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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.amqp_1_0.codec;
import java.nio.ByteBuffer;
public abstract class FixedOneWriter<T> implements ValueWriter<T>
{
protected int _written = 2;
protected byte _value;
public int writeToBuffer(ByteBuffer buffer)
{
switch(_written)
{
case 0:
if(buffer.hasRemaining())
{
buffer.put(getFormatCode());
}
else
{
break;
}
case 1:
if(buffer.hasRemaining())
{
buffer.put(_value);
_written = 2;
}
else
{
_written = 1;
}
}
return 2;
}
protected abstract byte getFormatCode();
public boolean isComplete()
{
return _written == 2;
}
public boolean isCacheable()
{
return true;
}
public void setValue(final T value)
{
_written = 0;
_value = convertToByte(value);
}
protected abstract byte convertToByte(final T value);
}
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