package org.apache.torque.templates.platform;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
import org.apache.torque.templates.typemapping.SchemaType;
import org.apache.torque.templates.typemapping.SqlType;
/**
* MS SQL Platform implementation.
*
* @author <a href="mailto:mpoeschl@marmot.at">Martin Poeschl</a>
* @author <a href="mailto:greg.monroe@dukece.com">Greg Monroe</a>
* @version $Id: PlatformMssqlImpl.java 1439644 2013-01-28 21:30:20Z tfischer $
*/
public class PlatformMssqlImpl extends PlatformDefaultImpl
{
/** The date format for formatting database dates. */
private static final String DATE_FORMAT = "''yyyyMMdd HH:mm:ss''";
/**
* Default constructor.
*/
public PlatformMssqlImpl()
{
super();
initialize();
}
/**
* Initializes db specific domain mapping.
*/
private void initialize()
{
setSchemaTypeToSqlTypeMapping(
SchemaType.INTEGER,
new SqlType("INT"));
setSchemaTypeToSqlTypeMapping(
SchemaType.BOOLEANINT,
new SqlType("INT"));
setSchemaTypeToSqlTypeMapping(
SchemaType.DOUBLE,
new SqlType("FLOAT"));
setSchemaTypeToSqlTypeMapping(
SchemaType.LONGVARCHAR,
new SqlType("TEXT"));
setSchemaTypeToSqlTypeMapping(
SchemaType.TIMESTAMP,
new SqlType("DATETIME"));
setSchemaTypeToSqlTypeMapping(
SchemaType.BINARY,
new SqlType("BINARY"));
setSchemaTypeToSqlTypeMapping(
SchemaType.VARBINARY,
new SqlType("IMAGE"));
setSchemaTypeToSqlTypeMapping(
SchemaType.LONGVARBINARY,
new SqlType("IMAGE"));
setSchemaTypeToSqlTypeMapping(
SchemaType.BLOB,
new SqlType("IMAGE"));
setSchemaTypeToSqlTypeMapping(
SchemaType.CLOB,
new SqlType("TEXT"));
}
/**
* @return Explicitly returns <code>NULL</code> if null values are
* allowed (as recomended by Microsoft).
* @see Platform#getNullString(boolean)
*/
@Override
public String getNullString(boolean notNull)
{
return (notNull ? "NOT NULL" : "NULL");
}
@Override
protected boolean escapeBackslashes()
{
return false;
}
/**
* {@inheritDoc}
*/
public String getTimestampString(Date date)
{
SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT);
dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
return dateFormat.format(date);
}
/**
* Returns whether the database has schema support where a schema
* is not tied to a user (oracle) or database (mysql), but can be created
* separately.
*
* @return this implementation returns true.
*/
public boolean usesStandaloneSchema()
{
return true;
}
/**
* @see Platform#hasSize(String)
*/
@Override
public boolean hasSize(String sqlType)
{
return !("IMAGE".equals(sqlType) || "TEXT".equals(sqlType));
}
}