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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.protocol;
import org.apache.qpid.framing.AMQMethodBody;
/**
* AMQMethodEvent encapsulates an AMQP method call, and the channel on which that method call occurred.
*
* <p/>Supplies the:
* <ul>
* <li>channel id</li>
* <li>protocol method</li>
* </ul>
*
* <p/>As the event contains the context in which it occurred, event listeners do not need to be statefull.
* to listeners. Events are often handled by {@link AMQMethodListener}s.
*
* <p/><table id="crc"><caption>CRC Card</caption>
* <tr><th> Responsibilities <th> Collaborations
* <tr><td> Encapsulate an AMQP method call and the channel as the context for the method call.
* </table>
*/
public class AMQMethodEvent<M extends AMQMethodBody>
{
/** Holds the method call. */
private final M _method;
/** Holds the channel handle for the method call. */
private final int _channelId;
/**
* Creates a method event to encasulate a method call and channel.
*
* @param channelId The channel on which the method call occurred.
* @param method The method call.
*/
public AMQMethodEvent(int channelId, M method)
{
_channelId = channelId;
_method = method;
}
/**
* Gets the method call.
*
* @return The method call.
*/
public M getMethod()
{
return _method;
}
/**
* Gets the channel handle for the method call.
*
* @return The channel handle for the method call.
*/
public int getChannelId()
{
return _channelId;
}
/**
* Prints the method call as a string, mainly for debugging purposes.
*
* @return The method call as a string, mainly for debugging purposes.
*/
public String toString()
{
StringBuilder buf = new StringBuilder("Method event: ");
buf.append("\nChannel id: ").append(_channelId);
buf.append("\nMethod: ").append(_method);
return buf.toString();
}
}
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