@Test
public void shouldGetConstraintsByLabel() throws Exception {
// given
UniquenessConstraint constraint1 = new UniquenessConstraint(11, 66);
UniquenessConstraint constraint2 = new UniquenessConstraint(11, 99);
TxState txState =
new TxStateImpl(
mock(OldTxStateBridge.class), mock(PersistenceManager.class), mock(IdGeneration.class));
KernelStatement state = mockedState(txState);
when(inner.constraintsGetForLabelAndPropertyKey(10, 66))
.thenAnswer(asAnswer(Collections.emptyList()));
when(inner.constraintsGetForLabelAndPropertyKey(11, 99))
.thenAnswer(asAnswer(Collections.emptyList()));
when(inner.constraintsGetForLabel(10)).thenAnswer(asAnswer(Collections.emptyList()));
when(inner.constraintsGetForLabel(11)).thenAnswer(asAnswer(asIterable(constraint1)));
StateHandlingStatementOperations context = newTxStateOps(inner);
context.uniquenessConstraintCreate(state, 10, 66);
context.uniquenessConstraintCreate(state, 11, 99);
// when
Set<UniquenessConstraint> result = asSet(asIterable(context.constraintsGetForLabel(state, 11)));
// then
assertEquals(asSet(constraint1, constraint2), result);
}
@Override
public Iterator<UniquenessConstraint> constraintsGetForLabelAndPropertyKey(
KernelStatement state, int labelId, int propertyKeyId) {
return applyConstraintsDiff(
state,
storeLayer.constraintsGetForLabelAndPropertyKey(labelId, propertyKeyId),
labelId,
propertyKeyId);
}
@Test
public void shouldNotAddConstraintAlreadyExistsInTheStore() throws Exception {
// given
UniquenessConstraint constraint = new UniquenessConstraint(10, 66);
TxState txState = mock(TxState.class);
when(txState.nodesWithLabelChanged(anyInt())).thenReturn(DiffSets.<Long>emptyDiffSets());
KernelStatement state = mockedState(txState);
when(inner.constraintsGetForLabelAndPropertyKey(10, 66))
.thenAnswer(asAnswer(asList(constraint)));
StateHandlingStatementOperations context = newTxStateOps(inner);
// when
context.uniquenessConstraintCreate(state, 10, 66);
// then
verify(txState).constraintIndexDoUnRemove(any(IndexDescriptor.class));
}
@Override
public UniquenessConstraint uniquenessConstraintCreate(
KernelStatement state, int labelId, int propertyKeyId)
throws CreateConstraintFailureException {
UniquenessConstraint constraint = new UniquenessConstraint(labelId, propertyKeyId);
try {
IndexDescriptor index = new IndexDescriptor(labelId, propertyKeyId);
if (state.txState().constraintIndexDoUnRemove(index)) // ..., DROP, *CREATE*
{ // creation is undoing a drop
state.txState().constraintIndexDiffSetsByLabel(labelId).unRemove(index);
if (!state.txState().constraintDoUnRemove(constraint)) // CREATE, ..., DROP, *CREATE*
{ // ... the drop we are undoing did itself undo a prior create...
state.txState().constraintsChangesForLabel(labelId).unRemove(constraint);
state
.txState()
.constraintDoAdd(constraint, state.txState().indexCreatedForConstraint(constraint));
}
} else // *CREATE*
{ // create from scratch
for (Iterator<UniquenessConstraint> it =
storeLayer.constraintsGetForLabelAndPropertyKey(labelId, propertyKeyId);
it.hasNext(); ) {
if (it.next().equals(labelId, propertyKeyId)) {
return constraint;
}
}
long indexId =
constraintIndexCreator.createUniquenessConstraintIndex(
state, this, labelId, propertyKeyId);
state.txState().constraintDoAdd(constraint, indexId);
}
return constraint;
} catch (ConstraintVerificationFailedKernelException
| DropIndexFailureException
| TransactionFailureException e) {
throw new CreateConstraintFailureException(constraint, e);
}
}