private void createConstraintRule(UniquenessConstraint constraint) {
// TODO: Do not create duplicate index
SchemaStore schemaStore = getSchemaStore();
long indexRuleId = schemaStore.nextId();
long constraintRuleId = schemaStore.nextId();
IndexRule indexRule =
IndexRule.constraintIndexRule(
indexRuleId,
constraint.label(),
constraint.propertyKeyId(),
this.schemaIndexProviders.getDefaultProvider().getProviderDescriptor(),
constraintRuleId);
UniquenessConstraintRule constraintRule =
UniquenessConstraintRule.uniquenessConstraintRule(
constraintRuleId, constraint.label(), constraint.propertyKeyId(), indexRuleId);
for (DynamicRecord record : schemaStore.allocateFrom(constraintRule)) {
schemaStore.updateRecord(record);
}
schemaCache.addSchemaRule(constraintRule);
for (DynamicRecord record : schemaStore.allocateFrom(indexRule)) {
schemaStore.updateRecord(record);
}
schemaCache.addSchemaRule(indexRule);
labelsTouched = true;
recordAccess.commit();
}
private void showUniqueConstraints(
DbStructureVisitor visitor, ReadOperations read, TokenNameLookup nameLookup) {
Iterator<UniquenessConstraint> constraints = read.constraintsGetAll();
while (constraints.hasNext()) {
UniquenessConstraint constraint = constraints.next();
String userDescription = constraint.userDescription(nameLookup);
visitor.visitUniqueConstraint(constraint, userDescription);
}
}
@Override
public boolean constraintDoUnRemove(UniquenessConstraint constraint) {
// hasChanges should already be set correctly when this is called
if (constraintsChanges().unRemove(constraint)) {
constraintIndexChanges.unRemove(
new IndexDescriptor(constraint.label(), constraint.propertyKeyId()));
return true;
}
return false;
}
@Override
public String getUserMessage(TokenNameLookup tokenNameLookup) {
StringBuilder message = new StringBuilder();
for (Evidence evidenceItem : evidence()) {
IndexEntryConflictException conflict = evidenceItem.conflict;
message.append(
conflict.evidenceMessage(
tokenNameLookup.labelGetName(constraint.label()),
tokenNameLookup.propertyKeyGetName(constraint.propertyKeyId())));
}
return message.toString();
}
@Override
public void constraintDoDrop(UniquenessConstraint constraint) {
if (constraintsChanges().remove(constraint)) {
createdConstraintIndexesByConstraint().remove(constraint);
// TODO: someone needs to make sure that the index we created gets dropped.
// I think this can wait until commit/rollback, but we need to be able to know that the index
// was created...
}
constraintIndexDoDrop(new IndexDescriptor(constraint.label(), constraint.propertyKeyId()));
constraintsChangesForLabel(constraint.label()).remove(constraint);
hasChanges = true;
}
@Override
public void constraintDoAdd(UniquenessConstraint constraint, long indexId) {
constraintsChanges().add(constraint);
createdConstraintIndexesByConstraint().put(constraint, indexId);
getOrCreateLabelState(constraint.label()).constraintsChanges().add(constraint);
hasChanges = true;
}