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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.dialect;
import java.sql.CallableStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Iterator;
import java.util.Map;
import org.hibernate.LockMode;
import org.hibernate.LockOptions;
import org.hibernate.cfg.Environment;
import org.hibernate.dialect.function.CommonFunctionFactory;
import org.hibernate.dialect.function.SybaseLocateEmulationFunctionTemplate;
import org.hibernate.dialect.identity.AbstractTransactSQLIdentityColumnSupport;
import org.hibernate.dialect.identity.IdentityColumnSupport;
import org.hibernate.query.sqm.consume.multitable.internal.StandardIdTableSupport;
import org.hibernate.query.sqm.consume.multitable.spi.IdTableStrategy;
import org.hibernate.query.sqm.consume.multitable.spi.idtable.LocalTemporaryTableStrategy;
import org.hibernate.query.sqm.produce.function.SqmFunctionRegistry;
import org.hibernate.query.sqm.produce.function.spi.ConcatFunctionTemplate;
import org.hibernate.type.spi.StandardSpiBasicTypes;
/**
* An abstract base class for Sybase and MS SQL Server dialects.
*
* @author Gavin King
*/
abstract class AbstractTransactSQLDialect extends Dialect {
public AbstractTransactSQLDialect() {
super();
registerColumnType( Types.BINARY, "binary($l)" );
registerColumnType( Types.BIT, "tinyint" );
registerColumnType( Types.BIGINT, "numeric(19,0)" );
registerColumnType( Types.SMALLINT, "smallint" );
registerColumnType( Types.TINYINT, "smallint" );
registerColumnType( Types.INTEGER, "int" );
registerColumnType( Types.CHAR, "char(1)" );
registerColumnType( Types.VARCHAR, "varchar($l)" );
registerColumnType( Types.FLOAT, "float" );
registerColumnType( Types.DOUBLE, "double precision" );
registerColumnType( Types.DATE, "datetime" );
registerColumnType( Types.TIME, "datetime" );
registerColumnType( Types.TIMESTAMP, "datetime" );
registerColumnType( Types.VARBINARY, "varbinary($l)" );
registerColumnType( Types.NUMERIC, "numeric($p,$s)" );
registerColumnType( Types.BLOB, "image" );
registerColumnType( Types.CLOB, "text" );
getDefaultProperties().setProperty( Environment.STATEMENT_BATCH_SIZE, NO_BATCH );
}
@Override
public void initializeFunctionRegistry(SqmFunctionRegistry registry) {
super.initializeFunctionRegistry( registry );
registry.namedTemplateBuilder( "ascii" )
.setInvariantType( StandardSpiBasicTypes.INTEGER )
.setExactArgumentCount( 1 )
.register();
registry.namedTemplateBuilder( "char" )
.setInvariantType( StandardSpiBasicTypes.CHARACTER )
.setExactArgumentCount( 1 )
.register();
registry.namedTemplateBuilder( "len" )
.setInvariantType( StandardSpiBasicTypes.LONG )
.setExactArgumentCount( 1 )
.register();
CommonFunctionFactory.lower( registry );
CommonFunctionFactory.upper( registry );
registry.namedTemplateBuilder( "str" )
.setInvariantType( StandardSpiBasicTypes.STRING )
.setArgumentCountBetween( 1, 3 )
.register();
registry.namedTemplateBuilder( "ltrim" )
.setInvariantType( StandardSpiBasicTypes.STRING )
.setExactArgumentCount( 1 )
.register();
registry.namedTemplateBuilder( "rtrim" )
.setInvariantType( StandardSpiBasicTypes.STRING )
.setExactArgumentCount( 1 )
.register();
registry.namedTemplateBuilder( "reverse" )
.setInvariantType( StandardSpiBasicTypes.STRING )
.setExactArgumentCount( 1 )
.register();
registry.namedTemplateBuilder( "space" )
.setInvariantType( StandardSpiBasicTypes.STRING )
.setExactArgumentCount( 1 )
.register();
registry.registerNoArgs( "user", StandardSpiBasicTypes.STRING );
registry.registerNoArgs( "current_timestamp", StandardSpiBasicTypes.TIMESTAMP );
registry.registerNoArgs( "current_time", StandardSpiBasicTypes.TIME );
registry.registerNoArgs( "current_date", StandardSpiBasicTypes.DATE );
registry.noArgsBuilder( "getdate" )
.setInvariantType( StandardSpiBasicTypes.TIMESTAMP )
.setUseParenthesesWhenNoArgs( true )
.register();
registry.noArgsBuilder( "getutcdate" )
.setInvariantType( StandardSpiBasicTypes.TIMESTAMP )
.setUseParenthesesWhenNoArgs( true )
.register();
registry.namedTemplateBuilder( "day" )
.setInvariantType( StandardSpiBasicTypes.INTEGER )
.setExactArgumentCount( 1 )
.register();
registry.namedTemplateBuilder( "month" )
.setInvariantType( StandardSpiBasicTypes.INTEGER )
.setExactArgumentCount( 1 )
.register();
registry.namedTemplateBuilder( "year" )
.setInvariantType( StandardSpiBasicTypes.INTEGER )
.setExactArgumentCount( 1 )
.register();
registry.namedTemplateBuilder( "datename" )
.setInvariantType( StandardSpiBasicTypes.STRING )
.setExactArgumentCount( 2 )
.register();
CommonFunctionFactory.abs( registry );
CommonFunctionFactory.sign( registry );
CommonFunctionFactory.acos( registry );
CommonFunctionFactory.asin( registry );
CommonFunctionFactory.atan( registry );
CommonFunctionFactory.cos( registry );
CommonFunctionFactory.cot( registry );
CommonFunctionFactory.exp( registry );
CommonFunctionFactory.log( registry );
CommonFunctionFactory.log10( registry );
CommonFunctionFactory.sin( registry );
CommonFunctionFactory.sqrt( registry );
CommonFunctionFactory.tan( registry );
CommonFunctionFactory.sin( registry );
registry.noArgsBuilder( "pi" )
.setInvariantType( StandardSpiBasicTypes.DOUBLE )
.setUseParenthesesWhenNoArgs( true )
.register();
registry.namedTemplateBuilder( "square" )
.setExactArgumentCount( 1 )
.register();
CommonFunctionFactory.rand( registry );
CommonFunctionFactory.radians( registry );
CommonFunctionFactory.degrees( registry );
CommonFunctionFactory.round( registry );
CommonFunctionFactory.ceiling( registry );
CommonFunctionFactory.floor( registry );
registry.namedTemplateBuilder( "isnull" )
.setExactArgumentCount( 2 )
.register();
registry.register( "concat", new ConcatFunctionTemplate( "(", "+", ")" ) );
registry.registerAlternateKey( "length", "len" );
registry.registerPattern( "trim", "ltrim(rtrim(?1))", StandardSpiBasicTypes.STRING );
registry.register( "locate", new SybaseLocateEmulationFunctionTemplate() );
}
@Override
public String getAddColumnString() {
return "add";
}
@Override
public String getNullColumnString() {
return "";
}
@Override
public boolean qualifyIndexName() {
return false;
}
@Override
public String getForUpdateString() {
return "";
}
@Override
public String appendLockHint(LockOptions lockOptions, String tableName) {
return lockOptions.getLockMode().greaterThan( LockMode.READ ) ? tableName + " holdlock" : tableName;
}
@Override
public String applyLocksToSql(String sql, LockOptions aliasedLockOptions, Map keyColumnNames) {
// TODO: merge additional lockoptions support in Dialect.applyLocksToSql
final Iterator itr = aliasedLockOptions.getAliasLockIterator();
final StringBuilder buffer = new StringBuilder( sql );
while ( itr.hasNext() ) {
final Map.Entry entry = (Map.Entry) itr.next();
final LockMode lockMode = (LockMode) entry.getValue();
if ( lockMode.greaterThan( LockMode.READ ) ) {
final String alias = (String) entry.getKey();
int start = -1;
int end = -1;
if ( sql.endsWith( " " + alias ) ) {
start = ( buffer.length() - alias.length() );
end = start + alias.length();
}
else {
int position = buffer.indexOf( " " + alias + " " );
if ( position <= -1 ) {
position = buffer.indexOf( " " + alias + "," );
}
if ( position > -1 ) {
start = position + 1;
end = start + alias.length();
}
}
if ( start > -1 ) {
final String lockHint = appendLockHint( aliasedLockOptions, alias );
buffer.replace( start, end, lockHint );
}
}
}
return buffer.toString();
}
@Override
public int registerResultSetOutParameter(CallableStatement statement, int col) throws SQLException {
// sql server just returns automatically
return col;
}
@Override
public ResultSet getResultSet(CallableStatement ps) throws SQLException {
boolean isResultSet = ps.execute();
// This assumes you will want to ignore any update counts
while ( !isResultSet && ps.getUpdateCount() != -1 ) {
isResultSet = ps.getMoreResults();
}
// You may still have other ResultSets or update counts left to process here
// but you can't do it now or the ResultSet you just got will be closed
return ps.getResultSet();
}
@Override
public boolean supportsCurrentTimestampSelection() {
return true;
}
@Override
public boolean isCurrentTimestampSelectStringCallable() {
return false;
}
@Override
public String getCurrentTimestampSelectString() {
return "select getdate()";
}
@Override
public IdTableStrategy getDefaultIdTableStrategy() {
final StandardIdTableSupport idTableSupport = new StandardIdTableSupport( getIdTableExporter() ) {
@Override
protected String determineIdTableName(String baseName) {
return "#" + baseName;
}
};
return new LocalTemporaryTableStrategy( idTableSupport );
}
@Override
public String getSelectGUIDString() {
return "select newid()";
}
// Overridden informational metadata ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@Override
public boolean supportsEmptyInList() {
return false;
}
@Override
public boolean supportsUnionAll() {
return true;
}
@Override
public boolean supportsExistsInSelect() {
return false;
}
@Override
public boolean doesReadCommittedCauseWritersToBlockReaders() {
return true;
}
@Override
public boolean doesRepeatableReadCauseReadersToBlockWriters() {
return true;
}
@Override
public boolean supportsTupleDistinctCounts() {
return false;
}
@Override
public boolean supportsTuplesInSubqueries() {
return false;
}
@Override
public IdentityColumnSupport getIdentityColumnSupport() {
return new AbstractTransactSQLIdentityColumnSupport();
}
@Override
public boolean supportsPartitionBy() {
return true;
}
}