www.pudn.com > Caliph_v0.9.13+Emirv0.8.5-src.zip > OCToolkit.java

/* 
 * This file is part of Caliph & Emir. 
 * 
 * Caliph & Emir 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. 
 * 
 * Caliph & Emir 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 Caliph & Emir; if not, write to the Free Software 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
 * 
 * Copyright statement: 
 * -------------------- 
 * (c) 2002-2004 by Mathias Lux (mathias@juggle.at) and the Know-Center Graz 
 * Inffeldgasse 21a, 8010 Graz, Austria 
 * http://www.know-center.at 
 */ 
 
package at.know.center.wv_wr.imb.objectcatalog; 
 
import org.jaxen.XPath; 
import org.jaxen.jdom.JDOMXPath; 
import org.jdom.Namespace; 
 
import java.io.File; 
import java.net.MalformedURLException; 
import java.net.URL; 
import java.util.List; 
import java.util.StringTokenizer; 
import java.util.Vector; 
 
/** 
 * This file is part of Caliph & Emir. 
 * @author Mathias Lux, mathias@juggle.at 
 */ 
public class OCToolkit { 
    public static URL getLog4JPropertyFile() { 
        URL returnURL = null; 
        try { 
            returnURL = new File("log4j.properties").toURL(); 
        } catch (MalformedURLException e) { 
            e.printStackTrace(); 
        } 
        return returnURL; 
    } 
 
 
    public static URL getRelationsFile() { 
        return OCToolkit.class.getResource("data/mpeg7-relations.xml"); 
    } 
 
    public static URL getBaseObjectsFile() { 
        return OCToolkit.class.getResource("data/base-objects.mp7.xml"); 
    } 
 
    public static List xpathQuery(org.jdom.Document document, String xpathQuery1, Namespace xNs) { 
        List returnValue = new Vector(); 
        String xpathQuery = xpathQuery1; 
        XPath xPath; 
        try { 
            // if there is a xmlns namespace wihtout a prefix, then 
            // a default one has to be added. Otherwise jaxen does not work 
            // Note: the prefix "x" has to be used in the xpath-query as well. 
            Namespace ns = document.getRootElement().getNamespace(); 
            if (ns.getPrefix().length() == 0) { 
                StringTokenizer tokens = new StringTokenizer(xpathQuery, "/", true); 
                xpathQuery = ""; 
                while (tokens.hasMoreTokens()) { 
                    String token = tokens.nextToken(); 
                    if (!token.equalsIgnoreCase("/")) { 
                        token = "x:" + token; 
                    } 
                    xpathQuery += token; 
                } 
 
                xPath = new JDOMXPath(xpathQuery); 
                xPath.addNamespace("x", ns.getURI()); 
            } else { 
                xPath = new JDOMXPath(xpathQuery); 
            } 
 
            if (xNs != null) { 
                xPath.addNamespace(xNs.getPrefix(), xNs.getURI()); 
            } 
 
            // console.echo("OLD: \"" + xpathQuery1 + "\", NEW: \"" + xpathQuery + "\""); 
 
            Object jdomNode = document; // Document, Element etc. 
            //XPath path = new JDOMXPath("/*"); //--> das root element 
 
            returnValue = xPath.selectNodes(jdomNode); // entries are from the type "org.jdom.Element" 
        } catch (Exception e) { 
            e.printStackTrace(); 
        } 
 
        return returnValue; 
    } 
 
    public static Namespace getFSWNamespace() { 
        return Namespace.getNamespace("fsw", "http://www.at.know-center.at/fsw"); 
    } 
 
}