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Diffstat (limited to '')
-rw-r--r-- | sandbox/event/modules/binding-feed/src/main/java/org/apache/tuscany/sca/binding/feed/provider/AtomFeedEntryUtil.java | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/sandbox/event/modules/binding-feed/src/main/java/org/apache/tuscany/sca/binding/feed/provider/AtomFeedEntryUtil.java b/sandbox/event/modules/binding-feed/src/main/java/org/apache/tuscany/sca/binding/feed/provider/AtomFeedEntryUtil.java new file mode 100644 index 0000000000..7adbfca6e8 --- /dev/null +++ b/sandbox/event/modules/binding-feed/src/main/java/org/apache/tuscany/sca/binding/feed/provider/AtomFeedEntryUtil.java @@ -0,0 +1,117 @@ +/* + * 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 org.apache.tuscany.sca.binding.feed.provider; + +import java.io.IOException; +import java.io.Reader; +import java.io.StringWriter; +import java.io.Writer; +import java.util.ArrayList; +import java.util.List; + +import org.jdom.Document; +import org.jdom.Element; +import org.jdom.JDOMException; +import org.jdom.input.SAXBuilder; +import org.jdom.output.Format; +import org.jdom.output.XMLOutputter; + +import com.sun.syndication.feed.atom.Content; +import com.sun.syndication.feed.atom.Entry; +import com.sun.syndication.feed.atom.Feed; +import com.sun.syndication.io.FeedException; +import com.sun.syndication.io.WireFeedInput; +import com.sun.syndication.io.WireFeedOutput; + +/** + * Utility methods to read/write Atom entries. + * + * @version $Rev$ $Date$ + */ +class AtomFeedEntryUtil { + + /** + * Read an Atom entry + * + * @param request + * @return + * @throws IOException + * @throws JDOMException + * @throws FeedException + * @throws IllegalArgumentException + */ + static Entry readFeedEntry(String feedType, Reader reader) throws JDOMException, IOException, IllegalArgumentException, + FeedException { + SAXBuilder builder = new SAXBuilder(); + Document document = builder.build(reader); + Element root = document.getRootElement(); + root.detach(); + Feed feed = new Feed(); + feed.setFeedType(feedType); + WireFeedOutput wireFeedOutput = new WireFeedOutput(); + document = wireFeedOutput.outputJDom(feed); + document.getRootElement().addContent(root); + WireFeedInput input = new WireFeedInput(); + feed = (Feed)input.build(document); + Entry feedEntry = (Entry)feed.getEntries().get(0); + if (feedEntry.getContents().size() != 0) { + Content content = (Content)feedEntry.getContents().get(0); + if ("text/xml".equals(content.getType())) { + Element element = root.getChild("content", root.getNamespace()); + if (!element.getChildren().isEmpty()) { + element = (Element)element.getChildren().get(0); + XMLOutputter outputter = new XMLOutputter(); + StringWriter sw = new StringWriter(); + outputter.output(element, sw); + content.setValue(sw.toString()); + } + } + } + return feedEntry; + } + + /** + * Write an Atom entry. + * + * @param entry + * @param response + * @throws FeedException + * @throws IllegalArgumentException + * @throws IOException + * @throws ServletException + */ + static void writeFeedEntry(Entry feedEntry, String feedType, Writer writer) throws IllegalArgumentException, FeedException, + IOException { + Feed feed = new Feed(); + feed.setFeedType(feedType); + List<Entry> feedEntries = new ArrayList<Entry>(); + feedEntries.add(feedEntry); + feed.setEntries(feedEntries); + + WireFeedOutput wireFeedOutput = new WireFeedOutput(); + Document document = wireFeedOutput.outputJDom(feed); + Element root = document.getRootElement(); + Element element = (Element)root.getChildren().get(0); + XMLOutputter outputter = new XMLOutputter(); + outputter.setFormat(Format.getPrettyFormat()); + outputter.output(element, writer); + } + +} |