sybasedialect.java

人力资源管理系统主要包括：人员管理、招聘管理、培训管理、奖惩管理和薪金管理五大管理模块。

//$Id: SybaseDialect.java,v 1.7.2.4 2004/01/10 12:02:02 oneovthafew Exp $
package net.sf.hibernate.dialect;

import java.sql.Types;

import net.sf.hibernate.cfg.Environment;

/**
 * An SQL dialect compatible with Sybase and MS SQL Server.
 * @author Gavin King
 */

public class SybaseDialect extends Dialect {
	public SybaseDialect() {
		super();
		registerColumnType( Types.BIT, "TINYINT" ); //Sybase BIT type does not support null values
		registerColumnType( Types.BIGINT, "NUMERIC(19,0)" );
		registerColumnType( Types.SMALLINT, "SMALLINT" );
		registerColumnType( Types.TINYINT, "TINYINT" );
		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(19,$l)" );
		registerColumnType( Types.BLOB, "IMAGE" );
		registerColumnType( Types.CLOB, "TEXT" );
		
		getDefaultProperties().setProperty(Environment.USE_OUTER_JOIN, "true");
		getDefaultProperties().setProperty(Environment.STATEMENT_BATCH_SIZE, NO_BATCH);
	}
	
	public String getAddColumnString() {
		return "add";
	}
	public String getNullColumnString() {
		return " null";
	}
	public boolean qualifyIndexName() {
		return false;
	}
	
	public boolean supportsForUpdate() {
		return false;
	}
	
	public boolean supportsIdentityColumns() {
		return true;
	}
	public String getIdentitySelectString() {
		return "select @@identity";
	}
	public String getIdentityColumnString() {
		return "IDENTITY NOT NULL";
	}
	
	public String getNoColumnsInsertString() {
		return "DEFAULT VALUES";
	}
	
	public char closeQuote() {
		return ']';
	}

	public char openQuote() {
		return '[';
	}

	public String appendIdentitySelectToInsert(String insertSQL) {
		return insertSQL + "\nselect @@identity";
	}

}