broker-plugins/amqp-1-0-protocol/src/main/java/org/apache/qpid/server/protocol/v1_0/codec/AbstractDescribedTypeWriter.java

/*
 *
 * 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.server.protocol.v1_0.codec;

import org.apache.qpid.server.bytebuffer.QpidByteBuffer;

public abstract class AbstractDescribedTypeWriter<V> implements ValueWriter<V>
{
    private static final byte DESCRIBED_TYPE = (byte)0;
    private final ValueWriter _descriptorWriter;
    private final ValueWriter _describedWriter;

    public AbstractDescribedTypeWriter(ValueWriter descriptorWriter,
                                       ValueWriter describedWriter)
    {
        _descriptorWriter = descriptorWriter;
        _describedWriter = describedWriter;
    }

    @Override
    public final void writeToBuffer(QpidByteBuffer buffer)
    {
        buffer.put(DESCRIBED_TYPE);
        _descriptorWriter.writeToBuffer(buffer);
        _describedWriter.writeToBuffer(buffer);
    }

    @Override
    public final int getEncodedSize()
    {
        return 1 + _descriptorWriter.getEncodedSize() + _describedWriter.getEncodedSize();
    }
}