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*
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* Copyright 2007-2008 Sun Microsystems, Inc. All rights reserved.
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
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* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
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package com.sun.grizzly.async;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* Object, which is able to read data to the {@link ByteBuffer}
* asynchronously, using queue.
*
* @author Alexey Stashok
*/
public interface AsyncQueueReadable {
/**
* Method reads data to the {@link ByteBuffer} using async read queue.
* First, if read queue is empty - it tries to read to the
* {@link ByteBuffer} directly (without putting to the queue).
* If associated read queue is not empty or after direct reading
* {@link ByteBuffer} still has remaining place for next read -
* {@link ByteBuffer} will be added to {@link AsyncQueue}.
* If an exception occurs, during direct reading - it will be propagated
* to the caller directly, otherwise, if the {@link ByteBuffer} is
* added to a reading queue - exception notification will come via
* AsyncReadCallbackHandler.onIOException()
*
* @param buffer {@link ByteBuffer}
* @param callbackHandler {@link AsyncReadCallbackHandler},
* which will get notified, when
* {@link ByteBuffer} will get full
* @return true, if {@link ByteBuffer} was read completely,
* false if read operation was put to queue
* @throws java.io.IOException
*/
public void readFromAsyncQueue(ByteBuffer buffer,
AsyncReadCallbackHandler callbackHandler) throws IOException;
/**
* Method reads data to the {@link ByteBuffer} using async read queue.
* First, if read queue is empty - it tries to read to the
* {@link ByteBuffer} directly (without putting to the queue).
* If associated read queue is not empty or after direct reading
* {@link ByteBuffer} still has remaining place for next read -
* {@link ByteBuffer} will be added to {@link AsyncQueue}.
* If an exception occurs, during direct reading - it will be propagated
* to the caller directly, otherwise, if the {@link ByteBuffer} is
* added to a reading queue - exception notification will come via
* AsyncReadCallbackHandler.onIOException()
*
* @param buffer {@link ByteBuffer}
* @param callbackHandler {@link AsyncReadCallbackHandler},
* which will get notified, when
* {@link ByteBuffer} will get full
* @param condition {@link AsyncReadCondition}, which will be called to
* check if read data is complete, and callbackHandler could
* be called
* @return true, if {@link ByteBuffer} was read completely,
* false if read operation was put to queue
* @throws java.io.IOException
*/
public void readFromAsyncQueue(ByteBuffer buffer,
AsyncReadCallbackHandler callbackHandler,
AsyncReadCondition condition) throws IOException;
/**
* Method reads data to the {@link ByteBuffer} using async read queue.
* First, if read queue is empty - it tries to read to the
* {@link ByteBuffer} directly (without putting to the queue).
* If associated read queue is not empty or after direct reading
* {@link ByteBuffer} still has remaining place for next read -
* {@link ByteBuffer} will be added to {@link AsyncQueue}.
* If an exception occurs, during direct reading - it will be propagated
* to the caller directly, otherwise, if the {@link ByteBuffer} is
* added to a reading queue - exception notification will come via
* AsyncReadCallbackHandler.onIOException()
*
* @param buffer {@link ByteBuffer}
* @param callbackHandler {@link AsyncReadCallbackHandler},
* which will get notified, when
* {@link ByteBuffer} will get full
* @param condition {@link AsyncReadCondition}, which will be called to
* check if read data is complete, and callbackHandler could
* be called
* @param readPostProcessor post processor, to be called to process read data
*
* @return true, if {@link ByteBuffer} was read completely,
* false if read operation was put to queue
* @throws java.io.IOException
*/
public void readFromAsyncQueue(ByteBuffer buffer,
AsyncReadCallbackHandler callbackHandler,
AsyncReadCondition condition,
AsyncQueueDataProcessor readPostProcessor) throws IOException;
}
