/**
* KOSHIK is an NLP framework for large scale processing using Hadoop.
* Copyright © 2014 Peter Exner
*
* This file is part of KOSHIK.
*
* KOSHIK is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* KOSHIK 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with KOSHIK. If not, see <http://www.gnu.org/licenses/>.
*/
package se.lth.cs.koshik.input.wikipedia.language;
import java.io.ByteArrayInputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.sweble.wikitext.engine.EngineException;
import org.sweble.wikitext.engine.PageId;
import org.sweble.wikitext.engine.PageTitle;
import org.sweble.wikitext.engine.WtEngineImpl;
import org.sweble.wikitext.engine.config.WikiConfig;
import org.sweble.wikitext.engine.nodes.EngProcessedPage;
import org.sweble.wikitext.engine.utils.DefaultConfigEnWp;
import org.sweble.wikitext.parser.parser.LinkTargetException;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import se.lth.cs.koshik.analysis.wikipedia.TextConverter;
import se.lth.cs.koshik.model.Document;
public abstract class WikipediaPage {
protected Integer namespace;
protected Long id;
protected Long revision;
protected String title;
protected String wikiText;
protected boolean isDisambiguationPage;
protected boolean isRedirectionPage;
protected boolean isStubPage;
public abstract boolean isDisambiguationPage();
public abstract boolean isRedirectionPage();
public abstract boolean isStubPage();
protected abstract void parsePageType();
public boolean isArticle() {
return (this.namespace == 0) && !this.isDisambiguationPage && !this.isRedirectionPage && !this.isStubPage;
}
public void readFromXMLPage(String xmlPage, String charset) {
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
org.w3c.dom.Document doc = db.parse(new ByteArrayInputStream(xmlPage.getBytes(charset)));
doc.getDocumentElement().normalize();
this.namespace = Integer.parseInt(doc.getElementsByTagName("ns").item(0).getTextContent());
NodeList revisionNodeList = doc.getElementsByTagName("revision");
if(revisionNodeList.getLength() == 1) {
this.wikiText = ((Element) revisionNodeList.item(0)).getElementsByTagName("text").item(0).getTextContent();
this.id = Long.parseLong(doc.getElementsByTagName("id").item(0).getTextContent());
this.title = doc.getElementsByTagName("title").item(0).getTextContent();
this.revision = Long.parseLong(((Element) revisionNodeList.item(0)).getElementsByTagName("id").item(0).getTextContent());
parsePageType();
}
} catch(Exception e) {
e.printStackTrace();
}
}
public Document getDocument() {
Document document = new Document();
document.setIdentifier(this.id.toString());
document.setRevision(this.revision.toString());
document.setTitle(this.title);
try {
WikiConfig config = DefaultConfigEnWp.generate();
WtEngineImpl engine = new WtEngineImpl(config);
PageTitle pageTitle = PageTitle.make(config, this.title);
PageId pageId = new PageId(pageTitle, this.revision);
EngProcessedPage cp = engine.postprocess(pageId, this.wikiText, null);
TextConverter p = new TextConverter(config, document);
p.go(cp.getPage());
} catch (Exception e) {
document = null;
e.printStackTrace();
}
return document;
}
}