/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.clerezza.rdf.facade.blackbox;
import com.hp.hpl.jena.datatypes.xsd.impl.XMLLiteralType;
import com.hp.hpl.jena.rdf.model.Literal;
import junit.framework.Assert;
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.RSIterator;
import com.hp.hpl.jena.rdf.model.Resource;
import com.hp.hpl.jena.rdf.model.Statement;
import com.hp.hpl.jena.rdf.model.StmtIterator;
import com.hp.hpl.jena.vocabulary.RDF;
import com.hp.hpl.jena.vocabulary.RDFS;
import java.io.StringWriter;
import org.junit.Test;
import org.apache.clerezza.rdf.core.MGraph;
import org.apache.clerezza.rdf.core.UriRef;
import org.apache.clerezza.rdf.core.impl.PlainLiteralImpl;
import org.apache.clerezza.rdf.core.impl.SimpleMGraph;
import org.apache.clerezza.rdf.core.impl.TripleImpl;
import org.apache.clerezza.rdf.jena.facade.JenaGraph;
import org.wymiwyg.commons.util.Util;
/**
*
* @author reto
*/
public class TestBasics {
@Test
public void serializeGraph() {
final String uriString = "http://example.org/foo#bar";
UriRef uri = new UriRef(uriString);
MGraph mGraph = new SimpleMGraph();
mGraph.add(new TripleImpl(uri, uri, new PlainLiteralImpl("bla bla")));
com.hp.hpl.jena.graph.Graph graph = new JenaGraph(mGraph);
Model model = ModelFactory.createModelForGraph(graph);
StringWriter writer = new StringWriter();
model.write(writer);
Assert.assertTrue(writer.toString().contains("about=\""+uriString));
}
@Test
public void graphSize() {
UriRef uri = new UriRef("http://example.org/foo#bar");
MGraph mGraph = new SimpleMGraph();
mGraph.add(new TripleImpl(uri, uri, new PlainLiteralImpl("bla bla")));
com.hp.hpl.jena.graph.Graph graph = new JenaGraph(mGraph);
Assert.assertEquals(1, graph.size());
}
@Test
public void modifyingJenaGraph() {
MGraph mGraph = new SimpleMGraph();
com.hp.hpl.jena.graph.Graph graph = new JenaGraph(mGraph);
Model model = ModelFactory.createModelForGraph(graph);
model.add(RDFS.Class, RDF.type, RDFS.Class);
Assert.assertEquals(1, mGraph.size());
}
@Test
public void typedLiterals() {
MGraph mGraph = new SimpleMGraph();
com.hp.hpl.jena.graph.Graph graph = new JenaGraph(mGraph);
Model model = ModelFactory.createModelForGraph(graph);
Literal typedLiteral = model.createTypedLiteral("<elem>foo</elem>", XMLLiteralType.theXMLLiteralType);
model.add(RDFS.Class, RDFS.label, typedLiteral);
Assert.assertEquals(1, mGraph.size());
StmtIterator iter = model.listStatements(RDFS.Class, RDFS.label, (Resource)null);
Assert.assertTrue(iter.hasNext());
RDFNode gotObject = iter.nextStatement().getObject();
Assert.assertEquals(typedLiteral, gotObject);
}
@Test
public void reifications() {
MGraph mGraph = new SimpleMGraph();
com.hp.hpl.jena.graph.Graph graph = new JenaGraph(mGraph);
//Model memModel = ModelFactory.createDefaultModel();
Model model = ModelFactory.createModelForGraph(graph);
model.add(RDFS.Resource, RDF.type, RDFS.Resource);
Resource bnode = model.createResource();
model.add(bnode, RDF.type, RDF.Statement);
model.add(bnode, RDF.subject, RDFS.Resource);
model.add(bnode, RDF.predicate, RDF.type);
model.add(bnode, RDF.object, RDFS.Resource);
model.add(bnode, RDFS.comment, "we knew that before");
StmtIterator stmts = model.listStatements(RDFS.Resource, null, (RDFNode)null);
Statement returnedStmt = stmts.nextStatement();
RSIterator rsIterator = returnedStmt.listReifiedStatements();
Assert.assertTrue("got back reified statement", rsIterator.hasNext());
//recreating jena-graph
graph = new JenaGraph(mGraph);
model = ModelFactory.createModelForGraph(graph);
stmts = model.listStatements(RDFS.Resource, null, (RDFNode)null);
returnedStmt = stmts.nextStatement();
rsIterator = returnedStmt.listReifiedStatements();
Assert.assertTrue("got back reified statement on recreated graph",
rsIterator.hasNext());
}
}