| package org.taverna.server.master.rest.handler; |
| /* |
| * 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. |
| */ |
| |
| import static java.util.Collections.singletonMap; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Type; |
| |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.WebApplicationException; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.MultivaluedMap; |
| import javax.ws.rs.ext.MessageBodyWriter; |
| import javax.ws.rs.ext.Provider; |
| |
| import org.apache.abdera.Abdera; |
| import org.apache.abdera.model.Feed; |
| import org.apache.abdera.writer.Writer; |
| import org.springframework.beans.factory.annotation.Required; |
| |
| @Provider |
| @Produces({ "application/atom+xml", "application/atom+xml;type=feed" }) |
| public class FeedHandler implements MessageBodyWriter<Feed> { |
| private static final MediaType FEED = new MediaType("application", |
| "atom+xml", singletonMap("type", "feed")); |
| private static final String ENC = "UTF-8"; |
| |
| @Required |
| public void setAbdera(Abdera abdera) { |
| writer = abdera.getWriterFactory().getWriter("prettyxml"); |
| } |
| |
| private Writer writer; |
| |
| @Override |
| public boolean isWriteable(Class<?> type, Type genericType, |
| Annotation[] annotations, MediaType mediaType) { |
| if (!Feed.class.isAssignableFrom(type)) |
| return false; |
| if (!FEED.isCompatible(mediaType)) |
| return false; |
| if (mediaType.getParameters().containsKey("type")) |
| return "feed".equalsIgnoreCase(mediaType.getParameters() |
| .get("type")); |
| return true; |
| } |
| |
| @Override |
| public long getSize(Feed t, Class<?> type, Type genericType, |
| Annotation[] annotations, MediaType mediaType) { |
| return -1; |
| } |
| |
| @Override |
| public void writeTo(Feed t, Class<?> type, Type genericType, |
| Annotation[] annotations, MediaType mediaType, |
| MultivaluedMap<String, Object> httpHeaders, |
| OutputStream entityStream) throws IOException, |
| WebApplicationException { |
| httpHeaders.putSingle("Content-Type", FEED.toString() + ";charset=" |
| + ENC); |
| writer.writeTo(t, new OutputStreamWriter(entityStream, ENC)); |
| } |
| } |