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Diffstat (limited to 'sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main')
5 files changed, 283 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/AggregatorImpl.java b/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/AggregatorImpl.java new file mode 100644 index 0000000000..6bb418067a --- /dev/null +++ b/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/AggregatorImpl.java @@ -0,0 +1,76 @@ +/* + * 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; + } +} diff --git a/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/SampleServer.java b/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/SampleServer.java new file mode 100644 index 0000000000..5e57487809 --- /dev/null +++ b/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/SampleServer.java @@ -0,0 +1,53 @@ +/* + * 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.io.IOException; + +import org.apache.tuscany.sca.host.embedded.SCADomain; + +public class SampleServer { + public static void main(String[] args) throws Exception { + + SCADomain scaDomain = SCADomain.newInstance("FeedAggregator.composite"); + + try { + System.out.println("Sample Feed server started (press enter to shutdown)"); + System.out.println(); + System.out.println("To read the aggregated feeds, point your Web browser to the following addresses:"); + System.out.println("http://localhost:8083/atomAggregator"); + System.out.println("http://localhost:8083/rssAggregator"); + System.out.println("http://localhost:8083/atomAggregator?feedType=rss_2.0"); + System.out.println("http://localhost:8083/rssAggregator?feedType=atom_1.0"); + System.out.println(); + System.in.read(); + } catch (IOException e) { + e.printStackTrace(); + } + + // RssFeed feedService = scaDomain.getService(RssFeed.class, + // "RssAggregatorComponent"); + // SyndFeed syndFeed = feedService.get(); + // SyndFeedOutput output = new SyndFeedOutput(); + // output.output(syndFeed,new PrintWriter(System.out)); + + scaDomain.close(); + System.out.println("Sample Feed server stopped"); + } +} diff --git a/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/Sort.java b/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/Sort.java new file mode 100644 index 0000000000..d08f2dcb72 --- /dev/null +++ b/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/Sort.java @@ -0,0 +1,38 @@ +/* + * 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.List; + +import com.sun.syndication.feed.synd.SyndEntry; + +/** + * The Sort service business interface. + * + * @version $Rev$ $Date$ + */ +public interface Sort { + + /** + * Sort feed entries by published date. + * @param entries + * @return + */ + List<SyndEntry> sort(List<SyndEntry> entries); +} diff --git a/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/SortImpl.java b/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/SortImpl.java new file mode 100644 index 0000000000..d9987a0ff7 --- /dev/null +++ b/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/java/feed/SortImpl.java @@ -0,0 +1,58 @@ +/* + * 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.Arrays; +import java.util.Comparator; +import java.util.Date; +import java.util.List; + +import org.osoa.sca.annotations.Property; + +import com.sun.syndication.feed.synd.SyndEntry; + +/** + * Implementation of a Feed Sort service component. + * + * @version $Rev$ $Date$ + */ +public class SortImpl implements Sort { + + @Property + public boolean newFirst = true; + + @SuppressWarnings("unchecked") + public List<SyndEntry> sort(List<SyndEntry> entries) { + SyndEntry[] entriesArray = new SyndEntry[entries.size()]; + entriesArray = (SyndEntry[])entries.toArray(entriesArray); + Arrays.sort(entriesArray, new Comparator() { + public int compare(final Object xObj, final Object yObj) { + Date xDate = ((SyndEntry)xObj).getPublishedDate(); + Date yDate = ((SyndEntry)yObj).getPublishedDate(); + if (xDate == null) + return -1; + if (newFirst) + return yDate.compareTo(xDate); + else + return xDate.compareTo(yDate); + } + }); + return Arrays.asList(entriesArray); + } +} diff --git a/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/resources/FeedAggregator.composite b/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/resources/FeedAggregator.composite new file mode 100644 index 0000000000..f2a69eca43 --- /dev/null +++ b/sca-java-1.x/tags/0.91-incubating/samples/feed-aggregator/src/main/resources/FeedAggregator.composite @@ -0,0 +1,58 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!-- + * 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. +--> +<composite xmlns="http://www.osoa.org/xmlns/sca/1.0" + targetNamespace="http://aggregator" + name="FeedAggregator"> + + <service name="rssSample" promote="RssAggregator"> + <binding.rss uri="http://localhost:8083/rssAggregator"/> + </service> + <service name="atomSample" promote="AtomAggregator"> + <binding.atom uri="http://localhost:8083/atomAggregator"/> + </service> + + <component name="RssAggregator"> + <implementation.java class="feed.AggregatorImpl"/> + <reference name="feed1"> + <binding.rss uri="http://newsrss.bbc.co.uk/rss/newsonline_uk_edition/world/rss.xml"/> + </reference> + <reference name="feed2"> + <binding.rss uri="http://www.engadget.com/rss.xml"/> + </reference> + <reference name="sort" target="Sort"/> + <property name="feedTitle">Rss Sample</property> + </component> + <component name="Sort"> + <implementation.java class="feed.SortImpl"/> + <property name="newFirst">true</property> + </component> + + <component name="AtomAggregator"> + <implementation.java class="feed.AggregatorImpl"/> + <reference name="feed1"> + <binding.atom uri="http://www.oreillynet.com/pub/feed/1"/> + </reference> + <reference name="feed2"> + <binding.atom uri="http://www.apachenews.org/atom.xml"/> + </reference> + <property name="feedTitle">Atom Sample</property> + </component> + +</composite> |