package org.apache.torque.engine.platform;
/*
* Copyright 2003-2004 The Apache Software Foundation.
*
* Licensed 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.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import org.apache.torque.engine.database.model.Domain;
import org.apache.torque.engine.database.model.SchemaType;
/**
* Default implementation for the Platform interface.
*
* @author <a href="mailto:mpoeschl@marmot.at">Martin Poeschl</a>
* @version $Id: PlatformDefaultImpl.java,v 1.9 2004/02/22 06:27:19 jmcnally Exp $
*/
public class PlatformDefaultImpl implements Platform
{
private Map schemaDomainMap;
/**
* Default constructor.
*/
public PlatformDefaultImpl()
{
initialize();
}
private void initialize()
{
schemaDomainMap = new Hashtable(30);
Iterator iter = SchemaType.iterator();
while (iter.hasNext())
{
SchemaType type = (SchemaType) iter.next();
schemaDomainMap.put(type, new Domain(type));
}
schemaDomainMap.put(SchemaType.BOOLEANCHAR,
new Domain(SchemaType.BOOLEANCHAR, "CHAR"));
schemaDomainMap.put(SchemaType.BOOLEANINT,
new Domain(SchemaType.BOOLEANINT, "INTEGER"));
}
protected void setSchemaDomainMapping(Domain domain)
{
schemaDomainMap.put(domain.getType(), domain);
}
/**
* @see Platform#getMaxColumnNameLength()
*/
public int getMaxColumnNameLength()
{
return 64;
}
/**
* @see Platform#getNativeIdMethod()
*/
public String getNativeIdMethod()
{
return Platform.IDENTITY;
}
/**
* @see Platform#getDomainForJdbcType(SchemaType)
*/
public Domain getDomainForSchemaType(SchemaType jdbcType)
{
return (Domain) schemaDomainMap.get(jdbcType);
}
/**
* @return Only produces a SQL fragment if null values are
* disallowed.
* @see Platform#getNullString(boolean)
*/
public String getNullString(boolean notNull)
{
// TODO: Check whether this is true for all DBs. Also verify
// the old Sybase templates.
return (notNull ? "NOT NULL" : "");
}
/**
* @see Platform#getAutoIncrement()
*/
public String getAutoIncrement()
{
return "IDENTITY";
}
/**
* @see Platform#hasScale(String)
* TODO collect info for all platforms
*/
public boolean hasScale(String sqlType)
{
return true;
}
/**
* @see Platform#hasSize(String)
* TODO collect info for all platforms
*/
public boolean hasSize(String sqlType)
{
return true;
}
}