/*
* 14/06/2004 - 23:12:27
*
* $RCSfile: CacheIdManagerImpl.java,v $ - JDBF Object Relational mapping system
* Copyright (C) 2002-2004 JDBF Development Team
*
* http://jdbf.sourceforge.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
*
* $Id: CacheIdManagerImpl.java,v 1.1 2004/06/28 22:08:46 gmartone Exp $
*/
package org.jdbf.engine.caching;
import java.util.List;
import org.jdbf.engine.basic.ObjectMapped;
import org.jdbf.engine.basic.PrimaryKey;
import org.jdbf.engine.mapping.ItemDescriptor;
import org.jdbf.engine.mapping.PrimaryKeyMap;
import org.jdbf.engine.mapping.MappingException;
import org.jdbf.engine.reflection.ReflectionManager;
/**
* <code>CacheIdManager</code> handles the creation of cache id for object.<br>
* Cache id value is created appending all value fo al primary key for this object.
*
*
* @author Giovanni Martone<br>
* @version $Revision: 1.1 $<br>
* last changed by $Author: gmartone $
*/
public class CacheIdManagerImpl implements CacheIdManager {
/**
* Creates an empty object
*/
public CacheIdManagerImpl() {}
/**
*
* Creates id cache for an object specified in obj.
*
* Value of cache id is created on value of primary key.
*
* @param pk PrimaryKeyMap
* @param object ObjectMapped
* @return String cache id
* @throws CacheException
*
*/
public String createCacheId(PrimaryKeyMap pk,
ObjectMapped object)
throws CacheException{
String str = null;
try{
StringBuffer buf = new StringBuffer();
List pks = pk.getPrimaryKey();
for(int i = 0; i < pks.size(); i++){
ItemDescriptor item = (ItemDescriptor)pks.get(i);
String pkName = item.getPropertyName();
Object value = ReflectionManager.getValueByName(
object,pkName);
buf.append(value);
str = buf.toString();
}
}
catch(MappingException e){
throw new CacheException(e);
}
return str;
}
/**
*
* Creates id cache for an object.
*
* Value of cache id is created on value of primary key
* specified in pk parameter.
*
* @param pk PrimaryKey
* @param pkMap PrimaryKeyMap
* @return String cache id
* @throws CacheException
*
*/
public String createCacheId(PrimaryKey pk,PrimaryKeyMap pkMap)
throws CacheException {
String str = null;
try{
StringBuffer buf = new StringBuffer();
List pks = pkMap.getPrimaryKey();
for(int i = 0; i < pks.size(); i++){
ItemDescriptor item = (ItemDescriptor)pks.get(i);
String pkName = item.getPropertyName();
Object value = pk.getValueKey(pkName);
buf.append(value);
str = buf.toString();
}
}
catch(Exception e){
throw new CacheException(e);
}
return str;
}
}