/**
* 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.camel.component.jackson;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.module.jaxb.JaxbAnnotationModule;
import org.apache.camel.Exchange;
import org.apache.camel.spi.DataFormat;
/**
* A <a href="http://camel.apache.org/data-format.html">data format</a> ({@link DataFormat})
* using <a href="http://jackson.codehaus.org/">Jackson</a> to marshal to and from JSON.
*/
public class JacksonDataFormat implements DataFormat {
private final ObjectMapper objectMapper;
private Class<?> unmarshalType;
private Class<?> jsonView;
/**
* Use the default Jackson {@link ObjectMapper} and {@link Map}
*/
public JacksonDataFormat() {
this(HashMap.class);
}
/**
* Use the default Jackson {@link ObjectMapper} and with a custom
* unmarshal type
*
* @param unmarshalType the custom unmarshal type
*/
public JacksonDataFormat(Class<?> unmarshalType) {
this(unmarshalType, null);
}
/**
* Use the default Jackson {@link ObjectMapper} and with a custom
* unmarshal type and JSON view
*
* @param unmarshalType the custom unmarshal type
* @param jsonView marker class to specifiy properties to be included during marshalling.
* See also http://wiki.fasterxml.com/JacksonJsonViews
*/
public JacksonDataFormat(Class<?> unmarshalType, Class<?> jsonView) {
this.objectMapper = new ObjectMapper();
this.unmarshalType = unmarshalType;
this.jsonView = jsonView;
// Enables JAXB processing
JaxbAnnotationModule module = new JaxbAnnotationModule();
this.objectMapper.registerModule(module);
}
/**
* Use a custom Jackson mapper and and unmarshal type
*
* @param mapper the custom mapper
* @param unmarshalType the custom unmarshal type
*/
public JacksonDataFormat(ObjectMapper mapper, Class<?> unmarshalType) {
this(mapper, unmarshalType, null);
}
/**
* Use a custom Jackson mapper, unmarshal type and JSON view
*
* @param mapper the custom mapper
* @param unmarshalType the custom unmarshal type
* @param jsonView marker class to specifiy properties to be included during marshalling.
* See also http://wiki.fasterxml.com/JacksonJsonViews
*/
public JacksonDataFormat(ObjectMapper mapper, Class<?> unmarshalType, Class<?> jsonView) {
this.objectMapper = mapper;
this.unmarshalType = unmarshalType;
this.jsonView = jsonView;
}
public void marshal(Exchange exchange, Object graph, OutputStream stream) throws Exception {
this.objectMapper.writerWithView(jsonView).writeValue(stream, graph);
}
public Object unmarshal(Exchange exchange, InputStream stream) throws Exception {
return this.objectMapper.readValue(stream, this.unmarshalType);
}
// Properties
// -------------------------------------------------------------------------
public Class<?> getUnmarshalType() {
return this.unmarshalType;
}
public void setUnmarshalType(Class<?> unmarshalType) {
this.unmarshalType = unmarshalType;
}
public Class<?> getJsonView() {
return jsonView;
}
public void setJsonView(Class<?> jsonView) {
this.jsonView = jsonView;
}
public ObjectMapper getObjectMapper() {
return this.objectMapper;
}
}