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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed 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.framing;
import org.apache.mina.common.ByteBuffer;
import org.apache.qpid.AMQChannelException;
public abstract class AMQMethodBody extends AMQBody
{
public static final byte TYPE = 1;
/** unsigned short */
protected abstract int getBodySize();
/**
* @return unsigned short
*/
protected abstract int getClazz();
/**
* @return unsigned short
*/
protected abstract int getMethod();
protected abstract void writeMethodPayload(ByteBuffer buffer);
protected byte getType()
{
return TYPE;
}
protected int getSize()
{
return 2 + 2 + getBodySize();
}
protected void writePayload(ByteBuffer buffer)
{
EncodingUtils.writeUnsignedShort(buffer, getClazz());
EncodingUtils.writeUnsignedShort(buffer, getMethod());
writeMethodPayload(buffer);
}
protected abstract void populateMethodBodyFromBuffer(ByteBuffer buffer) throws AMQFrameDecodingException;
protected void populateFromBuffer(ByteBuffer buffer, long size) throws AMQFrameDecodingException
{
populateMethodBodyFromBuffer(buffer);
}
public String toString()
{
StringBuffer buf = new StringBuffer(getClass().toString());
buf.append(" Class: ").append(getClazz());
buf.append(" Method: ").append(getMethod());
return buf.toString();
}
/**
* Creates an AMQChannelException for the corresponding body type (a channel exception
* should include the class and method ids of the body it resulted from).
*/
public AMQChannelException getChannelException(int code, String message)
{
return new AMQChannelException(code, message, getClazz(), getMethod());
}
public AMQChannelException getChannelException(int code, String message, Throwable cause)
{
return new AMQChannelException(code, message, getClazz(), getMethod(), cause);
}
}
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