Java tutorial
/* * ContentModuleParser.java * * Created on January 11, 2005, 1:23 PM * * Copyright (C) 2005 Robert Cooper, Temple of the Screaming Penguin * * This library is provided under dual licenses. * You may choose the terms of the Lesser General Public License or the Apache * License at your discretion. * * Copyright (C) 2005 Robert Cooper, Temple of the Screaming Penguin * * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * * Licensed 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 com.rometools.modules.content.io; import java.util.ArrayList; import java.util.List; import java.util.Locale; import org.jdom2.Attribute; import org.jdom2.Content; import org.jdom2.Element; import org.jdom2.Namespace; import org.jdom2.output.XMLOutputter; import com.rometools.modules.content.ContentItem; import com.rometools.modules.content.ContentModule; import com.rometools.modules.content.ContentModuleImpl; /** * @version $Revision: 1.3 $ * @author <a href="mailto:cooper@screaming-penguin.com">Robert "kebernet" Cooper</a> */ public class ContentModuleParser implements com.rometools.rome.io.ModuleParser { private static final Namespace CONTENT_NS = Namespace.getNamespace("content", ContentModule.URI); private static final Namespace RDF_NS = Namespace.getNamespace("rdf", ContentModule.RDF_URI); /** Creates a new instance of ContentModuleParser */ public ContentModuleParser() { } @Override public String getNamespaceUri() { return ContentModule.URI; } @Override public com.rometools.rome.feed.module.Module parse(final Element element, final Locale locale) { boolean foundSomething = false; final ContentModule cm = new ContentModuleImpl(); final List<Element> encodeds = element.getChildren("encoded", CONTENT_NS); final ArrayList<String> contentStrings = new ArrayList<String>(); final ArrayList<String> encodedStrings = new ArrayList<String>(); if (!encodeds.isEmpty()) { foundSomething = true; for (int i = 0; i < encodeds.size(); i++) { final Element encodedElement = encodeds.get(i); encodedStrings.add(encodedElement.getText()); contentStrings.add(encodedElement.getText()); } } final ArrayList<ContentItem> contentItems = new ArrayList<ContentItem>(); final List<Element> items = element.getChildren("items", CONTENT_NS); for (int i = 0; i < items.size(); i++) { foundSomething = true; final List<Element> lis = items.get(i).getChild("Bag", RDF_NS).getChildren("li", RDF_NS); for (int j = 0; j < lis.size(); j++) { final ContentItem ci = new ContentItem(); final Element li = lis.get(j); final Element item = li.getChild("item", CONTENT_NS); final Element format = item.getChild("format", CONTENT_NS); final Element encoding = item.getChild("encoding", CONTENT_NS); final Element value = item.getChild("value", RDF_NS); if (value != null) { if (value.getAttributeValue("parseType", RDF_NS) != null) { ci.setContentValueParseType(value.getAttributeValue("parseType", RDF_NS)); } if (ci.getContentValueParseType() != null && ci.getContentValueParseType().equals("Literal")) { ci.setContentValue(getXmlInnerText(value)); contentStrings.add(getXmlInnerText(value)); ci.setContentValueNamespaces(value.getAdditionalNamespaces()); } else { ci.setContentValue(value.getText()); contentStrings.add(value.getText()); } ci.setContentValueDOM(value.clone().getContent()); } if (format != null) { ci.setContentFormat(format.getAttribute("resource", RDF_NS).getValue()); } if (encoding != null) { ci.setContentEncoding(encoding.getAttribute("resource", RDF_NS).getValue()); } if (item != null) { final Attribute about = item.getAttribute("about", RDF_NS); if (about != null) { ci.setContentAbout(about.getValue()); } } contentItems.add(ci); } } cm.setEncodeds(encodedStrings); cm.setContentItems(contentItems); cm.setContents(contentStrings); return foundSomething ? cm : null; } protected String getXmlInnerText(final Element e) { final StringBuffer sb = new StringBuffer(); final XMLOutputter xo = new XMLOutputter(); final List<Content> children = e.getContent(); sb.append(xo.outputString(children)); return sb.toString(); } }