| /* |
| * 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.messaging; |
| |
| import org.apache.qpid.server.protocol.v1_0.codec.ValueWriter; |
| |
| import org.apache.qpid.server.protocol.v1_0.type.Binary; |
| import org.apache.qpid.server.protocol.v1_0.type.codec.AMQPDescribedTypeRegistry; |
| import org.apache.qpid.bytebuffer.QpidByteBuffer; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class SectionEncoderImpl implements SectionEncoder |
| { |
| private static final QpidByteBuffer EMPTY_BYTE_BUFFER = QpidByteBuffer.wrap(new byte[0]); |
| private ValueWriter.Registry _registry; |
| |
| private int _totalSize = 0; |
| |
| private List<byte[]> _output = new ArrayList<byte[]>(); |
| private static final int DEFAULT_BUFFER_SIZE = 64 * 1024; |
| private QpidByteBuffer _current; |
| |
| public SectionEncoderImpl(final AMQPDescribedTypeRegistry describedTypeRegistry) |
| { |
| _registry = describedTypeRegistry; |
| reset(); |
| } |
| |
| public void reset() |
| { |
| _totalSize = 0; |
| _output.clear(); |
| _current = null; |
| |
| } |
| |
| public Binary getEncoding() |
| { |
| byte[] data = new byte[_totalSize]; |
| int offset = 0; |
| for(byte[] src : _output) |
| { |
| int length = src.length; |
| System.arraycopy(src, 0, data, offset, _totalSize - offset < length ? _totalSize - offset : length); |
| offset+= length; |
| } |
| return new Binary(data); |
| } |
| |
| public void encodeObject(Object obj) |
| { |
| final ValueWriter<Object> valueWriter = _registry.getValueWriter(obj); |
| valueWriter.setValue(obj); |
| int size = valueWriter.writeToBuffer(EMPTY_BYTE_BUFFER); |
| |
| byte[] data = new byte[size]; |
| _current = QpidByteBuffer.wrap(data); |
| valueWriter.writeToBuffer(_current); |
| _output.add(data); |
| |
| |
| _totalSize += size; |
| |
| |
| } |
| |
| public void encodeRaw(byte[] data) |
| { |
| if(_current == null) |
| { |
| byte[] buf = new byte[data.length]; |
| _current = QpidByteBuffer.wrap(buf); |
| _output.add(buf); |
| } |
| int remaining = _current.remaining(); |
| int length = data.length; |
| |
| if(remaining < length) |
| { |
| _current.put(data,0,remaining); |
| byte[] dst = new byte[length-remaining]; |
| _output.add(dst); |
| _current = QpidByteBuffer.wrap(dst).put(data,remaining,length-remaining); |
| } |
| else |
| { |
| _current.put(data); |
| } |
| _totalSize += data.length; |
| } |
| |
| } |