use of org.neo4j.kernel.api.exceptions.schema.AlreadyIndexedException in project neo4j by neo4j.
the class Operations method assertNoBlockingSchemaRulesExists.
private void assertNoBlockingSchemaRulesExists(ConstraintDescriptor constraint) throws EquivalentSchemaRuleAlreadyExistsException, IndexWithNameAlreadyExistsException, ConstraintWithNameAlreadyExistsException, AlreadyConstrainedException, AlreadyIndexedException {
final String name = constraint.getName();
if (name == null) {
throw new IllegalStateException("Expected constraint to always have a name by this point");
}
// Equivalent constraint
final List<ConstraintDescriptor> constraintsWithSameSchema = Iterators.asList(allStoreHolder.constraintsGetForSchema(constraint.schema()));
for (ConstraintDescriptor constraintWithSameSchema : constraintsWithSameSchema) {
if (constraint.equals(constraintWithSameSchema) && constraint.getName().equals(constraintWithSameSchema.getName())) {
throw new EquivalentSchemaRuleAlreadyExistsException(constraintWithSameSchema, CONSTRAINT_CREATION, token);
}
}
// Name conflict with other schema rule
assertSchemaRuleWithNameDoesNotExist(name);
// Already constrained
for (ConstraintDescriptor constraintWithSameSchema : constraintsWithSameSchema) {
final boolean creatingExistenceConstraint = constraint.type() == ConstraintType.EXISTS;
final boolean existingIsExistenceConstraint = constraintWithSameSchema.type() == ConstraintType.EXISTS;
if (creatingExistenceConstraint == existingIsExistenceConstraint) {
throw new AlreadyConstrainedException(constraintWithSameSchema, CONSTRAINT_CREATION, token);
}
}
// Already indexed
if (constraint.type() != ConstraintType.EXISTS) {
Iterator<IndexDescriptor> existingIndexes = allStoreHolder.index(constraint.schema());
if (existingIndexes.hasNext()) {
IndexDescriptor existingIndex = existingIndexes.next();
throw new AlreadyIndexedException(existingIndex.schema(), CONSTRAINT_CREATION, token);
}
}
// is being populated we will end up with two indexes on the same schema.
if (constraint.isIndexBackedConstraint() && ktx.hasTxStateWithChanges()) {
for (ConstraintDescriptor droppedConstraint : ktx.txState().constraintsChanges().getRemoved()) {
// If dropped and new constraint have similar backing index we cannot allow this constraint creation
if (droppedConstraint.isIndexBackedConstraint() && constraint.schema().equals(droppedConstraint.schema())) {
throw new UnsupportedOperationException(format("Trying to create constraint '%s' in same transaction as dropping '%s'. " + "This is not supported because they are both backed by similar indexes. " + "Please drop constraint in a separate transaction before creating the new one.", constraint.getName(), droppedConstraint.getName()));
}
}
}
}
use of org.neo4j.kernel.api.exceptions.schema.AlreadyIndexedException in project neo4j by neo4j.
the class Operations method assertNoBlockingSchemaRulesExists.
private void assertNoBlockingSchemaRulesExists(IndexPrototype prototype) throws EquivalentSchemaRuleAlreadyExistsException, IndexWithNameAlreadyExistsException, ConstraintWithNameAlreadyExistsException, AlreadyIndexedException, AlreadyConstrainedException {
Optional<String> prototypeName = prototype.getName();
if (prototypeName.isEmpty()) {
throw new IllegalStateException("Expected index to always have a name by this point");
}
String name = prototypeName.get();
// Equivalent index
IndexDescriptor indexWithSameSchema = IndexDescriptor.NO_INDEX;
Iterator<IndexDescriptor> indexesWithSameSchema = allStoreHolder.index(prototype.schema());
while (indexesWithSameSchema.hasNext()) {
indexWithSameSchema = indexesWithSameSchema.next();
if (indexWithSameSchema.getName().equals(name) && indexWithSameSchema.isUnique() == prototype.isUnique()) {
throw new EquivalentSchemaRuleAlreadyExistsException(indexWithSameSchema, INDEX_CREATION, token);
}
}
// Name conflict with other schema rule
assertSchemaRuleWithNameDoesNotExist(name);
// Already constrained
final Iterator<ConstraintDescriptor> constraintWithSameSchema = allStoreHolder.constraintsGetForSchema(prototype.schema());
while (constraintWithSameSchema.hasNext()) {
final ConstraintDescriptor constraint = constraintWithSameSchema.next();
if (constraint.type() != ConstraintType.EXISTS) {
throw new AlreadyConstrainedException(constraint, INDEX_CREATION, token);
}
}
// Already indexed
if (indexWithSameSchema != IndexDescriptor.NO_INDEX) {
throw new AlreadyIndexedException(prototype.schema(), INDEX_CREATION, token);
}
}
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