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package org.apache.qpid.framing;
import org.apache.mina.common.ByteBuffer;
/*
*
* 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.
*
*/
public abstract class DeferredDataBlock extends AMQDataBlock
{
private AMQDataBlock _underlyingDataBlock;
public long getSize()
{
if(_underlyingDataBlock == null)
{
_underlyingDataBlock = createAMQDataBlock();
}
return _underlyingDataBlock.getSize();
}
public void writePayload(ByteBuffer buffer)
{
if(_underlyingDataBlock == null)
{
_underlyingDataBlock = createAMQDataBlock();
}
_underlyingDataBlock.writePayload(buffer);
}
abstract protected AMQDataBlock createAMQDataBlock();
}
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