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

Example 11 with GraknSession

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

the class GraknTxTest method whenOpeningDifferentTypesOfGraphsOnTheSameThread_Throw.

@Test
public void whenOpeningDifferentTypesOfGraphsOnTheSameThread_Throw() {
    String keyspace = "akeyspacewithkeys";
    GraknSession session = Grakn.session(Grakn.IN_MEMORY, keyspace);
    GraknTx graph = session.open(GraknTxType.READ);
    failAtOpeningTx(session, GraknTxType.WRITE, keyspace);
    failAtOpeningTx(session, GraknTxType.BATCH, keyspace);
    graph.close();
    // noinspection ResultOfMethodCallIgnored
    session.open(GraknTxType.BATCH);
    failAtOpeningTx(session, GraknTxType.WRITE, keyspace);
    failAtOpeningTx(session, GraknTxType.READ, keyspace);
}

Example 12 with GraknSession

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

the class AttributeTypeTest method whenCreatingAResourceTypeOfTypeDate_EnsureTheTimeZoneIsSetTOADefaultAndDoesNotAffectRetreival.

@Test
public void whenCreatingAResourceTypeOfTypeDate_EnsureTheTimeZoneIsSetTOADefaultAndDoesNotAffectRetreival() {
    // offset the time to GMT-8
    TimeZone.setDefault(TimeZone.getTimeZone("GMT-8"));
    // get the local time (without timezone)
    LocalDateTime rightNow = LocalDateTime.now();
    // now add the timezone to the graph
    try (GraknSession session = Grakn.session(Grakn.IN_MEMORY, "somethingmorerandom")) {
        try (GraknTx graph = session.open(GraknTxType.WRITE)) {
            AttributeType<LocalDateTime> aTime = graph.putAttributeType("aTime", AttributeType.DataType.DATE);
            aTime.putAttribute(rightNow);
            graph.commit();
        }
    }
    // offset the time to GMT where the colleague is working
    TimeZone.setDefault(TimeZone.getTimeZone("GMT"));
    // the colleague extracts the LocalTime which should be the same
    try (GraknSession session = Grakn.session(Grakn.IN_MEMORY, "somethingmorerandom")) {
        try (GraknTx graph = session.open(GraknTxType.WRITE)) {
            AttributeType aTime = graph.getAttributeType("aTime");
            LocalDateTime databaseTime = (LocalDateTime) ((Attribute) aTime.instances().iterator().next()).getValue();
            // localTime should not have changed as it should not be sensitive to timezone
            assertEquals(rightNow, databaseTime);
        }
    }
}

Example 13 with GraknSession

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

the class GraknTxs method generate.

@Override
public GraknTx generate() {
    // TODO: Generate more keyspaces
    // We don't do this now because creating lots of keyspaces seems to slow the system tx
    String keyspace = gen().make(MetasyntacticStrings.class).generate(random, status);
    GraknSession factory = Grakn.session(Grakn.IN_MEMORY, keyspace);
    int size = status.size();
    startSummary();
    txSummary.append("size: ").append(size).append("\n");
    closeGraph(lastGeneratedGraph);
    // Clear tx before retrieving
    tx = factory.open(GraknTxType.WRITE);
    tx.admin().delete();
    tx = factory.open(GraknTxType.WRITE);
    for (int i = 0; i < size; i++) {
        mutateOnce();
    }
    // Close graphs randomly, unless parameter is set
    boolean shouldOpen = open != null ? open : random.nextBoolean();
    if (!shouldOpen)
        tx.close();
    setLastGeneratedGraph(tx);
    return tx;
}