001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bstefanescu
018 *
019 * $Id$
020 */
021
022package org.nuxeo.ecm.webengine.jaxrs.views;
023
024import java.io.IOException;
025import java.io.OutputStream;
026import java.lang.annotation.Annotation;
027import java.lang.reflect.Type;
028
029import javax.ws.rs.Produces;
030import javax.ws.rs.core.MediaType;
031import javax.ws.rs.core.MultivaluedMap;
032import javax.ws.rs.ext.MessageBodyWriter;
033import javax.ws.rs.ext.Provider;
034
035import org.apache.commons.logging.Log;
036import org.apache.commons.logging.LogFactory;
037import org.nuxeo.ecm.platform.rendering.api.RenderingException;
038
039/**
040 * @author <a href="mailto:[email protected]">Bogdan Stefanescu</a>
041 */
042@Provider
043@Produces("*/*")
044public class TemplateViewMessageBodyWriter implements MessageBodyWriter<TemplateView> {
045
046    private static final Log log = LogFactory.getLog(TemplateViewMessageBodyWriter.class);
047
048    // @ResourceContext private HttpServletRequest request;
049
050    @Override
051    public void writeTo(TemplateView t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
052            MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException {
053        try {
054            t.render(entityStream);
055        } catch (RenderingException | IOException e) {
056            log.error("Failed to render view: " + t.getUrl(), e);
057            throw new IOException("Failed to render view: " + t.getUrl(), e);
058        }
059    }
060
061    @Override
062    public long getSize(TemplateView arg0, Class<?> arg1, Type arg2, Annotation[] arg3, MediaType arg4) {
063        return -1;
064    }
065
066    @Override
067    public boolean isWriteable(Class<?> arg0, Type type, Annotation[] arg2, MediaType arg3) {
068        return TemplateView.class.isAssignableFrom(arg0);
069    }
070
071}