Examples of SailConnection

org.openrdf.sail.SailConnection
A connection to an RDF Sail object. A SailConnection is active from the moment it is created until it is closed. Care should be taken to properly close SailConnections as they might block concurrent queries and/or updates on the Sail while active, depending on the Sail-implementation that is being used. @author jeen @author Arjohn Kampman

Examples of org.openrdf.sail.SailConnection

        }
    }


    @Test
    public void testGetStatementsO_SPG() throws Exception {
        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            URI uriA = sail.getValueFactory().createURI("http://example.org/test/O_SPG#a");
            URI uriB = sail.getValueFactory().createURI("http://example.org/test/O_SPG#b");
            URI uriC = sail.getValueFactory().createURI("http://example.org/test/O_SPG#c");
            Literal plainLitA = sail.getValueFactory().createLiteral("arbitrary plain literal 9548734867");
            Literal stringLitA = sail.getValueFactory().createLiteral("arbitrary string literal 8765", XMLSchema.STRING);
            int before, after;


            // Add statement to a specific context.
            sc.removeStatements(null, null, uriA, uriA);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, null, uriA, false);
            sc.addStatement(uriB, uriC, uriA);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, null, uriA, false);
            assertEquals(0, before);
            assertEquals(1, after);


            // Add plain literal statement to the default context.
            sc.removeStatements(null, null, plainLitA);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, null, plainLitA, false);
            sc.addStatement(uriA, uriA, plainLitA);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, null, plainLitA, false);
            assertEquals(0, before);
            assertEquals(1, after);


            // Add string-typed literal statement to the default context.
            sc.removeStatements(null, null, plainLitA);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, null, stringLitA, false);
            sc.addStatement(uriA, uriA, stringLitA);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, null, stringLitA, false);
            assertEquals(0, before);
            assertEquals(1, after);
        } finally {
            sc.rollback();
            sc.close();
        }
    }

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Examples of org.openrdf.sail.SailConnection

        }
    }


    @Test
    public void testGetStatementsPO_SG() throws Exception {
        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            URI uriA = sail.getValueFactory().createURI("http://example.org/test/PO_SG#a");
            URI uriB = sail.getValueFactory().createURI("http://example.org/test/PO_SG#b");
            URI foo = sail.getValueFactory().createURI("http://example.org/ns#foo");
            URI firstName = sail.getValueFactory().createURI("http://example.org/ns#firstName");
            Literal plainLitA = sail.getValueFactory().createLiteral("arbitrary plain literal 8765675");
            Literal fooLabel = sail.getValueFactory().createLiteral("foo", XMLSchema.STRING);
            int before, after;


            // Add statement to the implicit null context.
            sc.removeStatements(null, null, null, uriA);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, uriA, uriB, false);
            sc.addStatement(uriA, uriA, uriB);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, uriA, uriB, false);
            assertEquals(0, before);
            assertEquals(1, after);


            // Add plain literal statement to the default context.
            sc.removeStatements(null, null, plainLitA);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, uriA, plainLitA, false);
            sc.addStatement(uriA, uriA, plainLitA);
            sc.addStatement(uriA, uriB, plainLitA);
            sc.addStatement(uriB, uriB, plainLitA);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, uriA, plainLitA, false);
            assertEquals(0, before);
            assertEquals(1, after);


            // Add string-typed literal statement to the default context.
            sc.removeStatements(null, null, fooLabel);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, firstName, fooLabel, false);
            sc.addStatement(foo, firstName, fooLabel);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, firstName, fooLabel, false);
            assertEquals(0, before);
            assertEquals(1, after);
            assertEquals(foo, toSet(sc.getStatements(null, firstName, fooLabel, false)).iterator().next().getSubject());


        } finally {
            sc.rollback();
            sc.close();
        }
    }

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Examples of org.openrdf.sail.SailConnection

        }
    }


    @Test
    public void testGetStatementsSPO_G() throws Exception {
        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            URI uriA = sail.getValueFactory().createURI("http://example.org/test/S_POG#a");
            URI uriB = sail.getValueFactory().createURI("http://example.org/test/S_POG#b");
            URI uriC = sail.getValueFactory().createURI("http://example.org/test/S_POG#c");
            URI uriD = sail.getValueFactory().createURI("http://example.org/test/S_POG#d");
            int before, after;


            // default context, different S,P,O
            sc.removeStatements(uriA, null, null);
            sc.commit();
            sc.begin();
            before = countStatements(sc, uriA, uriB, uriC, false);
            sc.addStatement(uriA, uriB, uriC);
            sc.commit();
            sc.begin();
            after = countStatements(sc, uriA, uriB, uriC, false);
            assertEquals(0, before);
            assertEquals(1, after);


            // default context, same S,P,O
            sc.removeStatements(uriA, null, null);
            sc.commit();
            sc.begin();
            before = countStatements(sc, uriA, uriB, uriC, false);
            sc.addStatement(uriA, uriB, uriC);
            sc.commit();
            sc.begin();
            after = countStatements(sc, uriA, uriB, uriC, false);
            assertEquals(0, before);
            assertEquals(1, after);


            // one specific context, different S,P,O
            sc.removeStatements(uriA, null, null, uriD);
            sc.commit();
            sc.begin();
            before = countStatements(sc, uriA, uriB, uriC, false, uriD);
            sc.addStatement(uriA, uriB, uriC, uriD);
            sc.commit();
            sc.begin();
            after = countStatements(sc, uriA, uriB, uriC, false, uriD);
            assertEquals(0, before);
            assertEquals(1, after);


            // one specific context, same S,P,O,G
            sc.removeStatements(uriA, null, null, uriA);
            sc.commit();
            sc.begin();
            before = countStatements(sc, uriA, uriB, uriC, false, uriA);
            sc.addStatement(uriA, uriB, uriC, uriA);
            sc.commit();
            sc.begin();
            after = countStatements(sc, uriA, uriB, uriC, false, uriA);
            assertEquals(0, before);
            assertEquals(1, after);
        } finally {
            sc.rollback();
            sc.close();
        }
    }

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Examples of org.openrdf.sail.SailConnection

        URI ref = new URIImpl(ex + "Ref");


        clear();
        int edgesBefore, verticesBefore;


        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            edgesBefore = countEdges();
            verticesBefore = countVertices();
        } finally {
            sc.commit();
            sc.close();
        }


        addFile(SailTest.class.getResourceAsStream("graph-example-bnodes.trig"), RDFFormat.TRIG);


        sc = sail.getConnection();
        //showStatements(sc, null, null, null);
        try {
            sc.begin();
            assertEquals(14, countStatements(sc, null, null, null, false));
            assertEquals(edgesBefore + 14, countEdges());
            assertEquals(verticesBefore + 10, countVertices());


            sc.removeStatements(ref, null, null);
            sc.commit();
            sc.begin();


            assertEquals(13, countStatements(sc, null, null, null, false));
            assertEquals(edgesBefore + 13, countEdges());
            assertEquals(verticesBefore + 9, countVertices());


            sc.clear();
            sc.commit();
            sc.begin();


            assertEquals(0, countStatements(sc, null, null, null, false));
            assertEquals(0, countEdges());
            // Namespaces vertex is still present.
            assertEquals(verticesBefore, countVertices());
        } finally {
            sc.rollback();
            sc.close();
        }
    }

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Examples of org.openrdf.sail.SailConnection

        URI class1 = new URIImpl(ex + "Class1");


        clear();
        int edgesBefore, verticesBefore;


        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            edgesBefore = countEdges();
            verticesBefore = countVertices();
        } finally {
            sc.rollback();
            sc.close();
        }


        // Load a file once.
        addFile(SailTest.class.getResourceAsStream("graph-example-bnodes.trig"), RDFFormat.TRIG);


        sc = sail.getConnection();
        try {
            assertEquals(3, countStatements(sc, class1, RDFS.SUBCLASSOF, null, false));
            assertEquals(edgesBefore + 14, countEdges());
            assertEquals(verticesBefore + 10, countVertices());
        } finally {
            sc.rollback();
            sc.close();
        }


        // Load the file again.
        // Loading the same file twice results in extra vertices and edges,
        // since blank nodes assume different identities on each load.
        addFile(SailTest.class.getResourceAsStream("graph-example-bnodes.trig"), RDFFormat.TRIG);


        sc = sail.getConnection();
        try {
            assertEquals(5, countStatements(sc, class1, RDFS.SUBCLASSOF, null, false));
            assertEquals(edgesBefore + 23, countEdges());
            assertEquals(verticesBefore + 12, countVertices());
        } finally {
            sc.rollback();
            sc.close();
        }
    }

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Examples of org.openrdf.sail.SailConnection

        }
    }


    @Test
    public void testGetStatementsP_SOG() throws Exception {
        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            URI uriA = sail.getValueFactory().createURI("http://example.org/test/P_SOG#a");
            URI uriB = sail.getValueFactory().createURI("http://example.org/test/P_SOG#b");
            URI uriC = sail.getValueFactory().createURI("http://example.org/test/P_SOG#c");
            URI foo = sail.getValueFactory().createURI("http://example.org/ns#foo");
            URI firstName = sail.getValueFactory().createURI("http://example.org/ns#firstName");
            Literal plainLitA = sail.getValueFactory().createLiteral("arbitrary plain literal 238445");
            Literal fooLabel = sail.getValueFactory().createLiteral("foo", XMLSchema.STRING);
            int before, after;


            // Add statement to the implicit null context.
            sc.removeStatements(null, uriA, null);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, uriA, null, false);
            sc.addStatement(uriB, uriA, uriC);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, uriA, null, false);
            assertEquals(0, before);
            assertEquals(1, after);


            // Add plain literal statement to the default context.
            sc.removeStatements(null, uriA, null);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, uriA, null, false);
            sc.addStatement(uriA, uriA, plainLitA);
            sc.addStatement(uriA, uriB, plainLitA);
            sc.addStatement(uriB, uriB, plainLitA);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, uriA, null, false);
            assertEquals(0, before);
            assertEquals(1, after);


            // Add string-typed literal statement to the default context.
            sc.removeStatements(null, firstName, null);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, firstName, null, false);
            sc.addStatement(foo, firstName, fooLabel);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, firstName, null, false);
            assertEquals(0, before);
            assertEquals(1, after);
            assertEquals(foo, toSet(sc.getStatements(null, firstName, null, false)).iterator().next().getSubject());


            // Add statement to a non-null context.
            sc.removeStatements(null, uriA, null);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, uriA, null, false);
            sc.addStatement(uriB, uriA, uriC, uriA);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, uriA, null, false);
            assertEquals(0, before);
            assertEquals(1, after);


            sc.removeStatements(null, uriA, null);
            sc.commit();
            sc.begin();
            before = countStatements(sc, null, uriA, null, false);
            sc.addStatement(uriB, uriA, uriC, uriC);
            sc.addStatement(uriC, uriA, uriA, uriA);
            sc.commit();
            sc.begin();
            sc.addStatement(uriA, uriA, uriB, uriB);
            sc.commit();
            sc.begin();
            after = countStatements(sc, null, uriA, null, false);
            assertEquals(0, before);
            assertEquals(3, after);


        } finally {
            sc.rollback();
            sc.close();
        }
    }

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Examples of org.openrdf.sail.SailConnection

        }
    }


    @Test
    public void testGetStatementsWithVariableContexts() throws Exception {
        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");
            int count;
            sc.clear();
            //sc.removeStatements(uriA, uriA, uriA);
            sc.commit();
            sc.begin();
            Resource[] contexts = {uriA, null};
            sc.addStatement(uriA, uriB, uriC, contexts);
            sc.commit();
            sc.begin();


            // Get statements from all contexts.
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(2, count);


            // Get statements from a specific partition context.
            count = countStatements(sc, null, null, null, false, uriA);
            assertEquals(1, count);


            // Get statements from the null context.
            Resource[] c = {null};
            count = countStatements(sc, null, null, null, false, c);
            //assertTrue(count > 0);
            assertEquals(1, count);
            int countLast = count;


            // Get statements from more than one context.
            count = countStatements(sc, null, null, null, false, contexts);
            assertEquals(1 + countLast, count);


        } finally {
            sc.rollback();
            sc.close();
        }
    }

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Examples of org.openrdf.sail.SailConnection

        }
    }


    @Test
    public void testRemoveStatements() throws Exception {
        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");
            Resource[] contexts = {uriA, null};
            int count;


            // Remove from all contexts.
            sc.removeStatements(uriA, null, null);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(0, count);
            sc.addStatement(uriA, uriB, uriC, contexts);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(2, count);
            sc.removeStatements(uriA, null, null);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(0, count);


            // Remove from one partition context.
            sc.removeStatements(uriA, null, null);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(0, count);
            sc.addStatement(uriA, uriB, uriC, contexts);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(2, count);
            Resource[] oneContext = {uriA};
            sc.removeStatements(uriA, null, null, oneContext);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(1, count);


            // Remove from the null context.
            sc.removeStatements(uriA, null, null);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(0, count);
            sc.addStatement(uriA, uriB, uriC, contexts);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(2, count);
            Resource[] nullContext = {null};
            sc.removeStatements(uriA, null, null, nullContext);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(1, count);


            // Remove from more than one context.
            sc.removeStatements(uriA, null, null);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(0, count);
            sc.addStatement(uriA, uriB, uriC, contexts);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false);
            assertEquals(2, count);
            sc.removeStatements(uriA, null, null);
            sc.commit();
            sc.begin();
            count = countStatements(sc, uriA, null, null, false, contexts);
            assertEquals(0, count);


        } finally {
            sc.rollback();
            sc.close();
        }
    }

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Examples of org.openrdf.sail.SailConnection

    public void testClear() throws Exception {
        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(0L, sc.size());
            sc.addStatement(uriA, uriB, uriC, uriA);
            sc.addStatement(uriC, uriA, uriB, uriA);
            sc.addStatement(uriB, uriC, uriA, uriA);
            assertEquals(3L, sc.size(uriA));
            sc.addStatement(uriA, uriB, uriC, uriB);
            sc.addStatement(uriB, uriC, uriA, uriB);
            assertEquals(2L, sc.size(uriB));
            sc.addStatement(uriA, uriB, uriC);
            assertEquals(1L, sc.size((Resource) null));
            sc.addStatement(uriA, uriB, uriC, uriC);
            sc.addStatement(uriB, uriC, uriA, uriC);
            sc.addStatement(uriC, uriA, uriB, uriC);
            sc.addStatement(uriA, uriB, uriB, uriC);
            assertEquals(4L, sc.size(uriC));
            assertEquals(10L, sc.size());
            sc.clear(uriA, uriC);
            assertEquals(1L, sc.size((Resource) null));
            assertEquals(0L, sc.size(uriA));
            assertEquals(2L, sc.size(uriB));
            assertEquals(0L, sc.size(uriC));
            assertEquals(3L, sc.size());
            sc.clear();
            assertEquals(0L, sc.size());
            sc.commit();
        } finally {
            sc.rollback();
            sc.close();
        }
    }

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Examples of org.openrdf.sail.SailConnection

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


        SailConnection sc = sail.getConnection();
        try {
            sc.begin();
            sc.clear();


            sc.addStatement(uriA, uriB, uriC);
            assertEquals(1, countStatements(sc, null, null, null, false));
            assertEquals(0, count(sc.getContextIDs()));


            sc.addStatement(uriC, uriB, uriA, uriC);
            assertEquals(2, countStatements(sc, null, null, null, false));
            assertEquals(1, count(sc.getContextIDs()));
            assertEquals(uriC, sc.getContextIDs().next());


            sc.addStatement(uriD, uriB, uriA, uriC);
            assertEquals(3, countStatements(sc, null, null, null, false));
            assertEquals(1, count(sc.getContextIDs()));
        } finally {
            sc.rollback();
            sc.close();
        }
    }

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