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// ODMetaHandler.java
// (C) 2009 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
// first published 18.07.2009 on http://yacy.net
//
// This is a part of YaCy, a peer-to-peer based web search engine
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
// LICENSE
//
// This program 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 2 of the License, or
// (at your option) any later version.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package net.yacy.document.parser.xml;
import java.text.ParseException;
import java.util.Date;
import net.yacy.cora.date.ISO8601Formatter;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
public class ODMetaHandler extends DefaultHandler {
private final StringBuilder buffer = new StringBuilder();
private String docCreator = null;
private String docLanguage = null;
private String docKeyword = null;
private String docSubject = null;
private String docTitle = null;
private String docDescription = null;
private String docLastmodified = null;
public ODMetaHandler() {
}
@Override
public void characters(final char ch[], final int start, final int length) {
buffer.append(ch, start, length);
}
@Override
public void startElement(final String uri, final String name, final String tag, final Attributes atts) throws SAXException {
buffer.delete(0, buffer.length());
}
@Override
public void endElement(final String uri, final String name, final String tag) {
if ("dc:creator".equals(tag)) {
this.docCreator = buffer.toString();
} else if ("dc:language".equals(tag)) {
this.docLanguage = buffer.toString();
} else if ("meta:keyword".equals(tag)) {
this.docKeyword = buffer.toString();
} else if ("dc:subject".equals(tag)) {
this.docSubject = buffer.toString();
} else if ("dc:title".equals(tag)) {
this.docTitle = buffer.toString();
} else if ("dc:description".equals(tag)) {
this.docDescription = buffer.toString();
} else if ("dcterms:modified".equals(tag) || "dc:date".equals(tag)) { // Microsoft uses <dcterms:modified>, OpenOffice <dc:date>
this.docLastmodified = buffer.toString();
}
}
public String getCreator() {
return docCreator;
}
public String getLanguage() {
return docLanguage;
}
public String getKeyword() {
return docKeyword;
}
public String getSubject() {
return docSubject;
}
public String getTitle() {
return docTitle;
}
public String getDescription() {
return docDescription;
}
/**
* get the last modification date of the document
*
* @return date or null
*/
public Date getLastModified() {
Date d;
if (docLastmodified != null && !docLastmodified.isEmpty()) {
try {
d = ISO8601Formatter.FORMATTER.parse(this.docLastmodified, 0).getTime();
} catch (ParseException ex) {
d = null;
}
} else {
d = null;
}
return d;
}
}
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