private void ShowRelCounts(KernelTransaction ktx, DbStructureVisitor visitor)
{
// all wildcards
NoSide(ktx, visitor, _wildcardRelType, ANY_RELATIONSHIP_TYPE);
TokenRead tokenRead = ktx.TokenRead();
// one label only
foreach (Label label in _db.AllLabels)
{
int labelId = tokenRead.NodeLabel(label.Name());
LeftSide(ktx, visitor, label, labelId, _wildcardRelType, ANY_RELATIONSHIP_TYPE);
RightSide(ktx, visitor, label, labelId, _wildcardRelType, ANY_RELATIONSHIP_TYPE);
}
// fixed rel type
foreach (RelationshipType relType in _db.AllRelationshipTypes)
{
int relTypeId = tokenRead.RelationshipType(relType.Name());
NoSide(ktx, visitor, relType, relTypeId);
foreach (Label label in _db.AllLabels)
{
int labelId = tokenRead.NodeLabel(label.Name());
// wildcard on right
LeftSide(ktx, visitor, label, labelId, relType, relTypeId);
// wildcard on left
RightSide(ktx, visitor, label, labelId, relType, relTypeId);
}
}
}
public virtual IEnumerable <ConstraintDefinition> getConstraints(RelationshipType type)
{
KernelTransaction transaction = SafeAcquireTransaction(_transactionSupplier);
using (Statement ignore = transaction.AcquireStatement())
{
TokenRead tokenRead = transaction.TokenRead();
SchemaRead schemaRead = transaction.SchemaRead();
int typeId = tokenRead.RelationshipType(type.Name());
if (typeId == [email protected]_Fields.NO_TOKEN)
{
return(emptyList());
}
return(AsConstraintDefinitions(schemaRead.ConstraintsGetForRelationshipType(typeId), tokenRead));
}
}
private int[] RelTypeIds(RelationshipType[] types, TokenRead token)
{
int[] ids = new int[types.Length];
int outIndex = 0;
foreach (RelationshipType type in types)
{
int id = token.RelationshipType(type.Name());
if (id != NO_SUCH_RELATIONSHIP_TYPE)
{
ids[outIndex++] = id;
}
}
if (outIndex != ids.Length)
{
// One or more relationship types do not exist, so we can exclude them right away.
ids = Arrays.copyOf(ids, outIndex);
}
return(ids);
}
public override void DropRelationshipPropertyExistenceConstraint(RelationshipType type, string propertyKey)
{
KernelTransaction transaction = SafeAcquireTransaction(TransactionSupplier);
using (Statement ignore = transaction.AcquireStatement())
{
try
{
TokenRead tokenRead = transaction.TokenRead();
int typeId = tokenRead.RelationshipType(type.Name());
int propertyKeyId = tokenRead.PropertyKey(propertyKey);
transaction.SchemaWrite().constraintDrop(ConstraintDescriptorFactory.existsForRelType(typeId, propertyKeyId));
}
catch (DropConstraintFailureException e)
{
throw new ConstraintViolationException(e.GetUserMessage(new SilentTokenNameLookup(transaction.TokenRead())), e);
}
catch (Exception e) when(e is InvalidTransactionTypeKernelException || e is SchemaKernelException)
{
throw new ConstraintViolationException(e.Message, e);
}
}
}
public virtual GraphResult BuildSchemaGraph()
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.Map<String,VirtualNodeHack> nodes = new java.util.HashMap<>();
IDictionary <string, VirtualNodeHack> nodes = new Dictionary <string, VirtualNodeHack>();
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final java.util.Map<String,java.util.Set<VirtualRelationshipHack>> relationships = new java.util.HashMap<>();
IDictionary <string, ISet <VirtualRelationshipHack> > relationships = new Dictionary <string, ISet <VirtualRelationshipHack> >();
using (Statement statement = _kernelTransaction.acquireStatement())
{
Read dataRead = _kernelTransaction.dataRead();
TokenRead tokenRead = _kernelTransaction.tokenRead();
TokenNameLookup tokenNameLookup = new SilentTokenNameLookup(tokenRead);
SchemaRead schemaRead = _kernelTransaction.schemaRead();
using (Transaction transaction = _graphDatabaseAPI.beginTx())
{
// add all labelsInDatabase
using (ResourceIterator <Label> labelsInDatabase = _graphDatabaseAPI.AllLabelsInUse.GetEnumerator())
{
while (labelsInDatabase.MoveNext())
{
Label label = labelsInDatabase.Current;
int labelId = tokenRead.NodeLabel(label.Name());
IDictionary <string, object> properties = new Dictionary <string, object>();
IEnumerator <IndexReference> indexReferences = schemaRead.IndexesGetForLabel(labelId);
List <string> indexes = new List <string>();
while (indexReferences.MoveNext())
{
IndexReference index = indexReferences.Current;
if (!index.Unique)
{
string[] propertyNames = PropertyNameUtils.getPropertyKeys(tokenNameLookup, index.Properties());
indexes.Add(string.join(",", propertyNames));
}
}
properties["indexes"] = indexes;
IEnumerator <ConstraintDescriptor> nodePropertyConstraintIterator = schemaRead.ConstraintsGetForLabel(labelId);
List <string> constraints = new List <string>();
while (nodePropertyConstraintIterator.MoveNext())
{
ConstraintDescriptor constraint = nodePropertyConstraintIterator.Current;
constraints.Add(constraint.PrettyPrint(tokenNameLookup));
}
properties["constraints"] = constraints;
GetOrCreateLabel(label.Name(), properties, nodes);
}
}
//add all relationships
using (ResourceIterator <RelationshipType> relationshipTypeIterator = _graphDatabaseAPI.AllRelationshipTypesInUse.GetEnumerator())
{
while (relationshipTypeIterator.MoveNext())
{
RelationshipType relationshipType = relationshipTypeIterator.Current;
string relationshipTypeGetName = relationshipType.Name();
int relId = tokenRead.RelationshipType(relationshipTypeGetName);
using (ResourceIterator <Label> labelsInUse = _graphDatabaseAPI.AllLabelsInUse.GetEnumerator())
{
IList <VirtualNodeHack> startNodes = new LinkedList <VirtualNodeHack>();
IList <VirtualNodeHack> endNodes = new LinkedList <VirtualNodeHack>();
while (labelsInUse.MoveNext())
{
Label labelToken = labelsInUse.Current;
string labelName = labelToken.Name();
IDictionary <string, object> properties = new Dictionary <string, object>();
VirtualNodeHack node = GetOrCreateLabel(labelName, properties, nodes);
int labelId = tokenRead.NodeLabel(labelName);
if (dataRead.CountsForRelationship(labelId, relId, [email protected]_Fields.ANY_LABEL) > 0)
{
startNodes.Add(node);
}
if (dataRead.CountsForRelationship([email protected]_Fields.ANY_LABEL, relId, labelId) > 0)
{
endNodes.Add(node);
}
}
foreach (VirtualNodeHack startNode in startNodes)
{
foreach (VirtualNodeHack endNode in endNodes)
{
AddRelationship(startNode, endNode, relationshipTypeGetName, relationships);
}
}
}
}
}
transaction.Success();
return(GetGraphResult(nodes, relationships));
}
}
}
