/*
* 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.jena.rdf.model.test;
import java.util.Set;
import org.apache.jena.rdf.model.* ;
import org.apache.jena.rdf.model.test.helpers.ModelHelper ;
import org.apache.jena.rdf.model.test.helpers.TestingModelFactory ;
import org.apache.jena.test.JenaTestBase ;
import org.apache.jena.vocabulary.RDF ;
import org.junit.Assert;
public class TestReifiedStatements extends AbstractModelTestBase
{
private Resource S;
private Property P;
private RDFNode O;
private Statement SPO;
private Statement SPO2;
private static final String aURI = "jena:test/reifying#someURI";
private static final String anotherURI = "jena:test/reifying#anotherURI";
private static final String anchor = "jena:test/Reifying#";
public TestReifiedStatements( final TestingModelFactory modelFactory,
final String name )
{
super(modelFactory, name);
}
/**
* utility method: get a set of all the elements delivered by
* _m.listReifiedStatements_.
*/
public Set<ReifiedStatement> getSetRS( final Model m )
{
return m.listReifiedStatements().toSet();
}
public Set<ReifiedStatement> getSetRS( final Model m, final Statement st )
{
return m.listReifiedStatements(st).toSet();
}
@Override
public void setUp()
{
model = createModel();
final Resource S2 = model.createResource(TestReifiedStatements.anchor
+ "subject2");
S = model.createResource(TestReifiedStatements.anchor + "subject");
P = model.createProperty(TestReifiedStatements.anchor + "predicate");
O = model.createLiteral(TestReifiedStatements.anchor + "object");
SPO = model.createStatement(S, P, O);
SPO2 = model.createStatement(S2, P, O);
}
/**
* the simplest case: if we assert all the components of a reification quad,
* we can get a ReifiedStatement that represents the reified statement.
*/
public void testBasicReification()
{
final Resource R = model.createResource(TestReifiedStatements.aURI);
model.add(R, RDF.type, RDF.Statement);
model.add(R, RDF.subject, S);
model.add(R, RDF.predicate, P);
model.add(R, RDF.object, O);
final RDFNode rs = R.as(ReifiedStatement.class);
Assert.assertEquals("can recover statement", SPO,
((ReifiedStatement) rs).getStatement());
}
/**
* walk down the set of statements (represented as an array), recursing with
* and
* without each statement being present. The mask bits record those
* statements
* that are in the model. At the bottom of the recursion (n == 0), check
* that R
* can be reified exactly when all four quad components are present; the
* other
* statements don't matter.
*/
private void testCombinations( final Model m, final Resource R,
final int mask, final Object[][] statements, final int n )
{
if (n == 0)
{
try
{
// System.err.println( "| hello. mask = " + mask );
final ReifiedStatement rs = R.as(ReifiedStatement.class);
// System.err.println( "+ we constructed " + rs );
Assert.assertTrue(
"should not reify: not all components present [" + mask
+ "]: " + rs, (mask & 15) == 15);
// System.err.println( "+ and we passed the assertion." );
}
catch (final DoesNotReifyException e)
{ // System.err.println( "+ we exploded" );
Assert.assertFalse("should reify: all components present",
mask == 15);
}
}
else
{
final int i = n - 1;
final Statement s = (Statement) statements[i][0];
final int bits = (Integer) statements[i][1];
testCombinations(m, R, mask, statements, i);
m.add(s);
testCombinations(m, R, mask + bits, statements, i);
m.remove(s);
}
}
public void testConstructionByURI()
{
final ReifiedStatement rs = model.createReifiedStatement("spoo:handle",
SPO);
final ReifiedStatement rs2 = SPO.createReifiedStatement("spoo:gripper");
Assert.assertEquals("recover statement (URI)", SPO, rs.getStatement());
Assert.assertEquals("recover URI", "spoo:handle", rs.getURI());
Assert.assertEquals("recover URI", "spoo:gripper", rs2.getURI());
}
public void testConstructionFromModels()
{
testStatementAndModel("fromModel", model.createReifiedStatement(SPO),
model, SPO);
}
public void testConstructionFromStatements()
{
testStatementAndModel("fromStatement", SPO.createReifiedStatement(),
model, SPO);
}
public void testConversion()
{
final String uri = "spoo:handle";
model.createReifiedStatement(uri, SPO);
final ReifiedStatement rs2 = model.createResource(uri).as(
ReifiedStatement.class);
Assert.assertEquals("recover statement", SPO, rs2.getStatement());
}
/**
* "dirty" reifications - those with conflicting quadlets - should fail.
*/
public void testDirtyReification()
{
final Resource R = model.createResource(TestReifiedStatements.aURI);
model.add(R, RDF.type, RDF.Statement);
model.add(R, RDF.subject, S);
model.add(R, RDF.subject, P);
testDoesNotReify("boo", R);
}
public void testDoesNotReify( final String title, final Resource r )
{
try
{
r.as(ReifiedStatement.class);
Assert.fail(title + " (" + r + ")");
}
catch (final DoesNotReifyException e)
{ /* that's what we expect */
}
}
public void testDoesNotReifyElsewhere()
{
final String uri = "spoo:rubbish";
final Model m2 = createModel();
model.createReifiedStatement(uri, SPO);
testDoesNotReify("blue model should not reify rubbish",
m2.createResource(uri));
}
// public void testXXX()
// {
// String root = "http://root/root#";
// Model model = ModelFactory.createDefaultModel();
// Model r = ModelFactory.createRDFSModel( model );
// Resource S = r.createResource( root + "S" );
// Property P = r.createProperty( root + "P" );
// RDFNode O = r.createResource( root + "O" );
// Statement st = r.createStatement( S, P, O );
// ReifiedStatement rs = st.createReifiedStatement( root + "RS" );
// }
public void testDoesNotReifyUnknown()
{
testDoesNotReify("model should not reify rubbish",
model.createResource("spoo:rubbish"));
}
public void testGetAny()
{
final Resource r = model.getAnyReifiedStatement(SPO);
JenaTestBase.assertInstanceOf(ReifiedStatement.class, r);
Assert.assertEquals("should get me the statement", SPO,
((ReifiedStatement) r).getStatement());
}
public void testIsReified()
{
final ReifiedStatement rs = model.createReifiedStatement(
TestReifiedStatements.aURI, SPO);
final Resource BS = model.createResource(TestReifiedStatements.anchor
+ "BS");
final Property BP = model.createProperty(TestReifiedStatements.anchor
+ "BP");
final RDFNode BO = model.createProperty(TestReifiedStatements.anchor
+ "BO");
model.add(rs, P, O);
Assert.assertTrue("st should be reified now", SPO.isReified());
Assert.assertTrue("model should have st reified now",
model.isReified(SPO));
Assert.assertFalse("this new statement should not be reified", model
.createStatement(BS, BP, BO).isReified());
}
/**
* Leo Bard spotted a problem whereby removing a reified statement from a
* model
* with style Standard didn't leave the model empty. Here's a test for it.
*/
public void testLeosBug()
{
final Statement st = ModelHelper.statement(model, "pigs fly south");
final ReifiedStatement rst = st.createReifiedStatement("eh:pointer");
model.removeReification(rst);
ModelHelper.assertIsoModels(ModelFactory.createDefaultModel(), model);
}
/**
* this test appeared when TestStatementResources crashed using reified
* statements as a step-0 implementation for asSubject()/asObject(). Looks
* like there was a problem in modelReifier().getRS(), which we're fixing
* ...
*/
public void testListDoesntCrash()
{
model.createReifiedStatement(SPO);
model.createReifiedStatement(SPO2);
Assert.assertTrue("should be non-empty", model.listReifiedStatements()
.hasNext());
}
private void testNotReifying( final Model m, final String uri )
{
try
{
m.createResource(uri).as(ReifiedStatement.class);
Assert.fail("there should be no reifiedStatement for " + uri);
}
catch (final DoesNotReifyException e)
{ /* that's what we require */
}
}
public void testQuintetOfQuadlets()
{
final Resource rs = model.createResource();
rs.addProperty(RDF.type, RDF.Statement);
model.createResource().addProperty(RDF.value, rs);
rs.addProperty(RDF.subject, model.createResource());
rs.addProperty(RDF.predicate,
model.createProperty("http://example.org/foo"));
rs.addProperty(RDF.object, model.createResource());
rs.addProperty(RDF.object, model.createResource());
final StmtIterator it = model.listStatements();
while (it.hasNext())
{
final Statement s = it.nextStatement();
Assert.assertFalse(s.getObject().equals(s.getSubject()));
}
}
/**
* check that, from a model with any combination of the statements given,
* we can convert R into a ReifiedStatement iff the four components of the
* quad are in the model.
*/
public void testReificationCombinations()
{
final Resource RR = model.createResource(TestReifiedStatements.aURI), SS = model
.createResource(TestReifiedStatements.anotherURI);
final Property PP = RR.as(Property.class);
final Object[][] statements = {
{ model.createStatement(RR, RDF.type, RDF.Statement), 1 },
{ model.createStatement(RR, RDF.subject, SS), 2 },
{ model.createStatement(RR, RDF.predicate, PP), 4 },
{ model.createStatement(RR, RDF.object, O), 8 },
{ model.createStatement(SS, PP, O), 16 },
{ model.createStatement(RR, PP, O), 32 },
{ model.createStatement(SS, RDF.subject, SS), 64 },
{ model.createStatement(SS, RDF.predicate, PP), 128 },
{ model.createStatement(SS, RDF.object, O), 256 },
{ model.createStatement(SS, RDF.type, RDF.Statement), 512 } };
testCombinations(model, RR, 0, statements, statements.length);
}
public void testRemoveReificationWorks()
{
final Statement st = SPO;
model.createReifiedStatement(TestReifiedStatements.aURI, st);
Assert.assertTrue("st is now reified", st.isReified());
model.removeAllReifications(st);
Assert.assertFalse("st is no longer reified", st.isReified());
}
public void testRR()
{
final Statement st = SPO;
final ReifiedStatement rs1 = model.createReifiedStatement(
TestReifiedStatements.aURI, st);
final ReifiedStatement rs2 = model.createReifiedStatement(
TestReifiedStatements.anotherURI, st);
model.removeReification(rs1);
testNotReifying(model, TestReifiedStatements.aURI);
Assert.assertTrue("st is still reified", st.isReified());
model.removeReification(rs2);
Assert.assertFalse("st should no longer be reified", st.isReified());
}
public void testStatementAndModel( final String title,
final ReifiedStatement rs, final Model m, final Statement st )
{
Assert.assertEquals(title + ": recover statement", st,
rs.getStatement());
Assert.assertEquals(title + ": recover model", m, rs.getModel());
}
public void testThisWillBreak()
{
final Resource R = model.createResource(TestReifiedStatements.aURI);
SPO.createReifiedStatement(TestReifiedStatements.aURI);
model.add(R, RDF.subject, R);
}
}