| /* |
| * 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 flex.messaging.io.amf.translator.decoder; |
| |
| import flex.messaging.io.amf.translator.TranslationException; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.SortedMap; |
| import java.util.TreeMap; |
| |
| /** |
| * Decodes an ActionScript object to a Java Map. |
| */ |
| public class MapDecoder extends ActionScriptDecoder { |
| public boolean hasShell() { |
| return true; |
| } |
| |
| protected boolean isSuitableMap(Object encodedObject, Class desiredClass) { |
| return (encodedObject != null && encodedObject instanceof Map && desiredClass.isAssignableFrom(encodedObject.getClass())); |
| } |
| |
| public Object createShell(Object encodedObject, Class desiredClass) { |
| try { |
| if (isSuitableMap(encodedObject, desiredClass)) { |
| return encodedObject; |
| } else { |
| if (desiredClass.isInterface() || !Map.class.isAssignableFrom(desiredClass)) { |
| if (SortedMap.class.isAssignableFrom(desiredClass)) { |
| return new TreeMap(); |
| } else { |
| return new HashMap(); |
| } |
| } else { |
| return desiredClass.newInstance(); |
| } |
| } |
| } catch (Exception e) { |
| TranslationException ex = new TranslationException("Could not create Map " + desiredClass, e); |
| ex.setCode("Server.Processing"); |
| throw ex; |
| } |
| } |
| |
| public Object decodeObject(Object shell, Object encodedObject, Class desiredClass) { |
| if (shell == null || encodedObject == null) |
| return null; |
| |
| // Don't decode if we already have a suitable Map. |
| if (isSuitableMap(encodedObject, desiredClass)) { |
| return encodedObject; |
| } |
| |
| return decodeMap((Map) shell, (Map) encodedObject); |
| } |
| |
| protected Map decodeMap(Map shell, Map map) { |
| if (shell != map) |
| shell.putAll(map); |
| else |
| shell = map; |
| |
| return shell; |
| } |
| } |