| /* |
| * |
| * 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.protocol.v1_0.type.*; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.*; |
| import org.apache.qpid.server.protocol.v1_0.type.transport.Error; |
| import org.apache.qpid.bytebuffer.QpidByteBuffer; |
| |
| import java.util.ArrayList; |
| import java.util.Formatter; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| public class CompoundTypeConstructor extends VariableWidthTypeConstructor |
| { |
| private final CompoundTypeAssembler.Factory _assemblerFactory; |
| |
| public static final CompoundTypeAssembler.Factory LIST_ASSEMBLER_FACTORY = |
| new CompoundTypeAssembler.Factory() |
| { |
| |
| public CompoundTypeAssembler newInstance() |
| { |
| return new ListAssembler(); |
| } |
| }; |
| |
| |
| |
| private static class ListAssembler implements CompoundTypeAssembler |
| { |
| private List _list; |
| |
| public void init(final int count) throws AmqpErrorException |
| { |
| _list = new ArrayList(count); |
| } |
| |
| public void addItem(final Object obj) throws AmqpErrorException |
| { |
| _list.add(obj); |
| } |
| |
| public Object complete() throws AmqpErrorException |
| { |
| return _list; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "ListAssembler{" + |
| "_list=" + _list + |
| '}'; |
| } |
| } |
| |
| |
| public static final CompoundTypeAssembler.Factory MAP_ASSEMBLER_FACTORY = |
| new CompoundTypeAssembler.Factory() |
| { |
| |
| public CompoundTypeAssembler newInstance() |
| { |
| return new MapAssembler(); |
| } |
| }; |
| |
| private static class MapAssembler implements CompoundTypeAssembler |
| { |
| private Map _map; |
| private Object _lastKey; |
| private static final Object NOT_A_KEY = new Object(); |
| |
| |
| public void init(final int count) throws AmqpErrorException |
| { |
| // Can't have an odd number of elements in a map |
| if((count & 0x1) == 1) |
| { |
| Error error = new Error(); |
| error.setCondition(AmqpError.DECODE_ERROR); |
| Formatter formatter = new Formatter(); |
| formatter.format("map cannot have odd number of elements: %d", count); |
| error.setDescription(formatter.toString()); |
| throw new AmqpErrorException(error); |
| } |
| _map = new HashMap(count); |
| _lastKey = NOT_A_KEY; |
| } |
| |
| public void addItem(final Object obj) throws AmqpErrorException |
| { |
| if(_lastKey != NOT_A_KEY) |
| { |
| if(_map.put(_lastKey, obj) != null) |
| { |
| Error error = new Error(); |
| error.setCondition(AmqpError.DECODE_ERROR); |
| Formatter formatter = new Formatter(); |
| formatter.format("map cannot have duplicate keys: %s has values (%s, %s)", _lastKey, _map.get(_lastKey), obj); |
| error.setDescription(formatter.toString()); |
| |
| throw new AmqpErrorException(error); |
| } |
| _lastKey = NOT_A_KEY; |
| } |
| else |
| { |
| _lastKey = obj; |
| } |
| |
| } |
| |
| public Object complete() throws AmqpErrorException |
| { |
| return _map; |
| } |
| } |
| |
| |
| public static CompoundTypeConstructor getInstance(int i, |
| CompoundTypeAssembler.Factory assemblerFactory) |
| { |
| return new CompoundTypeConstructor(i, assemblerFactory); |
| } |
| |
| |
| private CompoundTypeConstructor(int size, |
| final CompoundTypeAssembler.Factory assemblerFactory) |
| { |
| super(size); |
| _assemblerFactory = assemblerFactory; |
| } |
| |
| @Override |
| public Object construct(final QpidByteBuffer in, boolean isCopy, ValueHandler delegate) throws AmqpErrorException |
| { |
| int size; |
| int count; |
| |
| if(getSize() == 1) |
| { |
| size = in.get() & 0xFF; |
| count = in.get() & 0xFF; |
| } |
| else |
| { |
| size = in.getInt(); |
| count = in.getInt(); |
| } |
| |
| CompoundTypeAssembler assembler = _assemblerFactory.newInstance(); |
| |
| assembler.init(count); |
| |
| for(int i = 0; i < count; i++) |
| { |
| assembler.addItem(delegate.parse(in)); |
| } |
| |
| return assembler.complete(); |
| |
| } |
| |
| |
| } |