diff --git a/src/fr/inrialpes/exmo/align/impl/OntologyCache.java b/src/fr/inrialpes/exmo/align/impl/OntologyCache.java
deleted file mode 100644
index 986bdfd5c5280d4e7853c91bc43d1f92a31120d4..0000000000000000000000000000000000000000
--- a/src/fr/inrialpes/exmo/align/impl/OntologyCache.java
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * $Id$
- *
- * Copyright (C) INRIA Rhône-Alpes, 2007-2008
- *
- * This program 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 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
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser 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 fr.inrialpes.exmo.align.impl; 
-
-// import java classes
-import java.util.Hashtable;
-import java.util.Enumeration;
-import java.net.URI;
-
-import org.semanticweb.owl.model.OWLOntology;
-import org.semanticweb.owl.model.OWLException;
-
-/**
- * This caches the loaded ontologies so that it is possible to share them between alignments
- * as well as to unload them if necessary.
- * This class is currently tied to the OWL API. It will be possible to extend it.
- * 
- * @author Jérôme Euzenat
- * @version $Id$ 
- */
-
-public class OntologyCache {
- 
-  /** The list of currently loaded ontologies as a function:
-   * URI --> Ontology
-   * This is the ontology URI, NOT its filename
-   */
-    Hashtable<URI,Object> ontologies = null;
-    
-    public OntologyCache() {
-	ontologies = new Hashtable<URI,Object>();
-    }
-  
-    public void recordOntology( URI uri, Object ontology ){
-	ontologies.put(uri,ontology);
-    }
-
-    public OWLOntology getOntology( URI uri ){
-	return (OWLOntology)ontologies.get( uri );
-    }
-
-    public void unloadOntology( URI uri, Object ontology ){
-	// used to be uri.toString();
-	Object o = ontologies.get(uri);
-	try {
-	    if ( o instanceof OWLOntology && o == ontology )
-		((OWLOntology)o).getOWLConnection().notifyOntologyDeleted( ((OWLOntology)o) );
-	} catch (OWLException ex) { System.err.println(ex); };
-	ontologies.remove( uri );
-    }
-
-    public void clear(){
-	try {
-	    for ( Enumeration e = ontologies.elements() ; e.hasMoreElements();  ){
-		Object o = e.nextElement();
-		if ( o instanceof OWLOntology )
-		    ((OWLOntology)o).getOWLConnection().notifyOntologyDeleted( (OWLOntology)o );
-	    }
-	} catch (OWLException ex) { System.err.println(ex); };
-	ontologies.clear();
-    }
-
-}