/* $Id: ObjectFactory.java,v 1.1 2011/05/04 22:37:45 willuhn Exp $
This file is part of HBCI4Java
Copyright (C) 2001-2008 Stefan Palme
HBCI4Java is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
HBCI4Java 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.kapott.hbci.tools;
import java.util.ArrayList;
import java.util.Collection;
public class ObjectFactory
{
protected final Collection<Object> freeObjects;
protected final Collection<Object> usedObjects;
private final int maxPoolSize;
protected int currentPoolSize;
public ObjectFactory()
{
this(10);
}
public ObjectFactory(int maxPoolSize)
{
this.freeObjects=new ArrayList<Object>();
this.usedObjects=new ArrayList<Object>();
this.maxPoolSize=maxPoolSize;
this.currentPoolSize=0;
}
public synchronized Object getFreeObject()
{
if (freeObjects.isEmpty()) {
return null;
}
Object ret=freeObjects.iterator().next();
freeObjects.remove(ret);
currentPoolSize--;
// HBCIUtils.log("returning unused object, new: "+toString(),HBCIUtils.LOG_DEBUG);
return ret;
}
public synchronized void addToUsedPool(Object o)
{
// HBCIUtils.log("trying to add object to used pool",HBCIUtils.LOG_DEBUG);
if (o!=null && currentPoolSize<maxPoolSize) {
usedObjects.add(o);
currentPoolSize++;
// HBCIUtils.log("ok; new: "+toString(),HBCIUtils.LOG_DEBUG);
}
}
public synchronized void addToFreePool(Object o)
{
// HBCIUtils.log("trying to add object to free pool",HBCIUtils.LOG_DEBUG);
if (o!=null && currentPoolSize<maxPoolSize) {
freeObjects.add(o);
currentPoolSize++;
// HBCIUtils.log("ok; new: "+toString(),HBCIUtils.LOG_DEBUG);
}
}
public synchronized void unuseObject(Object o)
{
if (usedObjects.remove(o)) {
freeObjects.add(o);
// HBCIUtils.log("removed an object from used pool; new: "+toString(),HBCIUtils.LOG_DEBUG);
}
}
public String toString()
{
StringBuffer ret=new StringBuffer();
ret.append("used:").append(usedObjects.size()).append(" free:").append(freeObjects.size()).append(" maxsize:").append(maxPoolSize);
/*
for (Iterator i=usedObjects.iterator();i.hasNext();) {
ret.append(System.getProperty("line.separator"));
Object o=i.next();
if (o instanceof SyntaxElement)
ret.append("used: "+((SyntaxElement)o).toString(0));
else if (o instanceof MultipleSyntaxElements)
ret.append("used: "+((MultipleSyntaxElements)o).toString(0));
else
ret.append("used: "+o.toString());
}
*/
return ret.toString();
}
public synchronized Collection<Object> getUsedObjects()
{
return usedObjects;
}
public synchronized Collection<Object> getFreeObjects()
{
return freeObjects;
}
}