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Microsoft JDBC Driver for SQL Server.
/*
* Microsoft JDBC Driver for SQL Server Copyright(c) Microsoft Corporation All rights reserved. This program is made
* available under the terms of the MIT License. See the LICENSE file in the project root for more information.
*/
package com.microsoft.sqlserver.jdbc;
import java.io.Serializable;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverPropertyInfo;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.RowIdLifetime;
import java.sql.SQLException;
import java.sql.SQLTimeoutException;
import java.text.MessageFormat;
import java.util.EnumMap;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.logging.Level;
/**
* Provides the JDBC database meta data.
*
* The API javadoc for JDBC API methods that this class implements are not repeated here. Please see Sun's JDBC API
* interfaces javadoc for those details.
*/
@SuppressWarnings("unused")
public final class SQLServerDatabaseMetaData implements java.sql.DatabaseMetaData, Serializable {
/**
* Always update serialVersionUID when prompted.
*/
private static final long serialVersionUID = -116977606028371577L;
/** connection */
private SQLServerConnection connection;
static final String URL_PREFIX = "jdbc:sqlserver://";
static final private java.util.logging.Logger logger = java.util.logging.Logger
.getLogger("com.microsoft.sqlserver.jdbc.internals.SQLServerDatabaseMetaData");
static final private java.util.logging.Logger loggerExternal = java.util.logging.Logger
.getLogger("com.microsoft.sqlserver.jdbc.internals.DatabaseMetaData");
/**
* Unique id generator for each instance (used for logging).
*/
static private final AtomicInteger baseID = new AtomicInteger(0);
/** trace ID */
final private String traceID;
// varbinary(max) https://msdn.microsoft.com/en-us/library/ms143432.aspx
static final int MAXLOBSIZE = 2147483647;
// uniqueidentifier https://msdn.microsoft.com/en-us/library/ms187942.aspx
static final int UNIQUEIDENTIFIER_SIZE = 36;
enum CallableHandles {
SP_COLUMNS("{ call sp_columns(?, ?, ?, ?, ?) }", "{ call sp_columns_100(?, ?, ?, ?, ?, ?) }"),
SP_COLUMN_PRIVILEGES("{ call sp_column_privileges(?, ?, ?, ?)}", "{ call sp_column_privileges(?, ?, ?, ?)}"),
SP_TABLES("{ call sp_tables(?, ?, ?, ?) }", "{ call sp_tables(?, ?, ?, ?) }"),
SP_SPECIAL_COLUMNS("{ call sp_special_columns (?, ?, ?, ?, ?, ?, ?)}", "{ call sp_special_columns_100 (?, ?, ?, ?, ?, ?, ?)}"),
SP_FKEYS("{ call sp_fkeys (?, ?, ?, ? , ? ,?)}", "{ call sp_fkeys (?, ?, ?, ? , ? ,?)}"),
SP_STATISTICS("{ call sp_statistics(?,?,?,?,?, ?) }", "{ call sp_statistics_100(?,?,?,?,?, ?) }"),
SP_SPROC_COLUMNS("{ call sp_sproc_columns(?, ?, ?,?,?) }", "{ call sp_sproc_columns_100(?, ?, ?,?,?) }"),
SP_STORED_PROCEDURES("{call sp_stored_procedures(?, ?, ?) }", "{call sp_stored_procedures(?, ?, ?) }"),
SP_TABLE_PRIVILEGES("{call sp_table_privileges(?,?,?) }", "{call sp_table_privileges(?,?,?) }"),
SP_PKEYS("{ call sp_pkeys (?, ?, ?)}", "{ call sp_pkeys (?, ?, ?)}");
// stored procs before Katmai ie SS10
private final String preKatProc;
// procs on or after katmai
private final String katProc;
private CallableHandles(String name, String katName) {
this.preKatProc = name;
this.katProc = katName;
}
CallableStatement prepare(SQLServerConnection conn) throws SQLServerException {
return conn.prepareCall(conn.isKatmaiOrLater() ? katProc : preKatProc);
}
}
final class HandleAssociation {
Map statementMap;
boolean nullCatalog = false;
CallableStatement stmt;
HandleAssociation() {
if (null == statementMap) {
statementMap = new HashMap<>();
}
}
final void addToMap(String databaseName, CallableStatement stmt) {
if (null != databaseName) {
nullCatalog = false;
statementMap.put(databaseName, stmt);
} else {
nullCatalog = true;
this.stmt = stmt;
}
}
final CallableStatement getMappedStatement(String databaseName) {
if (null != databaseName) {
if (null != statementMap && statementMap.containsKey(databaseName)) {
return statementMap.get(databaseName);
}
return null;
} else {
return stmt;
}
}
}
/** handle map */
EnumMap handleMap = new EnumMap<>(CallableHandles.class);
// Returns unique id for each instance.
private static int nextInstanceID() {
return baseID.incrementAndGet();
}
/**
* Provides a helper function to provide an ID string suitable for tracing.
*
* @return traceID string
*/
final public String toString() {
return traceID;
}
/**
* Constructs a SQLServerDatabaseMetaData database meta data
*
* @param con
* the connection
*/
public SQLServerDatabaseMetaData(SQLServerConnection con) {
traceID = " SQLServerDatabaseMetaData:" + nextInstanceID();
connection = con;
if (logger.isLoggable(java.util.logging.Level.FINE)) {
logger.fine(toString() + " created by (" + connection.toString() + ")");
}
}
@Override
public boolean isWrapperFor(Class iface) throws SQLException {
return iface.isInstance(this);
}
@Override
public T unwrap(Class iface) throws SQLException {
T t;
try {
t = iface.cast(this);
} catch (ClassCastException e) {
throw new SQLServerException(e.getMessage(), e);
}
return t;
}
private void checkClosed() throws SQLServerException {
if (connection.isClosed()) {
SQLServerException.makeFromDriverError(null, null, SQLServerException.getErrString("R_connectionIsClosed"),
SQLServerException.EXCEPTION_XOPEN_CONNECTION_DOES_NOT_EXIST, false);
}
}
private static final String ASC_OR_DESC = "ASC_OR_DESC";
private static final String BUFFER_LENGTH = "BUFFER_LENGTH";
private static final String CARDINALITY = "CARDINALITY";
private static final String CHAR_OCTET_LENGTH = "CHAR_OCTET_LENGTH";
private static final String COLUMN_DEF = "COLUMN_DEF";
private static final String COLUMN_NAME = "COLUMN_NAME";
private static final String COLUMN_SIZE = "COLUMN_SIZE";
private static final String COLUMN_TYPE = "COLUMN_TYPE";
private static final String DATA_TYPE = "DATA_TYPE";
private static final String DECIMAL_DIGITS = "DECIMAL_DIGITS";
private static final String DEFERRABILITY = "DEFERRABILITY";
private static final String DELETE_RULE = "DELETE_RULE";
private static final String FILTER_CONDITION = "FILTER_CONDITION";
private static final String FK_NAME = "FK_NAME";
private static final String FKCOLUMN_NAME = "FKCOLUMN_NAME";
private static final String FKTABLE_CAT = "FKTABLE_CAT";
private static final String FKTABLE_NAME = "FKTABLE_NAME";
private static final String FKTABLE_SCHEM = "FKTABLE_SCHEM";
private static final String GRANTEE = "GRANTEE";
private static final String GRANTOR = "GRANTOR";
private static final String INDEX_NAME = "INDEX_NAME";
private static final String INDEX_QUALIFIER = "INDEX_QUALIFIER";
private static final String IS_GRANTABLE = "IS_GRANTABLE";
private static final String IS_NULLABLE = "IS_NULLABLE";
private static final String KEY_SEQ = "KEY_SEQ";
private static final String LENGTH = "LENGTH";
private static final String NON_UNIQUE = "NON_UNIQUE";
private static final String NULLABLE = "NULLABLE";
private static final String NUM_INPUT_PARAMS = "NUM_INPUT_PARAMS";
private static final String NUM_OUTPUT_PARAMS = "NUM_OUTPUT_PARAMS";
private static final String NUM_PREC_RADIX = "NUM_PREC_RADIX";
private static final String NUM_RESULT_SETS = "NUM_RESULT_SETS";
private static final String ORDINAL_POSITION = "ORDINAL_POSITION";
private static final String PAGES = "PAGES";
private static final String PK_NAME = "PK_NAME";
private static final String PKCOLUMN_NAME = "PKCOLUMN_NAME";
private static final String PKTABLE_CAT = "PKTABLE_CAT";
private static final String PKTABLE_NAME = "PKTABLE_NAME";
private static final String PKTABLE_SCHEM = "PKTABLE_SCHEM";
private static final String PRECISION = "PRECISION";
private static final String PRIVILEGE = "PRIVILEGE";
private static final String PROCEDURE_CAT = "PROCEDURE_CAT";
private static final String PROCEDURE_NAME = "PROCEDURE_NAME";
private static final String PROCEDURE_SCHEM = "PROCEDURE_SCHEM";
private static final String PROCEDURE_TYPE = "PROCEDURE_TYPE";
private static final String PSEUDO_COLUMN = "PSEUDO_COLUMN";
private static final String RADIX = "RADIX";
private static final String REMARKS = "REMARKS";
private static final String SCALE = "SCALE";
private static final String SCOPE = "SCOPE";
private static final String SCOPE_CATALOG = "SCOPE_CATALOG";
private static final String SCOPE_SCHEMA = "SCOPE_SCHEMA";
private static final String SCOPE_TABLE = "SCOPE_TABLE";
private static final String SOURCE_DATA_TYPE = "SOURCE_DATA_TYPE";
private static final String SQL_DATA_TYPE = "SQL_DATA_TYPE";
private static final String SQL_DATETIME_SUB = "SQL_DATETIME_SUB";
private static final String TABLE_CAT = "TABLE_CAT";
private static final String TABLE_NAME = "TABLE_NAME";
private static final String TABLE_SCHEM = "TABLE_SCHEM";
private static final String TABLE_TYPE = "TABLE_TYPE";
private static final String TYPE = "TYPE";
private static final String TYPE_NAME = "TYPE_NAME";
private static final String UPDATE_RULE = "UPDATE_RULE";
private static final String FUNCTION_CAT = "FUNCTION_CAT";
private static final String FUNCTION_NAME = "FUNCTION_NAME";
private static final String FUNCTION_SCHEM = "FUNCTION_SCHEM";
private static final String FUNCTION_TYPE = "FUNCTION_TYPE";
private static final String SS_IS_SPARSE = "SS_IS_SPARSE";
private static final String SS_IS_COLUMN_SET = "SS_IS_COLUMN_SET";
private static final String SS_UDT_CATALOG_NAME = "SS_UDT_CATALOG_NAME";
private static final String SS_UDT_SCHEMA_NAME = "SS_UDT_SCHEMA_NAME";
private static final String SS_UDT_ASSEMBLY_TYPE_NAME = "SS_UDT_ASSEMBLY_TYPE_NAME";
private static final String SS_XML_SCHEMACOLLECTION_CATALOG_NAME = "SS_XML_SCHEMACOLLECTION_CATALOG_NAME";
private static final String SS_XML_SCHEMACOLLECTION_SCHEMA_NAME = "SS_XML_SCHEMACOLLECTION_SCHEMA_NAME";
private static final String SS_XML_SCHEMACOLLECTION_NAME = "SS_XML_SCHEMACOLLECTION_NAME";
private static final String IS_GENERATEDCOLUMN = "IS_GENERATEDCOLUMN";
private static final String IS_AUTOINCREMENT = "IS_AUTOINCREMENT";
private static final String ACTIVITY_ID = " ActivityId: ";
private static final String SQL_KEYWORDS = createSqlKeyWords();
// Use LinkedHashMap to force retrieve elements in order they were inserted
/** getColumns columns */
private LinkedHashMap getColumnsDWColumns = null;
/** getImportedKeys columns */
private volatile LinkedHashMap getImportedKeysDWColumns;
private static final Lock LOCK = new ReentrantLock();
/**
* Returns the result from a simple query. This is to be used only for internal queries without any user input.
*
* @param catalog
* catalog the query to be made in
* @param query
* to execute
* @return Resultset from the execution
* @throws SQLTimeoutException
*/
private SQLServerResultSet getResultSetFromInternalQueries(String catalog, String query) throws SQLException {
checkClosed();
String orgCat = null;
orgCat = switchCatalogs(catalog);
SQLServerResultSet rs = null;
try {
SQLServerStatement statement = (SQLServerStatement) connection.createStatement();
statement.closeOnCompletion();
rs = statement.executeQueryInternal(query);
} finally {
if (null != orgCat) {
connection.setCatalog(orgCat);
}
}
return rs;
}
/**
* Returns the CallableStatement handle. Note we pool the handles per object.
*/
private CallableStatement getCallableStatementHandle(CallableHandles request,
String catalog) throws SQLServerException {
CallableStatement cs = null;
HandleAssociation hassoc = handleMap.get(request);
try {
if (null == hassoc) {
cs = request.prepare(connection);
hassoc = new HandleAssociation();
hassoc.addToMap(catalog, cs);
} else { // hassoc != null
cs = hassoc.getMappedStatement(catalog);
// No Cached Statement yet
if (null == cs || cs.isClosed()) {
cs = request.prepare(connection);
hassoc.addToMap(catalog, cs);
}
}
handleMap.put(request, hassoc);
} catch (SQLException e) {
SQLServerException.makeFromDriverError(connection, cs, e.toString(), null, false);
}
return cs;
}
/**
* Returns the result from the stored procedure call.
*
* @param catalog
* catalog the query to be made in
* @param procedure
* to execute
* @param arguments
* for the stored procedure
* @return Resultset from the execution
* @throws SQLTimeoutException
*/
private SQLServerResultSet getResultSetFromStoredProc(String catalog, CallableHandles procedure,
String[] arguments) throws SQLServerException, SQLTimeoutException {
checkClosed();
assert null != arguments;
String orgCat = null;
orgCat = switchCatalogs(catalog);
SQLServerResultSet rs = null;
try {
SQLServerCallableStatement call = (SQLServerCallableStatement) getCallableStatementHandle(procedure,
catalog);
if (call != null) {
for (int i = 1; i <= arguments.length; i++) {
// note individual arguments can be null.
call.setString(i, arguments[i - 1]);
}
rs = (SQLServerResultSet) call.executeQueryInternal();
}
} finally {
if (null != orgCat) {
connection.setCatalog(orgCat);
}
}
return rs;
}
private SQLServerResultSet getResultSetWithProvidedColumnNames(String catalog, CallableHandles procedure,
String[] arguments, String[] columnNames) throws SQLServerException, SQLTimeoutException {
// Execute the query
SQLServerResultSet rs = getResultSetFromStoredProc(catalog, procedure, arguments);
// Rename the columns
if (null != rs) {
for (int i = 0; i < columnNames.length; i++)
rs.setColumnName(1 + i, columnNames[i]);
}
return rs;
}
/**
* Switches the database catalogs.
*
* @param catalog
* the new catalog
* @throws SQLServerException
* @return the old catalog
*/
private String switchCatalogs(String catalog) throws SQLServerException {
if (null == catalog)
return null;
String sCurr = null;
sCurr = connection.getCatalog().trim();
String sNew = catalog.trim();
if (sCurr.equals(sNew))
return null;
connection.setCatalog(sNew);
if (null == sCurr || sCurr.length() == 0)
return null;
return sCurr;
}
/* -------------- JDBC Interface API starts here ---------------- */
@Override
public boolean allProceduresAreCallable() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean allTablesAreSelectable() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean autoCommitFailureClosesAllResultSets() throws SQLException {
checkClosed();
return false;
}
@Override
public boolean dataDefinitionCausesTransactionCommit() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean dataDefinitionIgnoredInTransactions() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean doesMaxRowSizeIncludeBlobs() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean generatedKeyAlwaysReturned() throws SQLException {
checkClosed();
// driver supports retrieving generated keys
return true;
}
@Override
public long getMaxLogicalLobSize() throws SQLException {
checkClosed();
return MAXLOBSIZE;
}
@Override
public boolean supportsRefCursors() throws SQLException {
checkClosed();
return false;
}
@Override
public boolean supportsSharding() throws SQLException {
if (!DriverJDBCVersion.checkSupportsJDBC43()) {
throw new UnsupportedOperationException(SQLServerException.getErrString("R_notSupported"));
}
checkClosed();
return false;
}
@Override
public java.sql.ResultSet getCatalogs() throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
// Return the original case instead of CAPS.removed Upper().
// Need to match case of connection.getCatalog
String s = "SELECT name AS TABLE_CAT FROM sys.databases order by name";
return getResultSetFromInternalQueries(null, s);
}
@Override
public String getCatalogSeparator() throws SQLServerException {
checkClosed();
return ".";
}
@Override
public String getCatalogTerm() throws SQLServerException {
checkClosed();
return "database";
}
private static final String[] getColumnPrivilegesColumnNames = { /* 1 */ TABLE_CAT, /* 2 */ TABLE_SCHEM,
/* 3 */ TABLE_NAME, /* 4 */ COLUMN_NAME, /* 5 */ GRANTOR, /* 6 */ GRANTEE, /* 7 */ PRIVILEGE,
/* 8 */ IS_GRANTABLE};
@Override
public java.sql.ResultSet getColumnPrivileges(String catalog, String schema, String table,
String col) throws SQLServerException, SQLTimeoutException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
// column_privileges supports columns being escaped.
col = escapeIDName(col);
/*
* sp_column_privileges [ @table_name = ] 'table_name' [ , [ @table_owner = ] 'table_owner' ] [ ,
* [ @table_qualifier = ] 'table_qualifier' ] [ , [ @column_name = ] 'column' ]
*/
String[] arguments = new String[4];
arguments[0] = table;
arguments[1] = schema;
arguments[2] = catalog;
arguments[3] = col;
return getResultSetWithProvidedColumnNames(catalog, CallableHandles.SP_COLUMN_PRIVILEGES, arguments,
getColumnPrivilegesColumnNames);
}
private static final String[] getTablesColumnNames = { /* 1 */ TABLE_CAT, /* 2 */ TABLE_SCHEM, /* 3 */ TABLE_NAME,
/* 4 */ TABLE_TYPE, /* 5 */ REMARKS};
@Override
public java.sql.ResultSet getTables(String catalog, String schema, String table,
String[] types) throws SQLServerException, SQLTimeoutException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
// sp_tables supports table name and owner ie schema escaped.
table = escapeIDName(table);
schema = escapeIDName(schema);
/*
* sp_tables [ [ @table_name = ] 'name' ] [ , [ @table_owner = ] 'owner' ] [ , [ @table_qualifier = ]
* 'qualifier' ] [ , [ @table_type = ] "type" ]
*/
String[] arguments = new String[4];
arguments[0] = table;
arguments[1] = schema;
arguments[2] = catalog;
if (null != types) {
final StringBuilder tableTypes = new StringBuilder("'");
for (int i = 0; i < types.length; i++) {
if (i > 0)
tableTypes.append(",");
tableTypes.append("''").append(types[i]).append("''");
}
tableTypes.append("'");
arguments[3] = tableTypes.toString();
}
return getResultSetWithProvidedColumnNames(catalog, CallableHandles.SP_TABLES, arguments, getTablesColumnNames);
}
static final char LEFT_BRACKET = '[';
static final char RIGHT_BRACKET = ']';
static final char ESCAPE = '\\';
static final char PERCENT = '%';
static final char UNDERSCORE = '_';
static final char[] DOUBLE_RIGHT_BRACKET = {']', ']'};
/**
* Accepts a SQL identifier (such as a column name or table name) and escapes the identifier so sql 92 wild card
* characters can be escaped properly to be passed to functions like sp_columns or sp_tables. Assumes that the
* incoming identifier is un-escaped.
*
* @inID input identifier to escape.
* @return the escaped value.
*/
private static String escapeIDName(String inID) {
if (null == inID)
return inID;
// SQL bracket escaping rules.
// See Using Wildcard Characters As Literals in SQL BOL
//
// 5\% -> '5[%]'
// \_n -> '[_]n'
// \[ -> '[ [ ]'
// \] -> ']'
// \\ -> \
// \x -> \x where x is any char other than the ones above.
char ch;
// Add 2 extra chars wild guess thinking at least one escape.
StringBuilder outID = new StringBuilder(inID.length() + 2);
for (int i = 0; i < inID.length(); i++) {
ch = inID.charAt(i);
if (ESCAPE == ch && (++i < inID.length())) {
ch = inID.charAt(i);
switch (ch) {
case PERCENT:
case UNDERSCORE:
case LEFT_BRACKET:
outID.append(LEFT_BRACKET);
outID.append(ch);
outID.append(RIGHT_BRACKET);
break;
case RIGHT_BRACKET:
case ESCAPE:
outID.append(ch);
break;
default:
outID.append(ESCAPE);
outID.append(ch);
}
} else {
// no escape just copy
outID.append(ch);
}
}
return outID.toString();
}
@Override
public java.sql.ResultSet getColumns(String catalog, String schema, String table, String col) throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
String originalCatalog = switchCatalogs(catalog);
if (!this.connection.isAzureDW()) {
String spColumnsSql = "DECLARE @mssqljdbc_temp_sp_columns_result TABLE(TABLE_QUALIFIER SYSNAME, TABLE_OWNER SYSNAME,"
+ "TABLE_NAME SYSNAME, COLUMN_NAME SYSNAME, DATA_TYPE SMALLINT, TYPE_NAME SYSNAME, PRECISION INT,"
+ "LENGTH INT, SCALE SMALLINT, RADIX SMALLINT, NULLABLE SMALLINT, REMARKS VARCHAR(254), COLUMN_DEF NVARCHAR(4000),"
+ "SQL_DATA_TYPE SMALLINT, SQL_DATETIME_SUB SMALLINT, CHAR_OCTET_LENGTH INT, ORDINAL_POSITION INT,"
+ "IS_NULLABLE VARCHAR(254), SS_IS_SPARSE SMALLINT, SS_IS_COLUMN_SET SMALLINT, SS_IS_COMPUTED SMALLINT,"
+ "SS_IS_IDENTITY SMALLINT, SS_UDT_CATALOG_NAME NVARCHAR(128), SS_UDT_SCHEMA_NAME NVARCHAR(128),"
+ "SS_UDT_ASSEMBLY_TYPE_NAME NVARCHAR(max), SS_XML_SCHEMACOLLECTION_CATALOG_NAME NVARCHAR(128),"
+ "SS_XML_SCHEMACOLLECTION_SCHEMA_NAME NVARCHAR(128), SS_XML_SCHEMACOLLECTION_NAME NVARCHAR(128),"
+ "SS_DATA_TYPE TINYINT);"
+ "INSERT INTO @mssqljdbc_temp_sp_columns_result EXEC sp_columns_100 ?,?,?,?,?,?;"
+ "SELECT TABLE_QUALIFIER AS TABLE_CAT, TABLE_OWNER AS TABLE_SCHEM, TABLE_NAME, COLUMN_NAME, DATA_TYPE,"
+ "TYPE_NAME, PRECISION AS COLUMN_SIZE, LENGTH AS BUFFER_LENGTH, SCALE AS DECIMAL_DIGITS, RADIX AS NUM_PREC_RADIX,"
+ "NULLABLE, REMARKS, COLUMN_DEF, SQL_DATA_TYPE, SQL_DATETIME_SUB, CHAR_OCTET_LENGTH, ORDINAL_POSITION, IS_NULLABLE,"
+ "NULL AS SCOPE_CATALOG, NULL AS SCOPE_SCHEMA, NULL AS SCOPE_TABLE, SS_DATA_TYPE AS SOURCE_DATA_TYPE,"
+ "CASE SS_IS_IDENTITY WHEN 0 THEN 'NO' WHEN 1 THEN 'YES' WHEN '' THEN '' END AS IS_AUTOINCREMENT,"
+ "CASE SS_IS_COMPUTED WHEN 0 THEN 'NO' WHEN 1 THEN 'YES' WHEN '' THEN '' END AS IS_GENERATEDCOLUMN, "
+ "SS_IS_SPARSE, SS_IS_COLUMN_SET, SS_UDT_CATALOG_NAME, SS_UDT_SCHEMA_NAME, SS_UDT_ASSEMBLY_TYPE_NAME,"
+ "SS_XML_SCHEMACOLLECTION_CATALOG_NAME, SS_XML_SCHEMACOLLECTION_SCHEMA_NAME, SS_XML_SCHEMACOLLECTION_NAME "
+ "FROM @mssqljdbc_temp_sp_columns_result ORDER BY TABLE_CAT, TABLE_SCHEM, TABLE_NAME, ORDINAL_POSITION;";
SQLServerResultSet rs = null;
PreparedStatement pstmt = (SQLServerPreparedStatement) this.connection.prepareStatement(spColumnsSql);
pstmt.closeOnCompletion();
try {
pstmt.setString(1, (null != table && !table.isEmpty()) ? escapeIDName(table) : "%");
pstmt.setString(2, (null != schema && !schema.isEmpty()) ? escapeIDName(schema) : "%");
pstmt.setString(3, (null != catalog && !catalog.isEmpty()) ? catalog : this.connection.getCatalog());
pstmt.setString(4, (null != col && !col.isEmpty()) ? escapeIDName(col) : "%");
pstmt.setInt(5, 2);// show sparse columns
pstmt.setInt(6, 3);// odbc version
rs = (SQLServerResultSet) pstmt.executeQuery();
rs.getColumn(5).setFilter(new DataTypeFilter());
rs.getColumn(7).setFilter(new ZeroFixupFilter());
rs.getColumn(8).setFilter(new ZeroFixupFilter());
rs.getColumn(16).setFilter(new ZeroFixupFilter());
} catch (SQLException e) {
if (null != pstmt) {
try {
pstmt.close();
} catch (SQLServerException ignore) {
if (loggerExternal.isLoggable(Level.FINER)) {
loggerExternal.finer(
"getColumns() threw an exception when attempting to close PreparedStatement");
}
}
}
throw e;
} finally {
if (null != originalCatalog) {
connection.setCatalog(originalCatalog);
}
}
return rs;
} else {
/**
* Can't actually switchCatalogs on Azure DW. This is here to keep consistency in behavior with SQL Azure DB
* when user provides a different catalog than the one they're currently connected to. Will throw exception
* when it's different and do nothing if it's the same/null.
*/
LOCK.lock();
try {
if (null == getColumnsDWColumns) {
getColumnsDWColumns = new LinkedHashMap<>();
getColumnsDWColumns.put(1, TABLE_CAT);
getColumnsDWColumns.put(2, TABLE_SCHEM);
getColumnsDWColumns.put(3, TABLE_NAME);
getColumnsDWColumns.put(4, COLUMN_NAME);
getColumnsDWColumns.put(5, DATA_TYPE);
getColumnsDWColumns.put(6, TYPE_NAME);
getColumnsDWColumns.put(7, COLUMN_SIZE);
getColumnsDWColumns.put(8, BUFFER_LENGTH);
getColumnsDWColumns.put(9, DECIMAL_DIGITS);
getColumnsDWColumns.put(10, NUM_PREC_RADIX);
getColumnsDWColumns.put(11, NULLABLE);
getColumnsDWColumns.put(12, REMARKS);
getColumnsDWColumns.put(13, COLUMN_DEF);
getColumnsDWColumns.put(14, SQL_DATA_TYPE);
getColumnsDWColumns.put(15, SQL_DATETIME_SUB);
getColumnsDWColumns.put(16, CHAR_OCTET_LENGTH);
getColumnsDWColumns.put(17, ORDINAL_POSITION);
getColumnsDWColumns.put(18, IS_NULLABLE);
/*
* Use negative value keys to indicate that this column doesn't exist in SQL Server and should just
* be queried as 'NULL'
*/
getColumnsDWColumns.put(-1, SCOPE_CATALOG);
getColumnsDWColumns.put(-2, SCOPE_SCHEMA);
getColumnsDWColumns.put(-3, SCOPE_TABLE);
getColumnsDWColumns.put(29, SOURCE_DATA_TYPE);
getColumnsDWColumns.put(22, IS_AUTOINCREMENT);
getColumnsDWColumns.put(21, IS_GENERATEDCOLUMN);
getColumnsDWColumns.put(19, SS_IS_SPARSE);
getColumnsDWColumns.put(20, SS_IS_COLUMN_SET);
getColumnsDWColumns.put(23, SS_UDT_CATALOG_NAME);
getColumnsDWColumns.put(24, SS_UDT_SCHEMA_NAME);
getColumnsDWColumns.put(25, SS_UDT_ASSEMBLY_TYPE_NAME);
getColumnsDWColumns.put(26, SS_XML_SCHEMACOLLECTION_CATALOG_NAME);
getColumnsDWColumns.put(27, SS_XML_SCHEMACOLLECTION_SCHEMA_NAME);
getColumnsDWColumns.put(28, SS_XML_SCHEMACOLLECTION_NAME);
}
} finally {
LOCK.unlock();
}
try (PreparedStatement storedProcPstmt = this.connection
.prepareStatement("EXEC sp_columns_100 ?,?,?,?,?,?;")) {
storedProcPstmt.setString(1, (null != table && !table.isEmpty()) ? escapeIDName(table) : "%");
storedProcPstmt.setString(2, (null != schema && !schema.isEmpty()) ? escapeIDName(schema) : "%");
storedProcPstmt.setString(3,
(null != catalog && !catalog.isEmpty()) ? catalog : this.connection.getCatalog());
storedProcPstmt.setString(4, (null != col && !col.isEmpty()) ? escapeIDName(col) : "%");
storedProcPstmt.setInt(5, 2);// show sparse columns
storedProcPstmt.setInt(6, 3);// odbc version
SQLServerResultSet userRs = null;
PreparedStatement resultPstmt = null;
try (ResultSet rs = storedProcPstmt.executeQuery()) {
StringBuilder azureDwSelectBuilder = new StringBuilder();
boolean isFirstRow = true; // less expensive than continuously checking isFirst()
while (rs.next()) {
if (!isFirstRow) {
azureDwSelectBuilder.append(" UNION ALL ");
}
azureDwSelectBuilder.append(generateAzureDWSelect(rs, getColumnsDWColumns));
isFirstRow = false;
}
if (0 == azureDwSelectBuilder.length()) {
azureDwSelectBuilder.append(generateAzureDWEmptyRS(getColumnsDWColumns));
} else {
azureDwSelectBuilder.append(" ORDER BY TABLE_CAT, TABLE_SCHEM, TABLE_NAME, ORDINAL_POSITION ");
}
resultPstmt = (SQLServerPreparedStatement) this.connection
.prepareStatement(azureDwSelectBuilder.toString());
userRs = (SQLServerResultSet) resultPstmt.executeQuery();
resultPstmt.closeOnCompletion();
userRs.getColumn(5).setFilter(new DataTypeFilter());
userRs.getColumn(7).setFilter(new ZeroFixupFilter());
userRs.getColumn(8).setFilter(new ZeroFixupFilter());
userRs.getColumn(16).setFilter(new ZeroFixupFilter());
} catch (SQLException e) {
if (null != resultPstmt) {
try {
resultPstmt.close();
} catch (SQLServerException ignore) {
if (loggerExternal.isLoggable(Level.FINER)) {
loggerExternal.finer(
"getColumns() threw an exception when attempting to close PreparedStatement");
}
}
}
throw e;
}
return userRs;
}
}
}
private String generateAzureDWSelect(ResultSet rs, Map columns) throws SQLException {
StringBuilder sb = new StringBuilder("SELECT ");
for (Entry p : columns.entrySet()) {
if (p.getKey() < 0) {
sb.append("NULL");
} else {
Object o = rs.getObject(p.getKey());
if (null == o) {
sb.append("NULL");
} else if (o instanceof Number) {
if (IS_AUTOINCREMENT.equalsIgnoreCase(p.getValue())
|| IS_GENERATEDCOLUMN.equalsIgnoreCase(p.getValue())) {
sb.append("'").append(Util.escapeSingleQuotes(Util.zeroOneToYesNo(((Number) o).intValue())))
.append("'");
} else {
sb.append(o.toString());
}
} else {
sb.append("'").append(Util.escapeSingleQuotes(o.toString())).append("'");
}
}
sb.append(" AS ").append(p.getValue()).append(",");
}
sb.setLength(sb.length() - 1);
return sb.toString();
}
private String generateAzureDWEmptyRS(Map columns) {
StringBuilder sb = new StringBuilder("SELECT TOP 0 ");
for (Entry p : columns.entrySet()) {
sb.append("NULL AS ").append(p.getValue()).append(",");
}
sb.setLength(sb.length() - 1);
return sb.toString();
}
private static final String[] getFunctionsColumnNames = { /* 1 */ FUNCTION_CAT, /* 2 */ FUNCTION_SCHEM,
/* 3 */ FUNCTION_NAME, /* 4 */ NUM_INPUT_PARAMS, /* 5 */ NUM_OUTPUT_PARAMS, /* 6 */ NUM_RESULT_SETS,
/* 7 */ REMARKS, /* 8 */ FUNCTION_TYPE};
@Override
public java.sql.ResultSet getFunctions(String catalog, String schemaPattern,
String functionNamePattern) throws SQLException {
checkClosed();
/*
* sp_stored_procedures [ [ @sp_name = ] 'name' ] [ , [ @sp_owner = ] 'schema'] [ , [ @sp_qualifier = ]
* 'qualifier' ] [ , [@fUsePattern = ] 'fUsePattern' ]
*/ // use default ie use pattern matching.
// catalog cannot be empty in sql server
if (null != catalog && catalog.length() == 0) {
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_invalidArgument"));
Object[] msgArgs = {"catalog"};
SQLServerException.makeFromDriverError(null, null, form.format(msgArgs), null, false);
}
String[] arguments = new String[3];
arguments[0] = escapeIDName(functionNamePattern);
arguments[1] = escapeIDName(schemaPattern);
arguments[2] = catalog;
return getResultSetWithProvidedColumnNames(catalog, CallableHandles.SP_STORED_PROCEDURES, arguments,
getFunctionsColumnNames);
}
private static final String[] getFunctionsColumnsColumnNames = { /* 1 */ FUNCTION_CAT, /* 2 */ FUNCTION_SCHEM,
/* 3 */ FUNCTION_NAME, /* 4 */ COLUMN_NAME, /* 5 */ COLUMN_TYPE, /* 6 */ DATA_TYPE, /* 7 */ TYPE_NAME,
/* 8 */ PRECISION, /* 9 */ LENGTH, /* 10 */ SCALE, /* 11 */ RADIX, /* 12 */ NULLABLE, /* 13 */ REMARKS,
/* 14 */ COLUMN_DEF, /* 15 */ SQL_DATA_TYPE, /* 16 */ SQL_DATETIME_SUB, /* 17 */ CHAR_OCTET_LENGTH,
/* 18 */ ORDINAL_POSITION, /* 19 */ IS_NULLABLE};
@Override
public java.sql.ResultSet getFunctionColumns(String catalog, String schemaPattern, String functionNamePattern,
String columnNamePattern) throws SQLException {
checkClosed();
/*
* sp_sproc_columns [[@procedure_name =] 'name'] [,[@procedure_owner =] 'owner'] [,[@procedure_qualifier =]
* 'qualifier'] [,[@column_name =] 'column_name'] [,[@ODBCVer =] 'ODBCVer']
*/
// catalog cannot be empty in sql server
if (null != catalog && catalog.length() == 0) {
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_invalidArgument"));
Object[] msgArgs = {"catalog"};
SQLServerException.makeFromDriverError(null, null, form.format(msgArgs), null, false);
}
String[] arguments = new String[5];
// proc name supports escaping
arguments[0] = escapeIDName(functionNamePattern);
// schema name supports escaping.
arguments[1] = escapeIDName(schemaPattern);
arguments[2] = catalog;
// col name supports escaping
arguments[3] = escapeIDName(columnNamePattern);
arguments[4] = "3";
SQLServerResultSet rs = getResultSetWithProvidedColumnNames(catalog, CallableHandles.SP_SPROC_COLUMNS,
arguments, getFunctionsColumnsColumnNames);
// Hook in a filter on the DATA_TYPE column of the result set we're
// going to return that converts the ODBC values from sp_columns
// into JDBC values. Also for the precision
if (null != rs) {
rs.getColumn(6).setFilter(new DataTypeFilter());
if (connection.isKatmaiOrLater()) {
rs.getColumn(8).setFilter(new ZeroFixupFilter());
rs.getColumn(9).setFilter(new ZeroFixupFilter());
rs.getColumn(17).setFilter(new ZeroFixupFilter());
}
}
return rs;
}
@Override
public java.sql.ResultSet getClientInfoProperties() throws SQLException {
checkClosed();
return getResultSetFromInternalQueries(null, "SELECT" +
/* 1 */ " cast(NULL as char(1)) as NAME," +
/* 2 */ " cast(0 as int) as MAX_LEN," +
/* 3 */ " cast(NULL as char(1)) as DEFAULT_VALUE," +
/* 4 */ " cast(NULL as char(1)) as DESCRIPTION " + " where 0 = 1");
}
private static final String[] getBestRowIdentifierColumnNames = { /* 1 */ SCOPE, /* 2 */ COLUMN_NAME,
/* 3 */ DATA_TYPE, /* 4 */ TYPE_NAME, /* 5 */ COLUMN_SIZE, /* 6 */ BUFFER_LENGTH, /* 7 */ DECIMAL_DIGITS,
/* 8 */ PSEUDO_COLUMN};
@Override
public java.sql.ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope,
boolean nullable) throws SQLServerException, SQLTimeoutException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
/*
* sp_special_columns [@table_name =] 'table_name' [,[@table_owner =] 'table_owner'] [,[@qualifier =]
* 'qualifier'] [,[@col_type =] 'col_type'] [,[@scope =] 'scope'] [,[@nullable =] 'nullable'] [,[@ODBCVer =]
* 'ODBCVer'] ;
*/
String[] arguments = new String[7];
arguments[0] = table;
arguments[1] = schema;
arguments[2] = catalog;
arguments[3] = "R"; // coltype
if (bestRowTemporary == scope)
arguments[4] = "C"; // Scope is temporary C
else
arguments[4] = "T"; // Scope is for the transaction
if (nullable)
arguments[5] = "U"; // nullable
else
arguments[5] = "O"; // nullable
arguments[6] = "3"; // Use 3 unless required otherwise
SQLServerResultSet rs = getResultSetWithProvidedColumnNames(catalog, CallableHandles.SP_SPECIAL_COLUMNS,
arguments, getBestRowIdentifierColumnNames);
// Hook in a filter on the DATA_TYPE column of the result set we're
// going to return that converts the ODBC values from sp_columns
// into JDBC values.
if (null != rs) {
rs.getColumn(3).setFilter(new DataTypeFilter());
}
return rs;
}
@Override
public java.sql.ResultSet getCrossReference(String cat1, String schem1, String tab1, String cat2, String schem2,
String tab2) throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
/*
* sp_fkeys [ @pktable_name = ] 'pktable_name' [ , [ @pktable_owner = ] 'pktable_owner' ] [ ,
* [ @pktable_qualifier = ] 'pktable_qualifier' ] { , [ @fktable_name = ] 'fktable_name' } [ , [ @fktable_owner
* = ] 'fktable_owner' ] [ , [ @fktable_qualifier = ] 'fktable_qualifier' ]
*/
String[] arguments = {tab1, schem1, cat1, tab2, schem2, cat2};
return executeSPFkeys(arguments);
}
@Override
public String getDatabaseProductName() throws SQLServerException {
checkClosed();
return "Microsoft SQL Server";
}
@Override
public String getDatabaseProductVersion() throws SQLServerException {
checkClosed();
return connection.sqlServerVersion;
}
@Override
public int getDefaultTransactionIsolation() throws SQLServerException {
checkClosed();
return java.sql.Connection.TRANSACTION_READ_COMMITTED;
}
@Override
public int getDriverMajorVersion() {
return SQLJdbcVersion.MAJOR;
}
@Override
public int getDriverMinorVersion() {
return SQLJdbcVersion.MINOR;
}
@Override
public String getDriverName() throws SQLServerException {
checkClosed();
return SQLServerDriver.PRODUCT_NAME;
}
@Override
public String getDriverVersion() throws SQLServerException {
// driver version in the Major.Minor.MMDD.Revision form
int n = getDriverMinorVersion();
String s = getDriverMajorVersion() + ".";
s += "" + n;
s = s + ".";
s = s + SQLJdbcVersion.PATCH;
s = s + ".";
s = s + SQLJdbcVersion.BUILD;
return s;
}
@Override
public java.sql.ResultSet getExportedKeys(String cat, String schema, String table) throws SQLException {
return getCrossReference(cat, schema, table, null, null, null);
}
@Override
public String getExtraNameCharacters() throws SQLServerException {
checkClosed();
return "$#@";
}
@Override
public String getIdentifierQuoteString() throws SQLServerException {
checkClosed();
return "\"";
}
@Override
public java.sql.ResultSet getImportedKeys(String cat, String schema, String table) throws SQLException {
return getCrossReference(null, null, null, cat, schema, table);
}
private ResultSet executeSPFkeys(String[] procParams) throws SQLException {
if (!this.connection.isAzureDW()) {
String tempTableName = "@jdbc_temp_fkeys_result";
String sql = "DECLARE " + tempTableName + " table (PKTABLE_QUALIFIER sysname, " + "PKTABLE_OWNER sysname, "
+ "PKTABLE_NAME sysname, " + "PKCOLUMN_NAME sysname, " + "FKTABLE_QUALIFIER sysname, "
+ "FKTABLE_OWNER sysname, " + "FKTABLE_NAME sysname, " + "FKCOLUMN_NAME sysname, "
+ "KEY_SEQ smallint, " + "UPDATE_RULE smallint, " + "DELETE_RULE smallint, " + "FK_NAME sysname, "
+ "PK_NAME sysname, " + "DEFERRABILITY smallint);" + "INSERT INTO " + tempTableName
+ " EXEC sp_fkeys ?,?,?,?,?,?;" + "SELECT t.PKTABLE_QUALIFIER AS PKTABLE_CAT, "
+ "t.PKTABLE_OWNER AS PKTABLE_SCHEM, " + "t.PKTABLE_NAME, " + "t.PKCOLUMN_NAME, "
+ "t.FKTABLE_QUALIFIER AS FKTABLE_CAT, " + "t.FKTABLE_OWNER AS FKTABLE_SCHEM, " + "t.FKTABLE_NAME, "
+ "t.FKCOLUMN_NAME, " + "t.KEY_SEQ, " + "CASE s.update_referential_action " + "WHEN 1 THEN 0 " +
// cascade - note that sp_fkey and sys.foreign_keys have flipped values for
// cascade and no action
"WHEN 0 THEN 3 " + // no action
"WHEN 2 THEN 2 " + // set null
"WHEN 3 THEN 4 " + // set default
"END as UPDATE_RULE, " + "CASE s.delete_referential_action " + "WHEN 1 THEN 0 " + "WHEN 0 THEN 3 "
+ "WHEN 2 THEN 2 " + "WHEN 3 THEN 4 " + "END as DELETE_RULE, " + "t.FK_NAME, " + "t.PK_NAME, "
+ "t.DEFERRABILITY " + "FROM " + tempTableName + " t "
+ "LEFT JOIN sys.foreign_keys s ON t.FK_NAME = s.name COLLATE database_default AND schema_id(t.FKTABLE_OWNER) = s.schema_id "
+ "ORDER BY PKTABLE_CAT, PKTABLE_SCHEM, PKTABLE_NAME, KEY_SEQ";
SQLServerCallableStatement cstmt = (SQLServerCallableStatement) connection.prepareCall(sql);
cstmt.closeOnCompletion();
for (int i = 0; i < 6; i++) {
cstmt.setString(i + 1, procParams[i]);
}
String currentDB = null;
if (null != procParams[2] && !procParams[2].isEmpty()) {// pktable_qualifier
currentDB = switchCatalogs(procParams[2]);
} else if (null != procParams[5] && !procParams[5].isEmpty()) {// fktable_qualifier
currentDB = switchCatalogs(procParams[5]);
}
ResultSet rs = cstmt.executeQuery();
if (null != currentDB) {
switchCatalogs(currentDB);
}
return rs;
} else {
// Azure DW does not support foreign keys, return an empty result set with correct metadata.
ResultSet userRs = null;
PreparedStatement pstmt = null;
StringBuilder azureDwSelectBuilder = new StringBuilder();
LinkedHashMap importedKeysDWColumns = getImportedKeysDWColumns;
if (null == importedKeysDWColumns) {
LOCK.lock();
try {
importedKeysDWColumns = getImportedKeysDWColumns;
if (null == importedKeysDWColumns) {
getImportedKeysDWColumns = importedKeysDWColumns = new LinkedHashMap<>(14, 1.0F);
importedKeysDWColumns.put(1, PKTABLE_CAT);
importedKeysDWColumns.put(2, PKTABLE_SCHEM);
importedKeysDWColumns.put(3, PKTABLE_NAME);
importedKeysDWColumns.put(4, PKCOLUMN_NAME);
importedKeysDWColumns.put(5, FKTABLE_CAT);
importedKeysDWColumns.put(6, FKTABLE_SCHEM);
importedKeysDWColumns.put(7, FKTABLE_NAME);
importedKeysDWColumns.put(8, FKCOLUMN_NAME);
importedKeysDWColumns.put(9, KEY_SEQ);
importedKeysDWColumns.put(10, UPDATE_RULE);
importedKeysDWColumns.put(11, DELETE_RULE);
importedKeysDWColumns.put(12, FK_NAME);
importedKeysDWColumns.put(13, PK_NAME);
importedKeysDWColumns.put(14, DEFERRABILITY);
}
} finally {
LOCK.unlock();
}
}
azureDwSelectBuilder.append(generateAzureDWEmptyRS(getImportedKeysDWColumns));
try {
pstmt = this.connection.prepareStatement(azureDwSelectBuilder.toString());
userRs = pstmt.executeQuery();
pstmt.closeOnCompletion();
return userRs;
} catch (SQLException e) {
if (null != pstmt) {
try {
pstmt.close();
} catch (SQLServerException ignore) {
if (loggerExternal.isLoggable(Level.FINER)) {
loggerExternal.finer(
"executeSPFkeys() threw an exception when attempting to close PreparedStatement");
}
}
}
throw e;
}
}
}
private static final String[] getIndexInfoColumnNames = { /* 1 */ TABLE_CAT, /* 2 */ TABLE_SCHEM,
/* 3 */ TABLE_NAME, /* 4 */ NON_UNIQUE, /* 5 */ INDEX_QUALIFIER, /* 6 */ INDEX_NAME, /* 7 */ TYPE,
/* 8 */ ORDINAL_POSITION, /* 9 */ COLUMN_NAME, /* 10 */ ASC_OR_DESC, /* 11 */ CARDINALITY, /* 12 */ PAGES,
/* 13 */ FILTER_CONDITION};
@Override
public java.sql.ResultSet getIndexInfo(String cat, String schema, String table, boolean unique,
boolean approximate) throws SQLServerException, SQLTimeoutException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
/*
* sp_statistics [ @table_name = ] 'table_name' [ , [ @table_owner = ] 'owner' ] [ , [ @table_qualifier = ]
* 'qualifier' ] [ , [ @index_name = ] 'index_name' ] [ , [ @is_unique = ] 'is_unique' ] [ , [ @accuracy = ]
* 'accuracy' ]
*/
String[] arguments = new String[6];
arguments[0] = table;
arguments[1] = schema;
arguments[2] = cat;
// use default for index name
arguments[3] = "%"; // index name % is default
if (unique)
arguments[4] = "Y"; // is_unique
else
arguments[4] = "N";
if (approximate)
arguments[5] = "Q";
else
arguments[5] = "E";
return getResultSetWithProvidedColumnNames(cat, CallableHandles.SP_STATISTICS, arguments,
getIndexInfoColumnNames);
}
@Override
public int getMaxBinaryLiteralLength() throws SQLServerException {
checkClosed();
return 0;
}
@Override
public int getMaxCatalogNameLength() throws SQLServerException {
checkClosed();
return 128;
}
@Override
public int getMaxCharLiteralLength() throws SQLServerException {
checkClosed();
return 0;
}
@Override
public int getMaxColumnNameLength() throws SQLServerException {
checkClosed();
return 128;
}
@Override
public int getMaxColumnsInGroupBy() throws SQLServerException {
checkClosed();
return 0;
}
@Override
public int getMaxColumnsInIndex() throws SQLServerException {
checkClosed();
return 16;
}
@Override
public int getMaxColumnsInOrderBy() throws SQLServerException {
checkClosed();
return 0;
}
@Override
public int getMaxColumnsInSelect() throws SQLServerException {
checkClosed();
return 4096;
}
@Override
public int getMaxColumnsInTable() throws SQLServerException {
checkClosed();
return 1024;
}
@Override
public int getMaxConnections() throws SQLException {
checkClosed();
try (SQLServerResultSet rs = getResultSetFromInternalQueries(null,
"select maximum from sys.configurations where name = 'user connections'")) {
if (!rs.next()) {
return 0;
}
return rs.getInt("maximum");
} catch (SQLServerException e) {
// Try with sp_configure if users do not have privileges to execute sys.configurations
try (SQLServerResultSet rs1 = getResultSetFromInternalQueries(null, "sp_configure 'user connections'")) {
if (!rs1.next()) {
return 0;
}
return rs1.getInt("maximum");
} catch (SQLServerException e1) {
return 0;
}
}
}
@Override
public int getMaxCursorNameLength() throws SQLServerException {
checkClosed();
return 0;
}
@Override
public int getMaxIndexLength() throws SQLServerException {
checkClosed();
return 900;
}
@Override
public int getMaxProcedureNameLength() throws SQLServerException {
checkClosed();
return 128;
}
@Override
public int getMaxRowSize() throws SQLServerException {
checkClosed();
return 8060;
}
@Override
public int getMaxSchemaNameLength() throws SQLServerException {
checkClosed();
return 128;
}
@Override
public int getMaxStatementLength() throws SQLServerException {
checkClosed();
// SQL Server currently limits to 64K the number of TDS packets per
// conversation.
// This number multiplied by the size of each TDS packet yields the
// maximum total
// size of any request to the server, which is therefore an upper bound
// to the
// maximum SQL statement length.
return 65536 * connection.getTDSPacketSize();
}
@Override
public int getMaxStatements() throws SQLServerException {
checkClosed();
return 0;
}
@Override
public int getMaxTableNameLength() throws SQLServerException {
checkClosed();
return 128;
}
@Override
public int getMaxTablesInSelect() throws SQLServerException {
checkClosed();
return 256;
}
@Override
public int getMaxUserNameLength() throws SQLServerException {
checkClosed();
return 128;
}
@Override
public String getNumericFunctions() throws SQLServerException {
checkClosed();
return "ABS,ACOS,ASIN,ATAN,ATAN2,CEILING,COS,COT,DEGREES,EXP,FLOOR,LOG,LOG10,MOD,PI,POWER,RADIANS,RAND,ROUND,SIGN,SIN,SQRT,TAN,TRUNCATE";
}
private static final String[] getPrimaryKeysColumnNames = { /* 1 */ TABLE_CAT, /* 2 */ TABLE_SCHEM,
/* 3 */ TABLE_NAME, /* 4 */ COLUMN_NAME, /* 5 */ KEY_SEQ, /* 6 */ PK_NAME};
@Override
public java.sql.ResultSet getPrimaryKeys(String cat, String schema,
String table) throws SQLServerException, SQLTimeoutException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
/*
* sp_pkeys [ @table_name = ] 'name' [ , [ @table_owner = ] 'owner' ] [ , [ @table_qualifier = ] 'qualifier' ]
*/
String[] arguments = new String[3];
arguments[0] = table;
arguments[1] = schema;
arguments[2] = cat;
return getResultSetWithProvidedColumnNames(cat, CallableHandles.SP_PKEYS, arguments, getPrimaryKeysColumnNames);
}
private static final String[] getProcedureColumnsColumnNames = { /* 1 */ PROCEDURE_CAT, /* 2 */ PROCEDURE_SCHEM,
/* 3 */ PROCEDURE_NAME, /* 4 */ COLUMN_NAME, /* 5 */ COLUMN_TYPE, /* 6 */ DATA_TYPE, /* 7 */ TYPE_NAME,
/* 8 */ PRECISION, /* 9 */ LENGTH, /* 10 */ SCALE, /* 11 */ RADIX, /* 12 */ NULLABLE, /* 13 */ REMARKS,
/* 14 */ COLUMN_DEF, /* 15 */ SQL_DATA_TYPE, /* 16 */ SQL_DATETIME_SUB, /* 17 */ CHAR_OCTET_LENGTH,
/* 18 */ ORDINAL_POSITION, /* 19 */ IS_NULLABLE};
@Override
public java.sql.ResultSet getProcedureColumns(String catalog, String schema, String proc,
String col) throws SQLServerException, SQLTimeoutException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
/*
* sp_sproc_columns [[@procedure_name =] 'name'] [,[@procedure_owner =] 'owner'] [,[@procedure_qualifier =]
* 'qualifier'] [,[@column_name =] 'column_name'] [,[@ODBCVer =] 'ODBCVer']
*/
String[] arguments = new String[5];
// proc name supports escaping
proc = escapeIDName(proc);
arguments[0] = proc;
arguments[1] = schema;
arguments[2] = catalog;
// col name supports escaping
col = escapeIDName(col);
arguments[3] = col;
arguments[4] = "3";
SQLServerResultSet rs = getResultSetWithProvidedColumnNames(catalog, CallableHandles.SP_SPROC_COLUMNS,
arguments, getProcedureColumnsColumnNames);
// Hook in a filter on the DATA_TYPE column of the result set we're
// going to return that converts the ODBC values from sp_columns
// into JDBC values. Also for the precision
if (null != rs) {
rs.getColumn(6).setFilter(new DataTypeFilter());
if (connection.isKatmaiOrLater()) {
rs.getColumn(8).setFilter(new ZeroFixupFilter());
rs.getColumn(9).setFilter(new ZeroFixupFilter());
rs.getColumn(17).setFilter(new ZeroFixupFilter());
}
}
return rs;
}
private static final String[] getProceduresColumnNames = { /* 1 */ PROCEDURE_CAT, /* 2 */ PROCEDURE_SCHEM,
/* 3 */ PROCEDURE_NAME, /* 4 */ NUM_INPUT_PARAMS, /* 5 */ NUM_OUTPUT_PARAMS, /* 6 */ NUM_RESULT_SETS,
/* 7 */ REMARKS, /* 8 */ PROCEDURE_TYPE};
@Override
public java.sql.ResultSet getProcedures(String catalog, String schema,
String proc) throws SQLServerException, SQLTimeoutException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
/*
* sp_stored_procedures [ [ @sp_name = ] 'name' ] [ , [ @sp_owner = ] 'schema'] [ , [ @sp_qualifier = ]
* 'qualifier' ] [ , [@fUsePattern = ] 'fUsePattern' ]
*/
String[] arguments = new String[3];
arguments[0] = escapeIDName(proc);
arguments[1] = schema;
arguments[2] = catalog;
return getResultSetWithProvidedColumnNames(catalog, CallableHandles.SP_STORED_PROCEDURES, arguments,
getProceduresColumnNames);
}
@Override
public String getProcedureTerm() throws SQLServerException {
checkClosed();
return "stored procedure";
}
@Override
public ResultSet getPseudoColumns(String catalog, String schemaPattern, String tableNamePattern,
String columnNamePattern) throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
// SQL server does not support pseudo columns for identifiers
// as per
// http://msdn.microsoft.com/en-us/library/ms378445%28v=sql.110%29.aspx
// so just return empty result set
return getResultSetFromInternalQueries(catalog, "SELECT" +
/* 1 */ " cast(NULL as char(1)) as TABLE_CAT," +
/* 2 */ " cast(NULL as char(1)) as TABLE_SCHEM," +
/* 3 */ " cast(NULL as char(1)) as TABLE_NAME," +
/* 4 */ " cast(NULL as char(1)) as COLUMN_NAME," +
/* 5 */ " cast(0 as int) as DATA_TYPE," +
/* 6 */ " cast(0 as int) as COLUMN_SIZE," +
/* 7 */ " cast(0 as int) as DECIMAL_DIGITS," +
/* 8 */ " cast(0 as int) as NUM_PREC_RADIX," +
/* 9 */ " cast(NULL as char(1)) as COLUMN_USAGE," +
/* 10 */ " cast(NULL as char(1)) as REMARKS," +
/* 11 */ " cast(0 as int) as CHAR_OCTET_LENGTH," +
/* 12 */ " cast(NULL as char(1)) as IS_NULLABLE" + " where 0 = 1");
}
@Override
public java.sql.ResultSet getSchemas() throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
return getSchemasInternal(null, null);
}
private java.sql.ResultSet getSchemasInternal(String catalog, String schemaPattern) throws SQLException {
String s;
// The schemas that return null for catalog name, these are prebuilt
// schemas shipped by SQLServer, if SQLServer adds anymore of these
// we need to add them here.
String constSchemas = " ('dbo', 'guest','INFORMATION_SCHEMA','sys','db_owner', 'db_accessadmin', 'db_securityadmin', 'db_ddladmin' "
+ " ,'db_backupoperator','db_datareader','db_datawriter','db_denydatareader','db_denydatawriter') ";
String schema = "sys.schemas";
String schemaName = "sys.schemas.name";
if (null != catalog && catalog.length() != 0) {
final String catalogId = Util.escapeSQLId(catalog);
schema = catalogId + "." + schema;
schemaName = catalogId + "." + schemaName;
}
// The common schemas need to be under null catalog name however the
// schemas specific to the particular catalog has to have the current
// catalog name
// to achive this, first we figure out the common schemas by
// intersecting current catalogs schemas with the const schemas (ie
// builtinSchemas)
s = "select " + schemaName + " 'TABLE_SCHEM',";
if (null != catalog && catalog.length() == 0) {
s += "null 'TABLE_CATALOG' ";
} else {
s += " CASE WHEN " + schemaName + " IN " + constSchemas + " THEN null ELSE ";
if (null != catalog && catalog.length() != 0) {
s += "'" + catalog + "' ";
} else
s += " DB_NAME() ";
s += " END 'TABLE_CATALOG' ";
}
s += " from " + schema;
// Handle the case when catalog is empty this means common schemas only
//
if (null != catalog && catalog.length() == 0) {
if (null != schemaPattern)
s += " where " + schemaName + " like ? and ";
else
s += " where ";
s += schemaName + " in " + constSchemas;
} else if (null != schemaPattern)
s += " where " + schemaName + " like ? ";
s += " order by 2, 1";
if (logger.isLoggable(java.util.logging.Level.FINE)) {
logger.fine(toString() + " schema query (" + s + ")");
}
SQLServerResultSet rs;
if (null == schemaPattern) {
catalog = null;
rs = getResultSetFromInternalQueries(catalog, s);
} else {
// The prepared statement is not closed after execution.
// No we will not "leak a server handle" per execution
// as the prepared statement will close as the resultset 'rs' is closed
SQLServerPreparedStatement ps = (SQLServerPreparedStatement) connection.prepareStatement(s);
ps.closeOnCompletion();
ps.setString(1, schemaPattern);
rs = (SQLServerResultSet) ps.executeQueryInternal();
}
return rs;
}
@Override
public java.sql.ResultSet getSchemas(String catalog, String schemaPattern) throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
return getSchemasInternal(catalog, escapeIDName(schemaPattern));
}
@Override
public String getSchemaTerm() throws SQLServerException {
checkClosed();
return "schema";
}
@Override
public String getSearchStringEscape() throws SQLServerException {
checkClosed();
return "\\";
}
@Override
public String getSQLKeywords() throws SQLServerException {
checkClosed();
return SQL_KEYWORDS;
}
private static String createSqlKeyWords() {
return "ADD,ALL,ALTER,AND,ANY,AS,ASC,AUTHORIZATION," + "BACKUP,BEGIN,BETWEEN,BREAK,BROWSE,BULK,BY,"
+ "CASCADE,CASE,CHECK,CHECKPOINT,CLOSE,CLUSTERED,COALESCE,COLLATE,COLUMN,COMMIT,"
+ "COMPUTE,CONSTRAINT,CONTAINS,CONTAINSTABLE,CONTINUE,CONVERT,CREATE,CROSS,CURRENT,"
+ "CURRENT_DATE,CURRENT_TIME,CURRENT_TIMESTAMP,CURRENT_USER,CURSOR,"
+ "DATABASE,DBCC,DEALLOCATE,DECLARE,DEFAULT,DELETE,DENY,DESC,DISK,"
+ "DISTINCT,DISTRIBUTED,DOUBLE,DROP,DUMP,"
+ "ELSE,END,ERRLVL,ESCAPE,EXCEPT,EXEC,EXECUTE,EXISTS,EXIT,EXTERNAL,"
+ "FETCH,FILE,FILLFACTOR,FOR,FOREIGN,FREETEXT,FREETEXTTABLE,FROM,FULL,FUNCTION," + "GOTO,GRANT,GROUP,"
+ "HAVING,HOLDLOCK,"
+ "IDENTITY,IDENTITY_INSERT,IDENTITYCOL,IF,IN,INDEX,INNER,INSERT,INTERSECT,INTO,IS," + "JOIN,"
+ "KEY,KILL," + "LEFT,LIKE,LINENO,LOAD," + "MERGE," + "NATIONAL,NOCHECK,NONCLUSTERED,NOT,NULL,NULLIF,"
+ "OF,OFF,OFFSETS,ON,OPEN,OPENDATASOURCE,OPENQUERY," + "OPENROWSET,OPENXML,OPTION,OR,ORDER,OUTER,OVER,"
+ "PERCENT,PIVOT,PLAN,PRECISION,PRIMARY,PRINT,PROC,PROCEDURE,PUBLIC,"
+ "RAISERROR,READ,READTEXT,RECONFIGURE,REFERENCES,REPLICATION,RESTORE,RESTRICT,"
+ "RETURN,REVERT,REVOKE,RIGHT,ROLLBACK,ROWCOUNT,ROWGUIDCOL,RULE,"
+ "SAVE,SCHEMA,SECURITYAUDIT,SELECT,SEMANTICKEYPHRASETABLE,SEMANTICSIMILARITYDETAILSTABLE,"
+ "SEMANTICSIMILARITYTABLE,SESSION_USER,SET,SETUSER,SHUTDOWN,SOME,STATISTICS,SYSTEM_USER,"
+ "TABLE,TABLESAMPLE,TEXTSIZE,THEN,TO,TOP,TRAN,TRANSACTION,TRIGGER,TRUNCATE,TRY_CONVERT,TSEQUAL,"
+ "UNION,UNIQUE,UNPIVOT,UPDATE,UPDATETEXT,USE,USER," + "VALUES,VARYING,VIEW,"
+ "WAITFOR,WHEN,WHERE,WHILE,WITH,WITHIN GROUP,WRITETEXT";
}
@Override
public String getStringFunctions() throws SQLServerException {
checkClosed();
return "ASCII,CHAR,CONCAT,DIFFERENCE,INSERT,LCASE,LEFT,LENGTH,LOCATE,LTRIM,REPEAT,REPLACE,RIGHT,RTRIM,SOUNDEX,SPACE,SUBSTRING,UCASE";
}
@Override
public String getSystemFunctions() throws SQLServerException {
checkClosed();
return "DATABASE,IFNULL,USER"; // The functions no reinstated after the
// CTS certification.
}
private static final String[] getTablePrivilegesColumnNames = { /* 1 */ TABLE_CAT, /* 2 */ TABLE_SCHEM,
/* 3 */ TABLE_NAME, /* 4 */ GRANTOR, /* 5 */ GRANTEE, /* 6 */ PRIVILEGE, /* 7 */ IS_GRANTABLE};
@Override
public java.sql.ResultSet getTablePrivileges(String catalog, String schema,
String table) throws SQLServerException, SQLTimeoutException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
table = escapeIDName(table);
schema = escapeIDName(schema);
/*
* sp_table_privileges [ @table_name = ] 'table_name' [ , [ @table_owner = ] 'table_owner' ] [ ,
* [ @table_qualifier = ] 'table_qualifier' ] [ , [@fUsePattern =] 'fUsePattern']
*/
String[] arguments = new String[3];
arguments[0] = table;
arguments[1] = schema;
arguments[2] = catalog;
return getResultSetWithProvidedColumnNames(catalog, CallableHandles.SP_TABLE_PRIVILEGES, arguments,
getTablePrivilegesColumnNames);
}
@Override
public java.sql.ResultSet getTableTypes() throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
String s = "SELECT 'VIEW' 'TABLE_TYPE' UNION SELECT 'TABLE' UNION SELECT 'SYSTEM TABLE'";
return getResultSetFromInternalQueries(null, s);
}
@Override
public String getTimeDateFunctions() throws SQLServerException {
checkClosed();
return "CURDATE,CURTIME,DAYNAME,DAYOFMONTH,DAYOFWEEK,DAYOFYEAR,HOUR,MINUTE,MONTH,MONTHNAME,NOW,QUARTER,SECOND,TIMESTAMPADD,TIMESTAMPDIFF,WEEK,YEAR";
}
@Override
public java.sql.ResultSet getTypeInfo() throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
SQLServerResultSet rs;
// We support only sql2k5 and above
if (connection.isKatmaiOrLater())
rs = getResultSetFromInternalQueries(null, "sp_datatype_info_100 @ODBCVer=3");
else
rs = getResultSetFromInternalQueries(null, "sp_datatype_info @ODBCVer=3");
rs.setColumnName(11, "FIXED_PREC_SCALE");
// Hook in a filter on the DATA_TYPE column of the result set we're
// going to return that converts the ODBC values from sp_columns
// into JDBC values.
rs.getColumn(2).setFilter(new DataTypeFilter());
return rs;
}
@Override
public String getURL() throws SQLServerException {
checkClosed();
// Build up the URL with the connection properties do not hand out user
// ID and password
StringBuilder url = new StringBuilder();
// get the properties collection from the connection.
Properties props = connection.activeConnectionProperties;
DriverPropertyInfo[] info = SQLServerDriver.getPropertyInfoFromProperties(props);
String serverName = null;
String portNumber = null;
String instanceName = null;
// build the connection string without the server name, instance name
// and port number as these go in the front
int index = info.length;
while (--index >= 0) {
String name = info[index].name;
// making sure no security info is exposed.
if (!name.equals(SQLServerDriverBooleanProperty.INTEGRATED_SECURITY.toString())
&& !name.equals(SQLServerDriverStringProperty.USER.toString())
&& !name.equals(SQLServerDriverStringProperty.PASSWORD.toString())
&& !name.equals(SQLServerDriverStringProperty.KEY_STORE_SECRET.toString())
&& !name.equals(SQLServerDriverStringProperty.TRUST_STORE_PASSWORD.toString())) {
String val = info[index].value;
// skip empty strings
if (null != val && 0 != val.length()) {
// special case these server name, instance name and port
// number as these go in the front
if (name.equals(SQLServerDriverStringProperty.SERVER_NAME.toString())) {
serverName = val;
} else if (name.equals(SQLServerDriverStringProperty.INSTANCE_NAME.toString())) {
instanceName = val;
} else if (name.equals(SQLServerDriverIntProperty.PORT_NUMBER.toString())) {
portNumber = val;
} else {
// build name value pairs separated by a semi colon
url.append(name);
url.append("=");
url.append(val);
url.append(";");
}
}
}
}
// insert the special items in the front in the reverse order.
// This way we will get the expected form as below.
// MYSERVER\INSTANCEFOO:1433
// port number first, we should always have port number
url.insert(0, ";");
url.insert(0, portNumber);
url.insert(0, ":");
if (null != instanceName) {
url.insert(0, instanceName);
url.insert(0, "\\");
}
url.insert(0, serverName);
url.insert(0, URL_PREFIX); // insert the prefix at the front.
return (url.toString());
}
@Override
public String getUserName() throws SQLServerException, SQLTimeoutException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
String result = "";
try (SQLServerStatement s = (SQLServerStatement) connection.createStatement()) {
try (SQLServerResultSet rs = s.executeQueryInternal("SELECT SYSTEM_USER")) {
// Select system_user will always return a row.
boolean next = rs.next();
assert next;
result = rs.getString(1);
} catch (SQLServerException e) {
// execution using impersonated security context is disallowed for Azure SQL Server so return CURRENT_USER instead
if (e.getErrorCode() == SQLServerException.IMPERSONATION_CONTEXT_NOT_SUPPORTED) {
if (loggerExternal.isLoggable(Level.FINEST)) {
loggerExternal.finest(toString()
+ " Impersonation context is not supported in this version of SQL Server. Re-try getting CURRENT_USER");
}
try (SQLServerResultSet rs = s.executeQueryInternal("SELECT CURRENT_USER")) {
boolean next = rs.next();
assert next;
result = rs.getString(1);
}
} else {
// re-throw
throw e;
}
}
}
return result;
}
private static final String[] getVersionColumnsColumnNames = { /* 1 */ SCOPE, /* 2 */ COLUMN_NAME,
/* 3 */ DATA_TYPE, /* 4 */ TYPE_NAME, /* 5 */ COLUMN_SIZE, /* 6 */ BUFFER_LENGTH, /* 7 */ DECIMAL_DIGITS,
/* 8 */ PSEUDO_COLUMN};
@Override
public java.sql.ResultSet getVersionColumns(String catalog, String schema,
String table) throws SQLServerException, SQLTimeoutException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
/*
* sp_special_columns [@table_name =] 'table_name' [,[@table_owner =] 'table_owner'] [,[@qualifier =]
* 'qualifier'] [,[@col_type =] 'col_type'] [,[@scope =] 'scope'] [,[@nullable =] 'nullable'] [,[@ODBCVer =]
* 'ODBCVer'] ;
*/
String[] arguments = new String[7];
arguments[0] = table;
arguments[1] = schema;
arguments[2] = catalog;
arguments[3] = "V"; // col type
arguments[4] = "T"; // scope
arguments[5] = "U"; // nullable
arguments[6] = "3"; // odbc ver
SQLServerResultSet rs = getResultSetWithProvidedColumnNames(catalog, CallableHandles.SP_SPECIAL_COLUMNS,
arguments, getVersionColumnsColumnNames);
// Hook in a filter on the DATA_TYPE column of the result set we're
// going to return that converts the ODBC values from sp_columns
// into JDBC values.
if (null != rs) {
rs.getColumn(3).setFilter(new DataTypeFilter());
}
return rs;
}
@Override
public boolean isCatalogAtStart() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean isReadOnly() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean nullPlusNonNullIsNull() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean nullsAreSortedAtEnd() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean nullsAreSortedAtStart() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean nullsAreSortedHigh() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean nullsAreSortedLow() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean storesLowerCaseIdentifiers() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean storesLowerCaseQuotedIdentifiers() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean storesMixedCaseIdentifiers() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean storesMixedCaseQuotedIdentifiers() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean storesUpperCaseIdentifiers() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean storesUpperCaseQuotedIdentifiers() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsAlterTableWithAddColumn() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsAlterTableWithDropColumn() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsANSI92EntryLevelSQL() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsANSI92FullSQL() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsANSI92IntermediateSQL() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsCatalogsInDataManipulation() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsCatalogsInIndexDefinitions() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsCatalogsInProcedureCalls() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsCatalogsInTableDefinitions() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsColumnAliasing() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsConvert() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsConvert(int fromType, int toType) throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsCoreSQLGrammar() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsCorrelatedSubqueries() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsDataManipulationTransactionsOnly() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsDifferentTableCorrelationNames() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsExpressionsInOrderBy() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsExtendedSQLGrammar() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsFullOuterJoins() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsGroupBy() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsGroupByBeyondSelect() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsGroupByUnrelated() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsIntegrityEnhancementFacility() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsLikeEscapeClause() throws SQLServerException {
checkClosed();
return !connection.isAzureDW();
}
@Override
public boolean supportsLimitedOuterJoins() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsMinimumSQLGrammar() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsMixedCaseIdentifiers() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsMixedCaseQuotedIdentifiers() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsMultipleResultSets() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsMultipleTransactions() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsNonNullableColumns() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsOpenCursorsAcrossCommit() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsOpenCursorsAcrossRollback() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsOpenStatementsAcrossCommit() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsOpenStatementsAcrossRollback() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsOrderByUnrelated() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsOuterJoins() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsPositionedDelete() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsPositionedUpdate() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSchemasInDataManipulation() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSchemasInIndexDefinitions() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSchemasInPrivilegeDefinitions() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSchemasInProcedureCalls() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSchemasInTableDefinitions() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSelectForUpdate() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsStoredProcedures() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSubqueriesInComparisons() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSubqueriesInExists() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSubqueriesInIns() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSubqueriesInQuantifieds() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsTableCorrelationNames() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsTransactionIsolationLevel(int level) throws SQLServerException {
checkClosed();
switch (level) {
case Connection.TRANSACTION_READ_UNCOMMITTED:
case Connection.TRANSACTION_READ_COMMITTED:
case Connection.TRANSACTION_REPEATABLE_READ:
case Connection.TRANSACTION_SERIALIZABLE:
case SQLServerConnection.TRANSACTION_SNAPSHOT:
return true;
default:
return false;
}
}
@Override
public boolean supportsTransactions() throws SQLServerException {
checkClosed();
return connection.supportsTransactions();
}
@Override
public boolean supportsUnion() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsUnionAll() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean usesLocalFilePerTable() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean usesLocalFiles() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsResultSetType(int type) throws SQLServerException {
checkClosed();
checkResultType(type);
switch (type) {
case ResultSet.TYPE_FORWARD_ONLY:
case ResultSet.TYPE_SCROLL_INSENSITIVE:
case ResultSet.TYPE_SCROLL_SENSITIVE:
// case SQLServerResultSet.TYPE_SS_SCROLL_STATIC: insensitive
// synonym
// case SQLServerResultSet.TYPE_SS_SCROLL_KEYSET: sensitive
// synonym
case SQLServerResultSet.TYPE_SS_DIRECT_FORWARD_ONLY:
case SQLServerResultSet.TYPE_SS_SERVER_CURSOR_FORWARD_ONLY:
case SQLServerResultSet.TYPE_SS_SCROLL_DYNAMIC:
return true;
default:
return false;
}
}
@Override
public boolean supportsResultSetConcurrency(int type, int concurrency) throws SQLServerException {
checkClosed();
checkResultType(type);
checkConcurrencyType(concurrency);
switch (type) {
case ResultSet.TYPE_FORWARD_ONLY:
case ResultSet.TYPE_SCROLL_SENSITIVE:
// case SQLServerResultSet.TYPE_SS_SCROLL_KEYSET: sensitive
// synonym
case SQLServerResultSet.TYPE_SS_SCROLL_DYNAMIC:
case SQLServerResultSet.TYPE_SS_SERVER_CURSOR_FORWARD_ONLY:
return true;
case ResultSet.TYPE_SCROLL_INSENSITIVE:
// case SQLServerResultSet.TYPE_SS_SCROLL_STATIC: sensitive
// synonym
case SQLServerResultSet.TYPE_SS_DIRECT_FORWARD_ONLY:
return (ResultSet.CONCUR_READ_ONLY == concurrency);
default:
// per spec if we do not know we do not support.
return false;
}
}
@Override
public boolean ownUpdatesAreVisible(int type) throws SQLServerException {
checkClosed();
checkResultType(type);
return (type == SQLServerResultSet.TYPE_SS_SCROLL_DYNAMIC || SQLServerResultSet.TYPE_FORWARD_ONLY == type
|| SQLServerResultSet.TYPE_SCROLL_SENSITIVE == type || SQLServerResultSet.TYPE_SS_SCROLL_KEYSET == type
|| SQLServerResultSet.TYPE_SS_SERVER_CURSOR_FORWARD_ONLY == type);
}
@Override
public boolean ownDeletesAreVisible(int type) throws SQLServerException {
checkClosed();
checkResultType(type);
return (type == SQLServerResultSet.TYPE_SS_SCROLL_DYNAMIC || SQLServerResultSet.TYPE_FORWARD_ONLY == type
|| SQLServerResultSet.TYPE_SCROLL_SENSITIVE == type || SQLServerResultSet.TYPE_SS_SCROLL_KEYSET == type
|| SQLServerResultSet.TYPE_SS_SERVER_CURSOR_FORWARD_ONLY == type);
}
@Override
public boolean ownInsertsAreVisible(int type) throws SQLServerException {
checkClosed();
checkResultType(type);
return (type == SQLServerResultSet.TYPE_SS_SCROLL_DYNAMIC || SQLServerResultSet.TYPE_FORWARD_ONLY == type
|| SQLServerResultSet.TYPE_SCROLL_SENSITIVE == type || SQLServerResultSet.TYPE_SS_SCROLL_KEYSET == type
|| SQLServerResultSet.TYPE_SS_SERVER_CURSOR_FORWARD_ONLY == type);
}
@Override
public boolean othersUpdatesAreVisible(int type) throws SQLServerException {
checkClosed();
checkResultType(type);
return (type == SQLServerResultSet.TYPE_SS_SCROLL_DYNAMIC || SQLServerResultSet.TYPE_FORWARD_ONLY == type
|| SQLServerResultSet.TYPE_SCROLL_SENSITIVE == type || SQLServerResultSet.TYPE_SS_SCROLL_KEYSET == type
|| SQLServerResultSet.TYPE_SS_SERVER_CURSOR_FORWARD_ONLY == type);
}
@Override
public boolean othersDeletesAreVisible(int type) throws SQLServerException {
checkClosed();
checkResultType(type);
return (type == SQLServerResultSet.TYPE_SS_SCROLL_DYNAMIC || SQLServerResultSet.TYPE_FORWARD_ONLY == type
|| SQLServerResultSet.TYPE_SCROLL_SENSITIVE == type || SQLServerResultSet.TYPE_SS_SCROLL_KEYSET == type
|| SQLServerResultSet.TYPE_SS_SERVER_CURSOR_FORWARD_ONLY == type);
}
@Override
public boolean othersInsertsAreVisible(int type) throws SQLServerException {
checkClosed();
checkResultType(type);
return (type == SQLServerResultSet.TYPE_SS_SCROLL_DYNAMIC || SQLServerResultSet.TYPE_FORWARD_ONLY == type
|| SQLServerResultSet.TYPE_SS_SERVER_CURSOR_FORWARD_ONLY == type);
}
@Override
public boolean updatesAreDetected(int type) throws SQLServerException {
checkClosed();
checkResultType(type);
return false;
}
@Override
public boolean deletesAreDetected(int type) throws SQLServerException {
checkClosed();
checkResultType(type);
return (SQLServerResultSet.TYPE_SS_SCROLL_KEYSET == type);
}
// Check the result types to make sure the user does not pass a bad value.
private void checkResultType(int type) throws SQLServerException {
switch (type) {
case ResultSet.TYPE_FORWARD_ONLY:
case ResultSet.TYPE_SCROLL_INSENSITIVE:
case ResultSet.TYPE_SCROLL_SENSITIVE:
// case SQLServerResultSet.TYPE_SS_SCROLL_STATIC: synonym
// TYPE_SCROLL_INSENSITIVE
// case SQLServerResultSet.TYPE_SS_SCROLL_KEYSET: synonym
// TYPE_SCROLL_SENSITIVE
case SQLServerResultSet.TYPE_SS_DIRECT_FORWARD_ONLY:
case SQLServerResultSet.TYPE_SS_SERVER_CURSOR_FORWARD_ONLY:
case SQLServerResultSet.TYPE_SS_SCROLL_DYNAMIC:
return;
default:
// if the value is outside of the valid values throw error.
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_invalidArgument"));
Object[] msgArgs = {type};
throw new SQLServerException(null, form.format(msgArgs), null, 0, true);
}
}
// Check the concurrency values and make sure the value is a supported
// value.
private void checkConcurrencyType(int type) throws SQLServerException {
switch (type) {
case ResultSet.CONCUR_READ_ONLY:
case ResultSet.CONCUR_UPDATABLE:
// case SQLServerResultSet.CONCUR_SS_OPTIMISTIC_CC: synonym
// CONCUR_UPDATABLE
case SQLServerResultSet.CONCUR_SS_SCROLL_LOCKS:
case SQLServerResultSet.CONCUR_SS_OPTIMISTIC_CCVAL:
return;
default:
// if the value is outside of the valid values throw error.
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_invalidArgument"));
Object[] msgArgs = {type};
throw new SQLServerException(null, form.format(msgArgs), null, 0, true);
}
}
@Override
public boolean insertsAreDetected(int type) throws SQLServerException {
checkClosed();
checkResultType(type);
return false;
}
@Override
public boolean supportsBatchUpdates() throws SQLServerException {
checkClosed();
return true;
}
@Override
public java.sql.ResultSet getUDTs(String catalog, String schemaPattern, String typeNamePattern,
int[] types) throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
return getResultSetFromInternalQueries(catalog, "SELECT" +
/* 1 */ " cast(NULL as char(1)) as TYPE_CAT," +
/* 2 */ " cast(NULL as char(1)) as TYPE_SCHEM," +
/* 3 */ " cast(NULL as char(1)) as TYPE_NAME," +
/* 4 */ " cast(NULL as char(1)) as CLASS_NAME," +
/* 5 */ " cast(0 as int) as DATA_TYPE," +
/* 6 */ " cast(NULL as char(1)) as REMARKS," +
/* 7 */ " cast(0 as smallint) as BASE_TYPE" + " where 0 = 1");
}
@Override
public java.sql.Connection getConnection() throws SQLServerException {
checkClosed();
return connection.getConnection();
}
/* JDBC 3.0 */
@Override
public int getSQLStateType() throws SQLServerException {
checkClosed();
if (null != connection && connection.xopenStates)
return sqlStateXOpen;
else
return sqlStateSQL99;
}
@Override
public int getDatabaseMajorVersion() throws SQLServerException {
checkClosed();
String s = connection.sqlServerVersion;
int p = s.indexOf('.');
if (p > 0)
s = s.substring(0, p);
try {
return Integer.parseInt(s);
} catch (NumberFormatException e) {
return 0;
}
}
@Override
public int getDatabaseMinorVersion() throws SQLServerException {
checkClosed();
String s = connection.sqlServerVersion;
int p = s.indexOf('.');
int q = s.indexOf('.', p + 1);
if (p > 0 && q > 0)
s = s.substring(p + 1, q);
try {
return Integer.parseInt(s);
} catch (NumberFormatException e) {
return 0;
}
}
@Override
public int getJDBCMajorVersion() throws SQLServerException {
checkClosed();
return DriverJDBCVersion.MAJOR;
}
@Override
public int getJDBCMinorVersion() throws SQLServerException {
checkClosed();
return DriverJDBCVersion.MINOR;
}
@Override
public int getResultSetHoldability() throws SQLServerException {
checkClosed();
return ResultSet.HOLD_CURSORS_OVER_COMMIT; // Hold over commit is the
// default for SQL Server
}
@Override
public RowIdLifetime getRowIdLifetime() throws SQLException {
checkClosed();
return RowIdLifetime.ROWID_UNSUPPORTED;
}
@Override
public boolean supportsResultSetHoldability(int holdability) throws SQLServerException {
checkClosed();
if (ResultSet.HOLD_CURSORS_OVER_COMMIT == holdability || ResultSet.CLOSE_CURSORS_AT_COMMIT == holdability) {
return true; // supported one a per connection level only, not
// statement by statement
}
// if the value is outside of the valid values throw error.
MessageFormat form = new MessageFormat(SQLServerException.getErrString("R_invalidArgument"));
Object[] msgArgs = {holdability};
throw new SQLServerException(null, form.format(msgArgs), null, 0, true);
}
@Override
public ResultSet getAttributes(String catalog, String schemaPattern, String typeNamePattern,
String attributeNamePattern) throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
return getResultSetFromInternalQueries(catalog, "SELECT" +
/* 1 */ " cast(NULL as char(1)) as TYPE_CAT," +
/* 2 */ " cast(NULL as char(1)) as TYPE_SCHEM," +
/* 3 */ " cast(NULL as char(1)) as TYPE_NAME," +
/* 4 */ " cast(NULL as char(1)) as ATTR_NAME," +
/* 5 */ " cast(0 as int) as DATA_TYPE," +
/* 6 */ " cast(NULL as char(1)) as ATTR_TYPE_NAME," +
/* 7 */ " cast(0 as int) as ATTR_SIZE," +
/* 8 */ " cast(0 as int) as DECIMAL_DIGITS," +
/* 9 */ " cast(0 as int) as NUM_PREC_RADIX," +
/* 10 */ " cast(0 as int) as NULLABLE," +
/* 11 */ " cast(NULL as char(1)) as REMARKS," +
/* 12 */ " cast(NULL as char(1)) as ATTR_DEF," +
/* 13 */ " cast(0 as int) as SQL_DATA_TYPE," +
/* 14 */ " cast(0 as int) as SQL_DATETIME_SUB," +
/* 15 */ " cast(0 as int) as CHAR_OCTET_LENGTH," +
/* 16 */ " cast(0 as int) as ORDINAL_POSITION," +
/* 17 */ " cast(NULL as char(1)) as IS_NULLABLE," +
/* 18 */ " cast(NULL as char(1)) as SCOPE_CATALOG," +
/* 19 */ " cast(NULL as char(1)) as SCOPE_SCHEMA," +
/* 20 */ " cast(NULL as char(1)) as SCOPE_TABLE," +
/* 21 */ " cast(0 as smallint) as SOURCE_DATA_TYPE" + " where 0 = 1");
}
@Override
public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
return getResultSetFromInternalQueries(catalog, "SELECT" +
/* 1 */ " cast(NULL as char(1)) as TYPE_CAT," +
/* 2 */ " cast(NULL as char(1)) as TYPE_SCHEM," +
/* 3 */ " cast(NULL as char(1)) as TYPE_NAME," +
/* 4 */ " cast(NULL as char(1)) as SUPERTABLE_NAME" + " where 0 = 1");
}
@Override
public ResultSet getSuperTypes(String catalog, String schemaPattern, String typeNamePattern) throws SQLException {
if (loggerExternal.isLoggable(Level.FINER) && Util.isActivityTraceOn()) {
loggerExternal.finer(toString() + ACTIVITY_ID + ActivityCorrelator.getCurrent().toString());
}
checkClosed();
return getResultSetFromInternalQueries(catalog, "SELECT" +
/* 1 */ " cast(NULL as char(1)) as TYPE_CAT," +
/* 2 */ " cast(NULL as char(1)) as TYPE_SCHEM," +
/* 3 */ " cast(NULL as char(1)) as TYPE_NAME," +
/* 4 */ " cast(NULL as char(1)) as SUPERTYPE_CAT," +
/* 5 */ " cast(NULL as char(1)) as SUPERTYPE_SCHEM," +
/* 6 */ " cast(NULL as char(1)) as SUPERTYPE_NAME" + " where 0 = 1");
}
@Override
public boolean supportsGetGeneratedKeys() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsMultipleOpenResults() throws SQLServerException {
checkClosed();
return false;
}
@Override
public boolean supportsNamedParameters() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsSavepoints() throws SQLServerException {
checkClosed();
return true;
}
@Override
public boolean supportsStatementPooling() throws SQLException {
checkClosed();
return false;
}
@Override
public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException {
checkClosed();
return true;
}
@Override
public boolean locatorsUpdateCopy() throws SQLException {
checkClosed();
return true;
}
/* -------------- MSSQL-JDBC Extension methods start here --------------- */
/**
* Returns the database compatibility level setting for the current database. This is useful if the database's
* compatibility level is lower than the engine version. In this case the database will only support SQL commands at
* its compatibility level, and not the wider set of commands accepted by the engine.
*
* @return the database compatibility level value (from sys.databases table).
* @throws SQLException
* if error getting compatability level
*/
public int getDatabaseCompatibilityLevel() throws SQLException {
checkClosed();
String database = connection.getCatalog();
SQLServerResultSet rs = getResultSetFromInternalQueries(null,
"select name, compatibility_level from sys.databases where name = '" + database + "'");
if (!rs.next()) {
return 0;
}
return rs.getInt("compatibility_level");
}
}
/**
* Provides filter to convert DATA_TYPE column values from the ODBC types returned by SQL Server to their equivalent
* JDBC types.
*/
final class DataTypeFilter extends IntColumnFilter {
private static final int ODBC_SQL_GUID = -11;
private static final int ODBC_SQL_WCHAR = -8;
private static final int ODBC_SQL_WVARCHAR = -9;
private static final int ODBC_SQL_WLONGVARCHAR = -10;
private static final int ODBC_SQL_FLOAT = 6;
private static final int ODBC_SQL_TIME = -154;
private static final int ODBC_SQL_XML = -152;
private static final int ODBC_SQL_UDT = -151;
int oneValueToAnother(int odbcType) {
switch (odbcType) {
case ODBC_SQL_FLOAT:
return JDBCType.DOUBLE.asJavaSqlType();
case ODBC_SQL_GUID:
return JDBCType.CHAR.asJavaSqlType();
case ODBC_SQL_WCHAR:
return JDBCType.NCHAR.asJavaSqlType();
case ODBC_SQL_WVARCHAR:
return JDBCType.NVARCHAR.asJavaSqlType();
case ODBC_SQL_WLONGVARCHAR:
return JDBCType.LONGNVARCHAR.asJavaSqlType();
case ODBC_SQL_TIME:
return JDBCType.TIME.asJavaSqlType();
case ODBC_SQL_XML:
return SSType.XML.getJDBCType().asJavaSqlType();
case ODBC_SQL_UDT:
return SSType.UDT.getJDBCType().asJavaSqlType();
default:
return odbcType;
}
}
}
class ZeroFixupFilter extends IntColumnFilter {
int oneValueToAnother(int precl) {
if (0 == precl)
return DataTypes.MAX_VARTYPE_MAX_BYTES;
else
return precl;
}
}
/**
* Converts one value to another solely based on the column integer value. Apply to integer columns only
*/
abstract class IntColumnFilter extends ColumnFilter {
abstract int oneValueToAnother(int value);
final Object apply(Object value, JDBCType asJDBCType) throws SQLServerException {
if (null == value)
return value;
// Assumption: values will only be requested in integral or textual
// format
// (i.e. not as float, double, BigDecimal, Boolean or bytes). A request
// to return
// a value as anything else results in an exception being thrown.
switch (asJDBCType) {
case INTEGER:
return oneValueToAnother((Integer) value);
case SMALLINT: // small and tinyint returned as short
case TINYINT:
return (short) oneValueToAnother(((Short) value).intValue());
case BIGINT:
return (long) oneValueToAnother(((Long) value).intValue());
case CHAR:
case VARCHAR:
case LONGVARCHAR:
return Integer.toString(oneValueToAnother(Integer.parseInt((String) value)));
default:
DataTypes.throwConversionError("int", asJDBCType.toString());
return value;
}
}
}
/**
* Provides filter to convert int identity column values from 0,1 to YES, NO There is a mismatch between what the stored
* proc returns and what the JDBC spec expects.
*/
class IntColumnIdentityFilter extends ColumnFilter {
final Object apply(Object value, JDBCType asJDBCType) throws SQLServerException {
if (null == value)
return value;
// Assumption: values will only be requested in integral or textual
// format
// (i.e. not as float, double, BigDecimal, Boolean or bytes). A request
// to return
// a value as anything else results in an exception being thrown.
switch (asJDBCType) {
case INTEGER:
case SMALLINT:
// This is a way for us to make getObject return a string, not
// an
// integer. What this means is that getInt/getShort also will
// return a string.
// However the identity column in the JDBC spec is supposed to
// return a
// string by default. To get to that default behavior right we
// are deliberately breaking
// the getInt/getShort behavior which should really error
// anyways. Only thing is that
// the user will get a cast exception in this case.
assert (value instanceof Number);
return Util.zeroOneToYesNo(((Number) value).intValue());
case CHAR:
case VARCHAR:
case LONGVARCHAR:
assert (value instanceof String);
return Util.zeroOneToYesNo(Integer.parseInt((String) value));
default:
DataTypes.throwConversionError("char", asJDBCType.toString());
return value;
}
}
}
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