| /** |
| * 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 com.datatorrent.common.util; |
| |
| import java.io.IOException; |
| |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.ext.ContextResolver; |
| import javax.ws.rs.ext.Provider; |
| |
| import org.codehaus.jackson.JsonGenerator; |
| import org.codehaus.jackson.Version; |
| import org.codehaus.jackson.map.JsonSerializer; |
| import org.codehaus.jackson.map.ObjectMapper; |
| import org.codehaus.jackson.map.SerializationConfig; |
| import org.codehaus.jackson.map.module.SimpleModule; |
| import org.codehaus.jackson.map.ser.std.RawSerializer; |
| import org.codehaus.jettison.json.JSONArray; |
| import org.codehaus.jettison.json.JSONObject; |
| |
| /** |
| * <p>JacksonObjectMapperProvider class.</p> |
| * |
| * @since 0.3.2 |
| */ |
| @Provider |
| @Produces(MediaType.APPLICATION_JSON) |
| public class JacksonObjectMapperProvider implements ContextResolver<ObjectMapper> |
| { |
| private final ObjectMapper objectMapper; |
| private final SimpleModule module = new SimpleModule("MyModule", new Version(1, 0, 0, null)); |
| |
| /** |
| * <p>Constructor for JacksonObjectMapperProvider.</p> |
| */ |
| public JacksonObjectMapperProvider() |
| { |
| this.objectMapper = new ObjectMapper(); |
| objectMapper.configure(JsonGenerator.Feature.WRITE_NUMBERS_AS_STRINGS, true); |
| objectMapper.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false); |
| module.addSerializer(ObjectMapperString.class, new RawSerializer<>(Object.class)); |
| module.addSerializer(JSONObject.class, new RawSerializer<>(Object.class)); |
| module.addSerializer(JSONArray.class, new RawSerializer<>(Object.class)); |
| objectMapper.registerModule(module); |
| } |
| |
| /** {@inheritDoc} |
| * @param type |
| * @return An object mapper. |
| */ |
| @Override |
| public ObjectMapper getContext(Class<?> type) |
| { |
| return objectMapper; |
| } |
| |
| public <T> void addSerializer(Class<T> clazz, JsonSerializer<T> serializer) |
| { |
| module.addSerializer(clazz, serializer); |
| } |
| |
| public <T> void addSerializer(JsonSerializer<T> serializer) |
| { |
| module.addSerializer(serializer); |
| } |
| |
| public JSONObject toJSONObject(Object o) |
| { |
| try { |
| return new JSONObject(this.getContext(null).writeValueAsString(o)); |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| |
| public <T> T fromJSONObject(JSONObject json, Class<T> clazz) throws IOException |
| { |
| return this.getContext(null).readValue(json.toString(), clazz); |
| } |
| |
| } |