//$Id: PointbaseDialect.java 9328 2006-02-23 17:32:47Z steveebersole $
//Created on 04 February 2002, 17:35
package org.hibernate.dialect;
import org.hibernate.dialect.lock.LockingStrategy;
import org.hibernate.dialect.lock.UpdateLockingStrategy;
import org.hibernate.dialect.lock.SelectLockingStrategy;
import org.hibernate.persister.entity.Lockable;
import org.hibernate.LockMode;
import java.sql.Types;
/**
* A <tt>Dialect</tt> for Pointbase.
* @author Ed Mackenzie
*/
public class PointbaseDialect extends org.hibernate.dialect.Dialect {
/**
* Creates new PointbaseDialect
*/
public PointbaseDialect() {
super();
registerColumnType( Types.BIT, "smallint" ); //no pointbase BIT
registerColumnType( Types.BIGINT, "bigint" );
registerColumnType( Types.SMALLINT, "smallint" );
registerColumnType( Types.TINYINT, "smallint" ); //no pointbase TINYINT
registerColumnType( Types.INTEGER, "integer" );
registerColumnType( Types.CHAR, "char(1)" );
registerColumnType( Types.VARCHAR, "varchar($l)" );
registerColumnType( Types.FLOAT, "float" );
registerColumnType( Types.DOUBLE, "double precision" );
registerColumnType( Types.DATE, "date" );
registerColumnType( Types.TIME, "time" );
registerColumnType( Types.TIMESTAMP, "timestamp" );
//the BLOB type requires a size arguement - this defaults to
//bytes - no arg defaults to 1 whole byte!
//other argument mods include K - kilobyte, M - megabyte, G - gigabyte.
//refer to the PBdevelopers guide for more info.
registerColumnType( Types.VARBINARY, "blob($l)" );
registerColumnType( Types.NUMERIC, "numeric($p,$s)" );
}
public String getAddColumnString() {
return "add";
}
public boolean dropConstraints() {
return false;
}
public String getCascadeConstraintsString() {
return " cascade";
}
public String getForUpdateString() {
return "";
}
public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
// Pointbase has no known variation of a "SELECT ... FOR UPDATE" syntax...
if ( lockMode.greaterThan( LockMode.READ ) ) {
return new UpdateLockingStrategy( lockable, lockMode );
}
else {
return new SelectLockingStrategy( lockable, lockMode );
}
}
}