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Java client to use for MessageBus hornetq servers
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package com.groupon.stomp;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

/**
 * Provides a mechanism to marshal commands into and out of packets
 * or into and out of streams, Channels and Datagrams.
 *
 * Copyright (c) 2013, Groupon, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 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.
 *
 * Neither the name of GROUPON nor the names of its contributors may be
 * used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 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.
 */
public interface WireFormat {

    /**
     * Packet based marshaling 
     */
    ByteSequence marshal(Object command) throws IOException;

    /**
     * Packet based un-marshaling 
     */
    Object unmarshal(ByteSequence packet) throws IOException;

    /**
     * Stream based marshaling 
     */
    void marshal(Object command, DataOutput out) throws IOException;

    /**
     * Packet based un-marshaling 
     */
    Object unmarshal(DataInput in) throws IOException;

    /**
     * @param the version of the wire format
     */
    void setVersion(int version);

    /**
     * @return the version of the wire format
     */
    int getVersion();

}