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

Example 46 with GraknTx

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

the class GraqlTest method testStatisticsMethods.

@Test
public void testStatisticsMethods() throws InvalidKBException {
    try (GraknTx graph = session.open(GraknTxType.WRITE)) {
        Label resourceTypeId = Label.of("my-resource");
        AttributeType<Long> resource = graph.putAttributeType(resourceTypeId, AttributeType.DataType.LONG);
        EntityType thingy = graph.putEntityType("thingy");
        thingy.attribute(resource);
        Entity theResourceOwner = thingy.addEntity();
        Role resourceOwner = graph.getRole(Schema.ImplicitType.HAS_OWNER.getLabel(resourceTypeId).getValue());
        Role resourceValue = graph.getRole(Schema.ImplicitType.HAS_VALUE.getLabel(resourceTypeId).getValue());
        RelationshipType relationshipType = graph.getRelationshipType(Schema.ImplicitType.HAS.getLabel(resourceTypeId).getValue());
        relationshipType.addRelationship().addRolePlayer(resourceOwner, theResourceOwner).addRolePlayer(resourceValue, resource.putAttribute(1L));
        relationshipType.addRelationship().addRolePlayer(resourceOwner, theResourceOwner).addRolePlayer(resourceValue, resource.putAttribute(2L));
        relationshipType.addRelationship().addRolePlayer(resourceOwner, theResourceOwner).addRolePlayer(resourceValue, resource.putAttribute(3L));
        graph.commit();
    }
    try (GraknTx graph = session.open(GraknTxType.WRITE)) {
        // use graql to compute various statistics
        Optional<? extends Number> result = graph.graql().<SumQuery>parse("compute sum of my-resource;").execute();
        assertEquals(Optional.of(6L), result);
        result = graph.graql().<MinQuery>parse("compute min of my-resource;").execute();
        assertEquals(Optional.of(1L), result);
        result = graph.graql().<MaxQuery>parse("compute max of my-resource;").execute();
        assertEquals(Optional.of(3L), result);
        result = graph.graql().<MeanQuery>parse("compute mean of my-resource;").execute();
        assert result.isPresent();
        assertEquals(2.0, (Double) result.get(), 0.1);
        result = graph.graql().<MedianQuery>parse("compute median of my-resource;").execute();
        assertEquals(Optional.of(2L), result);
    }
}

Example 47 with GraknTx

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

the class GraqlTest method testAnalyticsDoesNotCommitByMistake.

@Test
public void testAnalyticsDoesNotCommitByMistake() throws InvalidKBException {
    try (GraknTx graph = session.open(GraknTxType.WRITE)) {
        graph.putAttributeType("number", AttributeType.DataType.LONG);
        graph.commit();
    }
    Set<String> analyticsCommands = new HashSet<>(Arrays.asList("compute count;", "compute degrees;", "compute mean of number;"));
    analyticsCommands.forEach(command -> {
        try (GraknTx graph = session.open(GraknTxType.WRITE)) {
            // insert a node but do not commit it
            graph.graql().parse("define thingy sub entity;").execute();
            // use analytics
            graph.graql().parse(command).execute();
        }
        try (GraknTx graph = session.open(GraknTxType.WRITE)) {
            // see if the node was commited
            assertNull(graph.getEntityType("thingy"));
        }
    });
}

Example 48 with GraknTx

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

the class AnalyticsTest method testSubgraphContainingRoleDoesNotBreakAnalytics.

@Test
public void testSubgraphContainingRoleDoesNotBreakAnalytics() {
    expectedEx.expect(GraqlQueryException.class);
    expectedEx.expectMessage(GraqlQueryException.labelNotFound(Label.of("role")).getMessage());
    try (GraknTx graph = session.open(GraknTxType.READ)) {
        graph.graql().compute().count().in("role").execute();
    }
}

Example 49 with GraknTx

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

the class AnalyticsTest method addSchemaAndEntities.

private void addSchemaAndEntities() throws InvalidKBException {
    try (GraknTx graph = session.open(GraknTxType.WRITE)) {
        EntityType entityType1 = graph.putEntityType(thingy);
        EntityType entityType2 = graph.putEntityType(anotherThing);
        Entity entity1 = entityType1.addEntity();
        Entity entity2 = entityType1.addEntity();
        Entity entity3 = entityType1.addEntity();
        Entity entity4 = entityType2.addEntity();
        entityId1 = entity1.getId().getValue();
        entityId2 = entity2.getId().getValue();
        entityId3 = entity3.getId().getValue();
        entityId4 = entity4.getId().getValue();
        Role role1 = graph.putRole("role1");
        Role role2 = graph.putRole("role2");
        entityType1.plays(role1).plays(role2);
        entityType2.plays(role1).plays(role2);
        RelationshipType relationshipType = graph.putRelationshipType(related).relates(role1).relates(role2);
        relationId12 = relationshipType.addRelationship().addRolePlayer(role1, entity1).addRolePlayer(role2, entity2).getId().getValue();
        relationId24 = relationshipType.addRelationship().addRolePlayer(role1, entity2).addRolePlayer(role2, entity4).getId().getValue();
        graph.commit();
    }
}

Example 50 with GraknTx

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

the class AnalyticsTest method testNullResourceDoesNotBreakAnalytics.

@Test
public void testNullResourceDoesNotBreakAnalytics() throws InvalidKBException {
    try (GraknTx graph = session.open(GraknTxType.WRITE)) {
        // make slightly odd graph
        Label resourceTypeId = Label.of("degree");
        EntityType thingy = graph.putEntityType("thingy");
        AttributeType<Long> attribute = graph.putAttributeType(resourceTypeId, AttributeType.DataType.LONG);
        thingy.attribute(attribute);
        Role degreeOwner = graph.getRole(Schema.ImplicitType.HAS_OWNER.getLabel(resourceTypeId).getValue());
        Role degreeValue = graph.getRole(Schema.ImplicitType.HAS_VALUE.getLabel(resourceTypeId).getValue());
        RelationshipType relationshipType = graph.putRelationshipType(Schema.ImplicitType.HAS.getLabel(resourceTypeId)).relates(degreeOwner).relates(degreeValue);
        thingy.plays(degreeOwner);
        Entity thisThing = thingy.addEntity();
        relationshipType.addRelationship().addRolePlayer(degreeOwner, thisThing);
        graph.commit();
    }
    // the null role-player caused analytics to fail at some stage
    try (GraknTx graph = session.open(GraknTxType.READ)) {
        graph.graql().compute().centrality().usingDegree().execute();
    } catch (RuntimeException e) {
        e.printStackTrace();
        fail();
    }
}