Examples of org.openrdf.sail.SailConnection.begin()

org.openrdf.sail.SailConnection.begin()
Begins a transaction requiring {@link #commit()} or {@link #rollback()} tobe called to close the transaction. @throws StoreException If the connection could not start a transaction, or if it already has an active transaction. @see #isAutoCommit()

        URI uriB = sail.getValueFactory().createURI("http://example.org/uriB");
        URI uriC = sail.getValueFactory().createURI("http://example.org/uriC");


        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            sc.removeStatements(null, null, null);


            assertEquals(0L, sc.size());
            sc.addStatement(uriA, uriB, uriC, uriA);
            // sc.commit();

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            URI uriA = sail.getValueFactory().createURI("http://example.org/uriA");
            URI uriB = sail.getValueFactory().createURI("http://example.org/uriB");
            URI uriC = sail.getValueFactory().createURI("http://example.org/uriC");
            SailConnection sc = sail.getConnection();
            try {
                sc.begin();
                sc.clear();
                assertEquals(0, countStatements(sc, uriA, uriB, uriC, false));
                sc.addStatement(uriA, uriB, uriC);
                assertEquals(1, countStatements(sc, uriA, uriB, uriC, false));
                sc.addStatement(uriA, uriB, uriC);

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    public void testBlankNodes() throws Throwable {
        URI uriA = sail.getValueFactory().createURI("http://example.org/test/S_POG#a");
        URI uriB = sail.getValueFactory().createURI("http://example.org/test/S_POG#b");
        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            ValueFactory factory = sail.getValueFactory();
            BNode bNode = factory.createBNode();
            try {
                sc.addStatement(uriA, uriA, bNode);
            } catch (SailException se) {

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        String prefix = "urn:com.tinkerpop.blueprints.pgm.oupls.sail.test/";
        URI thorUri = sail.getValueFactory().createURI(prefix + "thor");


        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            URI uriA = sail.getValueFactory().createURI("http://example.org/uriA");
            URI uriB = sail.getValueFactory().createURI("http://example.org/uriB");
            URI uriC = sail.getValueFactory().createURI("http://example.org/uriC");
            sc.addStatement(uriA, uriB, uriC);
            sc.commit();

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            URI uriA = sail.getValueFactory().createURI("http://example.org/uriA");
            URI uriB = sail.getValueFactory().createURI("http://example.org/uriB");
            URI uriC = sail.getValueFactory().createURI("http://example.org/uriC");
            sc.addStatement(uriA, uriB, uriC);
            sc.commit();
            sc.begin();


            SPARQLParser parser = new SPARQLParser();
            BindingSet bindings = new EmptyBindingSet();
            String baseURI = "http://example.org/bogus/";
            String queryStr;

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            URI uriA = sail.getValueFactory().createURI("http://example.org/uriA");
            URI uriB = sail.getValueFactory().createURI("http://example.org/uriB");
            URI uriC = sail.getValueFactory().createURI("http://example.org/uriC");
            SailConnection sc = sail.getConnection();
            try {
                sc.begin();
                sc.clear();
                sc.commit();
                sc.begin();
                events.clear();
                assertEquals(0, events.size());

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            SailConnection sc = sail.getConnection();
            try {
                sc.begin();
                sc.clear();
                sc.commit();
                sc.begin();
                events.clear();
                assertEquals(0, events.size());
                sc.addStatement(uriA, uriB, uriC, uriA);
                sc.addStatement(uriB, uriC, uriA, uriA);
                // Events are buffered until the commit

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                sc.addStatement(uriA, uriB, uriC, uriA);
                sc.addStatement(uriB, uriC, uriA, uriA);
                // Events are buffered until the commit
                assertEquals(0, events.size());
                sc.commit();
                sc.begin();
                // Only one SailChangedEvent per commit
                assertEquals(1, events.size());
                SailChangedEvent event = events.iterator().next();
                assertTrue(event.statementsAdded());
                assertFalse(event.statementsRemoved());

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                assertFalse(event.statementsRemoved());
                events.clear();
                assertEquals(0, events.size());
                sc.removeStatements(uriA, uriB, uriC, uriA);
                sc.commit();
                sc.begin();
                assertEquals(1, events.size());
                event = events.iterator().next();
                assertFalse(event.statementsAdded());
                assertTrue(event.statementsRemoved());
                events.clear();

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                assertTrue(event.statementsRemoved());
                events.clear();
                assertEquals(0, events.size());
                sc.clear();
                sc.commit();
                sc.begin();
                assertEquals(1, events.size());
                event = events.iterator().next();
                assertFalse(event.statementsAdded());
                assertTrue(event.statementsRemoved());
            } finally {

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