testbasicoperations.java

jena2.5.4推理机系统的一种最基本实现 HP实验室出品

		addRemove(model.createStatement(s, p, o));
	}

	public void testNoCompressHugeURI() throws java.lang.Exception {
		// in this test, the prefix exceeed longObjectLength but the
		// compressed URI is less than longObjectLength
		IDBConnection conn = TestConnection.makeAndCleanTestConnection();
		IRDBDriver d = conn.getDriver();
		d.setDoCompressURI(false);
		model = ModelRDB.createModel(conn);
		String pfx = "a123456789";
		String longPfx = "";
		long longLen = dbDriver.getLongObjectLength();
		// make long prefix
		while ( longPfx.length() < longLen )
			longPfx += pfx;
		String URI = longPfx + ":/www.foo/#bar";
		Resource s = model.createResource(URI);
		Property p = model.createProperty("test#predicate");
		Resource o = model.createResource("test#object");
		addRemove(model.createStatement(s, p, o));
	}
	
	public void testNoCompressHugeURI1() throws java.lang.Exception {
		// in this test, the prefix exceeed longObjectLength but the
		// compressed URI also exceeds longObjectLength
		IDBConnection conn = TestConnection.makeAndCleanTestConnection();
		IRDBDriver d = conn.getDriver();
		d.setDoCompressURI(false);
		model = ModelRDB.createModel(conn);
		String pfx = "a123456789";
		String longPfx = "";
		long longLen = dbDriver.getLongObjectLength();
		// make long prefix
		while ( longPfx.length() < longLen )
			longPfx += pfx;
		String URI = longPfx + ":/www.foo/#bar" + longPfx;
		Resource s = model.createResource(URI);
		Property p = model.createProperty("test#predicate");
		Resource o = model.createResource("test#object");
		addRemove(model.createStatement(s, p, o));
	}

	public void testAddRemoveHugeURI() throws java.lang.Exception {
		String pfx = "a123456789";
		String longPfx = "";
		long longLen = dbDriver.getLongObjectLength();
		// make long prefix
		while ( longPfx.length() < longLen )
			longPfx += pfx;
		String URI = longPfx + ":/www.foo/#bar" + longPfx;
		Resource s = model.createResource(URI);
		Property p = model.createProperty("test#predicate");
		Resource o = model.createResource("test#object");
		addRemove(model.createStatement(s, p, o));
	}
	
	public void testPrefixCache() throws java.lang.Exception {
		// in this test, add a number of long prefixes until the cache
		// overflows and then make sure they can be retrieved.
		IDBConnection conn = TestConnection.makeAndCleanTestConnection();
		IRDBDriver d = conn.getDriver();
		d.setDoCompressURI(true);
		model = ModelRDB.createModel(conn);
		int cacheSize = d.getCompressCacheSize();
		cacheSize = 10;
		d.setCompressCacheSize(cacheSize);

		String pfx = "a123456789";
		String longPfx = "";
		long longLen = dbDriver.getLongObjectLength();
		// make long prefix
		while ( longPfx.length() < longLen )
			longPfx += pfx;
		int i;
		for(i=0;i<cacheSize*2;i++) {
			String URI = longPfx + i + ":/www.foo/#bar";
			Resource s = model.createResource(URI);
			Property p = model.createProperty("test#predicate");
			Resource o = model.createResource("test#object");
			model.add(s, p, o);
		}
		for(i=0;i<cacheSize*2;i++) {
			String URI = longPfx + i + ":/www.foo/#bar";
			Resource s = model.createResource(URI);
			Property p = model.createProperty("test#predicate");
			Resource o = model.createResource("test#object");
			assertTrue(model.contains(s, p, o));
		}

	}
	
	public void testPrefixCachePersists() throws java.lang.Exception {
		// check that the prefix cache persists and affects all models in db.
		IDBConnection conn = TestConnection.makeAndCleanTestConnection();
		IRDBDriver d = conn.getDriver();
		d.setDoCompressURI(true);
		model = ModelRDB.createModel(conn);
		int cacheSize = d.getCompressCacheSize();
		d.setCompressCacheSize(cacheSize/2);	
		model.close();
		conn.close();
		
		conn = TestConnection.makeTestConnection();
		d = conn.getDriver();
		try {
			d.setDoCompressURI(false);
			assertFalse(true); // should not get here
		} catch (Exception e) {
			model = ModelRDB.createModel(conn,"NamedModel");
			assertTrue(d.getDoCompressURI() == true);
			assertTrue(d.getCompressCacheSize() == cacheSize);
		}
	}


	public void testAddRemoveDatatype() {
		Resource s = model.createResource("test#subject");
		Property p = model.createProperty("test#predicate");
		Literal l = model.createTypedLiteral("stringType");

		addRemove(model.createStatement(s, p, l));
	}

	public void testAddRemoveHugeDatatype() {
		String base = Data.strLong ;
		StringBuffer buffer = new StringBuffer(4096);
		while (buffer.length() < 4000)
			buffer.append(base);
		Resource s = model.createResource("test#subject");
		Property p = model.createProperty("test#predicate");
		Literal l2 = model.createTypedLiteral(buffer.toString());

		addRemove(model.createStatement(s, p, l2));
	}

	public void testAddRemoveBNode() {
		Resource s = model.createResource();
		Property p = model.createProperty("test#predicate");
		Resource o = model.createResource();

		addRemove(model.createStatement(s, p, o));

	}

	public void testBNodeIdentityPreservation() {
		Resource s = model.createResource();
		Property p = model.createProperty("test#predicate");
		Resource o = model.createResource();

		// Create two statements that differ only in
		// the identity of the bnodes - then perform
		// add-remove on one and verify the other is
		// unchanged.
		Statement spo = model.createStatement(s, p, o);
		Statement ops = model.createStatement(o, p, s);
		model.add(spo);
		addRemove(ops);
		assertTrue(model.contains(spo));
		model.remove(spo);
	}

	public void testDuplicateCheck() {
		Resource s = model.createResource();
		Property p = model.createProperty("test#predicate");
		Resource o = model.createResource();
		Statement spo = model.createStatement(s, p, o);
		model.add(spo);
		try {
			model.add(spo); // should be fine
			assertTrue(model.size() == 1);
		} catch (Exception e) {
			assertTrue(false); // should not get here
		}
		model.setDoDuplicateCheck(false);
		try {
			model.add(spo); // should be fine - just inserted a dup
			assertTrue(model.size() == 2);
		} catch (Exception e) {
			assertTrue(false); // should not get here
		}
	}
	
	private int countIter( Iterator it ) {
		int i = 0;
		while( it.hasNext()) {
			Statement s = (Statement) it.next();
			i++;
		}
		return i;
	}

	private int countAll()
	{
		Iterator it = model.listStatements();
		return countIter(it);
	}

	private int countSubj(Resource s)
	{
		Iterator it = model.listStatements(s,(Property)null,(RDFNode)null);
		return countIter(it);
	}

	private int countObj(RDFNode o)
	{
		Iterator it = model.listStatements((Resource)null,(Property)null,o);
		return countIter(it);
	}

	private int countPred(Property o)
	{
		Iterator it = model.listStatements((Resource)null,(Property)o,(RDFNode)null);
		return countIter(it);
	}

	public void testQueryOnlyOption() {
		GraphRDB g = new GraphRDB( conn, null, null, 
				GraphRDB.OPTIMIZE_ALL_REIFICATIONS_AND_HIDE_NOTHING, false);
		model = new ModelRDB(g);

		Statement a1 = crAssertedStmt("s1","p1","o1");
		Statement a2 = crAssertedStmt("s2","p2","s1");
		Resource r1 = crReifiedStmt("r1",a1);
		Resource r2 = crReifiedStmt("r2",a2);
		
		// should find 10 statements total
		int cnt;
		Resource s1 = a1.getSubject();
		Property p1 = a1.getPredicate();
		RDFNode o1 = a1.getObject();
		
		cnt = countAll();
		assertTrue(cnt==10);
		cnt = countSubj(s1);
		assertTrue(cnt==1);
		cnt = countObj(o1);
		assertTrue(cnt==2);
		cnt = countObj(s1);
		assertTrue(cnt==3);
		cnt = countPred(p1);
		assertTrue(cnt==1);
		cnt = countPred(RDF.predicate);
		assertTrue(cnt==2);
		cnt = countSubj(r2);
		assertTrue(cnt==4);
		
		model.setQueryOnlyAsserted(true);
		cnt = countAll();
		assertTrue(cnt==2);
		cnt = countSubj(s1);
		assertTrue(cnt==1);
		cnt = countObj(o1);
		assertTrue(cnt==1);
		cnt = countObj(s1);
		assertTrue(cnt==1);
		cnt = countPred(p1);
		assertTrue(cnt==1);
		cnt = countPred(RDF.predicate);
		assertTrue(cnt==0);
		cnt = countSubj(r2);
		assertTrue(cnt==0);

		model.setQueryOnlyReified(true);
		cnt = countAll();
		assertTrue(cnt==8);
		cnt = countSubj(s1);
		assertTrue(cnt==0);
		cnt = countObj(o1);
		assertTrue(cnt==1);
		cnt = countObj(s1);
		assertTrue(cnt==2);
		cnt = countPred(p1);
		assertTrue(cnt==0);
		cnt = countPred(RDF.predicate);
		assertTrue(cnt==2);
		cnt = countSubj(r2);
		assertTrue(cnt==4);

		model.setQueryOnlyReified(false);
		cnt = countAll();
		assertTrue(cnt==10);
	}

}
    	

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    All rights reserved.

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