com.sun.jersey.server.impl.template.ViewableMessageBodyWriter Maven / Gradle / Ivy

Go to download
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.jersey.server.impl.template;

import com.sun.jersey.spi.template.ResolvedViewable;
import com.sun.jersey.spi.template.TemplateContext;
import com.sun.jersey.api.view.Viewable;
import com.sun.jersey.spi.inject.ServerSide;
import com.sun.jersey.spi.inject.ConstrainedTo;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.ws.rs.ext.MessageBodyWriter;
import java.io.IOException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.UriInfo;

/**
 *
 * @author [email protected]
 */
@ConstrainedTo(ServerSide.class)
public final class ViewableMessageBodyWriter implements MessageBodyWriter {

    @Context UriInfo ui;
    
    @Context TemplateContext tc;
    
    public boolean isWriteable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return Viewable.class.isAssignableFrom(type);
    }

    public void writeTo(Viewable v, 
            Class type, Type genericType, Annotation[] annotations, 
            MediaType mediaType, MultivaluedMap httpHeaders, 
            OutputStream entityStream) throws IOException {
        final ResolvedViewable rv = resolve(v);
        if (rv == null)
            throw new IOException("The template name, " +
                    v.getTemplateName() +
                    ", could not be resolved to a fully qualified template name");

        rv.writeTo(entityStream);
    }

    private ResolvedViewable resolve(Viewable v) {
        if (v instanceof ResolvedViewable) {
            return (ResolvedViewable)v;
        } else {
            return tc.resolveViewable(v, ui);
        }
    }
    
    public long getSize(Viewable t, Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return -1;
    }
}