iobufferlazyinitializer.java

mina是以Java实现的一个开源的网络程序框架

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 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
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 *    http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.mina.filter.buffer;

import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.util.LazyInitializer;

/**
 * An {@link LazyInitializer} implementation that initializes an 
 * {@link IoBuffer} only when needed.
 * 
 * @author The Apache MINA Project ([e-mail])
 * @version $Rev: 685705 $, $Date: 2008-08-14 00:16:46 +0200 (Thu, 14 Aug 2008) $
 * @since MINA 2.0.0-M2
 */
public class IoBufferLazyInitializer extends LazyInitializer<IoBuffer> {

    /**
     * The buffer size allocated for each new session's buffer.
     */
    private int bufferSize;

    /**
     * Constructor which sets allocated buffer size to <code>bufferSize</code>.
     * 
     * @param bufferSize the new buffer size
     */
    public IoBufferLazyInitializer(int bufferSize) {
        this.bufferSize = bufferSize;
    }

    /**
     * {@inheritDoc}
     */
    public IoBuffer init() {
        return IoBuffer.allocate(bufferSize);
    }
}