Examples with ConstraintDescriptor org.neo4j.internal.schema.ConstraintDescriptor used on opensource projects

Example 71 with ConstraintDescriptor

use of org.neo4j.internal.schema.ConstraintDescriptor in project neo4j by neo4j.

the class AllStoreHolder method constraintGetForName.

ConstraintDescriptor constraintGetForName(StorageSchemaReader reader, String name) {
    ktx.assertOpen();
    ConstraintDescriptor constraint = reader.constraintGetForName(name);
    if (ktx.hasTxStateWithChanges()) {
        Predicate<ConstraintDescriptor> namePredicate = constraintDescriptor -> constraintDescriptor.getName().equals(name);
        Iterator<ConstraintDescriptor> constraints = ktx.txState().constraintsChanges().filterAdded(namePredicate).apply(Iterators.iterator(constraint));
        constraint = singleOrNull(constraints);
    }
    return lockConstraint(constraint);
}

Example 72 with ConstraintDescriptor

use of org.neo4j.internal.schema.ConstraintDescriptor in project neo4j by neo4j.

the class PlainOperationsTest method shouldNotAcquireSchemaReadLockLazilyBeforeGettingAllConstraintsFromSnapshot.

@Test
void shouldNotAcquireSchemaReadLockLazilyBeforeGettingAllConstraintsFromSnapshot() {
    // given
    int labelId = 1;
    int relTypeId = 2;
    UniquenessConstraintDescriptor uniquenessConstraint = uniqueForLabel(labelId, 2, 3, 3);
    RelExistenceConstraintDescriptor existenceConstraint = existsForRelType(relTypeId, 3, 4, 5);
    when(storageReaderSnapshot.constraintsGetAll()).thenReturn(Iterators.iterator(uniquenessConstraint, existenceConstraint));
    // when
    Iterator<ConstraintDescriptor> result = allStoreHolder.snapshot().constraintsGetAll();
    // then
    assertThat(Iterators.count(result)).isEqualTo(2L);
    assertThat(asList(result)).isEmpty();
    verify(storageReaderSnapshot).constraintsGetAll();
    verifyNoMoreInteractions(locks);
}

Example 73 with ConstraintDescriptor

use of org.neo4j.internal.schema.ConstraintDescriptor in project neo4j by neo4j.

the class PlainOperationsTest method shouldAcquireSchemaReadLockLazilyBeforeGettingAllConstraints.

@Test
void shouldAcquireSchemaReadLockLazilyBeforeGettingAllConstraints() {
    // given
    int labelId = 1;
    int relTypeId = 2;
    UniquenessConstraintDescriptor uniquenessConstraint = uniqueForLabel(labelId, 2, 3, 3);
    RelExistenceConstraintDescriptor existenceConstraint = existsForRelType(relTypeId, 3, 4, 5);
    when(storageReader.constraintsGetAll()).thenReturn(Iterators.iterator(uniquenessConstraint, existenceConstraint));
    when(storageReader.constraintExists(uniquenessConstraint)).thenReturn(true);
    when(storageReader.constraintExists(existenceConstraint)).thenReturn(true);
    // when
    Iterator<ConstraintDescriptor> result = allStoreHolder.constraintsGetAll();
    // then
    assertThat(Iterators.count(result)).isEqualTo(2L);
    assertThat(asList(result)).isEmpty();
    order.verify(storageReader).constraintsGetAll();
    order.verify(locks, atLeastOnce()).acquireShared(LockTracer.NONE, ResourceTypes.LABEL, labelId);
    order.verify(locks, atLeastOnce()).acquireShared(LockTracer.NONE, ResourceTypes.RELATIONSHIP_TYPE, relTypeId);
}

Example 74 with ConstraintDescriptor

use of org.neo4j.internal.schema.ConstraintDescriptor in project neo4j by neo4j.

the class KernelSchemaStateFlushingTest method createConstraint.

private ConstraintDescriptor createConstraint() throws KernelException {
    try (KernelTransaction transaction = beginTransaction()) {
        ConstraintDescriptor descriptor = transaction.schemaWrite().uniquePropertyConstraintCreate(IndexPrototype.uniqueForSchema(SchemaDescriptor.forLabel(labelId, propId)));
        transaction.commit();
        return descriptor;
    }
}

Example 75 with ConstraintDescriptor

use of org.neo4j.internal.schema.ConstraintDescriptor in project neo4j by neo4j.

the class RecordStorageReaderSchemaTest method shouldListAllConstraintsAtTimeOfSnapshot.

@Test
void shouldListAllConstraintsAtTimeOfSnapshot() throws Exception {
    // Given
    createUniquenessConstraint(label1, propertyKey);
    // When
    StorageSchemaReader snapshot = storageReader.schemaSnapshot();
    createUniquenessConstraint(label2, propertyKey);
    Set<ConstraintDescriptor> constraints = asSet(snapshot.constraintsGetAll());
    // Then
    Set<ConstraintDescriptor> expectedConstraints = asSet(uniqueConstraintDescriptor(label1, propertyKey));
    assertEquals(expectedConstraints, constraints);
}