/**
* 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.cxf.jaxrs.impl;
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.ProcessingException;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.WriterInterceptor;
import javax.ws.rs.ext.WriterInterceptorContext;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.jaxrs.provider.ProviderFactory;
import org.apache.cxf.jaxrs.utils.HttpUtils;
import org.apache.cxf.jaxrs.utils.JAXRSUtils;
import org.apache.cxf.message.Message;
public class WriterInterceptorMBW implements WriterInterceptor {
private static final Logger LOG = LogUtils.getL7dLogger(WriterInterceptorMBW.class);
private MessageBodyWriter<Object> writer;
private Message m;
public WriterInterceptorMBW(MessageBodyWriter<Object> writer, Message m) {
this.writer = writer;
this.m = m;
}
public MessageBodyWriter<Object> getMBW() {
return writer;
}
@SuppressWarnings("unchecked")
@Override
public void aroundWriteTo(WriterInterceptorContext c) throws IOException, WebApplicationException {
if (LOG.isLoggable(Level.FINE)) {
LOG.fine("Response EntityProvider is: " + writer.getClass().getName());
}
MultivaluedMap<String, Object> headers = c.getHeaders();
Object mtObject = headers.getFirst(HttpHeaders.CONTENT_TYPE);
MediaType entityMt = mtObject == null ? c.getMediaType() : JAXRSUtils.toMediaType(mtObject.toString());
m.put(Message.CONTENT_TYPE, entityMt.toString());
Class<?> entityCls = c.getType();
Type entityType = c.getGenericType();
Annotation[] entityAnns = c.getAnnotations();
if (writer == null
|| m.get(ProviderFactory.PROVIDER_SELECTION_PROPERTY_CHANGED) == Boolean.TRUE
&& !writer.isWriteable(entityCls, entityType, entityAnns, entityMt)) {
writer = (MessageBodyWriter<Object>)ProviderFactory.getInstance(m)
.createMessageBodyWriter(entityCls, entityType, entityAnns, entityMt, m);
if (writer == null) {
String errorMessage = JAXRSUtils.logMessageHandlerProblem("NO_MSG_WRITER", entityCls, entityMt);
throw new ProcessingException(errorMessage);
}
}
HttpUtils.convertHeaderValuesToString(headers, true);
writer.writeTo(c.getEntity(),
c.getType(),
c.getGenericType(),
c.getAnnotations(),
entityMt,
headers,
c.getOutputStream());
}
}