| /* |
| * 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.ode.jacob.soup.jackson; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.ode.jacob.ChannelRef; |
| import org.apache.ode.jacob.Message; |
| |
| import com.fasterxml.jackson.core.JsonParser; |
| import com.fasterxml.jackson.core.JsonProcessingException; |
| import com.fasterxml.jackson.core.JsonToken; |
| import com.fasterxml.jackson.core.type.TypeReference; |
| import com.fasterxml.jackson.databind.DeserializationContext; |
| import com.fasterxml.jackson.databind.deser.std.StdDeserializer; |
| |
| /** |
| * Jackson deserializer for Message objects. |
| * |
| * @author Tammo van Lessen |
| * |
| */ |
| public class MessageDeserializer extends StdDeserializer<Message> { |
| |
| private static final long serialVersionUID = 1L; |
| private TypeReference<HashMap<String,Object>> mapTypeRef = new TypeReference<HashMap<String, Object>>() {}; |
| |
| protected MessageDeserializer() { |
| super(Message.class); |
| } |
| |
| @Override |
| public Message deserialize(JsonParser jp, |
| DeserializationContext ctxt) throws IOException, |
| JsonProcessingException { |
| |
| long id = 0; |
| String action = null; |
| ChannelRef to = null; |
| ChannelRef replyTo = null; |
| Map<String, Object> headers = null; |
| Object body = null; |
| |
| while (jp.nextToken() != JsonToken.END_OBJECT) { |
| String fieldname = jp.getCurrentName(); |
| if (jp.getCurrentToken() == JsonToken.FIELD_NAME) { |
| // if we're not already on the field, advance by one. |
| jp.nextToken(); |
| } |
| |
| if ("id".equals(fieldname)) { |
| id = jp.getLongValue(); |
| } else if ("action".equals(fieldname)) { |
| action = jp.getText(); |
| } else if ("to".equals(fieldname)) { |
| to = jp.readValueAs(ChannelRef.class); |
| } else if ("replyTo".equals(fieldname)) { |
| replyTo = jp.readValueAs(ChannelRef.class); |
| } else if ("headers".equals(fieldname)) { |
| headers = jp.readValueAs(mapTypeRef); |
| } else if ("body".equals(fieldname)) { |
| body = jp.readValueAs(Object.class); |
| } |
| } |
| |
| if (action == null) { |
| throw ctxt.mappingException(Message.class); |
| } |
| |
| if (to == null) { |
| throw ctxt.mappingException(Message.class); |
| } |
| |
| Message msg = new Message(to, replyTo, action); |
| msg.setHeaders(headers); |
| msg.setBody(body); |
| msg.setId(id); |
| |
| return msg; |
| } |
| } |