Examples with GraknTx ai.grakn.GraknTx used on opensource projects

Example 71 with GraknTx

use of ai.grakn.GraknTx in project grakn by graknlabs.

the class PhilosophersExampleIT method setUp.

@BeforeClass
public static void setUp() throws IOException {
    GraknTx tx = Grakn.session("in-memory", "mygraph").open(GraknTxType.WRITE);
    qb = tx.graql();
    runQueries("src/examples/philosophers.gql");
}

Example 72 with GraknTx

use of ai.grakn.GraknTx in project grakn by graknlabs.

the class EngineGraknSessionTest method closeGraphWhenOnlyOneTransactionIsOpen.

@Test
public void closeGraphWhenOnlyOneTransactionIsOpen() {
    // Tinker does not have any connections to close
    assumeFalse(GraknTestUtil.usingTinker());
    GraknSession factory = Grakn.session(sparkContext.uri(), SampleKBLoader.randomKeyspace());
    GraknTx graph = factory.open(GraknTxType.WRITE);
    factory.close();
    expectedException.expect(GraknTxOperationException.class);
    expectedException.expectMessage(ErrorMessage.SESSION_CLOSED.getMessage(graph.keyspace()));
    graph.putEntityType("A thingy");
}

Example 73 with GraknTx

use of ai.grakn.GraknTx in project grakn by graknlabs.

the class EngineGraknSessionTest method whenFetchingGraphsOfTheSameKeyspaceFromSessionOrEngineFactory_EnsureGraphsAreTheSame.

@Test
public void whenFetchingGraphsOfTheSameKeyspaceFromSessionOrEngineFactory_EnsureGraphsAreTheSame() {
    String keyspace = "mykeyspace";
    GraknTx graph1 = Grakn.session(sparkContext.uri(), keyspace).open(GraknTxType.WRITE);
    graph1.close();
    GraknTx graph2 = graknFactory.tx(Keyspace.of(keyspace), GraknTxType.WRITE);
    assertEquals(graph1, graph2);
    graph2.close();
}

Example 74 with GraknTx

use of ai.grakn.GraknTx in project grakn by graknlabs.

the class RemoteGraknSessionTest method whenOpeningATransactionFromASession_ReturnATransactionWithParametersSet.

@Test
public void whenOpeningATransactionFromASession_ReturnATransactionWithParametersSet() {
    try (GraknSession session = RemoteGraknSession.create(KEYSPACE, URI, server.channel())) {
        try (GraknTx tx = session.open(GraknTxType.READ)) {
            assertEquals(session, tx.session());
            assertEquals(KEYSPACE, tx.keyspace());
            assertEquals(GraknTxType.READ, tx.txType());
        }
    }
}

Example 75 with GraknTx

use of ai.grakn.GraknTx in project grakn by graknlabs.

the class GraqlController method explainGraql.

@GET
@Path("/kb/{keyspace}/explain")
private String explainGraql(Request request, Response response) throws RetryException, ExecutionException {
    Keyspace keyspace = Keyspace.of(mandatoryPathParameter(request, KEYSPACE_PARAM));
    String queryString = mandatoryQueryParameter(request, QUERY);
    response.status(SC_OK);
    return executeFunctionWithRetrying(() -> {
        try (GraknTx tx = factory.tx(keyspace, GraknTxType.WRITE);
            Timer.Context context = executeExplanation.time()) {
            Answer answer = tx.graql().infer(true).parser().<GetQuery>parseQuery(queryString).execute().stream().findFirst().orElse(new QueryAnswer());
            return mapper.writeValueAsString(ExplanationBuilder.buildExplanation(answer));
        }
    });
}