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org.mindswap.pellet.jena.NodeFormatter Maven / Gradle / Ivy
// Portions Copyright (c) 2006 - 2008, Clark & Parsia, LLC.
// Clark & Parsia, LLC parts of this source code are available under the terms of the Affero General Public License v3.
//
// Please see LICENSE.txt for full license terms, including the availability of proprietary exceptions.
// Questions, comments, or requests for clarification: [email protected]
package org.mindswap.pellet.jena;
import java.io.PrintWriter;
import java.io.StringWriter;
import org.mindswap.pellet.jena.vocabulary.OWL2;
import org.mindswap.pellet.output.ATermManchesterSyntaxRenderer;
import org.mindswap.pellet.output.ATermRenderer;
import org.mindswap.pellet.utils.ATermUtils;
import org.mindswap.pellet.utils.QNameProvider;
import aterm.ATerm;
import aterm.ATermAppl;
import aterm.ATermList;
import com.hp.hpl.jena.rdf.model.InfModel;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.rdf.model.RDFNode;
import com.hp.hpl.jena.rdf.model.Resource;
import com.hp.hpl.jena.rdf.model.Statement;
import com.hp.hpl.jena.reasoner.InfGraph;
import com.hp.hpl.jena.vocabulary.OWL;
import com.hp.hpl.jena.vocabulary.RDF;
/**
* @author Evren Sirin
*
*/
public class NodeFormatter {
private QNameProvider qnames;
private StringWriter sw;
private ATermRenderer renderer;
private PrintWriter formatter;
private Model rawModel;
private final static Resource NULL = null;
// private Set usedStatements;
public NodeFormatter(Model model) {
if(model == null)
throw new NullPointerException("No model given!");
//renderer = new ATermAbstractSyntaxRenderer();
renderer = new ATermManchesterSyntaxRenderer();
sw = new StringWriter();
formatter = new PrintWriter(sw);
renderer.setWriter(formatter);
qnames = JenaUtils.makeQNameProvider(model);
// formatter.setQNames(qnames);
if(model instanceof InfModel) {
InfGraph graph = (InfGraph) model.getGraph();
rawModel = ModelFactory.createModelForGraph( graph.getRawGraph() );
}
else
rawModel = model;
}
public QNameProvider getQNames() {
return qnames;
}
public String format(RDFNode node) {
if(node == null)
return "<>";
// usedStatements = new HashSet();
sw.getBuffer().setLength(0);
ATerm term = node2term(node);
if(term instanceof ATermAppl)
renderer.visit((ATermAppl) term);
else {
sw.write("{");
renderer.visitList((ATermList) term);
sw.write("}");
}
return sw.toString();
}
public ATerm node2term(RDFNode node) {
ATerm aTerm = null;
if(node.equals(OWL.Thing))
return ATermUtils.TOP;
else if(node.equals(OWL.Nothing))
return ATermUtils.BOTTOM;
else if (node.equals( OWL2.topDataProperty ))
return ATermUtils.TOP_DATA_PROPERTY;
else if (node.equals( OWL2.bottomDataProperty ))
return ATermUtils.BOTTOM_DATA_PROPERTY;
else if (node.equals( OWL2.topObjectProperty ))
return ATermUtils.TOP_OBJECT_PROPERTY;
else if (node.equals( OWL2.bottomObjectProperty ))
return ATermUtils.BOTTOM_OBJECT_PROPERTY;
else if(node instanceof com.hp.hpl.jena.rdf.model.Literal) {
com.hp.hpl.jena.rdf.model.Literal l = (com.hp.hpl.jena.rdf.model.Literal) node;
String datatypeURI = l.getDatatypeURI();
if(datatypeURI != null)
aTerm = ATermUtils.makeTypedLiteral(l.getString(), datatypeURI);
else
aTerm = ATermUtils.makePlainLiteral(l.getString(), l.getLanguage());
}
else if(node instanceof Resource) {
Resource r = (Resource) node;
if(rawModel.contains(r, OWL.onProperty, NULL)) {
aTerm = createRestriction(r);
}
else if(r.isAnon()) {
if(rawModel.contains(r, RDF.first, NULL)) {
aTerm = createList(r);
}
else if(rawModel.contains(r, OWL.intersectionOf)) {
ATermList list = createList(rawModel.getProperty(r, OWL.intersectionOf).getResource());
aTerm = ATermUtils.makeAnd(list);
}
else if(rawModel.contains(r, OWL.unionOf)) {
ATermList list = createList(rawModel.getProperty(r, OWL.unionOf).getResource());
aTerm = ATermUtils.makeOr(list);
}
else if(rawModel.contains(r, OWL.oneOf)) {
ATermList list = createList(rawModel.getProperty(r, OWL.oneOf).getResource());
ATermList result = ATermUtils.EMPTY_LIST;
for(ATermList l = list; !l.isEmpty(); l = l.getNext()) {
ATermAppl c = (ATermAppl) l.getFirst();
ATermAppl nominal = ATermUtils.makeValue(c);
result = result.insert(nominal);
}
aTerm = ATermUtils.makeOr(result);
}
else if(rawModel.contains(r, OWL.complementOf)) {
ATerm complement = node2term(rawModel.getProperty(r, OWL.complementOf).getResource());
aTerm = ATermUtils.makeNot(complement);
}
else
aTerm = ATermUtils.makeBnode(r.getId().toString());
}
else {
aTerm = ATermUtils.makeTermAppl(r.getURI());
}
}
return aTerm;
}
private ATermAppl createRestriction(Resource s) {
ATermAppl aTerm = ATermUtils.BOTTOM;
Statement stmt = rawModel.getProperty(s, OWL.onProperty);
// usedStatements.add(stmt);
Resource p = stmt.getResource();
ATerm pt = node2term(p);
if(s.hasProperty(OWL.hasValue)) {
stmt = rawModel.getProperty(s, OWL.hasValue);
RDFNode o = stmt.getObject();
// usedStatements.add(stmt);
ATerm ot = node2term(o);
aTerm = ATermUtils.makeHasValue(pt, ot);
}
else if(s.hasProperty(OWL.allValuesFrom)) {
stmt = rawModel.getProperty(s, OWL.allValuesFrom);
// usedStatements.add(stmt);
Resource o = stmt.getResource();
ATerm ot = node2term(o);
aTerm = ATermUtils.makeAllValues(pt, ot);
}
else if(s.hasProperty(OWL.someValuesFrom)) {
stmt = rawModel.getProperty(s, OWL.someValuesFrom);
// usedStatements.add(stmt);
Resource o = stmt.getResource();
ATerm ot = node2term(o);
aTerm = ATermUtils.makeSomeValues(pt, ot);
}
else if(s.hasProperty(OWL.minCardinality)) {
stmt = rawModel.getProperty(s, OWL.minCardinality);
// usedStatements.add(stmt);
int cardinality = 0;
try {
cardinality = stmt.getInt();
} // try
catch(Exception ex) {
cardinality = Integer.parseInt(stmt.getLiteral().getLexicalForm());
} // catch
aTerm = ATermUtils.makeDisplayMin(pt, cardinality, ATermUtils.EMPTY);
}
else if(s.hasProperty(OWL.maxCardinality)) {
stmt = rawModel.getProperty(s, OWL.maxCardinality);
// usedStatements.add(stmt);
int cardinality = 0;
try {
cardinality = stmt.getInt();
} // try
catch(Exception ex) {
cardinality = Integer.parseInt(stmt.getLiteral().getLexicalForm());
} // catch
aTerm = ATermUtils.makeDisplayMax(pt, cardinality, ATermUtils.EMPTY);
}
else if(s.hasProperty(OWL.cardinality)) {
stmt = rawModel.getProperty(s, OWL.cardinality);
// usedStatements.add(stmt);
int cardinality = 0;
try {
cardinality = stmt.getInt();
} // try
catch(Exception ex) {
cardinality = Integer.parseInt(stmt.getLiteral().getLexicalForm());
} // catch
aTerm = ATermUtils.makeDisplayCard(pt, cardinality, ATermUtils.EMPTY);
}
else {
}
return aTerm;
} // createRestriction
private ATermList createList(Resource r) {
if(r.equals(RDF.nil))
return ATermUtils.EMPTY_LIST;
else if(!rawModel.contains(r, RDF.first)) {
System.err.println("Invalid list structure: List " + r
+ " does not have a rdf:first property. Ignoring rest of the list.");
return ATermUtils.EMPTY_LIST;
}
ATerm first = node2term(rawModel.getProperty(r, RDF.first).getObject());
Resource rest = rawModel.getProperty(r, RDF.rest).getResource();
return ATermUtils.makeList(first, createList(rest));
} // createList
}
