/**
* JBoss, Home of Professional Open Source
* Copyright Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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 org.jboss.aerogear.controller.router.rest;
import org.codehaus.jackson.map.ObjectMapper;
import org.jboss.aerogear.controller.router.MediaType;
import org.jboss.aerogear.controller.router.RequestMethod;
import org.jboss.aerogear.controller.router.Responder;
import org.jboss.aerogear.controller.router.RouteContext;
import org.jboss.aerogear.controller.router.error.ErrorResponse;
/**
* A RESTFul {@link Responder} that is able to return JSON responses. </p> This implementation uses Jackson for JSON support.
*/
public class JsonResponder extends AbstractRestResponder {
private final ObjectMapper mapper;
public JsonResponder() {
mapper = new ObjectMapper();
}
@Override
public void writeResponse(final Object entity, final RouteContext routeContext) throws Exception {
if (entity instanceof ErrorResponse) {
final ErrorResponse errorResponse = (ErrorResponse) entity;
routeContext.getResponse().setStatus(errorResponse.statusCode());
writeJsonResponse(errorResponse.content(), routeContext);
} else {
if (entity != null) {
writeJsonResponse(entity, routeContext);
}
}
}
private void writeJsonResponse(final Object entity, final RouteContext routeContext) throws Exception {
String requestMethod = routeContext.getRequest().getMethod() ;
if (requestMethod != null && !requestMethod.equalsIgnoreCase(RequestMethod.OPTIONS.toString())) {
mapper.writeValue(routeContext.getResponse().getWriter(), entity);
}
}
/* (non-Javadoc)
* @see org.jboss.aerogear.controller.router.Responder#getMediaType()
*/
@Override
public MediaType getMediaType() {
return MediaType.JSON;
}
}