/***
* Copyright (c) 2009 Caelum - www.caelum.com.br/opensource All rights reserved.
*
* Licensed 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 br.com.caelum.vraptor.serialization.xstream;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import javax.servlet.http.HttpServletResponse;
import br.com.caelum.vraptor.interceptor.TypeNameExtractor;
import br.com.caelum.vraptor.serialization.JSONPSerialization;
import br.com.caelum.vraptor.serialization.JSONSerialization;
import br.com.caelum.vraptor.serialization.ProxyInitializer;
import br.com.caelum.vraptor.serialization.SerializerBuilder;
import br.com.caelum.vraptor.view.ResultException;
/**
*
* Default implementation for JSONPSerialization that decorates default jsonSerialization output
* adding the callback padding
*
* @author Lucas Cavalcanti
* @author Pedro Matiello
* @since 3.3.0
*
*/
public class XStreamJSONPSerialization implements JSONPSerialization {
private final HttpServletResponse response;
private final TypeNameExtractor extractor;
private final ProxyInitializer initializer;
private final XStreamBuilder builder;
public XStreamJSONPSerialization(HttpServletResponse response, TypeNameExtractor extractor, ProxyInitializer initializer, XStreamBuilder builder) {
this.response = response;
this.extractor = extractor;
this.initializer = initializer;
this.builder = builder;
}
public JSONSerialization withCallback(final String callbackName) {
return new XStreamJSONSerialization(response, extractor, initializer, builder) {
@Override
protected SerializerBuilder getSerializer() {
try {
final PrintWriter writer = response.getWriter();
final StringWriter out = new StringWriter();
return new XStreamSerializer(super.getXStream(), new PrintWriter(out), extractor, initializer) {
@Override
public void serialize() {
super.serialize();
writer.append(callbackName).append("(").append(out.getBuffer()).append(")");
writer.close();
}
};
} catch (IOException e) {
throw new ResultException("Unable to serialize data", e);
}
}
};
}
}