frontbasedialect.java

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package net.sf.hibernate.dialect;

import java.sql.Types;

/**
 * An SQL Dialect for Frontbase.  Assumes you're using the latest version
 * of the FrontBase JDBC driver, available from <tt>http://frontbase.com/</tt>
 * <p>
 * <b>NOTE</b>: The latest JDBC driver is not always included with the
 * latest release of FrontBase.  Download the driver separately, and enjoy
 * the informative release notes.
 * <p>
 * This dialect was tested with JDBC driver version 2.3.1.  This driver
 * contains a bug that causes batches of updates to fail.  (The bug should be
 * fixed in the next release of the JDBC driver.)  If you are using JDBC driver
 * 2.3.1, you can work-around this problem by setting the following in your
 * <tt>hibernate.properties</tt> file: <tt>hibernate.jdbc.batch_size=15</tt>
 *
 * @author Ron Lussier <tt>[e-mail]</tt>
 */
public class FrontBaseDialect extends Dialect {

	public FrontBaseDialect() {
		super();

		registerColumnType( Types.BIT, "BIT" );
		registerColumnType( Types.BIGINT, "LONGINT" );
		registerColumnType( Types.SMALLINT, "SMALLINT" );
		registerColumnType( Types.TINYINT, "TINYINT" );
		registerColumnType( Types.INTEGER, "INTEGER" );
		registerColumnType( Types.CHAR, "CHAR(1)" );
		registerColumnType( Types.VARCHAR, "VARCHAR($l)" );
		registerColumnType( Types.FLOAT, "FLOAT" );
		registerColumnType( Types.DOUBLE, "DOUBLE PRECISION" );
		registerColumnType( Types.DATE, "DATE" );
		registerColumnType( Types.TIME, "TIME" );
		registerColumnType( Types.TIMESTAMP, "TIMESTAMP" );
		registerColumnType( Types.VARBINARY, "BIT VARYING($l)" );
		registerColumnType( Types.NUMERIC, "NUMERIC(19, $l)" );
		registerColumnType( Types.BLOB, "BLOB" );
		registerColumnType( Types.CLOB, "CLOB" );
	}

	public String getAddColumnString() {
		return "add column";
	}

	public String getCascadeConstraintsString() {
		return " cascade";
	}

	/**
	 * Does this dialect support the <tt>FOR UPDATE</tt> syntax. No!
	 *
	 * @return false always. FrontBase doesn't support this syntax,
	 * which was dropped with SQL92
	 */
	public boolean supportsForUpdate() {
		return false;
	}

}