Examples with RDFConnection org.apache.jena.rdfconnection.RDFConnection used on opensource projects

Example 11 with RDFConnection

use of org.apache.jena.rdfconnection.RDFConnection in project jena by apache.

the class AbstractTestRDFConnection method named_graph_put_2_different.

@Test
public void named_graph_put_2_different() {
    try (RDFConnection conn = connection()) {
        conn.put(graphName, model1);
        conn.put(graphName2, model2);
        Model m1 = conn.fetch(graphName);
        Model m2 = conn.fetch(graphName2);
        assertTrue("Models not isomorphic", isomorphic(m1, model1));
        assertTrue("Models not isomorphic", isomorphic(m2, model2));
    }
}

Example 12 with RDFConnection

use of org.apache.jena.rdfconnection.RDFConnection in project jena by apache.

the class AbstractTestRDFConnection method transaction_abort_read02.

// Not all RDFConnections support abort.
@Test
public void transaction_abort_read02() {
    Assume.assumeTrue(supportsAbort());
    String testDataFile = DIR + "data.trig";
    try (RDFConnection conn = connection()) {
        conn.begin(ReadWrite.WRITE);
        conn.loadDataset(testDataFile);
        conn.abort();
        conn.end();
        conn.begin(ReadWrite.READ);
        Model m = conn.fetch();
        assertTrue(m.isEmpty());
        conn.end();
    }
}

Example 13 with RDFConnection

use of org.apache.jena.rdfconnection.RDFConnection in project jena by apache.

the class AbstractTestRDFConnection method connect_01.

// ---- Data
@Test
public void connect_01() {
    @SuppressWarnings("resource") RDFConnection conn = connection();
    assertFalse(conn.isClosed());
    conn.close();
    assertTrue(conn.isClosed());
    // Allow multiple close()
    conn.close();
}

Example 14 with RDFConnection

use of org.apache.jena.rdfconnection.RDFConnection in project jena by apache.

the class AbstractTestRDFConnection method transaction_bad_01.

//@Test(expected=JenaTransactionException.class)
public void transaction_bad_01() {
    try (RDFConnection conn = connection()) {
        conn.begin(ReadWrite.WRITE);
        // Should have conn.commit();
        conn.end();
    }
}

Example 15 with RDFConnection

use of org.apache.jena.rdfconnection.RDFConnection in project jena by apache.

the class RDFConnectionExample1 method main.

public static void main(String... args) {
    Query query = QueryFactory.create("SELECT * { {?s ?p ?o } UNION { GRAPH ?g { ?s ?p ?o } } }");
    Dataset dataset = DatasetFactory.createTxnMem();
    RDFConnection conn = RDFConnectionFactory.connect(dataset);
    Txn.executeWrite(conn, () -> {
        System.out.println("Load a file");
        conn.load("data.ttl");
        conn.load("http://example/g0", "data.ttl");
        System.out.println("In write transaction");
        conn.queryResultSet(query, ResultSetFormatter::out);
    });
    // And again - implicit READ transaction.
    System.out.println("After write transaction");
    conn.queryResultSet(query, ResultSetFormatter::out);
}