001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 019package org.apache.oozie.client.event.jms; 020 021import org.codehaus.jackson.map.DeserializationConfig; 022import org.codehaus.jackson.map.ObjectMapper; 023 024 025/** 026 * Message deserializer to convert from JSON to java object 027 */ 028public class JSONMessageDeserializer extends MessageDeserializer { 029 030 static ObjectMapper mapper = new ObjectMapper(); // Thread-safe. 031 032 static { 033 mapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false); 034 } 035 036 @Override 037 public <T> T getDeserializedObject(String messageBody, Class<T> clazz) { 038 try { 039 return mapper.readValue(messageBody, clazz); 040 } 041 catch (Exception exception) { 042 throw new IllegalArgumentException("Could not deserialize the JMS message using " 043 + clazz.getCanonicalName(), exception); 044 } 045 } 046}