Added new renderer into a SKOS file

src/fr/inrialpes/exmo/align/impl/renderer/SKOSRendererVisitor.java

+/*
+ * $Id$
+ *
+ * Copyright (C) INRIA Rhne-Alpes, 2003-2004, 2006
+ *
+ * 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.renderer; 
+
+import java.util.Hashtable;
+import java.util.Enumeration;
+import java.io.PrintWriter;
+import java.io.IOException;
+import java.lang.reflect.Method;
+import java.net.URI;
+
+import org.xml.sax.ContentHandler;
+import org.xml.sax.SAXException;
+
+import org.semanticweb.owl.model.OWLOntology;
+import org.semanticweb.owl.model.OWLEntity;
+import org.semanticweb.owl.model.OWLException;
+
+import org.semanticweb.owl.align.Alignment;
+import org.semanticweb.owl.align.AlignmentVisitor;
+import org.semanticweb.owl.align.AlignmentException;
+import org.semanticweb.owl.align.Cell;
+import org.semanticweb.owl.align.Relation;
+
+import fr.inrialpes.exmo.align.impl.rel.*;
+
+/**
+ * Renders an alignment as a new ontology merging these.
+ *
+ * @author Jrme Euzenat
+ * @version $$ 
+ */
+
+
+public class SKOSRendererVisitor implements AlignmentVisitor
+{
+    PrintWriter writer = null;
+    Alignment alignment = null;
+    Cell cell = null;
+
+    public SKOSRendererVisitor( PrintWriter writer ){
+	this.writer = writer;
+    }
+
+    // This must be considered
+    public void visit( Alignment align ) throws AlignmentException {
+	alignment = align;
+	writer.print("<rdf:RDF\n");
+	writer.print("  xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\n"); 
+	writer.print("  xmlns:rdfs=\"http://www.w3.org/2000/01/rdf-schema#\"\n");
+	writer.print("  xmlns:skos=\"http://www.w3.org/2004/02/skos/core#\">\n\n");
+	for( Enumeration e = align.getElements() ; e.hasMoreElements(); ){
+	    Cell c = (Cell)e.nextElement();
+	    c.accept( this );
+	} //end for
+	writer.print("</rdf:RDF>\n");
+    }
+
+    public void visit( Cell cell ) throws AlignmentException {
+	this.cell = cell;
+	try {
+	    OWLOntology onto1 = (OWLOntology)alignment.getOntology1();
+	    URI entity1URI = ((OWLEntity)cell.getObject1()).getURI();
+	    writer.print("  <skos:Concept rdf:about=\""+entity1URI.toString()+"\">\n");
+	    cell.getRelation().accept( this );
+	    writer.print("  </skos:Concept>\n\n");
+	} catch (OWLException e) { throw new AlignmentException("getURI problem", e); }
+    }
+    public void visit( EquivRelation rel ) throws AlignmentException {
+	try {
+	    OWLOntology onto2 = (OWLOntology)alignment.getOntology2();
+	    URI entity2URI = ((OWLEntity)cell.getObject2()).getURI();
+	    writer.print("    <skos:related rdf:resource=\""+entity2URI.toString()+"\"/>\n");
+	} catch (OWLException e) { throw new AlignmentException("getURI problem", e); }
+    }
+    public void visit( SubsumeRelation rel ) throws AlignmentException {
+	try {
+	    OWLOntology onto2 = (OWLOntology)alignment.getOntology2();
+	    URI entity2URI = ((OWLEntity)cell.getObject2()).getURI();
+	    writer.print("    <skos:narrower rdf:resource=\""+entity2URI.toString()+"\"/>\n");
+	} catch (OWLException e) { throw new AlignmentException("getURI problem", e); }
+    }
+    public void visit( SubsumedRelation rel ) throws AlignmentException {
+	try {
+	    OWLOntology onto2 = (OWLOntology)alignment.getOntology2();
+	    URI entity2URI = ((OWLEntity)cell.getObject2()).getURI();
+	    writer.print("    <skos:broader rdf:resource=\""+entity2URI.toString()+"\"/>\n");
+	} catch (OWLException e) { throw new AlignmentException("getURI problem", e); }
+    }
+    public void visit( IncompatRelation rel ) throws AlignmentException {
+	throw new AlignmentException("Cannot translate in SKOS"+rel);
+    }
+    public void visit( Relation rel ) throws AlignmentException {
+	// JE: I do not understand why I need this,
+	// but this seems to be the case...
+	try {
+	    Method mm = null;
+	    if ( Class.forName("fr.inrialpes.exmo.align.impl.rel.EquivRelation").isInstance(rel) ){
+		mm = this.getClass().getMethod("visit",
+					       new Class [] {Class.forName("fr.inrialpes.exmo.align.impl.rel.EquivRelation")});
+	    } else if (Class.forName("fr.inrialpes.exmo.align.impl.rel.SubsumeRelation").isInstance(rel) ) {
+		mm = this.getClass().getMethod("visit",
+					       new Class [] {Class.forName("fr.inrialpes.exmo.align.impl.rel.SubsumeRelation")});
+	    } else if (Class.forName("fr.inrialpes.exmo.align.impl.rel.SubsumedRelation").isInstance(rel) ) {
+		mm = this.getClass().getMethod("visit",
+					       new Class [] {Class.forName("fr.inrialpes.exmo.align.impl.rel.SubsumedRelation")});
+	    } else if (Class.forName("fr.inrialpes.exmo.align.impl.rel.IncompatRelation").isInstance(rel) ) {
+		mm = this.getClass().getMethod("visit",
+					       new Class [] {Class.forName("fr.inrialpes.exmo.align.impl.rel.IncompatRelation")});
+	    }
+	    if ( mm != null ) mm.invoke(this,new Object[] {rel});
+	} catch (Exception e) { throw new AlignmentException("Dispatching problem ", e); };
+    };
+}