org.quickserver.util.pool.ByteBufferObjectFactory.java Source code

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Here is the source code for org.quickserver.util.pool.ByteBufferObjectFactory.java

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/*
 * This file is part of the QuickServer library 
 * Copyright (C) QuickServer.org
 *
 * Use, modification, copying and distribution of this software is subject to
 * the terms and conditions of the GNU Lesser General Public License. 
 * You should have received a copy of the GNU LGP License along with this 
 * library; if not, you can download a copy from <http://www.quickserver.org/>.
 *
 * For questions, suggestions, bug-reports, enhancement-requests etc.
 * visit http://www.quickserver.org
 *
 */

package org.quickserver.util.pool;

import java.nio.ByteBuffer;
import org.apache.commons.pool.BasePoolableObjectFactory;

/**
 * A factory for creating java.nio.ByteBuffer instances. 
 * @author Akshathkumar Shetty
 * @since 1.3
 */
public class ByteBufferObjectFactory extends BasePoolableObjectFactory {
    int bufferSize = -1;
    boolean useDirectByteBuffer = true;

    public ByteBufferObjectFactory(int bufferSize, boolean useDirectByteBuffer) {
        this.bufferSize = bufferSize;
        this.useDirectByteBuffer = useDirectByteBuffer;
    }

    //Creates an instance that can be returned by the pool. 
    public Object makeObject() {
        if (useDirectByteBuffer)
            return ByteBuffer.allocateDirect(bufferSize);
        else
            return ByteBuffer.allocate(bufferSize);
    }

    //Uninitialize an instance to be returned to the pool. 
    public void passivateObject(Object obj) {
        ByteBuffer ch = (ByteBuffer) obj;
        ch.clear();
    }

    //Reinitialize an instance to be returned by the pool. 
    public void activateObject(Object obj) {
    }

    //Destroys an instance no longer needed by the pool. 
    public void destroyObject(Object obj) {
        if (obj == null)
            return;
        passivateObject(obj);
        obj = null;
    }

    //Ensures that the instance is safe to be returned by the pool. 
    public boolean validateObject(Object obj) {
        if (obj == null)
            return false;
        else
            return true;
    }
}