Examples with UniquenessConstraintDescriptor org.neo4j.internal.schema.constraints.UniquenessConstraintDescriptor used on opensource projects

Example 16 with UniquenessConstraintDescriptor

use of org.neo4j.internal.schema.constraints.UniquenessConstraintDescriptor 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 17 with UniquenessConstraintDescriptor

use of org.neo4j.internal.schema.constraints.UniquenessConstraintDescriptor 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 18 with UniquenessConstraintDescriptor

use of org.neo4j.internal.schema.constraints.UniquenessConstraintDescriptor in project neo4j by neo4j.

the class PlainOperationsTest method shouldAcquireSchemaNameWriteLockBeforeDroppingConstraintByName.

@Test
void shouldAcquireSchemaNameWriteLockBeforeDroppingConstraintByName() throws Exception {
    // given
    UniquenessConstraintDescriptor constraint = uniqueForSchema(schema).withName("constraint");
    IndexDescriptor index = IndexPrototype.uniqueForSchema(schema).withName("constraint").materialise(13);
    storageReaderWithConstraints(constraint);
    when(storageReader.indexExists(index)).thenReturn(true);
    when(storageReader.indexGetForName("constraint")).thenReturn(index);
    when(storageReader.constraintGetForName("constraint")).thenReturn(constraint);
    // when
    operations.constraintDrop("constraint");
    // then
    long nameLock = ResourceIds.schemaNameResourceId("constraint");
    order.verify(locks).acquireExclusive(LockTracer.NONE, ResourceTypes.SCHEMA_NAME, nameLock);
    order.verify(txState).constraintDoDrop(constraint);
    order.verify(txState).indexDoDrop(index);
}

Example 19 with UniquenessConstraintDescriptor

use of org.neo4j.internal.schema.constraints.UniquenessConstraintDescriptor in project neo4j by neo4j.

the class PlainOperationsTest method shouldReleaseAcquiredSchemaWriteLockIfConstraintCreationFails.

@Test
void shouldReleaseAcquiredSchemaWriteLockIfConstraintCreationFails() throws Exception {
    // given
    UniquenessConstraintDescriptor constraint = uniqueForSchema(schema);
    storageReaderWithConstraints(constraint);
    int labelId = schema.getLabelId();
    int propertyId = schema.getPropertyId();
    when(tokenHolders.labelTokens().getTokenById(labelId)).thenReturn(new NamedToken("Label", labelId));
    when(tokenHolders.propertyKeyTokens().getTokenById(propertyId)).thenReturn(new NamedToken("prop", labelId));
    // when
    try {
        operations.uniquePropertyConstraintCreate(IndexPrototype.uniqueForSchema(schema).withName("constraint name"));
        fail("Expected an exception because this schema should already be constrained.");
    } catch (AlreadyConstrainedException ignore) {
    // Good.
    }
    // then
    order.verify(locks).acquireExclusive(LockTracer.NONE, ResourceTypes.LABEL, labelId);
    order.verify(storageReader).constraintsGetForSchema(schema);
    order.verify(locks).releaseExclusive(ResourceTypes.LABEL, labelId);
}

Example 20 with UniquenessConstraintDescriptor

use of org.neo4j.internal.schema.constraints.UniquenessConstraintDescriptor in project neo4j by neo4j.

the class SchemaStorageIT method makeIndexRuleForConstraint.

private IndexDescriptor makeIndexRuleForConstraint(long ruleId, String label, String propertyKey, long constraintId) {
    LabelSchemaDescriptor schema = forLabel(labelId(label), propId(propertyKey));
    IndexPrototype prototype = uniqueForSchema(schema, GenericNativeIndexProvider.DESCRIPTOR);
    UniquenessConstraintDescriptor constraint = ConstraintDescriptorFactory.uniqueForSchema(schema);
    prototype = prototype.withName(SchemaRule.generateName(constraint, new String[] { label }, new String[] { propertyKey }));
    return prototype.materialise(ruleId).withOwningConstraintId(constraintId);
}