/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-04 The eXist Project
* http://exist-db.org
*
* 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.
*
* $Id$
*/
package org.exist.util.serializer;
import org.apache.commons.pool.KeyedPoolableObjectFactory;
import org.apache.commons.pool.impl.StackKeyedObjectPool;
import org.exist.storage.serializers.Serializer;
/**
* @author wolf
*
*/
public class SerializerPool extends StackKeyedObjectPool {
private final static SerializerPool instance = new SerializerPool(new SerializerObjectFactory(), 10, 1);
public final static SerializerPool getInstance() {
return instance;
}
/**
*
*/
public SerializerPool(KeyedPoolableObjectFactory factory, int max, int init) {
super(factory, max, init);
}
public synchronized Object borrowObject(Object key) {
try {
return super.borrowObject(key);
} catch (Exception e) {
throw new IllegalStateException("Error while creating serializer: " + e.getMessage());
}
}
public DOMStreamer borrowDOMStreamer(Serializer delegate) {
try {
ExtendedDOMStreamer serializer = (ExtendedDOMStreamer)borrowObject(DOMStreamer.class);
serializer.setSerializer(delegate);
return serializer;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public synchronized void returnObject(Object obj) {
if (obj == null)
return;
try {
super.returnObject(obj.getClass(), obj);
} catch (Exception e) {
throw new IllegalStateException("Error while returning serializer: " + e.getMessage());
}
}
}