Java tutorial
/* * 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 org.apache.ode.jacob.Message; import com.fasterxml.jackson.core.JsonGenerationException; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.SerializerProvider; import com.fasterxml.jackson.databind.jsontype.TypeSerializer; import com.fasterxml.jackson.databind.ser.std.StdSerializer; /** * Jackson serializer for {@link Message} objects. * * @author Tammo van Lessen * */ public class MessageSerializer extends StdSerializer<Message> { public MessageSerializer() { super(Message.class); } @Override public void serialize(Message value, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonGenerationException { jgen.writeStartObject(); serializeContents(value, jgen, provider); jgen.writeEndObject(); } @Override public void serializeWithType(Message value, JsonGenerator jgen, SerializerProvider provider, TypeSerializer typeSer) throws IOException, JsonProcessingException { typeSer.writeTypePrefixForObject(value, jgen); serializeContents(value, jgen, provider); typeSer.writeTypeSuffixForObject(value, jgen); } private void serializeContents(Message value, JsonGenerator jgen, SerializerProvider provider) throws JsonGenerationException, IOException { jgen.writeNumberField("id", value.getId()); jgen.writeStringField("action", value.getAction()); jgen.writeObjectField("to", value.getTo()); if (value.getReplyTo() != null) { jgen.writeObjectField("replyTo", value.getTo()); } if (value.getHeaders() != null && !value.getHeaders().isEmpty()) { jgen.writeObjectField("headers", value.getHeaders()); } if (value.getBody() != null) { jgen.writeObjectField("body", value.getBody()); } } }