src/java/org/apache/turbine/util/pool/RecyclableSupport.java

package org.apache.turbine.util.pool;

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001-2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache Turbine" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
 *    written permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    "Apache Turbine", nor may "Apache" appear in their name, without
 *    prior written permission of the Apache Software Foundation.
 *
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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

import org.apache.turbine.services.pool.TurbinePool;

/**
 * A support class for recyclable objects implementing default methods.
 *
 * @author <a href="mailto:ilkka.priha@simsoft.fi">Ilkka Priha</a>
 * @version $Id$
 */
public class RecyclableSupport implements Recyclable
{
    /**
     * The disposed flag.
     */
    private boolean disposed;

    /**
     * Constructs a new recyclable support and calls the default recycle method.
     */
    public void Recyclable()
    {
        recycle();
    }

    /**
     * Recycles the object by removing its disposed flag.
     */
    public void recycle()
    {
        disposed = false;
    }

    /**
     * Disposes the object by setting its disposed flag.
     */
    public void dispose()
    {
        disposed = true;
    }

    /**
     * Checks whether the object is disposed.
     *
     * @return true, if the object is disposed.
     */
    public boolean isDisposed()
    {
        return disposed;
    }

    /**
     * A convenience method allowing a clever recyclable object
     * to put itself into a pool for recycling.
     *
     * @return true, if disposal was accepted by the pool.
     */
    protected boolean doDispose()
    {
        try
        {
            return TurbinePool.putInstance(this);
        }
        catch (RuntimeException x)
        {
            return false;
        }
    }
}