com.mchange.v2.resourcepool.ResourcePoolEventSupport Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of guiced-persistence-c3p0 Show documentation
Enables C3P0 with Hibernate connections in the GuicedPersistence provider Requires JDK 8 and up
There is a newer version: 62
Show newest version
/*
 * Distributed as part of c3p0 v.0.9.5.3
 *
 * Copyright (C) 2018 Machinery For Change, Inc.
 *
 * Author: Steve Waldman 
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of EITHER:
 *
 *     1) The GNU Lesser General Public License (LGPL), version 2.1, as 
 *        published by the Free Software Foundation
 *
 * OR
 *
 *     2) The Eclipse Public License (EPL), version 1.0
 *
 * You may choose which license to accept if you wish to redistribute
 * or modify this work. You may offer derivatives of this work
 * under the license you have chosen, or you may provide the same
 * choice of license which you have been offered here.
 *
 * This software 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.
 *
 * You should have received copies of both LGPL v2.1 and EPL v1.0
 * along with this software; see the files LICENSE-EPL and LICENSE-LGPL.
 * If not, the text of these licenses are currently available at
 *
 * LGPL v2.1: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 *  EPL v1.0: http://www.eclipse.org/org/documents/epl-v10.php 
 * 
 */

package com.mchange.v2.resourcepool;

import java.util.*;

public class ResourcePoolEventSupport
{
    ResourcePool source;
    Set          mlisteners = new HashSet();

    public ResourcePoolEventSupport(ResourcePool source)
    { this.source = source; }

    public synchronized void addResourcePoolListener(ResourcePoolListener mlistener)
    {mlisteners.add(mlistener);}

    public synchronized void removeResourcePoolListener(ResourcePoolListener mlistener)
    {mlisteners.remove(mlistener);}

    public synchronized void fireResourceAcquired( Object       resc,
						   int          pool_size,
						   int          available_size,
						   int          removed_but_unreturned_size )
    {
	if (! mlisteners.isEmpty() )
	    {
		ResourcePoolEvent evt = new ResourcePoolEvent(source,
							      resc,
							      false,
							      pool_size,
							      available_size,
							      removed_but_unreturned_size );
		for (Iterator i = mlisteners.iterator(); i.hasNext();)
		    {
			ResourcePoolListener rpl = (ResourcePoolListener) i.next();
			rpl.resourceAcquired(evt);
		    }
	    }
    }

    public synchronized void fireResourceCheckedIn( Object       resc,
						    int          pool_size,
						    int          available_size,
						    int          removed_but_unreturned_size )
    {
	if (! mlisteners.isEmpty() )
	    {
		ResourcePoolEvent evt = new ResourcePoolEvent(source,
							      resc,
							      false,
							      pool_size,
							      available_size,
							      removed_but_unreturned_size );
		for (Iterator i = mlisteners.iterator(); i.hasNext();)
		    {
			ResourcePoolListener rpl = (ResourcePoolListener) i.next();
			rpl.resourceCheckedIn(evt);
		    }
	    }
    }

    public synchronized void fireResourceCheckedOut( Object       resc,
						     int          pool_size,
						     int          available_size,
						     int          removed_but_unreturned_size )
    {
	if (! mlisteners.isEmpty() )
	    {
		ResourcePoolEvent evt = new ResourcePoolEvent(source,
							      resc,
							      true,
							      pool_size,
							      available_size,
							      removed_but_unreturned_size );
		for (Iterator i = mlisteners.iterator(); i.hasNext();)
		    {
			ResourcePoolListener rpl = (ResourcePoolListener) i.next();
			rpl.resourceCheckedOut(evt);
		    }
	    }
    }

    public synchronized void fireResourceRemoved( Object       resc,
						  boolean      checked_out_resource,
						  int          pool_size,
						  int          available_size,
						  int          removed_but_unreturned_size )
    {
	if (! mlisteners.isEmpty() )
	    {
		ResourcePoolEvent evt = new ResourcePoolEvent(source,
							      resc,
							      checked_out_resource,
							      pool_size,
							      available_size,
							      removed_but_unreturned_size );
		for (Iterator i = mlisteners.iterator(); i.hasNext();)
		    {
			ResourcePoolListener rpl = (ResourcePoolListener) i.next();
			rpl.resourceRemoved(evt);
		    }
	    }
    }
}