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/*
Derby - Class com.pivotal.gemfirexd.internal.client.am.Statement
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
* Changes for GemFireXD distributed data platform (some marked by "GemStone changes")
*
* Portions Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you
* may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License. See accompanying
* LICENSE file.
*/
package com.pivotal.gemfirexd.internal.client.am;
import java.sql.SQLException;
import java.util.Arrays;
import java.util.Properties;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.gemstone.gemfire.internal.shared.ClientSharedUtils;
import com.pivotal.gemfirexd.internal.client.am.Connection.FailoverStatus;
import com.pivotal.gemfirexd.internal.client.net.NetConnection;
import com.pivotal.gemfirexd.internal.shared.common.reference.SQLState;
import com.pivotal.gemfirexd.internal.shared.common.sanity.SanityManager;
import com.pivotal.gemfirexd.jdbc.ClientAttribute;
// GemStone changes BEGIN
// made abstract to enable compilation with both JDK 1.4 and 1.6
abstract
// GemStone changes END
public class Statement implements java.sql.Statement, StatementCallbackInterface{
// JDBC 3 constant indicating that the current ResultSet object
// should be closed when calling getMoreResults.
// Constant value matches that defined by JDBC 3 java.sql.Statement.CLOSE_CURRENT_RESULT
public final static int CLOSE_CURRENT_RESULT = 1;
// JDBC 3 constant indicating that the current ResultSet object
// should not be closed when calling getMoreResults.
// Constant value matches that defined by JDBC 3 java.sql.Statement.KEEP_CURRENT_RESULT
public final static int KEEP_CURRENT_RESULT = 2;
// JDBC 3 constant indicating that all ResultSet objects that
// have previously been kept open should be closed when calling getMoreResults.
// Constant value matches that defined by JDBC 3 java.sql.Statement.CLOSE_ALL_RESULTS
public final static int CLOSE_ALL_RESULTS = 3;
//---------------------navigational members-----------------------------------
public MaterialStatement materialStatement_ = null;
Connection connection_;
public Section section_;
Agent agent_;
/** The owner of this statement, if any. */
private java.sql.Statement owner = null;
ResultSet resultSet_;
// Use -1, if there is no update count returned, ie. when result set is returned. 0 is a valid update count for DDL.
int updateCount_ = -1;
int returnValueFromProcedure_;
// Enumeration of the flavors of statement execute call used.
static final int executeQueryMethod__ = 1;
static final int executeUpdateMethod__ = 2;
static final int executeMethod__ = 3;
// sqlMode_ will be moved to PS as soon as we remove the hack reference in completeExecute()
// Enumerated in Statement: S.sqlIsQuery__, S.sqlIsCall__, S.sqlIsUpdate__
// Determines whether sql_ starts with SELECT/VALUES, CALL, or other (assumed to be an update).
public int sqlMode_ = 0;
// Enum for sqlMode_:
public static final int isQuery__ = 0x1; // sql starts with SELECT.... or VALUES...
static final int isCall__ = 0x2; // sql starts with CALL ...
static final int isUpdate__ = 0x4; // All other sql is categorized as a update DML or DDL.
// sqlUpdateMode_ is only set when the sqlMode_ == isUpdate__
int sqlUpdateMode_ = 0;
// Enum for sqlUpdateMode_:
public final static int isCommitSql__ = 0x1;
public final static int isRollbackSql__ = 0x2;
final static int isPositionedUpdateDeleteSql__ = 0x10;
final static int isInsertSql__ = 0x20; // used to recognize "insert" for auto-generated keys
final static int isDeleteSql__ = 0x40; // used to recognize "delete" for parsing cursorname
final static int isUpdateSql__ = 0x80; // used to recognize "update" for parsing cursorname
ColumnMetaData resultSetMetaData_; // type information for output sqlda
// these two are used during parsing of literals for call statement.
// please add a comment desribing what why you can't reuse inputs_ and parameterMetaData_
// members for the literal inputs
// Caching the Cursor object for reuse.
public Cursor cachedCursor_ = null;
public Cursor cachedSingletonRowData_ = null;
// GemStone changes BEGIN
protected final static String SET_SCHEMA_STATEMENT =
"SET CONNECTION_SCHEMA ";
public
// GemStone changes END
boolean isPreparedStatement_ = false;
//---------------------navigational cheat-links-------------------------------
// Cheat-links are for convenience only, and are not part of the conceptual model.
// Warning:
// Cheat-links should only be defined for invariant state data.
// That is, state data that is set by the constructor and never changes.
//-----------------------------state------------------------------------------
// Jdbc 1 positioned updates are implemented via
// sql scan for "...where current of ",
// the addition of mappings from cursor names to query sections,
// and the subtitution of with in the pass-thru sql string
// "...where current of " when user-defined cursor names are used.
// Both "canned" cursor names (from our jdbc package set) and user-defined cursor names are mapped.
// Statement.cursorName_ is initialized to null until the cursor name is requested or set.
// s.setCursorName()) adds a user-defined name, but it is not
// added to the cursor map until execution time (DERBY-1036);
// When requested (rs.getCursorName()), if the cursor name is still null,
// then is given the canned cursor name as defined by our jdbc package set.
// Still need to consider how positioned updates should interact with multiple result sets from a stored.
String cursorName_ = null;
// This means the client-side jdbc statement object is open.
// This value is set to true when the statement object is constructed, and will not change
// until statement.close() is called either directly or via connection.close(), finalizer, or other methods.
boolean openOnClient_ = true;
// This means a DERBY server-side section for this statement is in the prepared state.
// A client-side jdbc statement may remain open across commits (openOnClient=true),
// but the server-side DERBY section moves to an unprepared state (openOnServer=false) across commits,
// requiring an implicit re-prepare "under the covers" by the driver.
// Unprepared jdbc query statements still have prepared sections on the server.
// This openOnServer_ only has implications for preparedstatement
boolean openOnServer_ = false;
//private int indexOfCurrentResultSet_ = -1;
protected int indexOfCurrentResultSet_ = -1;
ResultSet[] resultSetList_ = null; // array of ResultSet objects
protected final static String TIMEOUT_STATEMENT = "SET STATEMENT_TIMEOUT ";
// GemStone changes BEGIN
protected final java.util.ArrayList specialRegisterArrayList =
new java.util.ArrayList(1);
/* (original code)
protected java.util.ArrayList timeoutArrayList = new java.util.ArrayList(1);
*/
// GemStone changes END
protected boolean doWriteTimeout = false;
int timeout_ = 0; // for query timeout in seconds
int maxRows_ = 0;
int maxFieldSize_ = 0; // zero means that there is no limit to the size of a column.
// When this is false we skip autocommit for this PreparedStatement.
// This is needed when the PreparedStatement object is used internally by
// the driver and a commit is not desired, e.g., Blob/Clob API calls
boolean isAutoCommittableStatement_ = true;
// The user has no control over the statement that owns a catalog query, and has no ability to close that statement.
// We need a special member variable on our internal catalog query statements so that
// when the catalog query is closed, the result set will know to close it's owning statement.
boolean isCatalogQuery_ = false;
// This collection is used for two different purposes:
// For statement batching it contains the batched SQL strings.
// For prepared statement batching it contains the batched input rows.
final java.util.ArrayList batch_ = new java.util.ArrayList();
// Scrollable cursor attributes
public int resultSetType_ = java.sql.ResultSet.TYPE_FORWARD_ONLY;
public int resultSetConcurrency_ = java.sql.ResultSet.CONCUR_READ_ONLY;
public int resultSetHoldability_;
// This is ignored by the driver if this is zero.
// For the net forward-only result set, if fetchSize is unset, we let the server return however many rows will fit in a query block.
// For the net scrollable result set, then we use a default of 64 rows.
public int fetchSize_ = 0;
public int fetchDirection_ = java.sql.ResultSet.FETCH_FORWARD;
// Conceptually this doesn't belong in Statement, but belongs in PreparedStatement,
// since Statement doesn't know about params, so we're just putting it here perhaps temporarily,
// Used for callable statement OUT paramters.
public Cursor singletonRowData_ = null;
// number of invisible result sets returned from a stored procedure.
public int numInvisibleRS_ = 0;
// This is a cache of the attributes to be sent on prepare.
// Think about caching the entire prepare DDM string for the re-prepares
public String cursorAttributesToSendOnPrepare_ = null;
// The following members are for the exclusive use of prepared statements that require auto-generated keys to be returned
public PreparedStatement preparedStatementForAutoGeneratedKeys_;
public ResultSet generatedKeysResultSet_;
public String[] generatedKeysColumnNames_;
public int[] generatedKeysColumnIndexes_;
public int autoGeneratedKeys_ = java.sql.Statement.NO_GENERATED_KEYS;
// This flag makes sure that only one copy of this statement
// will be in connection_.commitListeners_.
private SqlWarning warnings_ = null;
// A Statement is NOT poolable by default. The constructor for
// PreparedStatement overrides this.
protected boolean isPoolable = false;
// GemStone changes BEGIN
protected String statementUUID;
// GemStone changes END
//---------------------constructors/finalizer/accessors--------------------
private Statement() {
initStatement();
}
private void resetStatement() {
initStatement();
}
private void initStatement() {
materialStatement_ = null;
connection_ = null;
agent_ = null;
resultSetType_ = java.sql.ResultSet.TYPE_FORWARD_ONLY;
resultSetConcurrency_ = java.sql.ResultSet.CONCUR_READ_ONLY;
resultSetHoldability_ = 0;
cursorAttributesToSendOnPrepare_ = null;
if (specialRegisterArrayList.size() == 0) {
specialRegisterArrayList.add(null); // Make sure the list's length is 1
}
// GemStone changes BEGIN
initResetStatement(true);
// GemStone changes END
}
private void initResetStatement(boolean completeReset) {
initResetPreparedStatement(completeReset);
//section_ = null; // don't set section to null because write piggyback command require a section
if (section_ != null) {
section_.free();
}
if (setSpecialRegisterSection_ != null) {
setSpecialRegisterSection_.free();
setSpecialRegisterSection_ = null;
}
sqlMode_ = 0;
sqlUpdateMode_ = 0;
resultSetMetaData_ = null;
statementUUID = null;
}
protected void initResetPreparedStatement(boolean completeReset) {
warnings_ = null;
//section_ = null;
resultSet_ = null;
updateCount_ = -1;
returnValueFromProcedure_ = 0;
openOnClient_ = true;
openOnServer_ = false;
indexOfCurrentResultSet_ = -1;
resultSetList_ = null;
isCatalogQuery_ = false;
isAutoCommittableStatement_ = true;
// GemStone changes BEGIN
// batch_.clear();
// GemStone changes END
singletonRowData_ = null;
numInvisibleRS_ = 0;
preparedStatementForAutoGeneratedKeys_ = null;
generatedKeysResultSet_ = null;
generatedKeysColumnNames_ = null;
generatedKeysColumnIndexes_ = null;
autoGeneratedKeys_ = java.sql.Statement.NO_GENERATED_KEYS;
// GemStone changes BEGIN
if (SanityManager.TraceSingleHop) {
SanityManager.DEBUG_PRINT(SanityManager.TRACE_SINGLE_HOP,
"initResetPreparedStatement called with completeReset=" + completeReset/*, new Throwable()*/);
}
if (completeReset) {
resetUserControllableAttributes();
batch_.clear();
}
// GemStone changes END
}
/**
* Resets attributes that can be modified by the user through the
* {@link java.sql.Statement} interface to default values.
*/
private void resetUserControllableAttributes() {
cursorName_ = null; // setCursorName
timeout_ = 0; // setQueryTimeout
doWriteTimeout = false; // setQueryTimeout
maxRows_ = 0; // setMaxRows
maxFieldSize_ = 0; // setMaxFieldSize
fetchSize_ = 0; // setFetchSize
fetchDirection_ = java.sql.ResultSet.FETCH_FORWARD; // setFetchDirection
isPoolable = isPreparedStatement_;
// Calls to setEscapeProcessing is currently a noop, nothing to reset.
}
// If a dataSource is passed into resetClientConnection(), then we will assume
// properties on the dataSource may have changed, and we will need to go through
// the open-statement list on the connection and do a full reset on all statements,
// including preparedStatement's and callableStatement's. This is because property
// change may influence the section we allocate for the preparedStatement, and
// also the cursor attributes, i.e. setCursorSensitivity().
// If no dataSource is passed into resetClientConnection(), then we will do the
// minimum reset required for preparedStatement's and callableStatement's.
public void reset(boolean fullReset) throws SqlException {
if (fullReset) {
connection_.resetStatement(this);
} else {
initResetStatement(false);
materialStatement_.reset_();
}
}
/**
* Resets the statement for reuse in a statement pool.
*
* Intended to be used only by prepared or callable statements, as
* {@link java.sql.Statement} objects aren't pooled.
*
* The following actions are taken:
*
- Batches are cleared.
* - Warnings are cleared.
* - Open result set are closed on the client and the server.
* - Cached cursor names are cleared.
* - Statement for fetching auto-generated keys is closed.
* - Special registers are reset.
* - User controllable attributes are reset to defaults, for instance
* query timeout and max rows to fetch.
*
*
* @throws SqlException if resetting the statement fails
*/
void resetForReuse()
throws SqlException {
statementUUID = null;
this.batch_.clear();
clearWarningsX();
// Close open resultsets.
// Regardless of whether or not this statement is in the prepared state,
// we need to close any open cursors for this statement on the server.
int numberOfResultSetsToClose = 0;
if (resultSetList_ != null) {
numberOfResultSetsToClose = resultSetList_.length;
}
try {
if (willTickleServer(
numberOfResultSetsToClose, connection_.autoCommit_)) {
flowClose();
} else {
flowCloseOutsideUOW();
}
} finally {
// If an exception is thrown above, the statement should not be put
// back into the statement pool, as the state may not be consistent.
markResultSetsClosed();
// In case a cursorName was set on the Statement but the Statement
// was never used to execute a query, the cursorName will not be
// remove when the resultSets are mark closed, so we need to remove
// the cursorName from the cache.
removeClientCursorNameFromCache();
markPreparedStatementForAutoGeneratedKeysClosed();
if (setSpecialRegisterSection_ != null) {
setSpecialRegisterSection_.free();
setSpecialRegisterSection_ = null;
}
resetUserControllableAttributes();
}
}
public Statement(Agent agent, Connection connection) throws SqlException {
this();
initStatement(agent, connection);
}
public void resetStatement(Agent agent, Connection connection) throws SqlException {
resetStatement();
initStatement(agent, connection);
}
private void initStatement(Agent agent, Connection connection) {
agent_ = agent;
connection_ = connection;
}
// For jdbc 2 statements with scroll attributes
public Statement(Agent agent, Connection connection, int type, int concurrency, int holdability,
int autoGeneratedKeys, String[] columnNames, int[] columnIndexes) throws SqlException {
this(agent, connection);
initStatement(type, concurrency, holdability, autoGeneratedKeys, columnNames,
columnIndexes);
}
public void resetStatement(Agent agent, Connection connection, int type, int concurrency, int holdability,
int autoGeneratedKeys, String[] columnNames, int[] columnIndexes) throws SqlException {
resetStatement(agent, connection);
initStatement(type, concurrency, holdability, autoGeneratedKeys, columnNames, columnIndexes);
}
private void initStatement(int type, int concurrency, int holdability,
int autoGeneratedKeys, String[] columnNames,
int[] columnIndexes) throws SqlException {
switch (type) {
case java.sql.ResultSet.TYPE_FORWARD_ONLY:
case java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE:
case java.sql.ResultSet.TYPE_SCROLL_SENSITIVE:
resultSetType_ = type;
break;
default:
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_API_PARAMETER),
new Integer(type), "type", "createStatement()");
}
switch (concurrency) {
case java.sql.ResultSet.CONCUR_READ_ONLY:
case java.sql.ResultSet.CONCUR_UPDATABLE:
resultSetConcurrency_ = concurrency;
break;
default:
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_API_PARAMETER),
new Integer(concurrency), "concurrency",
"createStatement()");
}
switch (holdability) {
case ResultSet.CLOSE_CURSORS_AT_COMMIT:
case ResultSet.HOLD_CURSORS_OVER_COMMIT:
resultSetHoldability_ = holdability;
break;
default:
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_API_PARAMETER),
new Integer(holdability), "holdability",
"createStatement()");
}
switch (autoGeneratedKeys) {
case java.sql.Statement.NO_GENERATED_KEYS:
case java.sql.Statement.RETURN_GENERATED_KEYS:
autoGeneratedKeys_ = autoGeneratedKeys;
break;
default:
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_API_PARAMETER),
new Integer(autoGeneratedKeys),
"autoGeneratedKeys", "createStatement");
}
// GemStone changes BEGIN
// throw server side equivalent statement creation time
// unsupported exception.
if (resultSetType_ == java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE
&& resultSetConcurrency_ == java.sql.ResultSet.CONCUR_UPDATABLE) {
// if this is supported, disable exception throw in
// com.pivotal.gemfirexd.internal.client.am.Statement#initStatement as
// well.
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.UPDATABLE_SCROLL_INSENSITIVE_NOT_SUPPORTED));
}
// GemStone changes END
generatedKeysColumnNames_ = columnNames;
generatedKeysColumnIndexes_ = columnIndexes;
}
/* (non-Javadoc)
* @see java.lang.Object#finalize()
*
* This method cleans up client-side resources by calling markClosed().
* It is different from close() method, which also does clean up on server.
* Changes done as part of DERBY-210.
*/
protected void finalize() throws java.lang.Throwable {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "finalize");
}
if (openOnClient_) {
markClosed();
}
super.finalize();
}
/*
* Accessor to state variable warnings_
*/
protected SqlWarning getSqlWarnings() {
return warnings_;
}
// ---------------------------jdbc 1------------------------------------------
public java.sql.ResultSet executeQuery(String sql) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "executeQuery", sql);
}
ResultSet resultSet = executeQueryX(sql);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "executeQuery", resultSet);
}
return resultSet;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
private ResultSet executeQueryX(String sql) throws SqlException {
flowExecute(executeQueryMethod__, sql);
return resultSet_;
}
public int executeUpdate(String sql) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "executeUpdate", sql);
}
int updateValue = executeUpdateX(sql);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "executeUpdate", updateValue);
}
return updateValue;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
private int executeUpdateX(String sql) throws SqlException {
flowExecute(executeUpdateMethod__, sql);
return updateCount_;
}
/**
* Returns false unless iface is implemented
*
* @param iface a Class defining an interface.
* @return true if this implements the interface or
* directly or indirectly wraps an object
* that does.
* @throws java.sql.SQLException if an error occurs while determining
* whether this is a wrapper for an object
* with the given interface.
*/
public boolean isWrapperFor(Class iface) throws SQLException {
try {
checkForClosedStatement();
} catch (SqlException se) {
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
return iface.isInstance(this);
}
/**
* Tell whether the statement has been closed or not.
*
* @return true if closed, false otherwise.
* @exception SQLException if a database access error occurs (according to
* spec). Never thrown by this implementation.
*/
public boolean isClosed()
throws SQLException {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "isClosed", !openOnClient_);
}
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "isClosed", !openOnClient_);
}
return !openOnClient_;
}
public boolean isClosedNoThrow() {
return !openOnClient_;
}
// The server holds statement resources until transaction end.
public void close() throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "close");
}
closeX();
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
/**
* An untraced version of close. This method cleans up
* client-side resources and also sends commands to network server to
* perform clean up. This should not be called in the finalizer.
* Difference between finalize and close is
* that close method does these things additionally (Changes done as
* part of DERBY-210):
* 1) Sends commands to the server to close the result sets.
* 2) Sends commands to the server to close the result sets of the
* generated keys query.
* 3) Sends a commit if autocommit is on and it is appropriate.
* 4) Explicitly removes the statement from connection_.openStatements_
* and CommitAndRollbackListeners_ by passing true to markClosed.
*
* We may need to do 1) in finalizer too. This is being tracked in
* DERBY-1021
*
* @throws SqlException
*/
public void closeX() throws SqlException {
if (!openOnClient_) {
return;
}
// GemStone changes BEGIN
// disable disconnect event since we may be able to ignore exception
// at isolation level NONE
Agent agent = this.agent_;
final boolean origDisableDisconnect = agent.disableDisconnectEvent_;
agent.disableDisconnectEvent_ = true;
try {
// GemStone changes END
// Regardless of whether or not this statement is in the prepared state,
// we need to close any open cursors for this statement on the server.
int numberOfResultSetsToClose = (resultSetList_ == null) ? 0 : resultSetList_.length;
boolean willTickleServer = willTickleServer(numberOfResultSetsToClose, true);
try {
if (willTickleServer) {
flowClose();
} else {
flowCloseOutsideUOW();
}
} finally {
markClosed(true);
}
// GemStone changes BEGIN
} catch (SqlException sqle) {
agent = this.agent_;
if (agent.connection_.doFailoverOnException(sqle.getSQLState(),
sqle.getErrorCode(), sqle) != FailoverStatus.NONE) {
// ignore failover in close
return;
}
// explicitly invoke disconnectEvent since it has been disabled
// before the invocation of methods that allow for failover
if (!origDisableDisconnect && sqle instanceof DisconnectException) {
agent.disconnectEvent();
}
throw sqle;
} finally {
this.agent_.disableDisconnectEvent_ = origDisableDisconnect;
}
// GemStone changes END
}
// GemStone changes BEGIN
protected void cleanSingleHopPrepStmnt() throws SqlException {
}
protected int[] setAndStoreClientParamType(int[] clientParamtype) {
return null;
}
// GemStone changes END
/**
* Returns the value of the poolable hint, indicating whether
* pooling is requested.
*
* @return The value of the poolable hint.
* @throws SQLException if the Statement has been closed.
*/
public boolean isPoolable() throws SQLException {
try {
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "isPoolable");
}
// Assert the statement has not been closed
checkForClosedStatement();
return isPoolable;
}
}
catch (SqlException se) {
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
/**
* Requests that a Statement be pooled or not.
*
* @param poolable requests that the Statement be pooled if true
* and not be pooled if false.
* @throws SQLException if the Statement has been closed.
*/
public void setPoolable(boolean poolable) throws SQLException {
try {
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "setPoolable", poolable);
}
// Assert the statement has not been closed
checkForClosedStatement();
isPoolable = poolable;
}
}
catch (SqlException se) {
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int getMaxFieldSize() throws SQLException {
try
{
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "getMaxFieldSize");
}
checkForClosedStatement();
return maxFieldSize_;
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public void setMaxFieldSize(int max) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "setMaxFieldSize", max);
}
checkForClosedStatement();
if (max < 0) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_MAXFIELD_SIZE),
new Integer(max));
}
maxFieldSize_ = max;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int getMaxRows() throws SQLException {
try
{
checkForClosedStatement();
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getMaxRows", maxRows_);
}
return maxRows_;
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public void setMaxRows(int maxRows) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "setMaxRows", maxRows);
}
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
if (maxRows < 0) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_MAX_ROWS_VALUE),
new Integer(maxRows));
}
maxRows_ = maxRows;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public void setEscapeProcessing(boolean enable) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "setEscapeProcessing", enable);
}
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int getQueryTimeout() throws SQLException {
try
{
checkForClosedStatement();
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getQueryTimeout", timeout_);
}
return timeout_;
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public void setQueryTimeout(int seconds) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "setQueryTimeout", seconds);
}
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
if (seconds < 0) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_QUERYTIMEOUT_VALUE),
new Integer(seconds));
}
if (seconds != timeout_) {
timeout_ = seconds;
doWriteTimeout = true;
}
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public void cancel() throws SQLException {
try
{
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "cancel");
}
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
// cancel thru thin client works for all prepared statements and
// select queries in case of un-prepared statements
if (this.isPreparedStatement_ || this.isQueryMode()) {
// make a new connection
Properties props = connection_.getConnectionProperties();
props.setProperty(ClientAttribute.LOAD_BALANCE, "true");
String host = agent_.getServer();
String serverPort = Integer.toString(agent_.getPort());
java.sql.Connection conn = null;
try {
conn = (NetConnection)java.sql.DriverManager.getConnection(
com.pivotal.gemfirexd.internal.client.am.Configuration
.jdbcDerbyNETProtocol() + host + ':' + serverPort,
props);
// cancel the statement
String cancelStmt = "CALL SYS.CANCEL_STATEMENT(" +
"'" + statementUUID + "'" + ")";
conn.createStatement().execute(cancelStmt);
} finally {
if (conn != null) {
conn.close();
}
}
} else {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.CANCEL_NOT_SUPPORTED_BY_SERVER));
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public java.sql.SQLWarning getWarnings() throws SQLException {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getWarnings", warnings_);
}
try {
checkForClosedStatement();
} catch (SqlException se) {
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
return warnings_ == null ? null : warnings_.getSQLWarning(
agent_ /* GemStoneAddition */);
}
public void clearWarnings() throws SQLException {
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "clearWarnings");
}
try {
checkForClosedStatement();
} catch (SqlException se) {
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
clearWarningsX();
}
}
// An untraced version of clearWarnings()
final void clearWarningsX() {
warnings_ = null;
}
// Dnc statements are already associated with a unique cursor name as defined
// by our canned dnc package set.
// ResultSet.getCursorName() should be used to
// obtain the for update cursor name to use when executing a positioned update statement.
// See Jdbc 3 spec section 14.2.4.4.
public void setCursorName(String name) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "setCursorName", name);
}
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
if (name == null || name.equals("")) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.CURSOR_INVALID_NAME),
name);
}
// Invalid to set the cursor name if there are ResultSet's open on the Statement.
if (resultSet_ != null && resultSet_.openOnClient_) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.LANG_CANT_INVALIDATE_OPEN_RESULT_SET),
"setCursorName()", "Statement");
}
// DERBY-1036: Duplicate cursor names not allowed, check
// deferred till execute time.
cursorName_ = name;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
//----------------------- Multiple Results --------------------------
public boolean execute(String sql) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "execute", sql);
}
boolean b = executeX(sql);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "execute", b);
}
return b;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
boolean executeX(String sql) throws SqlException {
flowExecute(executeMethod__, sql);
return resultSet_ != null;
}
public java.sql.ResultSet getResultSet() throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "getResultSet");
}
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getResultSet", resultSet_);
}
return resultSet_;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int getUpdateCount() throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "getUpdateCount");
}
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getUpdateCount", updateCount_);
}
return updateCount_;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public boolean getMoreResults() throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "getMoreResults");
}
boolean resultIsResultSet = getMoreResultsX(CLOSE_ALL_RESULTS);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getMoreResults", resultIsResultSet);
}
return resultIsResultSet;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
//--------------------------JDBC 2.0-----------------------------
public void setFetchDirection(int direction) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "setFetchDirection", direction);
}
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
switch (direction) {
case java.sql.ResultSet.FETCH_FORWARD:
case java.sql.ResultSet.FETCH_REVERSE:
case java.sql.ResultSet.FETCH_UNKNOWN:
fetchDirection_ = direction;
break;
default:
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_FETCH_DIRECTION),
new Integer(direction));
}
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int getFetchDirection() throws SQLException {
try
{
checkForClosedStatement();
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getFetchDirection", fetchDirection_);
}
return fetchDirection_;
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public void setFetchSize(int rows) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "setFetchSize", rows);
}
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
if (rows < 0 || (maxRows_ != 0 && rows > maxRows_)) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_ST_FETCH_SIZE),
new Integer(rows)).getSQLException(agent_ /* GemStoneAddition */);
}
fetchSize_ = rows;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int getFetchSize() throws SQLException {
try
{
checkForClosedStatement();
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getFetchSize", fetchSize_);
}
return fetchSize_;
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int getResultSetConcurrency() throws SQLException {
try
{
checkForClosedStatement();
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getResultSetConcurrency", resultSetConcurrency_);
}
return resultSetConcurrency_;
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int getResultSetType() throws SQLException {
try
{
checkForClosedStatement();
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getResultSetType", resultSetType_);
}
return resultSetType_;
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public void addBatch(String sql) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "addBatch", sql);
}
checkForClosedStatement();
sql = connection_.nativeSQLX(sql);
batch_.add(sql);
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public void clearBatch() throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "clearBatch");
}
checkForClosedStatement();
batch_.clear();
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int[] executeBatch() throws SQLException, BatchUpdateException {
try
{
synchronized (connection_) {
// GemStone changes BEGIN
int currExecSeq = connection_.incrementAndGetExecutionSequence();
// GemStone changes END
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "executeBatch");
}
// GemStone changes BEGIN
/* original code
int[] updateCounts = executeBatchX();
*/
int[] updateCounts = executeBatchX(currExecSeq);
// GemStone changes END
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "executeBatch", updateCounts);
}
return updateCounts;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
private int[] executeBatchX(int currExecSeq) throws SqlException, BatchUpdateException {
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
clearWarningsX(); // Per jdbc spec 0.7, and getWarnings() javadoc
resultSetList_ = null;
// Initialize all the updateCounts to indicate failure
// This is done to account for "chain-breaking" errors where we cannot
// read any more replies
int[] updateCounts = new int[batch_.size()];
Arrays.fill(updateCounts, -3);
// GemStone changes BEGIN
/* original code
flowExecuteBatch(updateCounts);
*/
flowExecuteBatch(updateCounts, currExecSeq);
// GemStone changes BEGIN
return updateCounts;
}
public java.sql.Connection getConnection() throws SQLException {
try
{
checkForClosedStatement();
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getConnection", connection_);
}
return connection_;
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
//--------------------------JDBC 3.0-----------------------------
public boolean getMoreResults(int current) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "getMoreResults", current);
}
boolean resultIsResultSet = getMoreResultsX(current);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getMoreResults", resultIsResultSet);
}
return resultIsResultSet;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
private boolean getMoreResultsX(int current) throws SqlException {
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
boolean resultIsResultSet;
updateCount_ = -1;
if (resultSetList_ == null) {
if (resultSet_ != null) {
if (current != KEEP_CURRENT_RESULT) {
resultSet_.closeX();
}
resultSet_ = null;
}
resultIsResultSet = false;
} else {
if (numInvisibleRS_ == 0 &&
current == CLOSE_CURRENT_RESULT &&
resultSetList_[indexOfCurrentResultSet_] != null) {
resultSetList_[indexOfCurrentResultSet_].closeX();
}
resultIsResultSet = indexOfCurrentResultSet_ + 1 < resultSetList_.length;
}
if ((current == CLOSE_ALL_RESULTS) && (numInvisibleRS_ == 0)) {
int numberOfResultSetsToClose = (resultSetList_ == null) ? 0 : indexOfCurrentResultSet_ + 1;
boolean willTickleServer = willTickleServer(numberOfResultSetsToClose, false);
if (willTickleServer) {
flowCloseRetrievedResultSets();
} else {
flowCloseRetrievedResultSetsOutsideUOW();
}
}
if (resultIsResultSet) {
resultSet_ = resultSetList_[++indexOfCurrentResultSet_];
} else {
resultSet_ = null;
}
return resultIsResultSet;
}
public java.sql.ResultSet getGeneratedKeys() throws SQLException {
try
{
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "getGeneratedKeys");
}
checkForClosedStatement();
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "getGeneratedKeys", generatedKeysResultSet_);
}
return generatedKeysResultSet_;
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "executeUpdate", sql, autoGeneratedKeys);
}
autoGeneratedKeys_ = autoGeneratedKeys;
int updateValue = executeUpdateX(sql);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "executeUpdate", updateValue);
}
return updateValue;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int executeUpdate(String sql, int columnIndexes[]) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "executeUpdate", sql, columnIndexes);
}
if (columnIndexes != null && columnIndexes.length > 0)
autoGeneratedKeys_ = Statement.RETURN_GENERATED_KEYS;
generatedKeysColumnIndexes_ = columnIndexes;
int updateValue = executeUpdateX(sql);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "executeUpdate", updateValue);
}
return updateValue;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int executeUpdate(String sql, String columnNames[]) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "executeUpdate", sql, columnNames);
}
if (columnNames != null && columnNames.length > 0)
autoGeneratedKeys_ = Statement.RETURN_GENERATED_KEYS;
generatedKeysColumnNames_ = columnNames;
int updateValue = executeUpdateX(sql);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "executeUpdate", updateValue);
}
return updateValue;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public boolean execute(String sql, int autoGeneratedKeys) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "execute", sql, autoGeneratedKeys);
}
autoGeneratedKeys_ = autoGeneratedKeys;
boolean b = executeX(sql);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "execute", b);
}
return b;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public boolean execute(String sql, int columnIndexes[]) throws SQLException {
try
{
synchronized(connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "execute", sql, columnIndexes);
}
if (columnIndexes != null && columnIndexes.length > 0)
autoGeneratedKeys_ = Statement.RETURN_GENERATED_KEYS;
generatedKeysColumnIndexes_ = columnIndexes;
boolean b = executeX(sql);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "execute", b);
}
return b;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public boolean execute(String sql, String columnNames[]) throws SQLException {
try
{
synchronized (connection_) {
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "execute", sql, columnNames);
}
if (columnNames != null && columnNames.length > 0)
autoGeneratedKeys_ = Statement.RETURN_GENERATED_KEYS;
generatedKeysColumnNames_ = columnNames;
boolean b = executeX(sql);
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceExit(this, "execute", b);
}
return b;
}
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
public int getResultSetHoldability() throws SQLException {
try
{
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceEntry(this, "getResultSetHoldability");
}
checkForClosedStatement();
return resultSetHoldability_;
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
// ----------------------- box car and callback methods ---------------------
// All callbacks must be client-side only operations.
// Use of MaterialStatement interface is necessary to avoid multiple inheritance problem in Java.
/**
* This variable keeps track of a Section dediacted to
* writeSpecialRegister. It gets initialized the first time a
* Section is needed, and freed when the Statement is closed.
*/
private Section setSpecialRegisterSection_ = null;
public void writeSetSpecialRegister(java.util.ArrayList sqlsttList)
throws SqlException {
if (setSpecialRegisterSection_ == null) {
setSpecialRegisterSection_ =
agent_.sectionManager_.getDynamicSection
(java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT);
}
materialStatement_.writeSetSpecialRegister_(setSpecialRegisterSection_,
sqlsttList);
}
public void readSetSpecialRegister() throws SqlException {
if (SanityManager.DEBUG) {
SanityManager.ASSERT(setSpecialRegisterSection_ != null);
}
materialStatement_.readSetSpecialRegister_();
}
public void writeExecuteImmediate(String sql,
Section section) throws SqlException {
materialStatement_.writeExecuteImmediate_(sql, section);
}
public void readExecuteImmediate() throws SqlException {
materialStatement_.readExecuteImmediate_();
}
public void completeExecuteImmediate(Sqlca sqlca) {
int sqlcode = completeSqlca(sqlca);
if (sqlcode < 0) {
return;
}
if (sqlca != null) {
updateCount_ = sqlca.getUpdateCount();
}
}
public void readExecuteImmediateForBatch(String sql) throws SqlException {
materialStatement_.readExecuteImmediateForBatch_(sql);
}
public void writePrepareDescribeOutput(String sql,
Section section,
boolean needStatementUUID) throws SqlException {
materialStatement_.writePrepareDescribeOutput_(sql, section, needStatementUUID);
}
public void readPrepareDescribeOutput() throws SqlException {
materialStatement_.readPrepareDescribeOutput_();
}
public void writeGetStmtUUID(Section section) throws SqlException {
materialStatement_.writeGetStmtUUID(section);
}
public void readStatementID() throws SqlException {
materialStatement_.readStatementID_();
}
public void completePrepareDescribeOutput(ColumnMetaData resultSetMetaData,
Sqlca sqlca) {
completePrepare(sqlca);
resultSetMetaData_ = resultSetMetaData;
if (agent_.loggingEnabled()) {
agent_.logWriter_.traceResultSetMetaData(this, resultSetMetaData_);
}
}
// Used for re-prepares across commit only
public void writePrepare(String sql, Section section) throws SqlException {
materialStatement_.writePrepare_(sql, section);
}
public void readPrepare() throws SqlException {
materialStatement_.readPrepare_();
}
public void completePrepare(Sqlca sqlca) {
int sqlcode = completeSqlca(sqlca);
if (sqlcode < 0) {
return;
}
markPrepared();
}
public void writeOpenQuery(Section section,
int fetchSize,
int resultSetType) throws SqlException {
materialStatement_.writeOpenQuery_(section,
fetchSize,
resultSetType);
}
public void readOpenQuery() throws SqlException {
materialStatement_.readOpenQuery_();
}
public void completeOpenQuery(Sqlca sqlca, ResultSet resultSet) {
completeSqlca(sqlca);
resultSet_ = resultSet;
// For NET, resultSet_ == null when open query fails and receives OPNQFLRM.
// Then, in NetStatementReply.parseOpenQueryFailure(), completeOpenQuery() is
// invoked with resultSet explicitly set to null.
if (resultSet == null) {
return;
}
resultSet.resultSetMetaData_ = resultSetMetaData_;
resultSet.resultSetMetaData_.resultSetConcurrency_ = resultSet.resultSetConcurrency_;
// Create tracker for LOB locator columns.
resultSet.createLOBColumnTracker();
// only cache the Cursor object for a PreparedStatement and if a Cursor object is
// not already cached.
if (cachedCursor_ == null && isPreparedStatement_) {
cachedCursor_ = resultSet_.cursor_;
}
// The following two assignments should have already happened via prepareEvent(),
// but are included here for safety for the time being.
if (sqlca != null && sqlca.getSqlCode() < 0) {
return;
}
openOnServer_ = true;
resultSet.cursor_.rowsRead_ = 0;
// Set fetchSize_ to the default(64) if not set by the user if the resultset is scrollable.
// This fetchSize_ is used to check for a complete rowset when rowsets are parsed.
// For scrollable cursors when the fetchSize_ is not set, (fetchSize_ == 0), a default
// fetchSize of 64 is sent on behalf of the application, so we need to update the fetchSize_
// here to 64.
if (resultSet_.fetchSize_ == 0 &&
(resultSet_.resultSetType_ == java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE ||
resultSet_.resultSetType_ == java.sql.ResultSet.TYPE_SCROLL_SENSITIVE)) {
resultSet_.setFetchSize_(com.pivotal.gemfirexd.internal.client.am.
Configuration.defaultFetchSize);
}
}
public void completeExecuteCallOpenQuery(Sqlca sqlca, ResultSet resultSet, ColumnMetaData resultSetMetaData, Section generatedSection) {
resultSet.completeSqlca(sqlca);
// For CallableStatements we can't just clobber the resultSet_ here, must use setResultSetEvent() separately
resultSet.resultSetMetaData_ = resultSetMetaData;
// Create tracker for LOB locator columns.
resultSet.createLOBColumnTracker();
// The following two assignments should have already happened via prepareEvent(),
// but are included here for safety for the time being.
if (sqlca != null && sqlca.getSqlCode() < 0) {
return;
}
openOnServer_ = true;
resultSet.cursor_.rowsRead_ = 0;
resultSet.generatedSection_ = generatedSection;
// We are always sending the default fetchSize of 64 if not set for stored procedure calls.
// This is different from the "normal" cursor case for forward_only cursors, where if
// fetchSize_ is not set, we do not send any default value. Here since we always send
// the fetchSize_, we need to set it to what we sent.
if (resultSet.fetchSize_ == 0) {
resultSet.fetchSize_ = com.pivotal.gemfirexd.internal.client.am.Configuration.defaultFetchSize;
}
}
public void writeExecuteCall(boolean outputExpected,
String procedureName,
Section section,
int fetchSize,
boolean suppressResultSets, // for batch updates == true
int resultSetType,
ColumnMetaData parameterMetaData,
Object[] inputs) throws SqlException {
materialStatement_.writeExecuteCall_(outputExpected,
procedureName,
section,
fetchSize,
suppressResultSets,
resultSetType,
parameterMetaData,
inputs);
}
public void readExecuteCall() throws SqlException {
materialStatement_.readExecuteCall_();
}
public void completeExecuteCall(Sqlca sqlca, Cursor singletonParams, ResultSet[] resultSets) {
completeExecuteCall(sqlca, singletonParams);
resultSetList_ = resultSets;
if (resultSets != null) {
resultSet_ = resultSets[0];
}
indexOfCurrentResultSet_ = 0;
}
public void completeExecuteCall(Sqlca sqlca, Cursor singletonParams) // no result sets returned
{
completeExecute(sqlca);
//if ((sqlca != null) && ((sqlca.getSqlCode() < 0) || (sqlca.getSqlCode() == 100)))
if (sqlca != null && sqlca.getSqlCode() < 0) {
singletonRowData_ = null;
} else {
singletonRowData_ = singletonParams;
if (cachedSingletonRowData_ == null && isPreparedStatement_) {
cachedSingletonRowData_ = singletonRowData_;
}
}
}
// Callback for CALLS, and PreparedStatement updates.
public void completeExecute(Sqlca sqlca) {
if (sqlca == null) {
return;
}
int sqlcode = sqlca.getSqlCode();
if (sqlcode < 0) {
agent_.accumulateReadException(new SqlException(agent_.logWriter_, sqlca));
returnValueFromProcedure_ = sqlcode;
} else {
updateCount_ = sqlca.getUpdateCount();
// sometime for call statement, protocol will return updateCount_, we will always set that to 0
// sqlMode_ is not set for statements, only for prepared statements
if (sqlMode_ == isCall__) {
updateCount_ = -1;
returnValueFromProcedure_ = sqlca.getSqlErrd()[0]; ////what is this for??
}
// Sqlcode 466 indicates a call statement has issued and result sets returned.
// This is a good place to set some state variable to indicate result sets are open
// for call, so that when autocommit is true, commit will not be issued until the
// result sets are closed.
// Currently, commit is not issued even there is no result set.
// do not externalize sqlcode +100
if (sqlcode > 0 && sqlcode != 466 && sqlcode != 100) {
accumulateWarning(new SqlWarning(agent_.logWriter_, sqlca));
}
}
}
public void setUpdateCount(int updateCount) {
updateCount_ = updateCount;
}
/**
* Designates the owner of this statement, typically a logical statement.
*
* @param owner the owning statement, if any
*/
protected final void setOwner(java.sql.Statement owner) {
this.owner = owner;
}
/**
* Returns the owner of this statement, if any.
*
* @return The designated owner of this statement, or {@code null} if none.
*/
final java.sql.Statement getOwner() {
return this.owner;
}
private boolean willTickleServer(int number, boolean allowAutoCommits) throws SqlException {
boolean requiresAutocommit = false;
if (resultSetList_ != null) {
for (int i = 0; i < number; i++) {
if (resultSetList_[i] != null) {
if (resultSetList_[i].openOnServer_) {
return true; // for the writeClose flow
}
if (!resultSetList_[i].autoCommitted_ && allowAutoCommits) {
requiresAutocommit = true; // for the commit flow
}
}
}
} else if (generatedKeysResultSet_ != null && generatedKeysResultSet_.openOnServer_) {
generatedKeysResultSet_.writeClose();
} else if (resultSet_ != null) {
if (resultSet_.openOnServer_) {
return true; // for the writeClose flow
}
if (!resultSet_.autoCommitted_ && allowAutoCommits) {
requiresAutocommit = true;
}
}
if (connection_.autoCommit_ && requiresAutocommit) { // for the auto-commit;
if (connection_.isXAConnection_) {
return (connection_.getXAState() == Connection.XA_T0_NOT_ASSOCIATED) ;
} else {
return true;
}
}
return false;
}
private void flowClose() throws SqlException {
// GemStone changes BEGIN
long cid = 0;
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
cid = SanityManager.getConnectionId(this.connection_);
SanityManager.DEBUG_PRINT_COMPACT("flowStmtClose_S", null, cid,
ns, true, null);
}
try {
// GemStone changes END
agent_.beginWriteChain(this);
writeClose(true); // true means permit auto-commits
agent_.flow(this);
readClose(true); // true means permit auto-commits
agent_.endReadChain();
// GemStone changes BEGIN
} finally {
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
SanityManager.DEBUG_PRINT_COMPACT("flowStmtClose_E", null, cid,
ns, false, null);
}
}
// GemStone changes END
}
private void flowCloseOutsideUOW() throws SqlException {
// GemStone changes BEGIN
long cid = 0;
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
cid = SanityManager.getConnectionId(this.connection_);
SanityManager.DEBUG_PRINT_COMPACT("flowCloseOUOW_S", null, cid,
ns, true, null);
}
try {
// GemStone changes END
agent_.beginWriteChainOutsideUOW();
writeClose(true); // true means permit auto-commits
agent_.flowOutsideUOW();
readClose(true); // true means permit auto-commits
agent_.endReadChain();
// GemStone changes BEGIN
} finally {
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
SanityManager.DEBUG_PRINT_COMPACT("flowCloseOUOW_E", null, cid,
ns, false, null);
}
}
// GemStone changes END
}
final void writeClose(boolean allowAutoCommits) throws SqlException {
writeCloseResultSets(allowAutoCommits);
}
final void readClose(boolean allowAutoCommits) throws SqlException {
readCloseResultSets(allowAutoCommits);
}
final boolean writeCloseResultSets(boolean allowAutoCommits) throws SqlException {
int numberOfResultSetsToClose = (resultSetList_ == null) ? 0 : resultSetList_.length;
return writeCloseResultSets(numberOfResultSetsToClose, allowAutoCommits);
}
// The connection close processing passes allowAutoCommits=false because if we drove an
// autocommits after each statement close, then when we issue close requests on non-held cursors
// the server would complain that the non-held cursor was already closed from the previous statement's auto-commit.
// So the solution is to never autocommit statements during connection close processing.
//
// Here's the operative explanation:
// Given a sequence of open statements S1, S2, .... a logic problem is occuring after S1 close-query
// drives an auto-commit, and S2 close-query is driven against a non-held cursor.
// The first auto-commit driven by S1 triggers a callback that closes S2's non-held cursor,
// and so the subsequent S2 close-query request generates an error from the server saying
// that the cursor is already closed.
//
// This is fixed by passing a flag to our statement close processing that prevents
// driving additional auto-commits after each statement close.
// Connectino close drives its own final auto-commit.
//
boolean writeCloseResultSets(int number, boolean allowAutoCommits) throws SqlException {
boolean requiresAutocommit = false;
if (resultSetList_ != null) {
for (int i = 0; i < number; i++) {
if (resultSetList_[i] != null) {
if (resultSetList_[i].openOnServer_) {
resultSetList_[i].writeClose();
}
if (!resultSetList_[i].autoCommitted_ && allowAutoCommits) {
requiresAutocommit = true;
}
}
}
} else if (generatedKeysResultSet_ != null && generatedKeysResultSet_.openOnServer_) {
generatedKeysResultSet_.writeClose();
} else if (resultSet_ != null) {
if (resultSet_.openOnServer_) {
resultSet_.writeClose();
}
if (!resultSet_.autoCommitted_ && allowAutoCommits) {
requiresAutocommit = true;
}
}
if (connection_.autoCommit_ && requiresAutocommit && isAutoCommittableStatement_) {
connection_.writeAutoCommit();
if (connection_.isXAConnection_) {
return (connection_.getXAState() == Connection.XA_T0_NOT_ASSOCIATED) ;
} else {
return true;
}
}
return false;
}
// Helper method for S.flowCloseResultSets() and PS.flowExecute()
final void readCloseResultSets(boolean allowAutoCommits) throws SqlException {
int numberOfResultSetsToClose = (resultSetList_ == null) ? 0 : resultSetList_.length;
readCloseResultSets(numberOfResultSetsToClose, allowAutoCommits);
}
void readCloseResultSets(int number, boolean allowAutoCommits) throws SqlException {
boolean requiredAutocommit = false;
if (resultSetList_ != null) {
for (int i = 0; i < number; i++) {
if (resultSetList_[i] != null) {
if (resultSetList_[i].openOnServer_) {
resultSetList_[i].readClose();
} else {
resultSetList_[i].markClosed();
}
if (!resultSetList_[i].autoCommitted_ && allowAutoCommits) {
requiredAutocommit = true;
}
}
}
} else if (generatedKeysResultSet_ != null) {
if (generatedKeysResultSet_.openOnServer_) {
generatedKeysResultSet_.readClose();
} else {
generatedKeysResultSet_.markClosed();
}
} else if (resultSet_ != null) {
if (resultSet_.openOnServer_) {
resultSet_.readClose();
} else {
resultSet_.markClosed();
}
if (!resultSet_.autoCommitted_ && allowAutoCommits) {
requiredAutocommit = true;
}
}
// we only commit when auto commit is turned on and at least one result set needed closing on server.
if (connection_.autoCommit_ && requiredAutocommit && isAutoCommittableStatement_) {
connection_.readAutoCommit();
}
}
private void flowCloseRetrievedResultSets() throws SqlException {
// GemStone changes BEGIN
long cid = 0;
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
cid = SanityManager.getConnectionId(this.connection_);
SanityManager.DEBUG_PRINT_COMPACT("flowCloseRRS_S", null, cid,
ns, true, null);
}
try {
// GemStone changes END
int numberOfResultSetsToClose = (resultSetList_ == null) ? 0 : indexOfCurrentResultSet_ + 1;
agent_.beginWriteChain(this);
// Need to refactor the ResultSet.readClose() path to check if we are the
// last result set closed in a set of multiple result sets of the owning statement,
// if so, we need to flow the auto-commit (but only then).
// currently, the code to do this is only in the closeX() path, which isn't called here
writeCloseResultSets(numberOfResultSetsToClose, false);
agent_.flow(this);
readCloseResultSets(numberOfResultSetsToClose, false); // true means permit auto-commits
agent_.endReadChain();
// GemStone changes BEGIN
} finally {
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
SanityManager.DEBUG_PRINT_COMPACT("flowCloseRRS_E", null, cid,
ns, false, null);
}
}
// GemStone changes END
}
private void flowCloseRetrievedResultSetsOutsideUOW() throws SqlException {
// GemStone changes BEGIN
long cid = 0;
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
cid = SanityManager.getConnectionId(this.connection_);
SanityManager.DEBUG_PRINT_COMPACT("flowCloseRRSOUOW_S", null, cid,
ns, true, null);
}
try {
// GemStone changes END
int numberOfResultSetsToClose = (resultSetList_ == null) ? 0 : indexOfCurrentResultSet_ + 1;
agent_.beginWriteChainOutsideUOW();
// Need to refactor the ResultSet.readClose() path to check if we are the
// last result set closed in a set of multiple result sets of the owning statement,
// if so, we need to flow the auto-commit (but only then).
// currently, the code to do this is only in the closeX() path, which isn't called here
writeCloseResultSets(numberOfResultSetsToClose, false);
agent_.flowOutsideUOW();
readCloseResultSets(numberOfResultSetsToClose, false); // true means permit auto-commits
agent_.endReadChain();
// GemStone changes BEGIN
} finally {
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
SanityManager.DEBUG_PRINT_COMPACT("flowCloseRRSOUOW_E", null, cid,
ns, false, null);
}
}
// GemStone changes END
}
public int completeSqlca(Sqlca sqlca) {
if (sqlca == null) {
return 0;
}
int sqlcode = sqlca.getSqlCode();
if (sqlcode < 0) {
connection_.agent_.accumulateReadException(new SqlException(agent_.logWriter_, sqlca));
} else if (sqlcode > 0) {
accumulateWarning(new SqlWarning(agent_.logWriter_, sqlca));
}
return sqlcode;
}
public void completeExecuteSetStatement(Sqlca sqlca) {
}
void markClosedOnServer() {
if (section_ != null) {
section_.free();
section_ = null;
}
openOnServer_ = false;
// if an error occurs during the middle of the reset, before the statement
// has a chance to reset its materialStatement_, and Agent.disconnectEvent() is called,
// then the materialStatement_ here can be null.
if (materialStatement_ != null) {
materialStatement_.markClosedOnServer_();
}
}
/**
* This method cleans up client-side resources held by this Statement.
* The Statement will not be removed from the open statements list and
* PreparedStatement will also not be removed from the commit and rollback
* listeners list in com.pivotal.gemfirexd.internal.client.am.Connection.
*
* This method is called from:
* 1. finalize() - For the finaizer to be called, the Statement
* should not have any references and so it should have been already
* removed from the lists.
*
* 2. com.pivotal.gemfirexd.internal.client.am.Connection#markStatementsClosed
* This method explicitly removes the Statement from open statements list.
*
* 3. To close positioned update statements - These statements are not
* added to the list of open statements.
*/
void markClosed() {
markClosed(false);
}
/**
* This method cleans up client-side resources held by this Statement.
* If removeListener is true, the Statement is removed from open statements
* list and PreparedStatement is also removed from commit and rollback
* listeners list. This is called from the close methods.
*
* @param removeListener if true the Statement will be removed
* from the open statements list and PreparedStatement will also be removed
* from commit and rollback listeners list in
* com.pivotal.gemfirexd.internal.client.am.Connection.
*/
void markClosed(boolean removeListener) {
openOnClient_ = false;
markResultSetsClosed();
// in case a cursorName was set on the Statement but the Statement was
// never used to execute a query, the cursorName will not be removed
// when the resultSets are mark closed, so we need to remove the
// cursorName form the cache.
removeClientCursorNameFromCache();
markPreparedStatementForAutoGeneratedKeysClosed();
markClosedOnServer();
// mark close ResultSetMetaData
if (resultSetMetaData_ != null) {
resultSetMetaData_.markClosed();
resultSetMetaData_ = null;
}
if(removeListener)
connection_.openStatements_.remove(this);
if (setSpecialRegisterSection_ != null) {
setSpecialRegisterSection_.free();
setSpecialRegisterSection_ = null;
}
}
void markPreparedStatementForAutoGeneratedKeysClosed() {
if (preparedStatementForAutoGeneratedKeys_ != null) {
preparedStatementForAutoGeneratedKeys_.markClosed();
}
}
/**
* Mark all ResultSets associated with this statement as
* closed. The ResultSets will not be removed from the commit and
* rollback listeners list in
* com.pivotal.gemfirexd.internal.client.am.Connection.
*/
void markResultSetsClosed() {
markResultSetsClosed(false);
}
/**
* Mark all ResultSets associated with this statement as
* closed.
*
* @param removeListener if true the ResultSets will be removed
* from the commit and rollback listeners list in
* com.pivotal.gemfirexd.internal.client.am.Connection.
*/
final void markResultSetsClosed(boolean removeListener) {
if (resultSetList_ != null) {
for (int i = 0; i < resultSetList_.length; i++) {
if (resultSetList_[i] != null) {
resultSetList_[i].markClosed(removeListener);
}
resultSetList_[i] = null;
}
}
if (generatedKeysResultSet_ != null) {
generatedKeysResultSet_.markClosed(removeListener);
}
if (resultSet_ != null) {
resultSet_.markClosed(removeListener);
}
resultSet_ = null;
resultSetList_ = null;
generatedKeysResultSet_ = null;
}
private void flowExecute(int executeType, String sql) throws SqlException {
// GemStone changes BEGIN
long cid = 0;
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
cid = SanityManager.getConnectionId(this.connection_);
SanityManager.DEBUG_PRINT_COMPACT("STMT_flowExecute_S", sql, cid,
ns, true, null);
}
// disable disconnect event that will close everything since we may be
// able to failover and retry
final boolean origDisableDisconnect = this.agent_.disableDisconnectEvent_;
this.agent_.disableDisconnectEvent_ = true;
int currExecSeq = connection_.incrementAndGetExecutionSequence();
if (SanityManager.TraceSingleHop | SanityManager.TraceClientHA) {
SanityManager.DEBUG_PRINT(SanityManager.TRACE_SINGLE_HOP,
" Statement flowExecute called sql is "
+ sql + " execution seq: " + currExecSeq);
}
try {
java.util.Set failedUrls = null;
for (;;) {
try {
// GemStone changes END
checkForClosedStatement(); // Per jdbc spec (see java.sql.Statement.close() javadoc)
clearWarningsX(); // Per jdbc spec 0.7, and getWarnings() javadoc
sql = escape(sql);
parseSqlAndSetSqlModes(sql);
checkAutoGeneratedKeysParameters();
if (sqlMode_ == isUpdate__) {
updateCount_ = 0;
} else {
updateCount_ = -1;
}
checkForAppropriateSqlMode(executeType, sqlMode_);
// DERBY-1036: Moved check till execute time to comply with embedded
// behavior. Since we check here and not in setCursorName, several
// statements can have the same cursor name as long as their result
// sets are not simultaneously open.
if (sqlMode_ == isQuery__) {
checkForDuplicateCursorName();
}
boolean timeoutSent = false;
agent_.beginWriteChain(this);
boolean piggybackedAutoCommit = writeCloseResultSets(true); // true means permit auto-commits
ResultSet scrollableRS = null;
Section newSection = null;
boolean repositionedCursor = false;
// DERBY-1692: Statement objects need to send the timeout value for
// each execution since the server will create a new statement
// object each time. Since the server forgets the timeout value,
// doWriteTimeout should not be reset, and it is OK not to send the
// timeout value when it is zero.
if (doWriteTimeout && (timeout_ > 0)) {
specialRegisterArrayList.set(0, TIMEOUT_STATEMENT + timeout_);
writeSetSpecialRegister(specialRegisterArrayList);
timeoutSent = true;
}
switch (sqlMode_) {
case isQuery__:
newSection = agent_.sectionManager_.getDynamicSection(resultSetHoldability_);
// GemStone changes BEGIN
boolean needStamentUUID = needStatementUUID() && !connection_.cancelDisabled();
// This is for implicit savepoint
newSection.setExecutionSequence(currExecSeq);
// GemStone changes END
writePrepareDescribeOutput(sql, newSection, needStamentUUID /*GemStone addition*/);
writeOpenQuery(newSection,
fetchSize_,
resultSetType_);
break;
case isUpdate__:
String cursorName = null;
if (sqlUpdateMode_ == isDeleteSql__ || sqlUpdateMode_ == isUpdateSql__) {
String[] sqlAndCursorName = extractCursorNameFromWhereCurrentOf(sql);
if (sqlAndCursorName != null) {
cursorName = sqlAndCursorName[0];
sql = sqlAndCursorName[1];
}
}
if (cursorName != null) {
newSection = agent_.sectionManager_.getPositionedUpdateSection(cursorName, true); // true means get an execute immediate section
if (newSection == null) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.CURSOR_INVALID_NAME),
cursorName);
}
scrollableRS = agent_.sectionManager_.getPositionedUpdateResultSet(cursorName);
// do not need to reposition for rowset cursors
if (scrollableRS != null && !scrollableRS.isRowsetCursor_) {
repositionedCursor =
scrollableRS.repositionScrollableResultSetBeforeJDBC1PositionedUpdateDelete();
if (!repositionedCursor) {
scrollableRS = null;
}
}
// if client's cursor name is set, and the cursor name in the positioned update
// string is the same as the client's cursor name, replace client's cursor name
// with the server's cursor name.
if (newSection.getClientCursorName() != null &&
cursorName.compareTo(newSection.getClientCursorName()) == 0) {
// substitute cusor name in pass thru sql string
sql = substituteClientCursorNameWithServerCursorName(sql, newSection);
}
// GemStone changes BEGIN
newSection.setExecutionSequence(currExecSeq);
// GemStone changes END
writeExecuteImmediate(sql, newSection);
}
else {
newSection = agent_.sectionManager_.getDynamicSection(resultSetHoldability_);
// GemStone changes BEGIN
newSection.setExecutionSequence(currExecSeq);
// GemStone changes END
writeExecuteImmediate(sql, newSection);
if (sqlUpdateMode_ == isInsertSql__ && autoGeneratedKeys_ == RETURN_GENERATED_KEYS) {
// chain a "select from identity_val_local()" to the insert statement
prepareAutoGeneratedKeysStatement();
writeOpenQuery(preparedStatementForAutoGeneratedKeys_.section_,
preparedStatementForAutoGeneratedKeys_.fetchSize_,
preparedStatementForAutoGeneratedKeys_.resultSetType_);
}
}
// maybe duplicate a commit here if the sql is a "commit"
if (connection_.autoCommit_) {
connection_.writeAutoCommit();
}
break;
case isCall__:
// GemStone changes BEGIN
newSection = writeExecuteCall(sql, false, currExecSeq);
// GemStone changes END
break;
}
agent_.flow(this);
readCloseResultSets(true); // true means permit auto-commits
if (timeoutSent) {
readSetSpecialRegister(); // Read response to the EXCSQLSET
}
// turn inUnitOfWork_ flag back on and add statement
// back on commitListeners_ list if they were off
// by an autocommit chained to a close cursor.
if (piggybackedAutoCommit) {
connection_.completeTransactionStart();
}
markResultSetsClosed(true); // true means remove from list of commit and rollback listeners
markClosedOnServer();
section_ = newSection;
// GemStone changes BEGIN
if (SanityManager.TraceClientHA) {
SanityManager.DEBUG_PRINT(SanityManager.TRACE_CLIENT_HA,
"set newSection to " + newSection + " for " + this);
}
// GemStone changes END
switch (sqlMode_) {
case isQuery__:
if (needStatementUUID() && !connection_.cancelDisabled()) {
readStatementID();
}
// parse out the reply to a chained prepare and open request
readPrepareDescribeOutput();
// This establishes statement.resultSet
readOpenQuery();
// resultSet_ is null if open query failed.
// check for null resultSet_ before using it.
// the first rowset comes back on OPEN for static non-rowset cursors.
// no row is returned on open for rowset cursors.
if (resultSet_ != null) {
resultSet_.parseScrollableRowset();
// DERBY-1183: If we set it up it earlier, the entry in
// clientCursorNameCache_ gets wiped out by the closing of
// result sets happening during readCloseResultSets above
// because ResultSet#markClosed calls
// Statement#removeClientCursorNameFromCache.
setupCursorNameCacheAndMappings();
}
break;
case isUpdate__:
// do not need to reposition for rowset cursors.
if (scrollableRS != null && !scrollableRS.isRowsetCursor_) {
scrollableRS.readPositioningFetch_();
}
readExecuteImmediate();
if (sqlUpdateMode_ == isInsertSql__ && autoGeneratedKeys_ == RETURN_GENERATED_KEYS) {
readPrepareAutoGeneratedKeysStatement();
preparedStatementForAutoGeneratedKeys_.readOpenQuery();
generatedKeysResultSet_ = preparedStatementForAutoGeneratedKeys_.resultSet_;
preparedStatementForAutoGeneratedKeys_.resultSet_ = null;
}
if (connection_.autoCommit_) {
connection_.readAutoCommit();
}
break;
case isCall__:
readPrepare();
readExecuteCall();
break;
}
// in the case the stored procedure call is uncatalogued, we need to catch that
// kind exception and changed the call from dynamic to static
agent_.endReadChain();
// If we hear from Sun that we can just set a warning for this, then move this code to the ResultSet constructor.
// Throw an exception if holdability returned by the server is different from requested.
if (resultSet_ != null && resultSet_.resultSetHoldability_ != resultSetHoldability_ && sqlMode_ != isCall__) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.UNABLE_TO_OPEN_RS_WITH_REQUESTED_HOLDABILITY),
new Integer(resultSetHoldability_));
}
// In the case of executing a call to a stored procedure.
if (sqlMode_ == isCall__) {
parseStorProcReturnedScrollableRowset();
checkForStoredProcResultSetCount(executeType);
// When there is no result sets back, we will commit immediately when autocommit is true.
if (connection_.autoCommit_ && resultSet_ == null && resultSetList_ == null) {
connection_.flowAutoCommit();
}
}
// The JDBC spec says that executeUpdate() should return 0
// when no row count is returned.
if (executeType == executeUpdateMethod__ && updateCount_ < 0) {
updateCount_ = 0;
}
if (section_ != null) {
section_.recordSuccessAndclearExecutionSequence(connection_, currExecSeq);
}
// GemStone changes BEGIN
break;
} catch (SqlException sqle) {
failedUrls = connection_.handleFailover(failedUrls, sqle);
// re-prepare the statement, if required, before retry
preparePostFailover();
}
}
} finally {
this.agent_.disableDisconnectEvent_ = origDisableDisconnect;
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
SanityManager.DEBUG_PRINT_COMPACT("STMT_flowExecute_E", sql, cid,
ns, false, null);
}
}
// GemStone changes END
}
void flowExecuteBatch(int[] updateCounts, int currExecSeq) throws SqlException, BatchUpdateException {
// GemStone changes BEGIN
long cid = 0;
String batchStr = null;
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
cid = SanityManager.getConnectionId(this.connection_);
batchStr = this.batch_.toString();
SanityManager.DEBUG_PRINT_COMPACT("STMT_flowExecuteBatch_S",
batchStr, cid, ns, true, null);
}
if (SanityManager.TraceSingleHop | SanityManager.TraceClientHA) {
SanityManager.DEBUG_PRINT(SanityManager.TRACE_CLIENT_HA,
" Statement flowExecuteBatch called "
+ " execution seq: " + currExecSeq);
}
// disable disconnect event that will close everything since we may be
// able to failover and retry
final boolean origDisableDisconnect = this.agent_.disableDisconnectEvent_;
this.agent_.disableDisconnectEvent_ = true;
try {
java.util.Set failedUrls = null;
for (;;) {
SqlException chainBreaker = null;
boolean doRetry = false;
try {
/* (original code)
SqlException chainBreaker = null;
*/
// GemStone changes END
boolean isCallCataloguedBestGuess = true;
agent_.beginBatchedWriteChain(this);
for (int i = 0; i < batch_.size(); i++) {
if (doRetry) {
connection_.incrementAndGetExecutionSequence();
}
boolean flowSQL = true;
String sql = (String) batch_.get(i);
parseSqlAndSetSqlModes(sql);
try {
checkForInvalidBatchedSql(sql);
} catch (SqlException e) {
flowSQL = false;
}
// if you have a length mismatch for a lob flow, then we need to return a -3
// need to trap the exceptions coming back from writeExecuteImmediate and continue on with a -3
// net will need to be able to reset the send buffer
if (flowSQL) {
if (section_ != null) {
section_.free();
}
if (sqlMode_ != isCall__) {
section_ =
agent_.sectionManager_.getDynamicSection(resultSetHoldability_);
writeExecuteImmediate(sql, section_);
} else {
// GemStone changes BEGIN
section_ = writeExecuteCall(sql, true, currExecSeq);
// GemStone changes END
}
// GemStone changes BEGIN
if (SanityManager.TraceClientHA) {
SanityManager.DEBUG_PRINT(SanityManager.TRACE_CLIENT_HA,
"set section_ to " + this.section_ + " for " + this);
}
// GemStone changes END
}
}
if (connection_.autoCommit_) {
connection_.writeAutoCommit();
}
agent_.flowBatch(this, batch_.size());
try {
for (int i = 0; i < batch_.size(); i++) {
agent_.setBatchedExceptionLabelIndex(i);
SqlException invalidSQLCaughtByClient = null;
String sql = (String) batch_.get(i);
parseSqlAndSetSqlModes(sql);
try {
checkForInvalidBatchedSql(sql);
} catch (SqlException e) {
invalidSQLCaughtByClient = e;
}
if (invalidSQLCaughtByClient == null) {
updateCount_ = -1;
if (sqlMode_ != isCall__) {
readExecuteImmediateForBatch(sql);
} else {
if (isCallCataloguedBestGuess) {
readPrepare();
}
readExecuteCall();
}
} else {
agent_.accumulateReadException(invalidSQLCaughtByClient);
updateCount_ = java.sql.Statement.EXECUTE_FAILED;
invalidSQLCaughtByClient = null;
}
updateCounts[i] = updateCount_;
// DERBY doesn't return an update count for DDL statements, so we need to
// remap our initial value of -1 (represents invalid update count) to a
// valid update count of zero.
if (updateCounts[i] == -1) {
updateCounts[i] = 0;
}
}
agent_.disableBatchedExceptionTracking(); // to prvent the following readCommit() from getting a batch label
if (connection_.autoCommit_) {
connection_.readAutoCommit(); // this could throw a chainbreaker too
}
}
// for chain-breaking exception only, all read() methods do their own accumulation
// this catches the entire accumulated chain, we need to be careful not to
// reaccumulate it on the agent since the batch labels will be overwritten if
// batch exception tracking is enabled.
catch (SqlException e) {
chainBreaker = e;
chainBreaker.setNextException(new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.BATCH_CHAIN_BREAKING_EXCEPTION)));
}
// We need to clear the batch before any exception is thrown from agent_.endBatchedReadChain().
// GemStone changes BEGIN
//batch_.clear();
// GemStone changes END
agent_.endBatchedReadChain(updateCounts, chainBreaker);
if (section_ != null) {
section_.recordSuccessAndclearExecutionSequence(connection_, currExecSeq);
}
// GemStone changes BEGIN
break;
} catch (SqlException sqle) {
failedUrls = connection_.handleFailover(failedUrls, sqle);
// re-prepare the statement, if required, before retry
preparePostFailover();
doRetry = true;
} catch (BatchUpdateException bue) {
if (chainBreaker != null) {
failedUrls = connection_.handleFailover(failedUrls, chainBreaker);
// re-prepare the statement, if required, before retry
preparePostFailover();
doRetry = true;
}
else {
throw bue;
}
} finally {
if (!doRetry) {
this.batch_.clear();
}
}
}
} finally {
this.agent_.disableDisconnectEvent_ = origDisableDisconnect;
if (SanityManager.TraceClientStatement) {
final long ns = System.nanoTime();
SanityManager.DEBUG_PRINT_COMPACT("STMT_flowExecuteBatch_E",
batchStr, cid, ns, false, null);
}
}
// GemStone changes END
}
// GemStone changes BEGIN
private Section writeExecuteCall(String sql,
boolean isBatch, int execSeq) throws SqlException {
// GemStone changes END
Section newSection = null;
newSection = agent_.sectionManager_.getDynamicSection(resultSetHoldability_);
// this code is beneficial only if there is literal in the sql call statement
// GemStone changes BEGIN
if (newSection != null) {
newSection.setExecutionSequence(execSeq);
}
// GemStone changes END
writePrepare(sql, newSection);
writeExecuteCall(false, // no out parameters, outputExpected = false
null, // sql is prepared, procedureName = null
newSection,
fetchSize_,
isBatch, // do not suppress ResultSets for regular CALLs
resultSetType_,
null, // no parameters, parameterMetaData = null
null); // no parameters, inputs = null
return newSection;
}
//------------------material layer event callbacks follow---------------------
// All callbacks are client-side only operations
public void listenToUnitOfWork() {
} // do nothing for now.
public void completeLocalCommit(java.util.Iterator listenerIterator) {
} // do nothing for now.
public void completeLocalRollback(java.util.Iterator listenerIterator) {
} // do nothing for now.
// This method will not work if e is chained.
// It is assumed that e is a single warning and is not chained.
public void accumulateWarning(SqlWarning e) {
if (warnings_ == null) {
warnings_ = e;
} else {
warnings_.setNextWarning(e);
}
}
private void markPrepared() {
//openOnClient_ = true;
openOnServer_ = true;
listenToUnitOfWork();
}
//-------------------------------helper methods-------------------------------
// GemStone changes BEGIN
private static String setSchemaregexp
= "SET\\s+(CURRENT\\s+SQLID|((CURRENT\\s+)?SCHEMA))\\s+(=?).*";
private static Pattern SETSCHEMA_PATTERN =
Pattern.compile(setSchemaregexp, Pattern.CASE_INSENSITIVE);
// GemStone changes END
/**
* Returns the name of the java.sql interface implemented by this class.
* @return name of java.sql interface
*/
protected String getJdbcStatementInterfaceName() {
return "java.sql.Statement";
}
// Should investigate if it can be optimized.. if we can avoid this parsing..
//
void parseSqlAndSetSqlModes(String sql) throws SqlException {
sqlUpdateMode_ = 0;
String firstToken = getStatementToken(sql);
if (firstToken == null) {
// entire statement was just one or more comments; pass it as a
// query to the server and let the server deal with it.
sqlMode_ = isQuery__;
return;
}
// GemStone changes BEGIN
if (firstToken.equalsIgnoreCase("');
if (idx > 0) {
firstToken = ClientSharedUtils.getStatementToken(sql, idx + 1);
}
}
if (firstToken.equalsIgnoreCase("set")) {
Matcher m = SETSCHEMA_PATTERN.matcher(sql);
if (m.matches()) {
this.connection_.setSchemaSql_ = sql;
}
}
// GemStone changes END
if (firstToken.equalsIgnoreCase("select") || // captures production
// GemStone changes BEGIN
/*(originally) firstToken.equalsIgnoreCase("values")) // captures production */
firstToken.equalsIgnoreCase("values") || // captures production
firstToken.equalsIgnoreCase("explain")) // captures production
// GemStone changes END
{
sqlMode_ = isQuery__;
} else if (firstToken.equalsIgnoreCase("call")) // captures CALL...and ?=CALL...
{
sqlMode_ = isCall__;
} else {
parseUpdateSql(firstToken);
}
}
/**
* Step past any initial non-significant characters to find first
* significant SQL token so we can classify statement.
*
* @return first significant SQL token
* @throws SqlException std exception policy
*/
private String getStatementToken(String sql) throws SqlException {
return ClientSharedUtils.getStatementToken(sql, 0);
}
private void parseUpdateSql(String firstToken) throws SqlException {
sqlMode_ = isUpdate__;
if (firstToken.equalsIgnoreCase("insert")) {
sqlUpdateMode_ = isInsertSql__;
}
if (firstToken.equalsIgnoreCase("delete")) {
sqlUpdateMode_ = isDeleteSql__;
}
if (firstToken.equalsIgnoreCase("update")) {
sqlUpdateMode_ = isUpdateSql__;
}
}
// the sql is assumed to start with CALL... or ?=CALL...
String getProcedureName(String sql) throws SqlException {
java.util.StringTokenizer tokenizer = new java.util.StringTokenizer(sql, "\t\n\r\f= (?");
if (!tokenizer.hasMoreTokens()) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.NO_TOKENS_IN_SQL_TEXT), sql);
}
String firstToken = tokenizer.nextToken();
if (!firstToken.equalsIgnoreCase("call")) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.LANG_INVALID_CALL_STATEMENT));
}
if (!tokenizer.hasMoreTokens()) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.LANG_INVALID_CALL_STATEMENT));
}
return tokenizer.nextToken();
}
// Try to enforce the use of this method later.
public static String upperCaseProcedureName(String procedureName) throws SqlException {
// upper case the parts of a 3-part procedure name unless the part is in a double quotes
// Loop thru every character, if we're in double quotes just echo it,
// if we're not in double quotes, upper case it.
char[] charArray = null;
if (procedureName.indexOf("\"") == -1) {
return procedureName.toUpperCase();
} else {
charArray = procedureName.toCharArray();
boolean inStringLiteral = false;
for (int i = 0; i < charArray.length; i++) {
if (charArray[i] == '"') {
inStringLiteral = !inStringLiteral;
} else if (!inStringLiteral && charArray[i] != '.') {
charArray[i] = Character.toUpperCase(charArray[i]);
}
}
}
return new String(charArray);
}
final void checkForAppropriateSqlMode(int executeType, int sqlMode) throws SqlException {
if (executeType == executeQueryMethod__ && sqlMode == isUpdate__) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.CANT_USE_EXEC_QUERY_FOR_UPDATE));
}
if (executeType == executeUpdateMethod__ && sqlMode == isQuery__) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.LANG_INVALID_CALL_TO_EXECUTE_UPDATE));
}
}
/**
* Checks that the number of result sets returned by the statement
* is consistent with the executed type. executeQuery()
* should return exactly one result set and executeUpdate()
* none. Raises an exception if the result set count does not match the
* execute type.
*
* @param executeType one of executeQueryMethod__,
* executeUpdateMethod__ and executeMethod__
* @exception SqlException if the number of result sets does not
* match the execute type
*/
private void checkResultSetCount(int executeType) throws SqlException {
switch (executeType) {
case executeQueryMethod__:
// We'll just rely on finalizers to close the dangling result sets.
if (resultSetList_ != null && resultSetList_.length > 1) {
throw new
SqlException(agent_.logWriter_,
new ClientMessageId(
SQLState.MULTIPLE_RESULTS_ON_EXECUTE_QUERY),
getJdbcStatementInterfaceName(),
getJdbcStatementInterfaceName());
}
if (resultSet_ == null || resultSetList_.length == 0) {
ClientMessageId messageId =
new ClientMessageId(
SQLState.USE_EXECUTE_UPDATE_WITH_NO_RESULTS);
throw new SqlException(agent_.logWriter_, messageId,
getJdbcStatementInterfaceName(),
getJdbcStatementInterfaceName());
}
break;
case executeUpdateMethod__:
// We'll just rely on finalizers to close the dangling result sets.
if (resultSet_ != null && resultSetList_.length > 0) {
ClientMessageId messageId =
new ClientMessageId(
SQLState.LANG_INVALID_CALL_TO_EXECUTE_UPDATE);
throw new SqlException(agent_.logWriter_, messageId);
}
break;
}
}
/**
* Checks that a stored procedure returns the correct number of
* result sets given its execute type. If the number is incorrect,
* make sure the transaction is rolled back when auto commit is
* enabled.
*
* @param executeType one of executeQueryMethod__,
* executeUpdateMethod__ and executeMethod__
* @exception SqlException if the number of result sets does not
* match the execute type
* @see #checkResultSetCount(int)
*/
protected final void checkForStoredProcResultSetCount(int executeType)
throws SqlException
{
try {
checkResultSetCount(executeType);
} catch (SqlException se) {
if (connection_.autoCommit_) {
connection_.flowRollback();
}
throw se;
}
}
final void checkForClosedStatement() throws SqlException {
// For some odd reason, there was a JVM hotspot error with Sun's 1.4 JDK
// when the code was written like this:
// agent_checkForDeferredExceptions();
// if (!openOnClient_)
// throw new SqlException (agent_.logWriter_, "Invalid operation: statement closed");
//
if ( this.connection_ == null || this.connection_.isClosed() )
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.NO_CURRENT_CONNECTION));
if (!openOnClient_) {
agent_.checkForDeferredExceptions();
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.ALREADY_CLOSED), "Statement");
} else {
agent_.checkForDeferredExceptions();
}
}
// precondition: parseSqlAndSetSqlModes() must be called on the supplied sql string before invoking this method
void checkForInvalidBatchedSql(String sql) throws SqlException {
if (sql == null) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.NULL_SQL_TEXT));
}
if (sqlMode_ != isCall__
&& !(sqlMode_ == isUpdate__
&& (sqlUpdateMode_ == isInsertSql__
|| sqlUpdateMode_ == isDeleteSql__
|| sqlUpdateMode_ == isUpdateSql__
|| sqlUpdateMode_ == 0)))// For any undefined pass thru statement like drop create
{
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.LANG_INVALID_SQL_IN_BATCH), sql);
}
}
// Two open result sets can not have the same cursor name.
protected void checkForDuplicateCursorName() throws SqlException {
if (cursorName_ != null && (connection_.clientCursorNameCache_.
containsKey(cursorName_))) {
throw new SqlException
(agent_.logWriter_,
new ClientMessageId(SQLState.CURSOR_DUPLICATE_NAME),
cursorName_);
}
}
// Set up information to be able to handle cursor names:
// canned or user named (via setCursorName).
protected void setupCursorNameCacheAndMappings() {
if (cursorName_ != null) {
// The user has set a cursor name for this statement.
// This means we must subtitute the
// with the in the pass-thru sql
// string "...where current of "
// whenever the result set produced by this statement
// is referenced in a positioned update/delete statement.
agent_.sectionManager_.mapCursorNameToQuerySection
(cursorName_, section_);
section_.setClientCursorName(cursorName_);
// Update cache to avoid duplicates of user set cursor name.
connection_.clientCursorNameCache_.put(cursorName_,
cursorName_);
} else {
// canned cursor name
agent_.sectionManager_.mapCursorNameToQuerySection
(section_.getServerCursorName(), section_);
}
// If client's cursor name is set, map the client's cursor name to the
// result set, else map the server's cursor name to the result set.
mapCursorNameToResultSet();
}
String[] extractCursorNameFromWhereCurrentOf(String sql) {
String lowerSql = sql.toLowerCase();
int currentIndex = lowerSql.lastIndexOf("current");
if (currentIndex != -1) {
int whereIndex = lowerSql.lastIndexOf("where");
if (whereIndex != -1) {
String[] whereCurrentOf = {"where", "current", "of"};
java.util.StringTokenizer st = new java.util.StringTokenizer(sql.substring(whereIndex));
while (st.hasMoreTokens()) {
if (st.nextToken().equalsIgnoreCase(whereCurrentOf[0]) &&
st.nextToken().equalsIgnoreCase(whereCurrentOf[1]) &&
st.nextToken().equalsIgnoreCase(whereCurrentOf[2])) {
String cursorName = st.nextToken();
String oldCursorName = cursorName;
int originalCursorNameLength = cursorName.length();
int index = sql.lastIndexOf(cursorName);
if (cursorName.charAt(0) == '\"' && cursorName.charAt(cursorName.length() - 1) == '\"') {
cursorName = cursorName.substring(1, cursorName.length() - 1);
} else {
cursorName = cursorName.toUpperCase();
}
// we cannot assume "where current of cursorName" is always the end of the sql string
// with rowset cursors, it can be "where current of cursorName for row X of rowset"
if (sql.length() > index + originalCursorNameLength) {
sql = sql.substring(0, index) + cursorName + sql.substring(index + oldCursorName.length(), sql.length());
} else {
sql = sql.substring(0, index) + cursorName;
}
return new String[]{cursorName, sql}; // delimited name, so just extract the name.
}
}
}
}
return null;
}
// Substitute the client cursor name in the SQL string with the server's cursor name.
// Only called on positioned update statements.
protected String substituteClientCursorNameWithServerCursorName(String sql,
Section section) throws SqlException {
String clientCursorName = section.getClientCursorName();
int index = sql.lastIndexOf(clientCursorName);
if (sql.length() > index + clientCursorName.length()) {
return sql.substring(0, index) + section.getServerCursorNameForPositionedUpdate()
+ sql.substring(index + clientCursorName.length(), sql.length());
} else {
return sql.substring(0, index) + section.getServerCursorNameForPositionedUpdate();
}
}
public ConnectionCallbackInterface getConnectionCallbackInterface() {
return connection_;
}
// This was being called only on positioned update statements. When working
// on DERBY-210, it was found that result sets of all statements (not just
// positioned update statements) get added to the table. So, this is called
// for all statements. Otherwise, this will cause memory leaks when statements
// are not explicitly closed in the application.
void resetCursorNameAndRemoveFromWhereCurrentOfMappings() {
// Remove client/server cursorName -> ResultSet mapping from the hashtable.
// If Statement.close() is called before ResultSet.close(), then statement_.section is null.
if (section_ != null) {
agent_.sectionManager_.removeCursorNameToResultSetMapping(cursorName_,
section_.getServerCursorNameForPositionedUpdate());
// remove resultset mapping for other cursors (other than positioned
// update statements) - DERBY-210
agent_.sectionManager_.removeCursorNameToResultSetMapping(cursorName_,
section_.getServerCursorName());
// Remove client and server cursorName -> QuerySection mapping from the hashtable
// if one exists
agent_.sectionManager_.removeCursorNameToQuerySectionMapping(cursorName_,
section_.getServerCursorNameForPositionedUpdate());
}
// client cursor name will be set to null when it is removed from the
// clientCursorNameCache.
//cursorName_ = null;
}
void mapCursorNameToResultSet() {
if (cursorName_ != null) {
agent_.sectionManager_.mapCursorNameToResultSet(cursorName_, resultSet_);
} else {
agent_.sectionManager_.mapCursorNameToResultSet(section_.getServerCursorName(), resultSet_);
}
}
void parseStorProcReturnedScrollableRowset() throws SqlException {
if (resultSetList_ != null) {
for (int i = 0; i < resultSetList_.length; i++) {
if (resultSetList_[i].scrollable_ && resultSetList_[i].cursor_.dataBufferHasUnprocessedData()) {
resultSetList_[i].parseScrollableRowset();
if (resultSetList_[i].rowCountIsUnknown()) {
resultSetList_[i].getRowCount();
}
}
}
}
}
String escape(String sql) throws SqlException {
String nativeSQL = sql;
nativeSQL = connection_.nativeSQLX(sql);
return nativeSQL;
}
// Called by statement constructor only for jdbc 2 statements with scroll attributes.
// This method is not in the StatementRequest class because it is not building into
// the request buffer directly, it is building into a cache to be written into the request
// buffer at prepare-time.
String cacheCursorAttributesToSendOnPrepare() throws SqlException {
StringBuilder cursorAttributes = new StringBuilder();
if (resultSetType_ == java.sql.ResultSet.TYPE_SCROLL_SENSITIVE) {
// append "SENSITIVE STATIC SCROLL"
cursorAttributes.append(Configuration.cursorAttribute_SensitiveStatic);
} else if (resultSetType_ == java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE) {
// if "insensitve, updatable" cursor is asked, then server sends back error
// and we will pass that error back to the user.
// we will not try to catch any errors/warnings here.
// append "INSENSITIVE SCROLL"
cursorAttributes.append(Configuration.cursorAttribute_Insensitive);
}
// Default is read-only, forward-only. No attribute needs to be sent.
if (resultSetConcurrency_ == java.sql.ResultSet.CONCUR_UPDATABLE) {
cursorAttributes.append(Configuration.cursorAttribute_ForUpdate); // FOR UPDATE
}
if ((resultSetHoldability_ == java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT)) {
cursorAttributes.append(Configuration.cursorAttribute_WithHold); // WITH HOLD
}
return
(cursorAttributes == null || cursorAttributes.toString().equals(""))
? null
: cursorAttributes.toString();
}
void getPreparedStatementForAutoGeneratedKeys() throws SqlException {
if (preparedStatementForAutoGeneratedKeys_ == null) {
String s = "select IDENTITY_VAL_LOCAL() from SYSIBM.SYSDUMMY1";
preparedStatementForAutoGeneratedKeys_ =
connection_.newPreparedStatement_(s,
java.sql.ResultSet.TYPE_FORWARD_ONLY,
java.sql.ResultSet.CONCUR_READ_ONLY,
java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT,
java.sql.Statement.NO_GENERATED_KEYS,
null, null);
// need a special case for Derby, since the attribute has to go through the wire.
// This same special casing for Derby is already in place in method PS.cacheCursorAttributesToSendOnPrepare() as called by prepareStatementX().
// We need to figure how some way to get code reuse here, ie. to consolidate to just one special casing rather than two?
// Maybe just call prepareStatementX() or use some special purpose prepare method like the ones in Connection.
// Something more abstract so that we don't have to special case the WITH HOLD thing twice.
StringBuilder cursorAttributes = new StringBuilder();
cursorAttributes.append(Configuration.cursorAttribute_WithHold);
preparedStatementForAutoGeneratedKeys_.cursorAttributesToSendOnPrepare_ = cursorAttributes.toString();
}
}
void prepareAutoGeneratedKeysStatement() throws SqlException {
getPreparedStatementForAutoGeneratedKeys();
if (!preparedStatementForAutoGeneratedKeys_.openOnServer_) {
preparedStatementForAutoGeneratedKeys_.materialPreparedStatement_.writePrepareDescribeOutput_(preparedStatementForAutoGeneratedKeys_.sql_,
preparedStatementForAutoGeneratedKeys_.section_, false);
}
}
void readPrepareAutoGeneratedKeysStatement() throws SqlException {
if (!preparedStatementForAutoGeneratedKeys_.openOnServer_) {
preparedStatementForAutoGeneratedKeys_.materialPreparedStatement_.readPrepareDescribeOutput_();
}
}
void checkAutoGeneratedKeysParameters() throws SqlException {
if (autoGeneratedKeys_ != java.sql.Statement.NO_GENERATED_KEYS &&
autoGeneratedKeys_ != java.sql.Statement.RETURN_GENERATED_KEYS) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_API_PARAMETER),
new Integer(autoGeneratedKeys_), "autoGeneratedKeys",
"Statement.execute()/executeQuery()");
}
if (sqlUpdateMode_ == isInsertSql__)
{
if (generatedKeysColumnNames_ != null &&
generatedKeysColumnNames_.length > 1) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_COLUMN_ARRAY_LENGTH),
new Integer(generatedKeysColumnNames_.length));
}
if (generatedKeysColumnIndexes_ != null &&
generatedKeysColumnIndexes_.length > 1) {
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.INVALID_COLUMN_ARRAY_LENGTH),
new Integer(generatedKeysColumnIndexes_.length));
}
}
}
public ColumnMetaData getGuessedResultSetMetaData() {
return resultSetMetaData_;
}
public boolean isQueryMode() {
if (this.sqlMode_ == this.isQuery__) {
return true;
} else {
return false;
}
}
public boolean needStatementUUID() {
return (this.statementUUID == null);
}
protected void removeClientCursorNameFromCache() {
if (cursorName_ != null &&
connection_.clientCursorNameCache_.containsKey(cursorName_)) {
connection_.clientCursorNameCache_.remove(cursorName_);
}
}
/**
* Convenience method for resultSetCommitting(ResultSet, boolean)
*
* @see Statement#resultSetCommitting(ResultSet, boolean)
* @param closingRS The ResultSet to be closed
* @throws SqlException
*/
public void resultSetCommitting(ResultSet closingRS) throws SqlException {
resultSetCommitting(closingRS, false);
}
/**
* Method that checks to see if any other ResultSets are open. If not
* proceeds with the autocommit.
*
* @param closingRS The ResultSet to be closed
* @param writeChain A Boolean indicating whether this method
* is part of a chain of write from client to Server
* @throws SqlException
*/
public boolean resultSetCommitting(ResultSet closingRS, boolean writeChain) throws SqlException {
// If the Connection is not in auto commit then this statement completion
// cannot cause a commit.
if (!connection_.autoCommit_ || closingRS.autoCommitted_)
return false;
// If we have multiple results, see if there is another result set open.
// If so, then no commit. The last result set to close will close the statement.
if (resultSetList_ != null) {
for (int i = 0; i < resultSetList_.length; i++) {
ResultSet crs = resultSetList_[i];
if (crs == null)
continue;
if (!crs.openOnClient_)
continue;
if (crs == closingRS)
continue;
// at least one still open so no commit now.
return false;
}
}
if (writeChain) {
connection_.writeAutoCommit();
return true;
} else {
if (connection_.flowAutoCommit()) {
markAutoCommitted();
return true;
}
return false;
}
}
/**
* Mark all ResultSets associated with this statement as auto-committed.
*/
public void markAutoCommitted() {
if (resultSetList_ != null) {
for (int i = 0; i < resultSetList_.length; i++)
if (resultSetList_[i] != null) {
resultSetList_[i].markAutoCommitted();
}
} else if (resultSet_ != null) {
resultSet_.markAutoCommitted();
}
}
protected SQLException jdbc3FeatureNotSupported(boolean checkStatement)
throws SQLException
{
try
{
if ( checkStatement )
checkForClosedStatement();
throw new SqlException(agent_.logWriter_,
new ClientMessageId(SQLState.JDBC_METHOD_NOT_IMPLEMENTED));
}
catch ( SqlException se )
{
throw se.getSQLException(agent_ /* GemStoneAddition */);
}
}
protected SQLException jdbc3FeatureNotSupported() throws SQLException
{
return jdbc3FeatureNotSupported(true);
}
// GemStone changes BEGIN
public boolean isCallMode() {
return this.sqlMode_ == isCall__;
}
/**
* prepare added to Statement to allow easy invocation for PreparedStatement
* from within flow* classes during failover retry from within base Statement
* methods
*/
void preparePostFailover() throws SqlException {
// nothing for Statement
}
public Section getSection() {
return this.section_;
}
public void completeStatementIDRead(String statementUUID) {
this.statementUUID = statementUUID;
}
// GemStone changes END
}