001/*
002 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the Eclipse Public License v1.0
006 * which accompanies this distribution, and is available at
007 * http://www.eclipse.org/legal/epl-v10.html
008 *
009 * Contributors:
010 *     bstefanescu
011 *
012 * $Id$
013 */
014
015package org.nuxeo.ecm.webengine.jaxrs.views;
016
017import java.io.IOException;
018import java.io.OutputStream;
019import java.lang.annotation.Annotation;
020import java.lang.reflect.Type;
021
022import javax.ws.rs.Produces;
023import javax.ws.rs.core.MediaType;
024import javax.ws.rs.core.MultivaluedMap;
025import javax.ws.rs.ext.MessageBodyWriter;
026import javax.ws.rs.ext.Provider;
027
028import org.apache.commons.logging.Log;
029import org.apache.commons.logging.LogFactory;
030import org.nuxeo.ecm.platform.rendering.api.RenderingException;
031
032/**
033 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
034 */
035@Provider
036@Produces("*/*")
037public class TemplateViewMessageBodyWriter implements MessageBodyWriter<TemplateView> {
038
039    private static final Log log = LogFactory.getLog(TemplateViewMessageBodyWriter.class);
040
041    // @ResourceContext private HttpServletRequest request;
042
043    @Override
044    public void writeTo(TemplateView t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
045            MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException {
046        try {
047            t.render(entityStream);
048        } catch (RenderingException | IOException e) {
049            log.error("Failed to render view: " + t.getUrl(), e);
050            throw new IOException("Failed to render view: " + t.getUrl(), e);
051        }
052    }
053
054    @Override
055    public long getSize(TemplateView arg0, Class<?> arg1, Type arg2, Annotation[] arg3, MediaType arg4) {
056        return -1;
057    }
058
059    @Override
060    public boolean isWriteable(Class<?> arg0, Type type, Annotation[] arg2, MediaType arg3) {
061        return TemplateView.class.isAssignableFrom(arg0);
062    }
063
064}