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+/*
+ * 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 feed;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.tuscany.sca.binding.feed.Feed;
+import org.osoa.sca.annotations.Property;
+import org.osoa.sca.annotations.Reference;
+
+import com.sun.syndication.feed.synd.SyndEntry;
+import com.sun.syndication.feed.synd.SyndFeed;
+import com.sun.syndication.feed.synd.SyndFeedImpl;
+
+/**
+ * Implementation of an SCA component that aggregates several
+ * Atom and RSS feeds.
+ *
+ * @version $Rev$ $Date$
+ */
+public class AggregatorImpl implements Feed {
+
+ @Reference
+ public Feed feed1;
+ @Reference
+ public Feed feed2;
+ @Reference(required = false)
+ public Sort sort;
+
+ @Property
+ public String feedTitle = "Aggregated Feed";
+ @Property
+ public String feedDescription = "Anonymous Aggregated Feed";
+ @Property
+ public String feedAuthor = "anonymous";
+
+ @SuppressWarnings("unchecked")
+ public SyndFeed get(String uri) {
+
+ // Create a new Feed
+ SyndFeed feed = new SyndFeedImpl();
+ feed.setTitle(feedTitle);
+ feed.setDescription(feedDescription);
+ feed.setAuthor(feedAuthor);
+ feed.setLink(uri);
+
+ // Aggregate entries from feed1 and feed2
+ List<SyndEntry> entries = new ArrayList<SyndEntry>();
+ entries.addAll(feed1.get(null).getEntries());
+ entries.addAll(feed2.get(null).getEntries());
+
+ // Sort entries by published date
+ if (sort != null)
+ feed.setEntries(sort.sort(entries));
+ else
+ feed.setEntries(entries);
+ return feed;
+ }
+}