor
*/
public java.sql.Statement createStatement() throws SQLException {
return createStatement(DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY);
}
/**
* JDBC 2.0 Same as createStatement() above, but allows the default result
* set type and result set concurrency type to be overridden.
*
* @param resultSetType
* a result set type, see ResultSet.TYPE_XXX
* @param resultSetConcurrency
* a concurrency type, see ResultSet.CONCUR_XXX
* @return a new Statement object
* @exception SQLException
* if a database-access error occurs.
*/
public java.sql.Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
checkClosed();
StatementImpl stmt = new StatementImpl(getLoadBalanceSafeProxy(), this.database);
stmt.setResultSetType(resultSetType);
stmt.setResultSetConcurrency(resultSetConcurrency);
return stmt;
}
/**
* @see Connection#createStatement(int, int, int)
*/
public java.sql.Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
if (getPedantic()) {
if (resultSetHoldability != java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT) {
throw SQLError.createSQLException("HOLD_CUSRORS_OVER_COMMIT is only supported holdability level", SQLError.SQL_STATE_ILLEGAL_ARGUMENT,
getExceptionInterceptor());
}
}
return createStatement(resultSetType, resultSetConcurrency);
}
public void dumpTestcaseQuery(String query) {
System.err.println(query);
}
public Connection duplicate() throws SQLException {
return new ConnectionImpl(this.origHostToConnectTo, this.origPortToConnectTo, this.props, this.origDatabaseToConnectTo, this.myURL);
}
/**
* Send a query to the server. Returns one of the ResultSet objects. This is
* synchronized, so Statement's queries will be serialized.
*
* @param callingStatement
* @param sql
* the SQL statement to be executed
* @param maxRows
* @param packet
* @param resultSetType
* @param resultSetConcurrency
* @param streamResults
* @param queryIsSelectOnly
* @param catalog
* @param unpackFields
* @return a ResultSet holding the results
* @exception SQLException
* if a database error occurs
*/
// ResultSet execSQL(Statement callingStatement, String sql,
// int maxRowsToRetreive, String catalog) throws SQLException {
// return execSQL(callingStatement, sql, maxRowsToRetreive, null,
// java.sql.ResultSet.TYPE_FORWARD_ONLY,
// DEFAULT_RESULT_SET_CONCURRENCY, catalog);
// }
// ResultSet execSQL(Statement callingStatement, String sql, int maxRows,
// int resultSetType, int resultSetConcurrency, boolean streamResults,
// boolean queryIsSelectOnly, String catalog, boolean unpackFields) throws
// SQLException {
// return execSQL(callingStatement, sql, maxRows, null, resultSetType,
// resultSetConcurrency, streamResults, queryIsSelectOnly, catalog,
// unpackFields);
// }
public ResultSetInternalMethods execSQL(StatementImpl callingStatement, String sql, int maxRows, Buffer packet, int resultSetType,
int resultSetConcurrency, boolean streamResults, String catalog, Field[] cachedMetadata) throws SQLException {
return execSQL(callingStatement, sql, maxRows, packet, resultSetType, resultSetConcurrency, streamResults, catalog, cachedMetadata, false);
}
public ResultSetInternalMethods execSQL(StatementImpl callingStatement, String sql, int maxRows, Buffer packet, int resultSetType,
int resultSetConcurrency, boolean streamResults, String catalog, Field[] cachedMetadata, boolean isBatch) throws SQLException {
synchronized (getConnectionMutex()) {
//
// Fall-back if the master is back online if we've issued queriesBeforeRetryMaster queries since we failed over
//
long queryStartTime = 0;
int endOfQueryPacketPosition = 0;
if (packet != null) {
endOfQueryPacketPosition = packet.getPosition();
}
if (getGatherPerformanceMetrics()) {
queryStartTime = System.currentTimeMillis();
}
this.lastQueryFinishedTime = 0; // we're busy!
if ((getHighAvailability()) && (this.autoCommit || getAutoReconnectForPools()) && this.needsPing && !isBatch) {
try {
pingInternal(false, 0);
this.needsPing = false;
} catch (Exception Ex) {
createNewIO(true);
}
}
try {
if (packet == null) {
String encoding = null;
if (getUseUnicode()) {
encoding = getEncoding();
}
return this.io.sqlQueryDirect(callingStatement, sql, encoding, null, maxRows, resultSetType, resultSetConcurrency, streamResults, catalog,
cachedMetadata);
}
return this.io.sqlQueryDirect(callingStatement, null, null, packet, maxRows, resultSetType, resultSetConcurrency, streamResults, catalog,
cachedMetadata);
} catch (java.sql.SQLException sqlE) {
// don't clobber SQL exceptions
if (getDumpQueriesOnException()) {
String extractedSql = extractSqlFromPacket(sql, packet, endOfQueryPacketPosition);
StringBuffer messageBuf = new StringBuffer(extractedSql.length() + 32);
messageBuf.append("\n\nQuery being executed when exception was thrown:\n");
messageBuf.append(extractedSql);
messageBuf.append("\n\n");
sqlE = appendMessageToException(sqlE, messageBuf.toString(), getExceptionInterceptor());
}
if ((getHighAvailability())) {
this.needsPing = true;
} else {
String sqlState = sqlE.getSQLState();
if ((sqlState != null) && sqlState.equals(SQLError.SQL_STATE_COMMUNICATION_LINK_FAILURE)) {
cleanup(sqlE);
}
}
throw sqlE;
} catch (Exception ex) {
if (getHighAvailability()) {
this.needsPing = true;
} else if (ex instanceof IOException) {
cleanup(ex);
}
SQLException sqlEx = SQLError.createSQLException(Messages.getString("Connection.UnexpectedException"), SQLError.SQL_STATE_GENERAL_ERROR,
getExceptionInterceptor());
sqlEx.initCause(ex);
throw sqlEx;
} finally {
if (getMaintainTimeStats()) {
this.lastQueryFinishedTime = System.currentTimeMillis();
}
if (getGatherPerformanceMetrics()) {
long queryTime = System.currentTimeMillis() - queryStartTime;
registerQueryExecutionTime(queryTime);
}
}
}
}
public String extractSqlFromPacket(String possibleSqlQuery, Buffer queryPacket, int endOfQueryPacketPosition) throws SQLException {
String extractedSql = null;
if (possibleSqlQuery != null) {
if (possibleSqlQuery.length() > getMaxQuerySizeToLog()) {
StringBuffer truncatedQueryBuf = new StringBuffer(possibleSqlQuery.substring(0, getMaxQuerySizeToLog()));
truncatedQueryBuf.append(Messages.getString("MysqlIO.25"));
extractedSql = truncatedQueryBuf.toString();
} else {
extractedSql = possibleSqlQuery;
}
}
if (extractedSql == null) {
// This is probably from a client-side prepared statement
int extractPosition = endOfQueryPacketPosition;
boolean truncated = false;
if (endOfQueryPacketPosition > getMaxQuerySizeToLog()) {
extractPosition = getMaxQuerySizeToLog();
truncated = true;
}
extractedSql = StringUtils.toString(queryPacket.getByteBuffer(), 5, (extractPosition - 5));
if (truncated) {
extractedSql += Messages.getString("MysqlIO.25");
}
}
return extractedSql;
}
public StringBuffer generateConnectionCommentBlock(StringBuffer buf) {
buf.append("/* conn id ");
buf.append(getId());
buf.append(" clock: ");
buf.append(System.currentTimeMillis());
buf.append(" */ ");
return buf;
}
public int getActiveStatementCount() {
// Might not have one of these if not tracking open resources
if (this.openStatements != null) {
synchronized (this.openStatements) {
return this.openStatements.size();
}
}
return 0;
}
/**
* Gets the current auto-commit state
*
* @return Current state of auto-commit
* @exception SQLException
* if an error occurs
* @see setAutoCommit
*/
public boolean getAutoCommit() throws SQLException {
synchronized (getConnectionMutex()) {
return this.autoCommit;
}
}
/**
* Optimization to only use one calendar per-session, or calculate it for
* each call, depending on user configuration
*/
public Calendar getCalendarInstanceForSessionOrNew() {
if (getDynamicCalendars()) {
return Calendar.getInstance();
}
return getSessionLockedCalendar();
}
/**
* Return the connections current catalog name, or null if no catalog name
* is set, or we dont support catalogs.
*
* Note: MySQL's notion of catalogs are individual databases.
*
*
* @return the current catalog name or null
* @exception SQLException
* if a database access error occurs
*/
public String getCatalog() throws SQLException {
synchronized (getConnectionMutex()) {
return this.database;
}
}
/**
* @return Returns the characterSetMetadata.
*/
public String getCharacterSetMetadata() {
synchronized (getConnectionMutex()) {
return this.characterSetMetadata;
}
}
/**
* Returns the locally mapped instance of a charset converter (to avoid
* overhead of static synchronization).
*
* @param javaEncodingName
* the encoding name to retrieve
* @return a character converter, or null if one couldn't be mapped.
*/
public SingleByteCharsetConverter getCharsetConverter(String javaEncodingName) throws SQLException {
if (javaEncodingName == null) {
return null;
}
if (this.usePlatformCharsetConverters) {
return null; // we'll use Java's built-in routines for this they're finally fast enough
}
SingleByteCharsetConverter converter = null;
synchronized (this.charsetConverterMap) {
Object asObject = this.charsetConverterMap.get(javaEncodingName);
if (asObject == CHARSET_CONVERTER_NOT_AVAILABLE_MARKER) {
return null;
}
converter = (SingleByteCharsetConverter) asObject;
if (converter == null) {
try {
converter = SingleByteCharsetConverter.getInstance(javaEncodingName, this);
if (converter == null) {
this.charsetConverterMap.put(javaEncodingName, CHARSET_CONVERTER_NOT_AVAILABLE_MARKER);
} else {
this.charsetConverterMap.put(javaEncodingName, converter);
}
} catch (UnsupportedEncodingException unsupEncEx) {
this.charsetConverterMap.put(javaEncodingName, CHARSET_CONVERTER_NOT_AVAILABLE_MARKER);
converter = null;
}
}
}
return converter;
}
/**
* @deprecated replaced by getEncodingForIndex(int charsetIndex)
*/
@Deprecated
public String getCharsetNameForIndex(int charsetIndex) throws SQLException {
return getEncodingForIndex(charsetIndex);
}
/**
* Returns the Java character encoding name for the given MySQL server
* charset index
*
* @param charsetIndex
* @return the Java character encoding name for the given MySQL server
* charset index
* @throws SQLException
* if the character set index isn't known by the driver
*/
public String getEncodingForIndex(int charsetIndex) throws SQLException {
String javaEncoding = null;
if (getUseOldUTF8Behavior()) {
return getEncoding();
}
if (charsetIndex != MysqlDefs.NO_CHARSET_INFO) {
try {
if (this.indexToMysqlCharset.size() > 0) {
javaEncoding = CharsetMapping.getJavaEncodingForMysqlCharset(this.indexToMysqlCharset.get(charsetIndex), getEncoding());
}
// checking against static maps if no custom charset found
if (javaEncoding == null) {
javaEncoding = CharsetMapping.getJavaEncodingForCollationIndex(charsetIndex, getEncoding());
}
} catch (ArrayIndexOutOfBoundsException outOfBoundsEx) {
throw SQLError.createSQLException("Unknown character set index for field '" + charsetIndex + "' received from server.",
SQLError.SQL_STATE_GENERAL_ERROR, getExceptionInterceptor());
} catch (RuntimeException ex) {
SQLException sqlEx = SQLError.createSQLException(ex.toString(), SQLError.SQL_STATE_ILLEGAL_ARGUMENT, null);
sqlEx.initCause(ex);
throw sqlEx;
}
// Punt
if (javaEncoding == null) {
javaEncoding = getEncoding();
}
} else {
javaEncoding = getEncoding();
}
return javaEncoding;
}
/**
* @return Returns the defaultTimeZone.
*/
public TimeZone getDefaultTimeZone() {
return this.defaultTimeZone;
}
public String getErrorMessageEncoding() {
return this.errorMessageEncoding;
}
/**
* @see Connection#getHoldability()
*/
public int getHoldability() throws SQLException {
return java.sql.ResultSet.CLOSE_CURSORS_AT_COMMIT;
}
public long getId() {
return this.connectionId;
}
/**
* NOT JDBC-Compliant, but clients can use this method to determine how long
* this connection has been idle. This time (reported in milliseconds) is
* updated once a query has completed.
*
* @return number of ms that this connection has been idle, 0 if the driver
* is busy retrieving results.
*/
public long getIdleFor() {
synchronized (getConnectionMutex()) {
if (this.lastQueryFinishedTime == 0) {
return 0;
}
long now = System.currentTimeMillis();
long idleTime = now - this.lastQueryFinishedTime;
return idleTime;
}
}
/**
* Returns the IO channel to the server
*
* @return the IO channel to the server
* @throws SQLException
* if the connection is closed.
*/
public MysqlIO getIO() throws SQLException {
if ((this.io == null) || this.isClosed) {
throw SQLError.createSQLException("Operation not allowed on closed connection", SQLError.SQL_STATE_CONNECTION_NOT_OPEN, getExceptionInterceptor());
}
return this.io;
}
/**
* Returns the log mechanism that should be used to log information from/for
* this Connection.
*
* @return the Log instance to use for logging messages.
* @throws SQLException
* if an error occurs
*/
public Log getLog() throws SQLException {
return this.log;
}
public int getMaxBytesPerChar(String javaCharsetName) throws SQLException {
return getMaxBytesPerChar(null, javaCharsetName);
}
public int getMaxBytesPerChar(Integer charsetIndex, String javaCharsetName) throws SQLException {
String charset = null;
try {
// if we can get it by charsetIndex just doing it
// getting charset name from dynamic maps in connection; we do it before checking against static maps because custom charset on server can be mapped
// to index from our static map key's diapason
if (this.indexToCustomMysqlCharset != null) {
charset = this.indexToCustomMysqlCharset.get(charsetIndex);
}
// checking against static maps if no custom charset found
if (charset == null) {
charset = CharsetMapping.getMysqlCharsetNameForCollationIndex(charsetIndex);
}
// if we didn't find charset name by index
if (charset == null) {
charset = CharsetMapping.getMysqlCharsetForJavaEncoding(javaCharsetName, this);
}
// checking against dynamic maps in connection
Integer mblen = null;
if (this.mysqlCharsetToCustomMblen != null) {
mblen = this.mysqlCharsetToCustomMblen.get(charset);
}
// checking against static maps
if (mblen == null) {
mblen = CharsetMapping.getMblen(charset);
}
if (mblen != null) {
return mblen.intValue();
}
} catch (SQLException ex) {
throw ex;
} catch (RuntimeException ex) {
SQLException sqlEx = SQLError.createSQLException(ex.toString(), SQLError.SQL_STATE_ILLEGAL_ARGUMENT, null);
sqlEx.initCause(ex);
throw sqlEx;
}
return 1; // we don't know
}
/**
* A connection's database is able to provide information describing its
* tables, its supported SQL grammar, its stored procedures, the
* capabilities of this connection, etc. This information is made available
* through a DatabaseMetaData object.
*
* @return a DatabaseMetaData object for this connection
* @exception SQLException
* if a database access error occurs
*/
public java.sql.DatabaseMetaData getMetaData() throws SQLException {
return getMetaData(true, true);
}
private java.sql.DatabaseMetaData getMetaData(boolean checkClosed, boolean checkForInfoSchema) throws SQLException {
if (checkClosed) {
checkClosed();
}
return com.mysql.jdbc.DatabaseMetaData.getInstance(getLoadBalanceSafeProxy(), this.database, checkForInfoSchema);
}
public java.sql.Statement getMetadataSafeStatement() throws SQLException {
java.sql.Statement stmt = createStatement();
if (stmt.getMaxRows() != 0) {
stmt.setMaxRows(0);
}
stmt.setEscapeProcessing(false);
if (stmt.getFetchSize() != 0) {
stmt.setFetchSize(0);
}
return stmt;
}
/**
* Returns the packet buffer size the MySQL server reported upon connection
*/
public int getNetBufferLength() {
return this.netBufferLength;
}
/**
* @deprecated replaced by getServerCharset()
*/
@Deprecated
public String getServerCharacterEncoding() {
return getServerCharset();
}
/**
* Returns the server's character set
*
* @return the server's character set.
*/
public String getServerCharset() {
if (this.io.versionMeetsMinimum(4, 1, 0)) {
String charset = null;
if (this.indexToCustomMysqlCharset != null) {
charset = this.indexToCustomMysqlCharset.get(this.io.serverCharsetIndex);
}
if (charset == null) {
charset = CharsetMapping.getMysqlCharsetNameForCollationIndex(this.io.serverCharsetIndex);
}
return charset != null ? charset : this.serverVariables.get("character_set_server");
}
return this.serverVariables.get("character_set");
}
public int getServerMajorVersion() {
return this.io.getServerMajorVersion();
}
public int getServerMinorVersion() {
return this.io.getServerMinorVersion();
}
public int getServerSubMinorVersion() {
return this.io.getServerSubMinorVersion();
}
public TimeZone getServerTimezoneTZ() {
return this.serverTimezoneTZ;
}
public String getServerVariable(String variableName) {
if (this.serverVariables != null) {
return this.serverVariables.get(variableName);
}
return null;
}
public String getServerVersion() {
return this.io.getServerVersion();
}
public Calendar getSessionLockedCalendar() {
return this.sessionCalendar;
}
/**
* Get this Connection's current transaction isolation mode.
*
* @return the current TRANSACTION_ mode value
* @exception SQLException
* if a database access error occurs
*/
public int getTransactionIsolation() throws SQLException {
synchronized (getConnectionMutex()) {
if (this.hasIsolationLevels && !getUseLocalSessionState()) {
java.sql.Statement stmt = null;
java.sql.ResultSet rs = null;
try {
stmt = getMetadataSafeStatement();
String query = null;
int offset = 0;
if (versionMeetsMinimum(4, 0, 3)) {
query = "SELECT @@session.tx_isolation";
offset = 1;
} else {
query = "SHOW VARIABLES LIKE 'transaction_isolation'";
offset = 2;
}
rs = stmt.executeQuery(query);
if (rs.next()) {
String s = rs.getString(offset);
if (s != null) {
Integer intTI = mapTransIsolationNameToValue.get(s);
if (intTI != null) {
return intTI.intValue();
}
}
throw SQLError.createSQLException("Could not map transaction isolation '" + s + " to a valid JDBC level.",
SQLError.SQL_STATE_GENERAL_ERROR, getExceptionInterceptor());
}
throw SQLError.createSQLException("Could not retrieve transaction isolation level from server", SQLError.SQL_STATE_GENERAL_ERROR,
getExceptionInterceptor());
} finally {
if (rs != null) {
try {
rs.close();
} catch (Exception ex) {
// ignore
}
rs = null;
}
if (stmt != null) {
try {
stmt.close();
} catch (Exception ex) {
// ignore
}
stmt = null;
}
}
}
return this.isolationLevel;
}
}
/**
* JDBC 2.0 Get the type-map object associated with this connection. By
* default, the map returned is empty.
*
* @return the type map
* @throws SQLException
* if a database error occurs
*/
public java.util.Map> getTypeMap() throws SQLException {
synchronized (getConnectionMutex()) {
if (this.typeMap == null) {
this.typeMap = new HashMap>();
}
return this.typeMap;
}
}
public String getURL() {
return this.myURL;
}
public String getUser() {
return this.user;
}
public Calendar getUtcCalendar() {
return this.utcCalendar;
}
/**
* The first warning reported by calls on this Connection is returned.
* Note: Sebsequent warnings will be changed to this
* java.sql.SQLWarning
*
* @return the first java.sql.SQLWarning or null
* @exception SQLException
* if a database access error occurs
*/
public SQLWarning getWarnings() throws SQLException {
return null;
}
public boolean hasSameProperties(Connection c) {
return this.props.equals(c.getProperties());
}
public Properties getProperties() {
return this.props;
}
public boolean hasTriedMaster() {
return this.hasTriedMasterFlag;
}
public void incrementNumberOfPreparedExecutes() {
if (getGatherPerformanceMetrics()) {
this.numberOfPreparedExecutes++;
// We need to increment this, because server-side prepared statements bypass any execution by the connection itself...
this.numberOfQueriesIssued++;
}
}
public void incrementNumberOfPrepares() {
if (getGatherPerformanceMetrics()) {
this.numberOfPrepares++;
}
}
public void incrementNumberOfResultSetsCreated() {
if (getGatherPerformanceMetrics()) {
this.numberOfResultSetsCreated++;
}
}
/**
* Initializes driver properties that come from URL or properties passed to
* the driver manager.
*
* @param info
* @throws SQLException
*/
private void initializeDriverProperties(Properties info) throws SQLException {
initializeProperties(info);
String exceptionInterceptorClasses = getExceptionInterceptors();
if (exceptionInterceptorClasses != null && !"".equals(exceptionInterceptorClasses)) {
this.exceptionInterceptor = new ExceptionInterceptorChain(exceptionInterceptorClasses);
}
this.usePlatformCharsetConverters = getUseJvmCharsetConverters();
this.log = LogFactory.getLogger(getLogger(), LOGGER_INSTANCE_NAME, getExceptionInterceptor());
if (getProfileSql() || getUseUsageAdvisor()) {
this.eventSink = ProfilerEventHandlerFactory.getInstance(getLoadBalanceSafeProxy());
}
if (getCachePreparedStatements()) {
createPreparedStatementCaches();
}
if (getNoDatetimeStringSync() && getUseTimezone()) {
throw SQLError.createSQLException("Can't enable noDatetimeStringSync and useTimezone configuration properties at the same time",
SQLError.SQL_STATE_INVALID_CONNECTION_ATTRIBUTE, getExceptionInterceptor());
}
if (getCacheCallableStatements()) {
this.parsedCallableStatementCache = new LRUCache(getCallableStatementCacheSize());
}
if (getAllowMultiQueries()) {
setCacheResultSetMetadata(false); // we don't handle this yet
}
if (getCacheResultSetMetadata()) {
this.resultSetMetadataCache = new LRUCache(getMetadataCacheSize());
}
}
/**
* Sets varying properties that depend on server information. Called once we
* have connected to the server.
*
* @param info
* @throws SQLException
*/
private void initializePropsFromServer() throws SQLException {
String connectionInterceptorClasses = getConnectionLifecycleInterceptors();
this.connectionLifecycleInterceptors = null;
if (connectionInterceptorClasses != null) {
this.connectionLifecycleInterceptors = Util.loadExtensions(this, this.props, connectionInterceptorClasses, "Connection.badLifecycleInterceptor",
getExceptionInterceptor());
}
setSessionVariables();
//
// the "boolean" type didn't come along until MySQL-4.1
//
if (!versionMeetsMinimum(4, 1, 0)) {
setTransformedBitIsBoolean(false);
}
this.parserKnowsUnicode = versionMeetsMinimum(4, 1, 0);
//
// Users can turn off detection of server-side prepared statements
//
if (getUseServerPreparedStmts() && versionMeetsMinimum(4, 1, 0)) {
this.useServerPreparedStmts = true;
if (versionMeetsMinimum(5, 0, 0) && !versionMeetsMinimum(5, 0, 3)) {
this.useServerPreparedStmts = false; // 4.1.2+ style prepared
// statements
// don't work on these versions
}
}
//
// If version is greater than 3.21.22 get the server variables.
if (versionMeetsMinimum(3, 21, 22)) {
loadServerVariables();
if (versionMeetsMinimum(5, 0, 2)) {
this.autoIncrementIncrement = getServerVariableAsInt("auto_increment_increment", 1);
} else {
this.autoIncrementIncrement = 1;
}
buildCollationMapping();
LicenseConfiguration.checkLicenseType(this.serverVariables);
String lowerCaseTables = this.serverVariables.get("lower_case_table_names");
this.lowerCaseTableNames = "on".equalsIgnoreCase(lowerCaseTables) || "1".equalsIgnoreCase(lowerCaseTables) || "2".equalsIgnoreCase(lowerCaseTables);
this.storesLowerCaseTableName = "1".equalsIgnoreCase(lowerCaseTables) || "on".equalsIgnoreCase(lowerCaseTables);
configureTimezone();
if (this.serverVariables.containsKey("max_allowed_packet")) {
int serverMaxAllowedPacket = getServerVariableAsInt("max_allowed_packet", -1);
// use server value if maxAllowedPacket hasn't been given, or max_allowed_packet is smaller
if (serverMaxAllowedPacket != -1 && (serverMaxAllowedPacket < getMaxAllowedPacket() || getMaxAllowedPacket() <= 0)) {
setMaxAllowedPacket(serverMaxAllowedPacket);
} else if (serverMaxAllowedPacket == -1 && getMaxAllowedPacket() == -1) {
setMaxAllowedPacket(65535);
}
if (getUseServerPrepStmts()) {
int preferredBlobSendChunkSize = getBlobSendChunkSize();
// LONG_DATA and MySQLIO packet header size
int packetHeaderSize = ServerPreparedStatement.BLOB_STREAM_READ_BUF_SIZE + 11;
int allowedBlobSendChunkSize = Math.min(preferredBlobSendChunkSize, getMaxAllowedPacket()) - packetHeaderSize;
if (allowedBlobSendChunkSize <= 0) {
throw SQLError.createSQLException("Connection setting too low for 'maxAllowedPacket'. "
+ "When 'useServerPrepStmts=true', 'maxAllowedPacket' must be higher than " + packetHeaderSize
+ ". Check also 'max_allowed_packet' in MySQL configuration files.", SQLError.SQL_STATE_INVALID_CONNECTION_ATTRIBUTE,
getExceptionInterceptor());
}
setBlobSendChunkSize(String.valueOf(allowedBlobSendChunkSize));
}
}
if (this.serverVariables.containsKey("net_buffer_length")) {
this.netBufferLength = getServerVariableAsInt("net_buffer_length", 16 * 1024);
}
checkTransactionIsolationLevel();
if (!versionMeetsMinimum(4, 1, 0)) {
checkServerEncoding();
}
this.io.checkForCharsetMismatch();
if (this.serverVariables.containsKey("sql_mode")) {
int sqlMode = 0;
String sqlModeAsString = this.serverVariables.get("sql_mode");
try {
sqlMode = Integer.parseInt(sqlModeAsString);
} catch (NumberFormatException nfe) {
// newer versions of the server has this as a string-y list...
sqlMode = 0;
if (sqlModeAsString != null) {
if (sqlModeAsString.indexOf("ANSI_QUOTES") != -1) {
sqlMode |= 4;
}
if (sqlModeAsString.indexOf("NO_BACKSLASH_ESCAPES") != -1) {
this.noBackslashEscapes = true;
}
}
}
if ((sqlMode & 4) > 0) {
this.useAnsiQuotes = true;
} else {
this.useAnsiQuotes = false;
}
}
}
boolean overrideDefaultAutocommit = isAutoCommitNonDefaultOnServer();
configureClientCharacterSet(false);
try {
this.errorMessageEncoding = CharsetMapping.getCharacterEncodingForErrorMessages(this);
} catch (SQLException ex) {
throw ex;
} catch (RuntimeException ex) {
SQLException sqlEx = SQLError.createSQLException(ex.toString(), SQLError.SQL_STATE_ILLEGAL_ARGUMENT, null);
sqlEx.initCause(ex);
throw sqlEx;
}
if (versionMeetsMinimum(3, 23, 15)) {
this.transactionsSupported = true;
if (!overrideDefaultAutocommit) {
try {
setAutoCommit(true); // to override anything the server is set to...reqd by JDBC spec.
} catch (SQLException ex) {
if (ex.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw ex;
}
}
}
} else {
this.transactionsSupported = false;
}
if (versionMeetsMinimum(3, 23, 36)) {
this.hasIsolationLevels = true;
} else {
this.hasIsolationLevels = false;
}
this.hasQuotedIdentifiers = versionMeetsMinimum(3, 23, 6);
this.io.resetMaxBuf();
//
// If we're using MySQL 4.1.0 or newer, we need to figure out what character set metadata will be returned in, and then map that to a Java encoding name
//
// We've already set it, and it might be different than what was originally on the server, which is why we use the "special" key to retrieve it
if (this.io.versionMeetsMinimum(4, 1, 0)) {
String characterSetResultsOnServerMysql = this.serverVariables.get(JDBC_LOCAL_CHARACTER_SET_RESULTS);
if (characterSetResultsOnServerMysql == null || StringUtils.startsWithIgnoreCaseAndWs(characterSetResultsOnServerMysql, "NULL")
|| characterSetResultsOnServerMysql.length() == 0) {
String defaultMetadataCharsetMysql = this.serverVariables.get("character_set_system");
String defaultMetadataCharset = null;
if (defaultMetadataCharsetMysql != null) {
defaultMetadataCharset = CharsetMapping.getJavaEncodingForMysqlCharset(defaultMetadataCharsetMysql);
} else {
defaultMetadataCharset = "UTF-8";
}
this.characterSetMetadata = defaultMetadataCharset;
} else {
this.characterSetResultsOnServer = CharsetMapping.getJavaEncodingForMysqlCharset(characterSetResultsOnServerMysql);
this.characterSetMetadata = this.characterSetResultsOnServer;
}
} else {
this.characterSetMetadata = getEncoding();
}
//
// Query cache is broken wrt. multi-statements before MySQL-4.1.10
//
if (versionMeetsMinimum(4, 1, 0) && !this.versionMeetsMinimum(4, 1, 10) && getAllowMultiQueries()) {
if (isQueryCacheEnabled()) {
setAllowMultiQueries(false);
}
}
if (versionMeetsMinimum(5, 0, 0) && (getUseLocalTransactionState() || getElideSetAutoCommits()) && isQueryCacheEnabled()
&& !versionMeetsMinimum(6, 0, 10)) {
// Can't trust the server status flag on the wire if query cache is enabled, due to Bug#36326
setUseLocalTransactionState(false);
setElideSetAutoCommits(false);
}
//
// Server can do this more efficiently for us
//
setupServerForTruncationChecks();
}
private boolean isQueryCacheEnabled() {
return "ON".equalsIgnoreCase(this.serverVariables.get("query_cache_type")) && !"0".equalsIgnoreCase(this.serverVariables.get("query_cache_size"));
}
private int getServerVariableAsInt(String variableName, int fallbackValue) throws SQLException {
try {
return Integer.parseInt(this.serverVariables.get(variableName));
} catch (NumberFormatException nfe) {
getLog().logWarn(
Messages.getString("Connection.BadValueInServerVariables",
new Object[] { variableName, this.serverVariables.get(variableName), Integer.valueOf(fallbackValue) }));
return fallbackValue;
}
}
/**
* Has the default autocommit value of 0 been changed on the server
* via init_connect?
*
* @return true if autocommit is not the default of '0' on the server.
*
* @throws SQLException
*/
private boolean isAutoCommitNonDefaultOnServer() throws SQLException {
boolean overrideDefaultAutocommit = false;
String initConnectValue = this.serverVariables.get("init_connect");
if (versionMeetsMinimum(4, 1, 2) && initConnectValue != null && initConnectValue.length() > 0) {
if (!getElideSetAutoCommits()) {
// auto-commit might have changed
java.sql.ResultSet rs = null;
java.sql.Statement stmt = null;
try {
stmt = getMetadataSafeStatement();
rs = stmt.executeQuery("SELECT @@session.autocommit");
if (rs.next()) {
this.autoCommit = rs.getBoolean(1);
if (this.autoCommit != true) {
overrideDefaultAutocommit = true;
}
}
} finally {
if (rs != null) {
try {
rs.close();
} catch (SQLException sqlEx) {
// do nothing
}
}
if (stmt != null) {
try {
stmt.close();
} catch (SQLException sqlEx) {
// do nothing
}
}
}
} else {
if (this.getIO().isSetNeededForAutoCommitMode(true)) {
// we're not in standard autocommit=true mode
this.autoCommit = false;
overrideDefaultAutocommit = true;
}
}
}
return overrideDefaultAutocommit;
}
public boolean isClientTzUTC() {
return this.isClientTzUTC;
}
public boolean isClosed() {
return this.isClosed;
}
public boolean isCursorFetchEnabled() throws SQLException {
return (versionMeetsMinimum(5, 0, 2) && getUseCursorFetch());
}
public boolean isInGlobalTx() {
return this.isInGlobalTx;
}
/**
* Is this connection connected to the first host in the list if
* there is a list of servers in the URL?
*
* @return true if this connection is connected to the first in
* the list.
*/
public boolean isMasterConnection() {
synchronized (getConnectionMutex()) {
return false; // handled higher up
}
}
/**
* Is the server in a sql_mode that doesn't allow us to use \\ to escape
* things?
*
* @return Returns the noBackslashEscapes.
*/
public boolean isNoBackslashEscapesSet() {
return this.noBackslashEscapes;
}
public boolean isReadInfoMsgEnabled() {
return this.readInfoMsg;
}
/**
* Tests to see if the connection is in Read Only Mode. Note that prior to 5.6,
* we cannot really put the database in read only mode, but we pretend we can by
* returning the value of the readOnly flag
*
* @return true if the connection is read only
* @exception SQLException
* if a database access error occurs
*/
public boolean isReadOnly() throws SQLException {
return isReadOnly(true);
}
/**
* Tests to see if the connection is in Read Only Mode. Note that prior to 5.6,
* we cannot really put the database in read only mode, but we pretend we can by
* returning the value of the readOnly flag
*
* @param useSessionStatus
* in some cases, for example when restoring connection with autoReconnect=true,
* we can rely only on saved readOnly state, so use useSessionStatus=false in that case
*
* @return true if the connection is read only
* @exception SQLException
* if a database access error occurs
*/
public boolean isReadOnly(boolean useSessionStatus) throws SQLException {
if (useSessionStatus && !this.isClosed && versionMeetsMinimum(5, 6, 5) && !getUseLocalSessionState()) {
java.sql.Statement stmt = null;
java.sql.ResultSet rs = null;
try {
try {
stmt = getMetadataSafeStatement();
rs = stmt.executeQuery("select @@session.tx_read_only");
if (rs.next()) {
return rs.getInt(1) != 0; // mysql has a habit of tri+ state booleans
}
} catch (SQLException ex1) {
if (ex1.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw SQLError.createSQLException("Could not retrieve transation read-only status server", SQLError.SQL_STATE_GENERAL_ERROR, ex1,
getExceptionInterceptor());
}
}
} finally {
if (rs != null) {
try {
rs.close();
} catch (Exception ex) {
// ignore
}
rs = null;
}
if (stmt != null) {
try {
stmt.close();
} catch (Exception ex) {
// ignore
}
stmt = null;
}
}
}
return this.readOnly;
}
public boolean isRunningOnJDK13() {
return this.isRunningOnJDK13;
}
public boolean isSameResource(Connection otherConnection) {
synchronized (getConnectionMutex()) {
if (otherConnection == null) {
return false;
}
boolean directCompare = true;
String otherHost = ((ConnectionImpl) otherConnection).origHostToConnectTo;
String otherOrigDatabase = ((ConnectionImpl) otherConnection).origDatabaseToConnectTo;
String otherCurrentCatalog = ((ConnectionImpl) otherConnection).database;
if (!nullSafeCompare(otherHost, this.origHostToConnectTo)) {
directCompare = false;
} else if (otherHost != null && otherHost.indexOf(',') == -1 && otherHost.indexOf(':') == -1) {
// need to check port numbers
directCompare = (((ConnectionImpl) otherConnection).origPortToConnectTo == this.origPortToConnectTo);
}
if (directCompare) {
if (!nullSafeCompare(otherOrigDatabase, this.origDatabaseToConnectTo) || !nullSafeCompare(otherCurrentCatalog, this.database)) {
directCompare = false;
}
}
if (directCompare) {
return true;
}
// Has the user explicitly set a resourceId?
String otherResourceId = ((ConnectionImpl) otherConnection).getResourceId();
String myResourceId = getResourceId();
if (otherResourceId != null || myResourceId != null) {
directCompare = nullSafeCompare(otherResourceId, myResourceId);
if (directCompare) {
return true;
}
}
return false;
}
}
public boolean isServerTzUTC() {
return this.isServerTzUTC;
}
private boolean usingCachedConfig = false;
private void createConfigCacheIfNeeded() throws SQLException {
synchronized (getConnectionMutex()) {
if (this.serverConfigCache != null) {
return;
}
try {
Class factoryClass;
factoryClass = Class.forName(getServerConfigCacheFactory());
@SuppressWarnings("unchecked")
CacheAdapterFactory> cacheFactory = ((CacheAdapterFactory>) factoryClass.newInstance());
this.serverConfigCache = cacheFactory.getInstance(this, this.myURL, Integer.MAX_VALUE, Integer.MAX_VALUE, this.props);
ExceptionInterceptor evictOnCommsError = new ExceptionInterceptor() {
public void init(Connection conn, Properties config) throws SQLException {
}
public void destroy() {
}
@SuppressWarnings("synthetic-access")
public SQLException interceptException(SQLException sqlEx, Connection conn) {
if (sqlEx.getSQLState() != null && sqlEx.getSQLState().startsWith("08")) {
ConnectionImpl.this.serverConfigCache.invalidate(getURL());
}
return null;
}
};
if (this.exceptionInterceptor == null) {
this.exceptionInterceptor = evictOnCommsError;
} else {
((ExceptionInterceptorChain) this.exceptionInterceptor).addRingZero(evictOnCommsError);
}
} catch (ClassNotFoundException e) {
SQLException sqlEx = SQLError.createSQLException(
Messages.getString("Connection.CantFindCacheFactory", new Object[] { getParseInfoCacheFactory(), "parseInfoCacheFactory" }),
getExceptionInterceptor());
sqlEx.initCause(e);
throw sqlEx;
} catch (InstantiationException e) {
SQLException sqlEx = SQLError.createSQLException(
Messages.getString("Connection.CantLoadCacheFactory", new Object[] { getParseInfoCacheFactory(), "parseInfoCacheFactory" }),
getExceptionInterceptor());
sqlEx.initCause(e);
throw sqlEx;
} catch (IllegalAccessException e) {
SQLException sqlEx = SQLError.createSQLException(
Messages.getString("Connection.CantLoadCacheFactory", new Object[] { getParseInfoCacheFactory(), "parseInfoCacheFactory" }),
getExceptionInterceptor());
sqlEx.initCause(e);
throw sqlEx;
}
}
}
private final static String SERVER_VERSION_STRING_VAR_NAME = "server_version_string";
/**
* Loads the result of 'SHOW VARIABLES' into the serverVariables field so
* that the driver can configure itself.
*
* @throws SQLException
* if the 'SHOW VARIABLES' query fails for any reason.
*/
private void loadServerVariables() throws SQLException {
if (getCacheServerConfiguration()) {
createConfigCacheIfNeeded();
Map cachedVariableMap = this.serverConfigCache.get(getURL());
if (cachedVariableMap != null) {
String cachedServerVersion = cachedVariableMap.get(SERVER_VERSION_STRING_VAR_NAME);
if (cachedServerVersion != null && this.io.getServerVersion() != null && cachedServerVersion.equals(this.io.getServerVersion())) {
this.serverVariables = cachedVariableMap;
this.usingCachedConfig = true;
return;
}
this.serverConfigCache.invalidate(getURL());
}
}
java.sql.Statement stmt = null;
java.sql.ResultSet results = null;
try {
stmt = getMetadataSafeStatement();
String version = this.dbmd.getDriverVersion();
if (version != null && version.indexOf('*') != -1) {
StringBuffer buf = new StringBuffer(version.length() + 10);
for (int i = 0; i < version.length(); i++) {
char c = version.charAt(i);
if (c == '*') {
buf.append("[star]");
} else {
buf.append(c);
}
}
version = buf.toString();
}
String versionComment = (this.getParanoid() || version == null) ? "" : "/* " + version + " */";
String query = versionComment + "SHOW VARIABLES";
if (versionMeetsMinimum(5, 0, 3)) {
query = versionComment + "SHOW VARIABLES WHERE Variable_name ='language' OR Variable_name = 'net_write_timeout'"
+ " OR Variable_name = 'interactive_timeout' OR Variable_name = 'wait_timeout' OR Variable_name = 'character_set_client'"
+ " OR Variable_name = 'character_set_connection' OR Variable_name = 'character_set' OR Variable_name = 'character_set_server'"
+ " OR Variable_name = 'tx_isolation' OR Variable_name = 'transaction_isolation' OR Variable_name = 'character_set_results'"
+ " OR Variable_name = 'timezone' OR Variable_name = 'time_zone' OR Variable_name = 'system_time_zone'"
+ " OR Variable_name = 'lower_case_table_names' OR Variable_name = 'max_allowed_packet' OR Variable_name = 'net_buffer_length'"
+ " OR Variable_name = 'sql_mode' OR Variable_name = 'query_cache_type' OR Variable_name = 'query_cache_size'"
+ " OR Variable_name = 'license' OR Variable_name = 'init_connect'";
}
this.serverVariables = new HashMap();
try {
results = stmt.executeQuery(query);
while (results.next()) {
this.serverVariables.put(results.getString(1), results.getString(2));
}
results.close();
results = null;
} catch (SQLException ex) {
if (ex.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw ex;
}
}
if (versionMeetsMinimum(5, 0, 2)) {
try {
results = stmt.executeQuery(versionComment + "SELECT @@session.auto_increment_increment");
if (results.next()) {
this.serverVariables.put("auto_increment_increment", results.getString(1));
}
} catch (SQLException ex) {
if (ex.getErrorCode() != MysqlErrorNumbers.ER_MUST_CHANGE_PASSWORD || getDisconnectOnExpiredPasswords()) {
throw ex;
}
}
}
if (getCacheServerConfiguration()) {
this.serverVariables.put(SERVER_VERSION_STRING_VAR_NAME, this.io.getServerVersion());
this.serverConfigCache.put(getURL(), this.serverVariables);
this.usingCachedConfig = true;
}
} catch (SQLException e) {
throw e;
} finally {
if (results != null) {
try {
results.close();
} catch (SQLException sqlE) {
}
}
if (stmt != null) {
try {
stmt.close();
} catch (SQLException sqlE) {
}
}
}
}
private int autoIncrementIncrement = 0;
public int getAutoIncrementIncrement() {
return this.autoIncrementIncrement;
}
/**
* Is the server configured to use lower-case table names only?
*
* @return true if lower_case_table_names is 'on'
*/
public boolean lowerCaseTableNames() {
return this.lowerCaseTableNames;
}
/**
* A driver may convert the JDBC sql grammar into its system's native SQL
* grammar prior to sending it; nativeSQL returns the native form of the
* statement that the driver would have sent.
*
* @param sql
* a SQL statement that may contain one or more '?' parameter
* placeholders
* @return the native form of this statement
* @exception SQLException
* if a database access error occurs
*/
public String nativeSQL(String sql) throws SQLException {
if (sql == null) {
return null;
}
Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, serverSupportsConvertFn(), getLoadBalanceSafeProxy());
if (escapedSqlResult instanceof String) {
return (String) escapedSqlResult;
}
return ((EscapeProcessorResult) escapedSqlResult).escapedSql;
}
private CallableStatement parseCallableStatement(String sql) throws SQLException {
Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, serverSupportsConvertFn(), getLoadBalanceSafeProxy());
boolean isFunctionCall = false;
String parsedSql = null;
if (escapedSqlResult instanceof EscapeProcessorResult) {
parsedSql = ((EscapeProcessorResult) escapedSqlResult).escapedSql;
isFunctionCall = ((EscapeProcessorResult) escapedSqlResult).callingStoredFunction;
} else {
parsedSql = (String) escapedSqlResult;
isFunctionCall = false;
}
return CallableStatement.getInstance(getLoadBalanceSafeProxy(), parsedSql, this.database, isFunctionCall);
}
public boolean parserKnowsUnicode() {
return this.parserKnowsUnicode;
}
/**
* Detect if the connection is still good
*
* @throws SQLException
* if the ping fails
*/
public void ping() throws SQLException {
pingInternal(true, 0);
}
public void pingInternal(boolean checkForClosedConnection, int timeoutMillis) throws SQLException {
if (checkForClosedConnection) {
checkClosed();
}
long pingMillisLifetime = getSelfDestructOnPingSecondsLifetime();
int pingMaxOperations = getSelfDestructOnPingMaxOperations();
if ((pingMillisLifetime > 0 && (System.currentTimeMillis() - this.connectionCreationTimeMillis) > pingMillisLifetime)
|| (pingMaxOperations > 0 && pingMaxOperations <= this.io.getCommandCount())) {
close();
throw SQLError.createSQLException(Messages.getString("Connection.exceededConnectionLifetime"), SQLError.SQL_STATE_COMMUNICATION_LINK_FAILURE,
getExceptionInterceptor());
}
// Need MySQL-3.22.1, but who uses anything older!?
this.io.sendCommand(MysqlDefs.PING, null, null, false, null, timeoutMillis);
}
/**
* @param sql
* @throws SQLException
*/
public java.sql.CallableStatement prepareCall(String sql) throws SQLException {
return prepareCall(sql, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY);
}
/**
* JDBC 2.0 Same as prepareCall() above, but allows the default result set
* type and result set concurrency type to be overridden.
*
* @param sql
* the SQL representing the callable statement
* @param resultSetType
* a result set type, see ResultSet.TYPE_XXX
* @param resultSetConcurrency
* a concurrency type, see ResultSet.CONCUR_XXX
* @return a new CallableStatement object containing the pre-compiled SQL
* statement
* @exception SQLException
* if a database-access error occurs.
*/
public java.sql.CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
if (versionMeetsMinimum(5, 0, 0)) {
CallableStatement cStmt = null;
if (!getCacheCallableStatements()) {
cStmt = parseCallableStatement(sql);
} else {
synchronized (this.parsedCallableStatementCache) {
CompoundCacheKey key = new CompoundCacheKey(getCatalog(), sql);
CallableStatement.CallableStatementParamInfo cachedParamInfo = (CallableStatement.CallableStatementParamInfo) this.parsedCallableStatementCache
.get(key);
if (cachedParamInfo != null) {
cStmt = CallableStatement.getInstance(getLoadBalanceSafeProxy(), cachedParamInfo);
} else {
cStmt = parseCallableStatement(sql);
synchronized (cStmt) {
cachedParamInfo = cStmt.paramInfo;
}
this.parsedCallableStatementCache.put(key, cachedParamInfo);
}
}
}
cStmt.setResultSetType(resultSetType);
cStmt.setResultSetConcurrency(resultSetConcurrency);
return cStmt;
}
throw SQLError.createSQLException("Callable statements not supported.", SQLError.SQL_STATE_DRIVER_NOT_CAPABLE, getExceptionInterceptor());
}
/**
* @see Connection#prepareCall(String, int, int, int)
*/
public java.sql.CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
if (getPedantic()) {
if (resultSetHoldability != java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT) {
throw SQLError.createSQLException("HOLD_CUSRORS_OVER_COMMIT is only supported holdability level", SQLError.SQL_STATE_ILLEGAL_ARGUMENT,
getExceptionInterceptor());
}
}
CallableStatement cStmt = (com.mysql.jdbc.CallableStatement) prepareCall(sql, resultSetType, resultSetConcurrency);
return cStmt;
}
/**
* A SQL statement with or without IN parameters can be pre-compiled and
* stored in a PreparedStatement object. This object can then be used to
* efficiently execute this statement multiple times.
*
* Note: This method is optimized for handling parametric SQL statements that benefit from precompilation if the driver supports precompilation. In
* this case, the statement is not sent to the database until the PreparedStatement is executed. This has no direct effect on users; however it does affect
* which method throws certain java.sql.SQLExceptions
*
*
* MySQL does not support precompilation of statements, so they are handled by the driver.
*
*
* @param sql
* a SQL statement that may contain one or more '?' IN parameter
* placeholders
* @return a new PreparedStatement object containing the pre-compiled
* statement.
* @exception SQLException
* if a database access error occurs.
*/
public java.sql.PreparedStatement prepareStatement(String sql) throws SQLException {
return prepareStatement(sql, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY);
}
/**
* @see Connection#prepareStatement(String, int)
*/
public java.sql.PreparedStatement prepareStatement(String sql, int autoGenKeyIndex) throws SQLException {
java.sql.PreparedStatement pStmt = prepareStatement(sql);
((com.mysql.jdbc.PreparedStatement) pStmt).setRetrieveGeneratedKeys(autoGenKeyIndex == java.sql.Statement.RETURN_GENERATED_KEYS);
return pStmt;
}
/**
* JDBC 2.0 Same as prepareStatement() above, but allows the default result
* set type and result set concurrency type to be overridden.
*
* @param sql
* the SQL query containing place holders
* @param resultSetType
* a result set type, see ResultSet.TYPE_XXX
* @param resultSetConcurrency
* a concurrency type, see ResultSet.CONCUR_XXX
* @return a new PreparedStatement object containing the pre-compiled SQL
* statement
* @exception SQLException
* if a database-access error occurs.
*/
public java.sql.PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
synchronized (getConnectionMutex()) {
checkClosed();
//
// FIXME: Create warnings if can't create results of the given type or concurrency
//
PreparedStatement pStmt = null;
boolean canServerPrepare = true;
String nativeSql = getProcessEscapeCodesForPrepStmts() ? nativeSQL(sql) : sql;
if (this.useServerPreparedStmts && getEmulateUnsupportedPstmts()) {
canServerPrepare = canHandleAsServerPreparedStatement(nativeSql);
}
if (this.useServerPreparedStmts && canServerPrepare) {
if (this.getCachePreparedStatements()) {
synchronized (this.serverSideStatementCache) {
pStmt = (com.mysql.jdbc.ServerPreparedStatement) this.serverSideStatementCache.remove(sql);
if (pStmt != null) {
((com.mysql.jdbc.ServerPreparedStatement) pStmt).setClosed(false);
pStmt.clearParameters();
}
if (pStmt == null) {
try {
pStmt = ServerPreparedStatement.getInstance(getLoadBalanceSafeProxy(), nativeSql, this.database, resultSetType,
resultSetConcurrency);
if (sql.length() < getPreparedStatementCacheSqlLimit()) {
((com.mysql.jdbc.ServerPreparedStatement) pStmt).isCached = true;
}
pStmt.setResultSetType(resultSetType);
pStmt.setResultSetConcurrency(resultSetConcurrency);
} catch (SQLException sqlEx) {
// Punt, if necessary
if (getEmulateUnsupportedPstmts()) {
pStmt = (PreparedStatement) clientPrepareStatement(nativeSql, resultSetType, resultSetConcurrency, false);
if (sql.length() < getPreparedStatementCacheSqlLimit()) {
this.serverSideStatementCheckCache.put(sql, Boolean.FALSE);
}
} else {
throw sqlEx;
}
}
}
}
} else {
try {
pStmt = ServerPreparedStatement.getInstance(getLoadBalanceSafeProxy(), nativeSql, this.database, resultSetType, resultSetConcurrency);
pStmt.setResultSetType(resultSetType);
pStmt.setResultSetConcurrency(resultSetConcurrency);
} catch (SQLException sqlEx) {
// Punt, if necessary
if (getEmulateUnsupportedPstmts()) {
pStmt = (PreparedStatement) clientPrepareStatement(nativeSql, resultSetType, resultSetConcurrency, false);
} else {
throw sqlEx;
}
}
}
} else {
pStmt = (PreparedStatement) clientPrepareStatement(nativeSql, resultSetType, resultSetConcurrency, false);
}
return pStmt;
}
}
/**
* @see Connection#prepareStatement(String, int, int, int)
*/
public java.sql.PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
if (getPedantic()) {
if (resultSetHoldability != java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT) {
throw SQLError.createSQLException("HOLD_CUSRORS_OVER_COMMIT is only supported holdability level", SQLError.SQL_STATE_ILLEGAL_ARGUMENT,
getExceptionInterceptor());
}
}
return prepareStatement(sql, resultSetType, resultSetConcurrency);
}
/**
* @see Connection#prepareStatement(String, int[])
*/
public java.sql.PreparedStatement prepareStatement(String sql, int[] autoGenKeyIndexes) throws SQLException {
java.sql.PreparedStatement pStmt = prepareStatement(sql);
((com.mysql.jdbc.PreparedStatement) pStmt).setRetrieveGeneratedKeys((autoGenKeyIndexes != null) && (autoGenKeyIndexes.length > 0));
return pStmt;
}
/**
* @see Connection#prepareStatement(String, String[])
*/
public java.sql.PreparedStatement prepareStatement(String sql, String[] autoGenKeyColNames) throws SQLException {
java.sql.PreparedStatement pStmt = prepareStatement(sql);
((com.mysql.jdbc.PreparedStatement) pStmt).setRetrieveGeneratedKeys((autoGenKeyColNames != null) && (autoGenKeyColNames.length > 0));
return pStmt;
}
/**
* Closes connection and frees resources.
*
* @param calledExplicitly
* is this being called from close()
* @param issueRollback
* should a rollback() be issued?
* @throws SQLException
* if an error occurs
*/
public void realClose(boolean calledExplicitly, boolean issueRollback, boolean skipLocalTeardown, Throwable reason) throws SQLException {
SQLException sqlEx = null;
if (this.isClosed()) {
return;
}
this.forceClosedReason = reason;
try {
if (!skipLocalTeardown) {
if (!getAutoCommit() && issueRollback) {
try {
rollback();
} catch (SQLException ex) {
sqlEx = ex;
}
}
reportMetrics();
if (getUseUsageAdvisor()) {
if (!calledExplicitly) {
String message = "Connection implicitly closed by Driver. You should call Connection.close() from your code to free resources more efficiently and avoid resource leaks.";
this.eventSink.consumeEvent(new ProfilerEvent(ProfilerEvent.TYPE_WARN, "", this.getCatalog(), this.getId(), -1, -1, System
.currentTimeMillis(), 0, Constants.MILLIS_I18N, null, this.pointOfOrigin, message));
}
long connectionLifeTime = System.currentTimeMillis() - this.connectionCreationTimeMillis;
if (connectionLifeTime < 500) {
String message = "Connection lifetime of < .5 seconds. You might be un-necessarily creating short-lived connections and should investigate connection pooling to be more efficient.";
this.eventSink.consumeEvent(new ProfilerEvent(ProfilerEvent.TYPE_WARN, "", this.getCatalog(), this.getId(), -1, -1, System
.currentTimeMillis(), 0, Constants.MILLIS_I18N, null, this.pointOfOrigin, message));
}
}
try {
closeAllOpenStatements();
} catch (SQLException ex) {
sqlEx = ex;
}
if (this.io != null) {
try {
this.io.quit();
} catch (Exception e) {
}
}
} else {
this.io.forceClose();
}
if (this.statementInterceptors != null) {
for (int i = 0; i < this.statementInterceptors.size(); i++) {
this.statementInterceptors.get(i).destroy();
}
}
if (this.exceptionInterceptor != null) {
this.exceptionInterceptor.destroy();
}
} finally {
this.openStatements = null;
if (this.io != null) {
this.io.releaseResources();
this.io = null;
}
this.statementInterceptors = null;
this.exceptionInterceptor = null;
ProfilerEventHandlerFactory.removeInstance(this);
synchronized (getConnectionMutex()) {
if (this.cancelTimer != null) {
this.cancelTimer.cancel();
}
}
this.isClosed = true;
}
if (sqlEx != null) {
throw sqlEx;
}
}
public void recachePreparedStatement(ServerPreparedStatement pstmt) throws SQLException {
synchronized (getConnectionMutex()) {
if (pstmt.isPoolable()) {
synchronized (this.serverSideStatementCache) {
this.serverSideStatementCache.put(pstmt.originalSql, pstmt);
}
}
}
}
public void decachePreparedStatement(ServerPreparedStatement pstmt) throws SQLException {
synchronized (getConnectionMutex()) {
if (pstmt.isPoolable()) {
synchronized (this.serverSideStatementCache) {
this.serverSideStatementCache.remove(pstmt.originalSql);
}
}
}
}
/**
* @param queryTimeMs
*/
public void registerQueryExecutionTime(long queryTimeMs) {
if (queryTimeMs > this.longestQueryTimeMs) {
this.longestQueryTimeMs = queryTimeMs;
repartitionPerformanceHistogram();
}
addToPerformanceHistogram(queryTimeMs, 1);
if (queryTimeMs < this.shortestQueryTimeMs) {
this.shortestQueryTimeMs = (queryTimeMs == 0) ? 1 : queryTimeMs;
}
this.numberOfQueriesIssued++;
this.totalQueryTimeMs += queryTimeMs;
}
/**
* Register a Statement instance as open.
*
* @param stmt
* the Statement instance to remove
*/
public void registerStatement(Statement stmt) {
synchronized (this.openStatements) {
this.openStatements.put(stmt, stmt);
}
}
/**
* @see Connection#releaseSavepoint(Savepoint)
*/
public void releaseSavepoint(Savepoint arg0) throws SQLException {
// this is a no-op
}
private void repartitionHistogram(int[] histCounts, long[] histBreakpoints, long currentLowerBound, long currentUpperBound) {
if (this.oldHistCounts == null) {
this.oldHistCounts = new int[histCounts.length];
this.oldHistBreakpoints = new long[histBreakpoints.length];
}
System.arraycopy(histCounts, 0, this.oldHistCounts, 0, histCounts.length);
System.arraycopy(histBreakpoints, 0, this.oldHistBreakpoints, 0, histBreakpoints.length);
createInitialHistogram(histBreakpoints, currentLowerBound, currentUpperBound);
for (int i = 0; i < HISTOGRAM_BUCKETS; i++) {
addToHistogram(histCounts, histBreakpoints, this.oldHistBreakpoints[i], this.oldHistCounts[i], currentLowerBound, currentUpperBound);
}
}
private void repartitionPerformanceHistogram() {
checkAndCreatePerformanceHistogram();
repartitionHistogram(this.perfMetricsHistCounts, this.perfMetricsHistBreakpoints, this.shortestQueryTimeMs == Long.MAX_VALUE ? 0
: this.shortestQueryTimeMs, this.longestQueryTimeMs);
}
private void repartitionTablesAccessedHistogram() {
checkAndCreateTablesAccessedHistogram();
repartitionHistogram(this.numTablesMetricsHistCounts, this.numTablesMetricsHistBreakpoints, this.minimumNumberTablesAccessed == Long.MAX_VALUE ? 0
: this.minimumNumberTablesAccessed, this.maximumNumberTablesAccessed);
}
private void reportMetrics() {
if (getGatherPerformanceMetrics()) {
StringBuffer logMessage = new StringBuffer(256);
logMessage.append("** Performance Metrics Report **\n");
logMessage.append("\nLongest reported query: " + this.longestQueryTimeMs + " ms");
logMessage.append("\nShortest reported query: " + this.shortestQueryTimeMs + " ms");
logMessage.append("\nAverage query execution time: " + (this.totalQueryTimeMs / this.numberOfQueriesIssued) + " ms");
logMessage.append("\nNumber of statements executed: " + this.numberOfQueriesIssued);
logMessage.append("\nNumber of result sets created: " + this.numberOfResultSetsCreated);
logMessage.append("\nNumber of statements prepared: " + this.numberOfPrepares);
logMessage.append("\nNumber of prepared statement executions: " + this.numberOfPreparedExecutes);
if (this.perfMetricsHistBreakpoints != null) {
logMessage.append("\n\n\tTiming Histogram:\n");
int maxNumPoints = 20;
int highestCount = Integer.MIN_VALUE;
for (int i = 0; i < (HISTOGRAM_BUCKETS); i++) {
if (this.perfMetricsHistCounts[i] > highestCount) {
highestCount = this.perfMetricsHistCounts[i];
}
}
if (highestCount == 0) {
highestCount = 1; // avoid DIV/0
}
for (int i = 0; i < (HISTOGRAM_BUCKETS - 1); i++) {
if (i == 0) {
logMessage.append("\n\tless than " + this.perfMetricsHistBreakpoints[i + 1] + " ms: \t" + this.perfMetricsHistCounts[i]);
} else {
logMessage.append("\n\tbetween " + this.perfMetricsHistBreakpoints[i] + " and " + this.perfMetricsHistBreakpoints[i + 1] + " ms: \t"
+ this.perfMetricsHistCounts[i]);
}
logMessage.append("\t");
int numPointsToGraph = (int) (maxNumPoints * ((double) this.perfMetricsHistCounts[i] / (double) highestCount));
for (int j = 0; j < numPointsToGraph; j++) {
logMessage.append("*");
}
if (this.longestQueryTimeMs < this.perfMetricsHistCounts[i + 1]) {
break;
}
}
if (this.perfMetricsHistBreakpoints[HISTOGRAM_BUCKETS - 2] < this.longestQueryTimeMs) {
logMessage.append("\n\tbetween ");
logMessage.append(this.perfMetricsHistBreakpoints[HISTOGRAM_BUCKETS - 2]);
logMessage.append(" and ");
logMessage.append(this.perfMetricsHistBreakpoints[HISTOGRAM_BUCKETS - 1]);
logMessage.append(" ms: \t");
logMessage.append(this.perfMetricsHistCounts[HISTOGRAM_BUCKETS - 1]);
}
}
if (this.numTablesMetricsHistBreakpoints != null) {
logMessage.append("\n\n\tTable Join Histogram:\n");
int maxNumPoints = 20;
int highestCount = Integer.MIN_VALUE;
for (int i = 0; i < (HISTOGRAM_BUCKETS); i++) {
if (this.numTablesMetricsHistCounts[i] > highestCount) {
highestCount = this.numTablesMetricsHistCounts[i];
}
}
if (highestCount == 0) {
highestCount = 1; // avoid DIV/0
}
for (int i = 0; i < (HISTOGRAM_BUCKETS - 1); i++) {
if (i == 0) {
logMessage.append("\n\t" + this.numTablesMetricsHistBreakpoints[i + 1] + " tables or less: \t\t" + this.numTablesMetricsHistCounts[i]);
} else {
logMessage.append("\n\tbetween " + this.numTablesMetricsHistBreakpoints[i] + " and " + this.numTablesMetricsHistBreakpoints[i + 1]
+ " tables: \t" + this.numTablesMetricsHistCounts[i]);
}
logMessage.append("\t");
int numPointsToGraph = (int) (maxNumPoints * ((double) this.numTablesMetricsHistCounts[i] / (double) highestCount));
for (int j = 0; j < numPointsToGraph; j++) {
logMessage.append("*");
}
if (this.maximumNumberTablesAccessed < this.numTablesMetricsHistBreakpoints[i + 1]) {
break;
}
}
if (this.numTablesMetricsHistBreakpoints[HISTOGRAM_BUCKETS - 2] < this.maximumNumberTablesAccessed) {
logMessage.append("\n\tbetween ");
logMessage.append(this.numTablesMetricsHistBreakpoints[HISTOGRAM_BUCKETS - 2]);
logMessage.append(" and ");
logMessage.append(this.numTablesMetricsHistBreakpoints[HISTOGRAM_BUCKETS - 1]);
logMessage.append(" tables: ");
logMessage.append(this.numTablesMetricsHistCounts[HISTOGRAM_BUCKETS - 1]);
}
}
this.log.logInfo(logMessage);
this.metricsLastReportedMs = System.currentTimeMillis();
}
}
/**
* Reports currently collected metrics if this feature is enabled and the
* timeout has passed.
*/
protected void reportMetricsIfNeeded() {
if (getGatherPerformanceMetrics()) {
if ((System.currentTimeMillis() - this.metricsLastReportedMs) > getReportMetricsIntervalMillis()) {
reportMetrics();
}
}
}
public void reportNumberOfTablesAccessed(int numTablesAccessed) {
if (numTablesAccessed < this.minimumNumberTablesAccessed) {
this.minimumNumberTablesAccessed = numTablesAccessed;
}
if (numTablesAccessed > this.maximumNumberTablesAccessed) {
this.maximumNumberTablesAccessed = numTablesAccessed;
repartitionTablesAccessedHistogram();
}
addToTablesAccessedHistogram(numTablesAccessed, 1);
}
/**
* Resets the server-side state of this connection. Doesn't work for MySQL
* versions older than 4.0.6 or if isParanoid() is set (it will become a
* no-op in these cases). Usually only used from connection pooling code.
*
* @throws SQLException
* if the operation fails while resetting server state.
*/
public void resetServerState() throws SQLException {
if (!getParanoid() && ((this.io != null) && versionMeetsMinimum(4, 0, 6))) {
changeUser(this.user, this.password);
}
}
/**
* The method rollback() drops all changes made since the previous
* commit/rollback and releases any database locks currently held by the
* Connection.
*
* @exception SQLException
* if a database access error occurs
* @see commit
*/
public void rollback() throws SQLException {
synchronized (getConnectionMutex()) {
checkClosed();
try {
if (this.connectionLifecycleInterceptors != null) {
IterateBlock iter = new IterateBlock(this.connectionLifecycleInterceptors.iterator()) {
@Override
void forEach(Extension each) throws SQLException {
if (!((ConnectionLifecycleInterceptor) each).rollback()) {
this.stopIterating = true;
}
}
};
iter.doForAll();
if (!iter.fullIteration()) {
return;
}
}
// no-op if _relaxAutoCommit == true
if (this.autoCommit && !getRelaxAutoCommit()) {
throw SQLError.createSQLException("Can't call rollback when autocommit=true", SQLError.SQL_STATE_CONNECTION_NOT_OPEN,
getExceptionInterceptor());
} else if (this.transactionsSupported) {
try {
rollbackNoChecks();
} catch (SQLException sqlEx) {
// We ignore non-transactional tables if told to do so
if (getIgnoreNonTxTables() && (sqlEx.getErrorCode() == SQLError.ER_WARNING_NOT_COMPLETE_ROLLBACK)) {
return;
}
throw sqlEx;
}
}
} catch (SQLException sqlException) {
if (SQLError.SQL_STATE_COMMUNICATION_LINK_FAILURE.equals(sqlException.getSQLState())) {
throw SQLError.createSQLException("Communications link failure during rollback(). Transaction resolution unknown.",
SQLError.SQL_STATE_TRANSACTION_RESOLUTION_UNKNOWN, getExceptionInterceptor());
}
throw sqlException;
} finally {
this.needsPing = this.getReconnectAtTxEnd();
}
}
}
/**
* @see Connection#rollback(Savepoint)
*/
public void rollback(final Savepoint savepoint) throws SQLException {
synchronized (getConnectionMutex()) {
if (versionMeetsMinimum(4, 0, 14) || versionMeetsMinimum(4, 1, 1)) {
checkClosed();
try {
if (this.connectionLifecycleInterceptors != null) {
IterateBlock iter = new IterateBlock(this.connectionLifecycleInterceptors.iterator()) {
@Override
void forEach(Extension each) throws SQLException {
if (!((ConnectionLifecycleInterceptor) each).rollback(savepoint)) {
this.stopIterating = true;
}
}
};
iter.doForAll();
if (!iter.fullIteration()) {
return;
}
}
StringBuffer rollbackQuery = new StringBuffer("ROLLBACK TO SAVEPOINT ");
rollbackQuery.append('`');
rollbackQuery.append(savepoint.getSavepointName());
rollbackQuery.append('`');
java.sql.Statement stmt = null;
try {
stmt = getMetadataSafeStatement();
stmt.executeUpdate(rollbackQuery.toString());
} catch (SQLException sqlEx) {
int errno = sqlEx.getErrorCode();
if (errno == 1181) {
String msg = sqlEx.getMessage();
if (msg != null) {
int indexOfError153 = msg.indexOf("153");
if (indexOfError153 != -1) {
throw SQLError.createSQLException("Savepoint '" + savepoint.getSavepointName() + "' does not exist",
SQLError.SQL_STATE_ILLEGAL_ARGUMENT, errno, getExceptionInterceptor());
}
}
}
// We ignore non-transactional tables if told to do so
if (getIgnoreNonTxTables() && (sqlEx.getErrorCode() != SQLError.ER_WARNING_NOT_COMPLETE_ROLLBACK)) {
throw sqlEx;
}
if (SQLError.SQL_STATE_COMMUNICATION_LINK_FAILURE.equals(sqlEx.getSQLState())) {
throw SQLError.createSQLException("Communications link failure during rollback(). Transaction resolution unknown.",
SQLError.SQL_STATE_TRANSACTION_RESOLUTION_UNKNOWN, getExceptionInterceptor());
}
throw sqlEx;
} finally {
closeStatement(stmt);
}
} finally {
this.needsPing = this.getReconnectAtTxEnd();
}
} else {
throw SQLError.notImplemented();
}
}
}
private void rollbackNoChecks() throws SQLException {
if (getUseLocalTransactionState() && versionMeetsMinimum(5, 0, 0)) {
if (!this.io.inTransactionOnServer()) {
return; // effectively a no-op
}
}
execSQL(null, "rollback", -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null, false);
}
/**
* @see java.sql.Connection#prepareStatement(String)
*/
public java.sql.PreparedStatement serverPrepareStatement(String sql) throws SQLException {
String nativeSql = getProcessEscapeCodesForPrepStmts() ? nativeSQL(sql) : sql;
return ServerPreparedStatement.getInstance(getLoadBalanceSafeProxy(), nativeSql, this.getCatalog(), DEFAULT_RESULT_SET_TYPE,
DEFAULT_RESULT_SET_CONCURRENCY);
}
/**
* @see java.sql.Connection#prepareStatement(String, int)
*/
public java.sql.PreparedStatement serverPrepareStatement(String sql, int autoGenKeyIndex) throws SQLException {
String nativeSql = getProcessEscapeCodesForPrepStmts() ? nativeSQL(sql) : sql;
PreparedStatement pStmt = ServerPreparedStatement.getInstance(getLoadBalanceSafeProxy(), nativeSql, this.getCatalog(), DEFAULT_RESULT_SET_TYPE,
DEFAULT_RESULT_SET_CONCURRENCY);
pStmt.setRetrieveGeneratedKeys(autoGenKeyIndex == java.sql.Statement.RETURN_GENERATED_KEYS);
return pStmt;
}
/**
* @see java.sql.Connection#prepareStatement(String, int, int)
*/
public java.sql.PreparedStatement serverPrepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
String nativeSql = getProcessEscapeCodesForPrepStmts() ? nativeSQL(sql) : sql;
return ServerPreparedStatement.getInstance(getLoadBalanceSafeProxy(), nativeSql, this.getCatalog(), resultSetType, resultSetConcurrency);
}
/**
* @see java.sql.Connection#prepareStatement(String, int, int, int)
*/
public java.sql.PreparedStatement serverPrepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
throws SQLException {
if (getPedantic()) {
if (resultSetHoldability != java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT) {
throw SQLError.createSQLException("HOLD_CUSRORS_OVER_COMMIT is only supported holdability level", SQLError.SQL_STATE_ILLEGAL_ARGUMENT,
getExceptionInterceptor());
}
}
return serverPrepareStatement(sql, resultSetType, resultSetConcurrency);
}
/**
* @see java.sql.Connection#prepareStatement(String, int[])
*/
public java.sql.PreparedStatement serverPrepareStatement(String sql, int[] autoGenKeyIndexes) throws SQLException {
PreparedStatement pStmt = (PreparedStatement) serverPrepareStatement(sql);
pStmt.setRetrieveGeneratedKeys((autoGenKeyIndexes != null) && (autoGenKeyIndexes.length > 0));
return pStmt;
}
/**
* @see java.sql.Connection#prepareStatement(String, String[])
*/
public java.sql.PreparedStatement serverPrepareStatement(String sql, String[] autoGenKeyColNames) throws SQLException {
PreparedStatement pStmt = (PreparedStatement) serverPrepareStatement(sql);
pStmt.setRetrieveGeneratedKeys((autoGenKeyColNames != null) && (autoGenKeyColNames.length > 0));
return pStmt;
}
public boolean serverSupportsConvertFn() throws SQLException {
return versionMeetsMinimum(4, 0, 2);
}
/**
* If a connection is in auto-commit mode, than all its SQL statements will
* be executed and committed as individual transactions. Otherwise, its SQL
* statements are grouped into transactions that are terminated by either
* commit() or rollback(). By default, new connections are in auto- commit
* mode. The commit occurs when the statement completes or the next execute
* occurs, whichever comes first. In the case of statements returning a
* ResultSet, the statement completes when the last row of the ResultSet has
* been retrieved or the ResultSet has been closed. In advanced cases, a
* single statement may return multiple results as well as output parameter
* values. Here the commit occurs when all results and output param values
* have been retrieved.
*
* Note: MySQL does not support transactions, so this method is a no-op.
*
*
* @param autoCommitFlag
* -
* true enables auto-commit; false disables it
* @exception SQLException
* if a database access error occurs
*/
public void setAutoCommit(final boolean autoCommitFlag) throws SQLException {
synchronized (getConnectionMutex()) {
checkClosed();
if (this.connectionLifecycleInterceptors != null) {
IterateBlock iter = new IterateBlock(this.connectionLifecycleInterceptors.iterator()) {
@Override
void forEach(Extension each) throws SQLException {
if (!((ConnectionLifecycleInterceptor) each).setAutoCommit(autoCommitFlag)) {
this.stopIterating = true;
}
}
};
iter.doForAll();
if (!iter.fullIteration()) {
return;
}
}
if (getAutoReconnectForPools()) {
setHighAvailability(true);
}
try {
if (this.transactionsSupported) {
boolean needsSetOnServer = true;
if (this.getUseLocalSessionState() && this.autoCommit == autoCommitFlag) {
needsSetOnServer = false;
} else if (!this.getHighAvailability()) {
needsSetOnServer = this.getIO().isSetNeededForAutoCommitMode(autoCommitFlag);
}
// this internal value must be set first as failover depends on it being set to true to fail over (which is done by most app servers and
// connection pools at the end of a transaction), and the driver issues an implicit set based on this value when it (re)-connects to a
// server so the value holds across connections
this.autoCommit = autoCommitFlag;
if (needsSetOnServer) {
execSQL(null, autoCommitFlag ? "SET autocommit=1" : "SET autocommit=0", -1, null, DEFAULT_RESULT_SET_TYPE,
DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null, false);
}
} else {
if ((autoCommitFlag == false) && !getRelaxAutoCommit()) {
throw SQLError.createSQLException("MySQL Versions Older than 3.23.15 do not support transactions",
SQLError.SQL_STATE_CONNECTION_NOT_OPEN, getExceptionInterceptor());
}
this.autoCommit = autoCommitFlag;
}
} finally {
if (this.getAutoReconnectForPools()) {
setHighAvailability(false);
}
}
return;
}
}
/**
* A sub-space of this Connection's database may be selected by setting a
* catalog name. If the driver does not support catalogs, it will silently
* ignore this request
*
* Note: MySQL's notion of catalogs are individual databases.
*
*
* @param catalog
* the database for this connection to use
* @throws SQLException
* if a database access error occurs
*/
public void setCatalog(final String catalog) throws SQLException {
synchronized (getConnectionMutex()) {
checkClosed();
if (catalog == null) {
throw SQLError.createSQLException("Catalog can not be null", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor());
}
if (this.connectionLifecycleInterceptors != null) {
IterateBlock iter = new IterateBlock(this.connectionLifecycleInterceptors.iterator()) {
@Override
void forEach(Extension each) throws SQLException {
if (!((ConnectionLifecycleInterceptor) each).setCatalog(catalog)) {
this.stopIterating = true;
}
}
};
iter.doForAll();
if (!iter.fullIteration()) {
return;
}
}
if (getUseLocalSessionState()) {
if (this.lowerCaseTableNames) {
if (this.database.equalsIgnoreCase(catalog)) {
return;
}
} else {
if (this.database.equals(catalog)) {
return;
}
}
}
String quotedId = this.dbmd.getIdentifierQuoteString();
if ((quotedId == null) || quotedId.equals(" ")) {
quotedId = "";
}
StringBuffer query = new StringBuffer("USE ");
query.append(quotedId);
query.append(catalog);
query.append(quotedId);
execSQL(null, query.toString(), -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null, false);
this.database = catalog;
}
}
/**
* @param failedOver
* The failedOver to set.
*/
public void setFailedOver(boolean flag) {
synchronized (getConnectionMutex()) {
// handled higher up
}
}
/**
* @see Connection#setHoldability(int)
*/
public void setHoldability(int arg0) throws SQLException {
// do nothing
}
public void setInGlobalTx(boolean flag) {
this.isInGlobalTx = flag;
}
// exposed for testing
/**
* @param preferSlaveDuringFailover
* The preferSlaveDuringFailover to set.
*/
public void setPreferSlaveDuringFailover(boolean flag) {
// no-op, handled further up in the wrapper
}
public void setReadInfoMsgEnabled(boolean flag) {
this.readInfoMsg = flag;
}
/**
* You can put a connection in read-only mode as a hint to enable database
* optimizations Note: setReadOnly cannot be called while in the
* middle of a transaction
*
* @param readOnlyFlag
* -
* true enables read-only mode; false disables it
* @exception SQLException
* if a database access error occurs
*/
public void setReadOnly(boolean readOnlyFlag) throws SQLException {
checkClosed();
setReadOnlyInternal(readOnlyFlag);
}
public void setReadOnlyInternal(boolean readOnlyFlag) throws SQLException {
// note this this is safe even inside a transaction
if (versionMeetsMinimum(5, 6, 5)) {
if (!getUseLocalSessionState() || (readOnlyFlag != this.readOnly)) {
execSQL(null, "set session transaction " + (readOnlyFlag ? "read only" : "read write"), -1, null, DEFAULT_RESULT_SET_TYPE,
DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null, false);
}
}
this.readOnly = readOnlyFlag;
}
/**
* @see Connection#setSavepoint()
*/
public java.sql.Savepoint setSavepoint() throws SQLException {
MysqlSavepoint savepoint = new MysqlSavepoint(getExceptionInterceptor());
setSavepoint(savepoint);
return savepoint;
}
private void setSavepoint(MysqlSavepoint savepoint) throws SQLException {
synchronized (getConnectionMutex()) {
if (versionMeetsMinimum(4, 0, 14) || versionMeetsMinimum(4, 1, 1)) {
checkClosed();
StringBuffer savePointQuery = new StringBuffer("SAVEPOINT ");
savePointQuery.append('`');
savePointQuery.append(savepoint.getSavepointName());
savePointQuery.append('`');
java.sql.Statement stmt = null;
try {
stmt = getMetadataSafeStatement();
stmt.executeUpdate(savePointQuery.toString());
} finally {
closeStatement(stmt);
}
} else {
throw SQLError.notImplemented();
}
}
}
/**
* @see Connection#setSavepoint(String)
*/
public java.sql.Savepoint setSavepoint(String name) throws SQLException {
synchronized (getConnectionMutex()) {
MysqlSavepoint savepoint = new MysqlSavepoint(name, getExceptionInterceptor());
setSavepoint(savepoint);
return savepoint;
}
}
private void setSessionVariables() throws SQLException {
if (this.versionMeetsMinimum(4, 0, 0) && getSessionVariables() != null) {
List variablesToSet = StringUtils.split(getSessionVariables(), ",", "\"'", "\"'", false);
int numVariablesToSet = variablesToSet.size();
java.sql.Statement stmt = null;
try {
stmt = getMetadataSafeStatement();
for (int i = 0; i < numVariablesToSet; i++) {
String variableValuePair = variablesToSet.get(i);
if (variableValuePair.startsWith("@")) {
stmt.executeUpdate("SET " + variableValuePair);
} else {
stmt.executeUpdate("SET SESSION " + variableValuePair);
}
}
} finally {
if (stmt != null) {
stmt.close();
}
}
}
}
/**
* @param level
* @throws SQLException
*/
public void setTransactionIsolation(int level) throws SQLException {
synchronized (getConnectionMutex()) {
checkClosed();
if (this.hasIsolationLevels) {
String sql = null;
boolean shouldSendSet = false;
if (getAlwaysSendSetIsolation()) {
shouldSendSet = true;
} else {
if (level != this.isolationLevel) {
shouldSendSet = true;
}
}
if (getUseLocalSessionState()) {
shouldSendSet = this.isolationLevel != level;
}
if (shouldSendSet) {
switch (level) {
case java.sql.Connection.TRANSACTION_NONE:
throw SQLError.createSQLException("Transaction isolation level NONE not supported by MySQL", getExceptionInterceptor());
case java.sql.Connection.TRANSACTION_READ_COMMITTED:
sql = "SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED";
break;
case java.sql.Connection.TRANSACTION_READ_UNCOMMITTED:
sql = "SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED";
break;
case java.sql.Connection.TRANSACTION_REPEATABLE_READ:
sql = "SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ";
break;
case java.sql.Connection.TRANSACTION_SERIALIZABLE:
sql = "SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE";
break;
default:
throw SQLError.createSQLException("Unsupported transaction isolation level '" + level + "'", SQLError.SQL_STATE_DRIVER_NOT_CAPABLE,
getExceptionInterceptor());
}
execSQL(null, sql, -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null, false);
this.isolationLevel = level;
}
} else {
throw SQLError.createSQLException("Transaction Isolation Levels are not supported on MySQL versions older than 3.23.36.",
SQLError.SQL_STATE_DRIVER_NOT_CAPABLE, getExceptionInterceptor());
}
}
}
/**
* JDBC 2.0 Install a type-map object as the default type-map for this
* connection
*
* @param map
* the type mapping
* @throws SQLException
* if a database error occurs.
*/
public void setTypeMap(java.util.Map> map) throws SQLException {
synchronized (getConnectionMutex()) {
this.typeMap = map;
}
}
private void setupServerForTruncationChecks() throws SQLException {
if (getJdbcCompliantTruncation()) {
if (versionMeetsMinimum(5, 0, 2)) {
String currentSqlMode = this.serverVariables.get("sql_mode");
boolean strictTransTablesIsSet = StringUtils.indexOfIgnoreCase(currentSqlMode, "STRICT_TRANS_TABLES") != -1;
if (currentSqlMode == null || currentSqlMode.length() == 0 || !strictTransTablesIsSet) {
StringBuffer commandBuf = new StringBuffer("SET sql_mode='");
if (currentSqlMode != null && currentSqlMode.length() > 0) {
commandBuf.append(currentSqlMode);
commandBuf.append(",");
}
commandBuf.append("STRICT_TRANS_TABLES'");
execSQL(null, commandBuf.toString(), -1, null, DEFAULT_RESULT_SET_TYPE, DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null, false);
setJdbcCompliantTruncation(false); // server's handling this for us now
} else if (strictTransTablesIsSet) {
// We didn't set it, but someone did, so we piggy back on it
setJdbcCompliantTruncation(false); // server's handling this for us now
}
}
}
}
/**
* Used by MiniAdmin to shutdown a MySQL server
*
* @throws SQLException
* if the command can not be issued.
*/
public void shutdownServer() throws SQLException {
try {
this.io.sendCommand(MysqlDefs.SHUTDOWN, null, null, false, null, 0);
} catch (Exception ex) {
SQLException sqlEx = SQLError.createSQLException(Messages.getString("Connection.UnhandledExceptionDuringShutdown"),
SQLError.SQL_STATE_GENERAL_ERROR, getExceptionInterceptor());
sqlEx.initCause(ex);
throw sqlEx;
}
}
public boolean supportsIsolationLevel() {
return this.hasIsolationLevels;
}
public boolean supportsQuotedIdentifiers() {
return this.hasQuotedIdentifiers;
}
public boolean supportsTransactions() {
return this.transactionsSupported;
}
/**
* Remove the given statement from the list of open statements
*
* @param stmt
* the Statement instance to remove
*/
public void unregisterStatement(Statement stmt) {
if (this.openStatements != null) {
synchronized (this.openStatements) {
this.openStatements.remove(stmt);
}
}
}
public boolean useAnsiQuotedIdentifiers() {
synchronized (getConnectionMutex()) {
return this.useAnsiQuotes;
}
}
public boolean versionMeetsMinimum(int major, int minor, int subminor) throws SQLException {
checkClosed();
return this.io.versionMeetsMinimum(major, minor, subminor);
}
/**
* Returns cached metadata (or null if not cached) for the given query,
* which must match _exactly_.
*
* This method is synchronized by the caller on getMutex(), so if
* calling this method from internal code in the driver, make sure it's
* synchronized on the mutex that guards communication with the server.
*
* @param sql
* the query that is the key to the cache
*
* @return metadata cached for the given SQL, or none if it doesn't
* exist.
*/
public CachedResultSetMetaData getCachedMetaData(String sql) {
if (this.resultSetMetadataCache != null) {
synchronized (this.resultSetMetadataCache) {
return (CachedResultSetMetaData) this.resultSetMetadataCache.get(sql);
}
}
return null; // no cache exists
}
/**
* Caches CachedResultSetMetaData that has been placed in the cache using
* the given SQL as a key.
*
* This method is synchronized by the caller on getMutex(), so if
* calling this method from internal code in the driver, make sure it's
* synchronized on the mutex that guards communication with the server.
*
* @param sql
* the query that the metadata pertains too.
* @param cachedMetaData
* metadata (if it exists) to populate the cache.
* @param resultSet
* the result set to retreive metadata from, or apply to.
*
* @throws SQLException
*/
public void initializeResultsMetadataFromCache(String sql, CachedResultSetMetaData cachedMetaData, ResultSetInternalMethods resultSet) throws SQLException {
if (cachedMetaData == null) {
// read from results
cachedMetaData = new CachedResultSetMetaData();
// assume that users will use named-based lookups
resultSet.buildIndexMapping();
resultSet.initializeWithMetadata();
if (resultSet instanceof UpdatableResultSet) {
((UpdatableResultSet) resultSet).checkUpdatability();
}
resultSet.populateCachedMetaData(cachedMetaData);
this.resultSetMetadataCache.put(sql, cachedMetaData);
} else {
resultSet.initializeFromCachedMetaData(cachedMetaData);
resultSet.initializeWithMetadata();
if (resultSet instanceof UpdatableResultSet) {
((UpdatableResultSet) resultSet).checkUpdatability();
}
}
}
/**
* Returns the comment that will be prepended to all statements
* sent to the server.
*
* @return the comment that will be prepended to all statements
* sent to the server.
*/
public String getStatementComment() {
return this.statementComment;
}
/**
* Sets the comment that will be prepended to all statements
* sent to the server. Do not use slash-star or star-slash tokens
* in the comment as these will be added by the driver itself.
*
* @param comment
* the comment that will be prepended to all statements
* sent to the server.
*/
public void setStatementComment(String comment) {
this.statementComment = comment;
}
public void reportQueryTime(long millisOrNanos) {
synchronized (getConnectionMutex()) {
this.queryTimeCount++;
this.queryTimeSum += millisOrNanos;
this.queryTimeSumSquares += (millisOrNanos * millisOrNanos);
this.queryTimeMean = ((this.queryTimeMean * (this.queryTimeCount - 1)) + millisOrNanos) / this.queryTimeCount;
}
}
public boolean isAbonormallyLongQuery(long millisOrNanos) {
synchronized (getConnectionMutex()) {
if (this.queryTimeCount < 15) {
return false; // need a minimum amount for this to make sense
}
double stddev = Math.sqrt((this.queryTimeSumSquares - ((this.queryTimeSum * this.queryTimeSum) / this.queryTimeCount)) / (this.queryTimeCount - 1));
return millisOrNanos > (this.queryTimeMean + 5 * stddev);
}
}
public void initializeExtension(Extension ex) throws SQLException {
ex.init(this, this.props);
}
public void transactionBegun() throws SQLException {
synchronized (getConnectionMutex()) {
if (this.connectionLifecycleInterceptors != null) {
IterateBlock iter = new IterateBlock(this.connectionLifecycleInterceptors.iterator()) {
@Override
void forEach(Extension each) throws SQLException {
((ConnectionLifecycleInterceptor) each).transactionBegun();
}
};
iter.doForAll();
}
}
}
public void transactionCompleted() throws SQLException {
synchronized (getConnectionMutex()) {
if (this.connectionLifecycleInterceptors != null) {
IterateBlock iter = new IterateBlock(this.connectionLifecycleInterceptors.iterator()) {
@Override
void forEach(Extension each) throws SQLException {
((ConnectionLifecycleInterceptor) each).transactionCompleted();
}
};
iter.doForAll();
}
}
}
public boolean storesLowerCaseTableName() {
return this.storesLowerCaseTableName;
}
private ExceptionInterceptor exceptionInterceptor;
@Override
public ExceptionInterceptor getExceptionInterceptor() {
return this.exceptionInterceptor;
}
public boolean getRequiresEscapingEncoder() {
return this.requiresEscapingEncoder;
}
public boolean isServerLocal() throws SQLException {
synchronized (getConnectionMutex()) {
SocketFactory factory = getIO().socketFactory;
if (factory instanceof SocketMetadata) {
return ((SocketMetadata) factory).isLocallyConnected(this);
}
getLog().logWarn(Messages.getString("Connection.NoMetadataOnSocketFactory"));
return false;
}
}
/**
* Returns the sql select limit max-rows for this session.
*/
public int getSessionMaxRows() {
synchronized (getConnectionMutex()) {
return this.sessionMaxRows;
}
}
/**
* Sets the sql select limit max-rows for this session if different from current.
*
* @param max
* the new max-rows value to set.
* @throws SQLException
* if a database error occurs issuing the statement that sets the limit.
*/
public void setSessionMaxRows(int max) throws SQLException {
synchronized (getConnectionMutex()) {
if (this.sessionMaxRows != max) {
this.sessionMaxRows = max;
execSQL(null, "SET SQL_SELECT_LIMIT=" + (this.sessionMaxRows == -1 ? "DEFAULT" : this.sessionMaxRows), -1, null, DEFAULT_RESULT_SET_TYPE,
DEFAULT_RESULT_SET_CONCURRENCY, false, this.database, null, false);
}
}
}
// JDBC-4.1
// until we flip catalog/schema, this is a no-op
public void setSchema(String schema) throws SQLException {
synchronized (getConnectionMutex()) {
checkClosed();
}
}
// JDBC-4.1
public String getSchema() throws SQLException {
synchronized (getConnectionMutex()) {
checkClosed();
return null;
}
}
/**
* Terminates an open connection. Calling abort results in:
*
* - The connection marked as closed
*
- Closes any physical connection to the database
*
- Releases resources used by the connection
*
- Insures that any thread that is currently accessing the connection will either progress to completion or throw an
SQLException.
*
*
* Calling abort marks the connection closed and releases any resources. Calling abort on a closed connection is a no-op.
*
* It is possible that the aborting and releasing of the resources that are held by the connection can take an extended period of time. When the
* abort method returns, the connection will have been marked as closed and the Executor that was passed as a parameter to abort
* may still be executing tasks to release resources.
*
* This method checks to see that there is an SQLPermission object before allowing the method to proceed. If a SecurityManager
* exists and its checkPermission method denies calling abort, this method throws a java.lang.SecurityException.
*
* @param executor
* The Executor implementation which will
* be used by abort.
* @throws java.sql.SQLException
* if a database access error occurs or
* the {@code executor} is {@code null},
* @throws java.lang.SecurityException
* if a security manager exists and its checkPermission method denies calling abort
* @see SecurityManager#checkPermission
* @see Executor
* @since 1.7
*/
public void abort(Executor executor) throws SQLException {
SecurityManager sec = System.getSecurityManager();
if (sec != null) {
sec.checkPermission(ABORT_PERM);
}
if (executor == null) {
throw SQLError.createSQLException("Executor can not be null", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor());
}
executor.execute(new Runnable() {
public void run() {
try {
abortInternal();
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
});
}
// JDBC-4.1
public void setNetworkTimeout(Executor executor, final int milliseconds) throws SQLException {
synchronized (getConnectionMutex()) {
SecurityManager sec = System.getSecurityManager();
if (sec != null) {
sec.checkPermission(SET_NETWORK_TIMEOUT_PERM);
}
if (executor == null) {
throw SQLError.createSQLException("Executor can not be null", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor());
}
checkClosed();
final MysqlIO mysqlIo = this.io;
executor.execute(new Runnable() {
public void run() {
try {
setSocketTimeout(milliseconds); // for re-connects
mysqlIo.setSocketTimeout(milliseconds);
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
});
}
}
// JDBC-4.1
public int getNetworkTimeout() throws SQLException {
synchronized (getConnectionMutex()) {
checkClosed();
return getSocketTimeout();
}
}
public ProfilerEventHandler getProfilerEventHandlerInstance() {
return this.eventSink;
}
public void setProfilerEventHandlerInstance(ProfilerEventHandler h) {
this.eventSink = h;
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy