| /* |
| * |
| * 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; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import org.apache.qpid.server.message.ServerMessage; |
| import org.apache.qpid.server.plugin.MessageConverter; |
| import org.apache.qpid.server.plugin.QpidServiceLoader; |
| |
| public class MessageConverterRegistry |
| { |
| private static Map<Class<? extends ServerMessage>, Map<Class<? extends ServerMessage>, MessageConverter>> _converters = |
| new HashMap<Class<? extends ServerMessage>, Map<Class<? extends ServerMessage>, MessageConverter>>(); |
| |
| static |
| { |
| |
| for(MessageConverter<? extends ServerMessage, ? extends ServerMessage> converter : (new QpidServiceLoader()).instancesOf(MessageConverter.class)) |
| { |
| Map<Class<? extends ServerMessage>, MessageConverter> map = _converters.get(converter.getInputClass()); |
| if(map == null) |
| { |
| map = new HashMap<Class<? extends ServerMessage>, MessageConverter>(); |
| _converters.put(converter.getInputClass(), map); |
| } |
| map.put(converter.getOutputClass(),converter); |
| } |
| } |
| |
| public static <M extends ServerMessage,N extends ServerMessage> MessageConverter<M, N> getConverter(Class<M> from, Class<N> to) |
| { |
| Map<Class<? extends ServerMessage>, MessageConverter> map = _converters.get(from); |
| if(map == null) |
| { |
| map = _converters.get(ServerMessage.class); |
| } |
| return map == null ? null : map.get(to); |
| } |
| } |