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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 class LongWriter implements ValueWriter<Long>
{
private static final byte EIGHT_BYTE_FORMAT_CODE = (byte) 0x81;
private static final byte ONE_BYTE_FORMAT_CODE = (byte) 0x55;
private ValueWriter<Long> _delegate;
private final FixedEightWriter<Long> _eightByteWriter = new FixedEightWriter<Long>()
{
@Override
byte getFormatCode()
{
return EIGHT_BYTE_FORMAT_CODE;
}
@Override
long convertValueToLong(Long value)
{
return value;
}
};
private final ValueWriter<Long> _oneByteWriter = new FixedOneWriter<Long>()
{
@Override protected byte getFormatCode()
{
return ONE_BYTE_FORMAT_CODE;
}
@Override protected byte convertToByte(final Long value)
{
return value.byteValue();
}
};
public int writeToBuffer(final ByteBuffer buffer)
{
return _delegate.writeToBuffer(buffer);
}
public void setValue(final Long l)
{
if(l >= -128 && l <= 127)
{
_delegate = _oneByteWriter;
}
else
{
_delegate = _eightByteWriter;
}
_delegate.setValue(l);
}
public boolean isComplete()
{
return _delegate.isComplete();
}
public boolean isCacheable()
{
return false;
}
private static Factory<Long> FACTORY = new Factory<Long>()
{
public ValueWriter<Long> newInstance(Registry registry)
{
return new LongWriter();
}
};
public static void register(ValueWriter.Registry registry)
{
registry.register(Long.class, FACTORY);
}
}
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