/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-2005, Wolfgang M. Meier (meier@ifs.tu-darmstadt.de)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License
* as published by the Free Software Foundation; either version 2
* 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 Library General Public License for more details.
*
* You should have received a copy of the GNU Library 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.
*
* $Id:
*/
package org.exist.xmldb;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import org.xmldb.api.base.Resource;
import org.xmldb.api.base.ResourceSet;
import org.xmldb.api.base.XMLDBException;
/**
* @author jmv
*
*/
public class ResourceSetHelper {
public static ResourceSet intersection(ResourceSet s1, ResourceSet s2) throws XMLDBException {
Map m1 = new MapResourceSet(s1).getResourcesMap();
Map m2 = new MapResourceSet(s2).getResourcesMap();
Set set1 = m1.keySet();
Set set2 = m2.keySet();
set1.retainAll(set2);
Map m = new HashMap();
Iterator iter = set1.iterator();
while ( iter.hasNext() ) {
String key = (String)iter.next();
Resource resource = (Resource)m1.get(key);
m.put(key, resource);
}
MapResourceSet res = new MapResourceSet(m);
/*
VectorResourceSet res = new VectorResourceSet();
Collection c1 = new VectorResourceSet(s1).getResources();
res.getResources().addAll( c1 );
Collection c2 = new VectorResourceSet(s2).getResources();
res.getResources().retainAll(c2);
return res;
*/
return res;
}
}