/// <summary>
/// Single IDNode selection attribute
/// </summary>
/// <param name="myReference"></param>
/// <param name="myAlias"></param>
/// <param name="myAStructureNode"></param>
/// <param name="myGraphType"></param>
public Exceptional AddElementToSelection(string myAlias, String myReference, IDChainDefinition myIDChainDefinition, Boolean myIsGroupedOrAggregated, SelectValueAssignment mySelectValueAssignment = null)
{
SelectionElement lastElem = null;
var curLevel = new EdgeList();
EdgeList preLevel = null;
if (myReference != null && _Selections.ContainsKey(myReference) && _Selections[myReference].Any(kv => kv.Value.Any(se => se.RelatedIDChainDefinition == myIDChainDefinition && se.Alias == myAlias)))
{
return new Exceptional(new Error_DuplicateAttributeSelection(myAlias));
}
foreach (var nodeEdgeKey in myIDChainDefinition)
{
if (nodeEdgeKey is ChainPartTypeOrAttributeDefinition)
{
#region Usual attribute
preLevel = null;
var selElem = new SelectionElement(myAlias, curLevel, myIsGroupedOrAggregated, myIDChainDefinition);
var typeOrAttr = (nodeEdgeKey as ChainPartTypeOrAttributeDefinition);
if (true || typeOrAttr.DBType != null && typeOrAttr.TypeAttribute != null)
{
#region defined
var edgeKey = typeOrAttr.EdgeKey;
selElem.Element = typeOrAttr.TypeAttribute; //_DBContext.DBTypeManager.GetTypeAttributeByEdge(edgeKey);
if (String.IsNullOrEmpty(selElem.Alias) || (nodeEdgeKey.Next != null && !(nodeEdgeKey.Next is ChainPartFuncDefinition)))
{
selElem.Alias = typeOrAttr.TypeAttribute.Name;//_DBContext.DBTypeManager.GetTypeAttributeByEdge(edgeKey).Name;
}
curLevel += edgeKey;
preLevel = curLevel.GetPredecessorLevel();
#endregion
}
else
{
#region undefined attribute
if (myIDChainDefinition.Level == 0)
{
preLevel = new EdgeList(myIDChainDefinition.LastType.UUID);
}
else
{
var element = _Selections[myReference].Last();
preLevel = curLevel.GetPredecessorLevel();
//preLevel = curLevel;
}
selElem.Alias = typeOrAttr.TypeOrAttributeName;
selElem.Element = new UndefinedTypeAttribute(typeOrAttr.TypeOrAttributeName);
#endregion
}
#region Add to _Selections if valid
if (!_Selections.ContainsKey(myReference))
{
_Selections.Add(myReference, new Dictionary<EdgeList, List<SelectionElement>>());
}
if (!_Selections[myReference].ContainsKey(preLevel))
{
_Selections[myReference].Add(preLevel, new List<SelectionElement>());
}
///
/// Duplicate AttributeSelection is: "U.Name, U.Name" or "U.Name.TOUPPER(), U.Name" but not "U.Friends.TOP(1).Name, U.Friends.TOP(1).Age"
if ((nodeEdgeKey.Next == null || (nodeEdgeKey.Next is ChainPartFuncDefinition && nodeEdgeKey.Next.Next == null))
// U.Name, U.Name U.Name.TOUPPER, U.Name
&& _Selections[myReference][preLevel].Exists(item => item.Alias == selElem.Alias && selElem.EdgeList.Level == item.EdgeList.Level && item.RelatedIDChainDefinition.Depth == selElem.RelatedIDChainDefinition.Depth && item.Element != null) && !myIsGroupedOrAggregated)
{
return new Exceptional(new Error_DuplicateAttributeSelection(selElem.Alias));
}
// Do not add again if:
// - it is a defined attribute and there is an asterisk selection at this level
// - it is not the last part AND
// - there is already an item of this part with the same alias and the same Depth
if (nodeEdgeKey.Next == null || _Selections[myReference][preLevel].Count == 0 || _Selections[myReference][preLevel].Any(item => IsNewSelectionElement(item, selElem)))
{
_Selections[myReference][preLevel].Add(selElem);
}
#endregion
lastElem = selElem;
#endregion
}
else if (nodeEdgeKey is ChainPartFuncDefinition)
{
var chainPartFuncDefinition = (nodeEdgeKey as ChainPartFuncDefinition);
#region Function
if (myReference == null)
{
#region Type independent functions
var selElem = new SelectionElement(myAlias, myIDChainDefinition);
if (String.IsNullOrEmpty(selElem.Alias))
{
selElem.Alias = chainPartFuncDefinition.SourceParsedString;
}
var funcElem = new SelectionElementFunction(selElem, chainPartFuncDefinition, chainPartFuncDefinition.Parameters);
if (lastElem is SelectionElementFunction)
{
(lastElem as SelectionElementFunction).AddFollowingFunction(funcElem);
lastElem = funcElem;
}
else
{
if (_SelectionElementsTypeIndependend.Any(se => se.Alias == funcElem.Alias))
{
return new Exceptional(new Error_DuplicateAttributeSelection(funcElem.Alias));
}
_SelectionElementsTypeIndependend.Add(funcElem);
lastElem = funcElem;
}
#endregion
}
else
{
#region Type dependent function
var funcElem = new SelectionElementFunction(lastElem, (nodeEdgeKey as ChainPartFuncDefinition), (nodeEdgeKey as ChainPartFuncDefinition).Parameters);
funcElem.RelatedIDChainDefinition = myIDChainDefinition;
if (!String.IsNullOrEmpty(myAlias) && nodeEdgeKey.Next == null)
{
funcElem.Alias = myAlias;
}
if (lastElem is SelectionElementFunction)
{
(lastElem as SelectionElementFunction).AddFollowingFunction(funcElem);
lastElem = funcElem;
}
else if (_Selections[myReference][preLevel].Contains(lastElem))
{
#region Add function to the last selection element (replace it)
_Selections[myReference][preLevel].Remove(lastElem);
//lastElem = new SelectionElementFunction(lastElem, (nodeEdgeKey as ChainPartFuncDefinition), (nodeEdgeKey as ChainPartFuncDefinition).Parameters);
//lastElem.RelatedIDChainDefinition = myIDChainDefinition;
//if (!String.IsNullOrEmpty(alias) && nodeEdgeKey.Next == null)
//{
// lastElem.Alias = alias;
//}
lastElem = funcElem;
if (!_Selections[myReference][preLevel].Contains(lastElem)) // In case this Element with func is already in the selection list do nothing.
{
_Selections[myReference][preLevel].Add(lastElem);
}
#endregion
}
else if (!_Selections[myReference][preLevel].Contains(funcElem))
{
#region In this case we have a similar function but NOT THE SAME. Since we don't know what to do, return error.
return new Exceptional(new Error_InvalidAttributeSelection(myIDChainDefinition.ContentString));
#endregion
}
#endregion
}
#endregion
}
}
#region Set the SelectValueAssignment for the last element
if (lastElem != null && mySelectValueAssignment != null)
{
#region Error handling
System.Diagnostics.Debug.Assert(lastElem.Element != null);
if (lastElem.Element.IsUserDefinedType(_DBContext.DBTypeManager))
{
return new Exceptional(new Error_InvalidSelectValueAssignment(lastElem.Element.Name));
}
if (!(mySelectValueAssignment.TermDefinition is ValueDefinition))
{
return new Exceptional(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
#endregion
#region Validate datatype if the attribute is a defined attribute
if (!(lastElem.Element is UndefinedTypeAttribute))
{
if (!lastElem.Element.GetADBBaseObjectType(_DBContext.DBTypeManager).IsValidValue((mySelectValueAssignment.TermDefinition as ValueDefinition).Value.Value))
{
return new Exceptional(new Error_SelectValueAssignmentDataTypeDoesNotMatch(lastElem.Element.GetADBBaseObjectType(_DBContext.DBTypeManager).ObjectName, (mySelectValueAssignment.TermDefinition as ValueDefinition).Value.ObjectName));
}
var typedValue = new ValueDefinition(lastElem.Element.GetADBBaseObjectType(_DBContext.DBTypeManager).Clone((mySelectValueAssignment.TermDefinition as ValueDefinition).Value.Value));
mySelectValueAssignment.TermDefinition = typedValue;
}
#endregion
lastElem.SelectValueAssignment = mySelectValueAssignment;
}
#endregion
return Exceptional.OK;
}
/// <summary>
/// This will load the vertex (check for load errors) and get all selected attributes of this vertex
/// </summary>
/// <param name="myObjectUUID"></param>
/// <param name="myTypeOfAttribute"></param>
/// <param name="myDepth"></param>
/// <param name="myLevelKey"></param>
/// <param name="myReference"></param>
/// <param name="myUsingGraph"></param>
/// <returns></returns>
private Vertex LoadAndResolveVertex(ObjectUUID myObjectUUID, GraphDBType myTypeOfAttribute, Int64 myDepth, EdgeList myLevelKey, String myReference, Boolean myUsingGraph)
{
var dbStream = _DBContext.DBObjectCache.LoadDBObjectStream(myTypeOfAttribute, myObjectUUID);
var curType = _DBContext.DBTypeManager.GetTypeByUUID(myLevelKey.LastEdge.TypeUUID);
var curAttr = curType.GetTypeAttributeByUUID(myLevelKey.LastEdge.AttrUUID);
if (!CheckLoadedDBObjectStream(dbStream, curType, curAttr))
{
return GenerateNotResolvedVertex(myObjectUUID, _DBContext.DBTypeManager.GetTypeByUUID(myLevelKey.LastEdge.TypeUUID));
}
return new Vertex(GetAllSelectedAttributesFromVertex(dbStream.Value, myTypeOfAttribute, myDepth, myLevelKey, myReference, myUsingGraph));
}
/// <summary>
/// This will add all attributes of <paramref name="myDBObject"/> to the <paramref name="myAttributes"/> reference. Reference attributes will be resolved to the <paramref name="myDepth"/>
/// </summary>
/// <param name="myAttributes"></param>
/// <param name="myType"></param>
/// <param name="myDBObject"></param>
/// <param name="myDepth"></param>
/// <param name="myEdgeList"></param>
/// <param name="myReference"></param>
/// <param name="myUsingGraph"></param>
/// <param name="mySelType"></param>
/// <param name="myTypeID"></param>
private void AddAttributesByDBO(ref Dictionary<String, Object> myAttributes, GraphDBType myType, DBObjectStream myDBObject, Int64 myDepth, EdgeList myEdgeList, String myReference, Boolean myUsingGraph, TypesOfSelect mySelType, TypeUUID myTypeID = null)
{
#region Get all attributes which are stored at the DBO
foreach (var attr in myDBObject.GetAttributes())
{
#region Check whether the attribute is still exist in the type - if not, continue
var typeAttr = myType.GetTypeAttributeByUUID(attr.Key);
if (typeAttr == null)
{
continue;
}
#endregion
#region Only attributes of the selected myTypeID (TypesOfSelect.Ad)
if (mySelType == TypesOfSelect.Ad)
{
if (myTypeID != typeAttr.GetDBType(_DBContext.DBTypeManager).UUID)
{
continue;
}
}
#endregion
if (attr.Value is ADBBaseObject)
{
#region Single base object
if (mySelType != TypesOfSelect.Minus && mySelType != TypesOfSelect.Gt && mySelType != TypesOfSelect.Lt)
{
myAttributes.Add(typeAttr.Name, (attr.Value as ADBBaseObject).GetReadoutValue());
}
#endregion
}
else if (attr.Value is IBaseEdge)
{
#region List of base objects
if (mySelType != TypesOfSelect.Minus && mySelType != TypesOfSelect.Gt && mySelType != TypesOfSelect.Lt)
{
myAttributes.Add(typeAttr.Name, (attr.Value as IBaseEdge).GetReadoutValues());
}
#endregion
}
else if (attr.Value is IReferenceEdge)
{
#region Reference edge
if (mySelType == TypesOfSelect.Minus || mySelType == TypesOfSelect.Asterisk || mySelType == TypesOfSelect.Ad || mySelType == TypesOfSelect.Gt)
{
// Since we can define special depth (via setting) for attributes we need to check them now
myDepth = GetDepth(-1, myDepth, myType, typeAttr);
if ((myDepth > 0))
{
myAttributes.Add(typeAttr.Name, ResolveAttributeValue(typeAttr, attr.Value, myDepth, myEdgeList, myDBObject, myReference, myUsingGraph));
}
else
{
myAttributes.Add(typeAttr.Name, GetNotResolvedReferenceAttributeValue(myDBObject, typeAttr, myType, myEdgeList, myUsingGraph, _DBContext));
}
}
#endregion
}
else
{
throw new GraphDBException(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
}
#endregion
#region Get all backwardEdge attributes
if (mySelType == TypesOfSelect.Minus || mySelType == TypesOfSelect.Asterisk || mySelType == TypesOfSelect.Ad || mySelType == TypesOfSelect.Lt)
{
foreach (var beAttr in GetBackwardEdgeAttributes(myType))
{
if (myDepth > 0)
{
if (mySelType == TypesOfSelect.Ad)
{
if (beAttr.BackwardEdgeDefinition.TypeUUID != myTypeID)
{
continue;
}
}
var bes = myDBObject.GetBackwardEdges(beAttr.BackwardEdgeDefinition, _DBContext, _DBContext.DBObjectCache, beAttr.GetDBType(_DBContext.DBTypeManager));
if (bes.Failed())
throw new GraphDBException(bes.IErrors);
if (bes.Value != null) // otherwise the DBO does not have any
myAttributes.Add(beAttr.Name, ResolveAttributeValue(beAttr, bes.Value, myDepth, myEdgeList, myDBObject, myReference, myUsingGraph));
}
else
{
if (mySelType == TypesOfSelect.Ad)
{
if (beAttr.BackwardEdgeDefinition.TypeUUID != myTypeID)
{
continue;
}
}
var notResolvedBEs = GetNotResolvedBackwardEdgeReferenceAttributeValue(myDBObject, beAttr, beAttr.BackwardEdgeDefinition, myEdgeList, myUsingGraph, _DBContext);
if (notResolvedBEs != null)
{
myAttributes.Add(beAttr.Name, notResolvedBEs);
}
}
}
}
#endregion
#region Get all undefined attributes from DBO
if (mySelType == TypesOfSelect.Asterisk || mySelType == TypesOfSelect.Rhomb)
{
var undefAttrException = myDBObject.GetUndefinedAttributes(_DBContext.DBObjectManager);
if (undefAttrException.Failed())
throw new GraphDBException(undefAttrException.IErrors);
foreach (var undefAttr in undefAttrException.Value)
myAttributes.Add(undefAttr.Key, undefAttr.Value.GetReadoutValue());
}
#endregion
#region Add special attributes
if (mySelType == TypesOfSelect.Asterisk)
{
foreach (var specialAttr in GetSpecialAttributes(myType))
{
if (!myAttributes.ContainsKey(specialAttr.Name))
{
var result = (specialAttr as ASpecialTypeAttribute).ExtractValue(myDBObject, myType, _DBContext);
if (result.Failed())
{
throw new GraphDBException(result.IErrors);
}
myAttributes.Add(specialAttr.Name, result.Value.GetReadoutValue());
}
}
}
#endregion
}
/// <summary>
/// Examine a TypeNode to a specific <paramref name="myResolutionDepth"/> by using the underlying graph or the type guid index
/// </summary>
/// <param name="myResolutionDepth">The depth to which the reference attributes should be resolved</param>
/// <param name="myTypeNode">The type node which should be examined on selections</param>
/// <param name="myUsingGraph">True if there is a valid where expression of this typeNode</param>
/// <returns>True if succeeded, false if there was nothing to select for this type</returns>
public Exceptional<Boolean> Examine(Int64 myResolutionDepth, String myReference, GraphDBType myReferencedDBType, Boolean myUsingGraph, ref IEnumerable<Vertex> myVertices)
{
if ((!_Selections.ContainsKey(myReference) || !_Selections[myReference].ContainsKey(new EdgeList(myReferencedDBType.UUID))) && _Aggregates.IsNullOrEmpty())
{
return new Exceptional<bool>(false);
}
var levelKey = new EdgeList(myReferencedDBType.UUID);
myVertices = ExamineVertex(myResolutionDepth, myReference, myReferencedDBType, levelKey, myUsingGraph);
return new Exceptional<Boolean>(true);
}
/// <summary>
/// Checks whether this element is a reference AND has some following selections
/// </summary>
/// <returns></returns>
public Boolean IsReferenceToSkip(EdgeList myEdgeList)
{
if (Element != null && !(this is SelectionElementFunction))
{
if (Element.KindOfType == KindsOfType.SetOfReferences || Element.KindOfType == KindsOfType.SingleReference)
{
if (RelatedIDChainDefinition.Edges.Count > myEdgeList.Edges.Count) // if the IDNode is only one level above we can't skip this selection elemen because it is the last one: U.Friends
{
return true;
}
else if (RelatedIDChainDefinition.Edges.Count == myEdgeList.Edges.Count && RelatedIDChainDefinition.IsUndefinedAttribute)
{
return true;
}
else
{
return false;
}
}
}
return false;
}
private Edge GetNotResolvedBackwardEdgeReferenceAttributeValue(DBObjectStream myDBObject, TypeAttribute myTypeAttribute, EdgeKey edgeKey, EdgeList currentEdgeList, Boolean myUsingGraph, DBContext _DBContext)
{
IObject attrValue = null;
if (myUsingGraph)
{
var interestingLevelKey = new LevelKey((currentEdgeList + new EdgeKey(myTypeAttribute.RelatedGraphDBTypeUUID, myTypeAttribute.UUID)).Edges, _DBContext.DBTypeManager);
attrValue = new EdgeTypeSetOfReferences(_ExpressionGraph.SelectUUIDs(interestingLevelKey, myDBObject), myTypeAttribute.DBTypeUUID);
}
else
{
var attrValueException = myDBObject.GetBackwardEdges(edgeKey, _DBContext, _DBContext.DBObjectCache, myTypeAttribute.GetDBType(_DBContext.DBTypeManager));
if (attrValueException.Failed())
{
throw new GraphDBException(attrValueException.IErrors);
}
attrValue = attrValueException.Value;
}
if (attrValue == null)
{
return null;
}
else if (!(attrValue is IReferenceEdge))
{
throw new GraphDBException(new Error_InvalidEdgeType(attrValue.GetType(), typeof(IReferenceEdge)));
}
var readouts = new List<Vertex>();
var typeName = _DBContext.DBTypeManager.GetTypeByUUID(edgeKey.TypeUUID).Name;
foreach (var reference in (attrValue as IReferenceEdge).GetAllReferenceIDs())
{
var specialAttributes = new Dictionary<string, object>();
specialAttributes.Add(SpecialTypeAttribute_UUID.AttributeName, reference);
specialAttributes.Add(SpecialTypeAttribute_TYPE.AttributeName, typeName);
readouts.Add(new Vertex(specialAttributes));
}
return new Edge(null, readouts, _DBContext.DBTypeManager.GetTypeAttributeByEdge(edgeKey).GetDBType(_DBContext.DBTypeManager).Name);
}
/// <summary>
/// Gets all selected attributes of an <paramref name="aDBObject"/> or on asterisk all attributes
/// </summary>
/// <param name="aDBObject"></param>
/// <param name="typeOfAttribute"></param>
/// <param name="myDepth"></param>
/// <param name="myLevelKey"></param>
/// <param name="reference"></param>
/// <param name="myUsingGraph"></param>
/// <returns></returns>
private Dictionary<string, object> GetAllSelectedAttributesFromVertex(DBObjectStream myDBObject, GraphDBType myDBType, Int64 myDepth, EdgeList myLevelKey, String myReference, Boolean myUsingGraph, Boolean selectAllAttributes = false)
{
Dictionary<string, object> Attributes = new Dictionary<string, object>();
Int64 Depth;
var minDepth = 0;
IEnumerable<SelectionElement> attributeSelections = null;
if (!selectAllAttributes)
{
attributeSelections = getAttributeSelections(myReference, myDBType, myLevelKey);
}
if (attributeSelections.IsNullOrEmpty() || selectAllAttributes)// && myLevelKey.Level > 0)
{
#region Get all attributes from the DBO if nothing special was selected
if ((myDepth == -1) || (myDepth >= myLevelKey.Level))
{
AddAttributesByDBO(ref Attributes, myDBType, myDBObject, myDepth, myLevelKey, myReference, myUsingGraph, TypesOfSelect.Asterisk);
}
#endregion
}
else
{
foreach (var attrSel in attributeSelections)
{
#region extract the selected infos
//myDepth = attrSel.EdgeList.Level;
#region Some kind of asterisk - return all attributes
if (attrSel.Selection != TypesOfSelect.None)
{
#region Asterisk (*), Rhomb (#), Minus (-), Ad (@) selection
Depth = GetDepth(myDepth, 0, myDBType);
AddAttributesByDBO(ref Attributes, myDBType, myDBObject, Depth, myLevelKey, myReference, myUsingGraph, attrSel.Selection, attrSel.TypeID);
#endregion
continue;
}
#endregion
#region Alias
String alias = String.Empty;
if (attrSel.Element == null)
{
alias = (attrSel.Alias == null) ? attrSel.RelatedIDChainDefinition.UndefinedAttribute : attrSel.Alias;
}
else
{
alias = (attrSel.Alias == null) ? (attrSel.Element as TypeAttribute).Name : attrSel.Alias;
}
#endregion
if (Attributes.ContainsKey(alias))
{
// This is a bug in the attributeSelections add method. No attribute should be in the selected list twice.
// If one attribute was selected more than one, these information will be stored in the next level.
//System.Diagnostics.Debug.Assert(false, "The attribute '" + alias + "' is selected twice in that level - this shouldnt!");
continue;
}
if (attrSel is SelectionElementFunction)
{
#region Select a function
var selectionElementFunction = (attrSel as SelectionElementFunction);
if (selectionElementFunction.SelectValueAssignment != null && selectionElementFunction.SelectValueAssignment.ValueAssignmentType == SelectValueAssignment.ValueAssignmentTypes.Always)
{
Attributes.Add(alias, (selectionElementFunction.SelectValueAssignment.TermDefinition as ValueDefinition).Value.GetReadoutValue());
continue;
}
#region Get the CallingObject
IObject callingObject = null;
var typeOfDBObjects = selectionElementFunction.Element.GetDBType(_DBContext.DBTypeManager);
if (myUsingGraph)
{
myUsingGraph = _ExpressionGraph.IsGraphRelevant(new LevelKey((myLevelKey + new EdgeKey(selectionElementFunction.Element)).Edges, _DBContext.DBTypeManager), myDBObject);
}
if (myUsingGraph && (typeOfDBObjects.IsUserDefined || typeOfDBObjects.IsBackwardEdge))
{
var edge = GetAttributeValue(myDBType, selectionElementFunction.Element, myDBObject, myLevelKey);
if (edge is IReferenceEdge)
callingObject = (edge as IReferenceEdge).GetNewInstance(_ExpressionGraph.SelectUUIDs(new LevelKey((myLevelKey + new EdgeKey(selectionElementFunction.Element)).Edges, _DBContext.DBTypeManager), myDBObject, true), typeOfDBObjects.UUID);
else if (edge == null)
callingObject = null;
else
throw new GraphDBException(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
else
{
callingObject = GetAttributeValue(myDBType, selectionElementFunction.Element, myDBObject, myLevelKey) as IObject;
}
#endregion
#region Execute the function
var res = ExecuteFunction(selectionElementFunction, myDBObject, callingObject, myDepth, myReference, myDBType, myLevelKey, myUsingGraph);
if (res == null)
{
continue;
}
if (res.Failed())
{
throw new GraphDBException(res.IErrors);
}
#endregion
#region Add function return value to attributes
if (res.Value.Value is IReferenceEdge)
{
#region Reference edge
//minDepth = attrSel.EdgeList.Level + 1; // depth should be at least the depth of the selected element
minDepth = (attrSel.RelatedIDChainDefinition != null) ? attrSel.RelatedIDChainDefinition.Edges.Count - 1 : 0;
myUsingGraph = false;
Depth = GetDepth(myDepth, minDepth, myDBType);
if (Depth > myLevelKey.Level || getAttributeSelections(myReference, myDBType, myLevelKey + new EdgeKey((attrSel as SelectionElementFunction).Element)).IsNotNullOrEmpty())
{
myUsingGraph = false;
#region Resolve DBReferences
Attributes.Add(alias,
ResolveAttributeValue(((FuncParameter)res.Value).TypeAttribute, ((FuncParameter)res.Value).Value, Depth, myLevelKey, myDBObject, myReference, myUsingGraph));
#endregion
}
else
{
Attributes.Add(alias, GetNotResolvedReferenceEdgeAttributeValue(res.Value.Value as IReferenceEdge, res.Value.TypeAttribute.GetDBType(_DBContext.DBTypeManager), _DBContext));
}
#endregion
}
else
{
Attributes.Add(alias, ((FuncParameter)res.Value).Value.GetReadoutValue());
}
#endregion
#endregion
}
else if (attrSel.Element is UndefinedTypeAttribute)
{
#region undefined attribute selection
var undef_alias = attrSel.Alias;
if (!Attributes.ContainsKey(undef_alias))
{
Object attrValue = null;
if (GetAttributeValueAndResolve(myDBType, attrSel, myDBObject, 0, myLevelKey, myReference, myUsingGraph, out attrValue, undef_alias))
{
Attributes.Add(undef_alias, attrValue);
}
}
#endregion
}
else
{
#region Attribute selection
minDepth = (attrSel.RelatedIDChainDefinition != null) ? attrSel.RelatedIDChainDefinition.Edges.Count - 1 : 0;
//var alias = (attrSel.Alias == null) ? (attrSel.Element as TypeAttribute).Name : attrSel.Alias;
if (myLevelKey.Level > 0 && !(attrSel.Element is ASpecialTypeAttribute)) // use the related type instead
Depth = GetDepth(myDepth, minDepth, (attrSel.Element as TypeAttribute).GetRelatedType(_DBContext.DBTypeManager), (attrSel.Element as TypeAttribute));
else
Depth = GetDepth(myDepth, minDepth, myDBType, (attrSel.Element as TypeAttribute));
Object attrValue = null;
if (GetAttributeValueAndResolve(myDBType, attrSel, myDBObject, Depth, myLevelKey, myReference, myUsingGraph, out attrValue))
{
Attributes.Add(alias, attrValue);
}
#endregion
}
#endregion
}
}
return Attributes;
}
public Error_InvalidEdgeListOperation(EdgeList myEdgeList1, EdgeList myEdgeList2, string myOperation)
{
_EdgeList1 = myEdgeList1;
_EdgeList2 = myEdgeList2;
this._Operation = myOperation;
}
/// <summary>
/// Executes the function and return the result - for concatenated functions this will be done recursively
/// </summary>
/// <param name="mySelectionElementFunction"></param>
/// <param name="myDBObject"></param>
/// <param name="myCallingObject"></param>
/// <param name="myDepth"></param>
/// <param name="myReference"></param>
/// <param name="myReferencedDBType"></param>
/// <param name="myLevelKey"></param>
/// <param name="myUsingGraph"></param>
/// <returns></returns>
private Exceptional<FuncParameter> ExecuteFunction(SelectionElementFunction mySelectionElementFunction, DBObjectStream myDBObject, IObject myCallingObject, Int64 myDepth, String myReference, GraphDBType myReferencedDBType, EdgeList myLevelKey, Boolean myUsingGraph)
{
#region Function
if (myCallingObject == null) // DBObject does not have the attribute
{
if (mySelectionElementFunction.SelectValueAssignment != null)
{
return new Exceptional<FuncParameter>(new FuncParameter((mySelectionElementFunction.SelectValueAssignment.TermDefinition as ValueDefinition).Value));
}
return null;
}
#region Get the FunctionNode and validate the Element
var func = mySelectionElementFunction.Function;
func.Function.CallingAttribute = mySelectionElementFunction.Element;
if (mySelectionElementFunction.Element == null)
{
return null;
}
#endregion
func.Function.CallingObject = myCallingObject;
#region CallingDBObjectStream
func.Function.CallingDBObjectStream = myDBObject;
#endregion
#region Execute the function
var res = func.Execute(myReferencedDBType, myDBObject, myReference, _DBContext);
if (res.Failed())
{
return new Exceptional<FuncParameter>(res);
}
else
{
if (res.Value.Value == null)
{
return null; // no result for this object because of not set attribute value
}
if (mySelectionElementFunction.FollowingFunction != null)
{
return ExecuteFunction(mySelectionElementFunction.FollowingFunction, myDBObject, res.Value.Value, myDepth, myReference, myReferencedDBType, myLevelKey, myUsingGraph);
}
else
{
return res;
}
}
#endregion
#endregion
}
public bool StartsWith(EdgeList myLevel, Boolean IncludingAttrs)
{
if (!IncludingAttrs)
return StartsWith(myLevel);
if (myLevel.Level > Level)
throw new ArgumentException(myLevel + " is greater than " + Level);
for (Int32 i = 0; i < myLevel.Level; i++)
{
if (myLevel.Edges[i].TypeUUID != Edges[i].TypeUUID || myLevel.Edges[i].AttrUUID != Edges[i].AttrUUID)
return false;
}
return true;
}
public Error_InvalidEdgeListOperation(EdgeList myEdgeList, ObjectManagement.EdgeKey myEdgeKey, string myOperation)
{
_EdgeList1 = myEdgeList;
this._EdgeKey = myEdgeKey;
this._Operation = myOperation;
}
public bool StartsWith(EdgeList myLevel)
{
if (myLevel.Level > Level)
throw new ArgumentException(myLevel + " is greater than " + Level);
for (Int32 i = 0; i < myLevel.Level; i++)
{
if (myLevel.Edges[i].TypeUUID != Edges[i].TypeUUID)
return false;
}
return true;
}
public Boolean Equals(EdgeList p)
{
// If parameter is null return false:
if ((object)p == null)
{
return false;
}
if (this.Level != p.Level)
{
return false;
}
for (int i = 0; i < Edges.Count; i++)
{
if (this.Edges[i] != p.Edges[i])
{
return false;
}
}
return true;
}
public SelectionElementAggregate(ABaseAggregate myBaseAggregate, string myAlias, EdgeList myEdgeList, LevelKey myLevelKey, IDChainDefinition myRelatedIDChainDefinition, AggregateDefinition myAggregateDefinition)
{
Alias = myAlias;
EdgeList = myEdgeList;
LevelKey = myLevelKey;
Aggregate = myBaseAggregate;
AggregateDefinition = myAggregateDefinition;
RelatedIDChainDefinition = myRelatedIDChainDefinition;
}
/// <summary> Gets an attribute value - references will be resolved. </summary>
///
/// <remarks> Stefan, 16.04.2010. </remarks>
///
/// <param name="myType"> Type. </param>
/// <param name="myTypeAttribute"> my type attribute. </param>
/// <param name="myDBObject"> my database object. </param>
/// <param name="myDepth"> Depth of my. </param>
/// <param name="myLevelKey"> my level key. </param>
/// <param name="reference"> The reference. </param>
/// <param name="myUsingGraph"> true to my using graph. </param>
/// <param name="attributeValue"> [out] The attribute value. </param>
///
/// <returns> true if it succeeds, false if the DBO does not have the attribute. </returns>
private Boolean GetAttributeValueAndResolve(GraphDBType myType, SelectionElement mySelectionelement, DBObjectStream myDBObject, Int64 myDepth, EdgeList myLevelKey, String reference, Boolean myUsingGraph, out Object attributeValue, String myUndefAttrName = null)
{
var typeAttribute = mySelectionelement.Element;
if (typeAttribute.TypeCharacteristics.IsBackwardEdge)
{
#region IsBackwardEdge
EdgeKey edgeKey = typeAttribute.BackwardEdgeDefinition;
var contBackwardExcept = myDBObject.ContainsBackwardEdge(edgeKey, _DBContext, _DBContext.DBObjectCache, myType);
if (contBackwardExcept.Failed())
throw new GraphDBException(contBackwardExcept.IErrors);
if (contBackwardExcept.Value)
{
if (myDepth > 0)
{
var dbos = myDBObject.GetBackwardEdges(edgeKey, _DBContext, _DBContext.DBObjectCache, typeAttribute.GetDBType(_DBContext.DBTypeManager));
if (dbos.Failed())
throw new GraphDBException(dbos.IErrors);
if (dbos.Value != null)
{
attributeValue = ResolveAttributeValue(typeAttribute, dbos.Value, myDepth, myLevelKey, myDBObject, reference, myUsingGraph);
return true;
}
}
else
{
attributeValue = GetNotResolvedBackwardEdgeReferenceAttributeValue(myDBObject, typeAttribute, edgeKey, myLevelKey, myUsingGraph, _DBContext);
return true;
}
}
#endregion
}
else if (myDBObject.HasAttribute(typeAttribute, _DBContext))
{
#region SelectValueAssignment - kind of static assignment of selected attribute
if (mySelectionelement.SelectValueAssignment != null && mySelectionelement.SelectValueAssignment.ValueAssignmentType == SelectValueAssignment.ValueAssignmentTypes.Always)
{
// Currently the prior add SelectionElement verifies that TermDefinition is always a ValueDefinition - if others will become valid this must be changed!
attributeValue = (mySelectionelement.SelectValueAssignment.TermDefinition as ValueDefinition).Value.Value;
return true;
}
#endregion
#region ELSE (!IsBackwardEdge)
#region not a reference attribute value
if (!typeAttribute.IsUserDefinedType(_DBContext.DBTypeManager))
{
var attrVal = myDBObject.GetAttribute(typeAttribute, myType, _DBContext);
if (attrVal.Failed())
{
throw new GraphDBException(attrVal.IErrors);
}
// currently, we do not want to return a ADBBaseObject but the real value
if (attrVal.Value is ADBBaseObject)
attributeValue = (attrVal.Value as ADBBaseObject).GetReadoutValue();
else if (attrVal.Value is IBaseEdge)
attributeValue = (attrVal.Value as IBaseEdge).GetReadoutValues();
else
attributeValue = attrVal.Value;
return true;
}
#endregion
#region ELSE Reference attribute value
else
{
if (myDepth > 0)
{
var attrValue = myDBObject.GetAttribute(typeAttribute.UUID, myType, _DBContext);
attributeValue = ResolveAttributeValue(typeAttribute, attrValue, myDepth, myLevelKey, myDBObject, reference, myUsingGraph);
return true;
}
else
{
attributeValue = GetNotResolvedReferenceAttributeValue(myDBObject, typeAttribute, myType, myLevelKey, myUsingGraph, _DBContext);
return true;
}
}
#endregion
#endregion
}
else if (mySelectionelement.SelectValueAssignment != null)
{
// Currently the prior add SelectionElement verifies that TermDefinition is always a ValueDefinition - if others will become valid this must be changed!
attributeValue = (mySelectionelement.SelectValueAssignment.TermDefinition as ValueDefinition).Value.Value;
return true;
}
attributeValue = null;
return false;
}
/// <summary>
/// Get all aggregates on this <paramref name="myReference"/>, <paramref name="myType"/> and <paramref name="myLevelKey"/>
/// </summary>
/// <param name="myReference"></param>
/// <param name="myType"></param>
/// <param name="myLevelKey"></param>
/// <returns></returns>
private List<SelectionElementAggregate> getAttributeAggregates(String myReference, GraphDBType myType, EdgeList myLevelKey)
{
if (_Aggregates.ContainsKey(myReference) && (_Aggregates[myReference].ContainsKey(myLevelKey)))
{
return _Aggregates[myReference][myLevelKey];
}
else
{
return null;
}
}
/// <summary>
/// Get the attribute value of <paramref name="myTypeAttribute"/> and calls GetNotResolvedReferenceEdgeAttributeValue with the edge
/// </summary>
/// <param name="myDBObjectStream"></param>
/// <param name="myTypeAttribute"></param>
/// <param name="myGraphDBType"></param>
/// <param name="myCurrentEdgeList"></param>
/// <param name="myUsingGraph"></param>
/// <param name="myDBContext"></param>
/// <returns></returns>
private Edge GetNotResolvedReferenceAttributeValue(DBObjectStream myDBObjectStream, TypeAttribute myTypeAttribute, GraphDBType myGraphDBType, EdgeList myCurrentEdgeList, Boolean myUsingGraph, DBContext myDBContext)
{
IObject attrValue = null;
if (myUsingGraph)
{
var interestingLevelKey = new LevelKey((myCurrentEdgeList + new EdgeKey(myGraphDBType.UUID, myTypeAttribute.UUID)).Edges, myDBContext.DBTypeManager);
var interestingUUIDs = _ExpressionGraph.SelectUUIDs(interestingLevelKey, myDBObjectStream);
attrValue = ((IReferenceEdge)myDBObjectStream.GetAttribute(myTypeAttribute.UUID, myGraphDBType, myDBContext)).GetNewInstance(interestingUUIDs, myGraphDBType.UUID);
}
else
{
attrValue = myDBObjectStream.GetAttribute(myTypeAttribute.UUID, myGraphDBType, myDBContext);
}
if (attrValue == null)
{
return null;
}
var typeName = myTypeAttribute.GetDBType(myDBContext.DBTypeManager).Name;
return GetNotResolvedReferenceEdgeAttributeValue(attrValue as IReferenceEdge, myTypeAttribute.GetDBType(myDBContext.DBTypeManager), myDBContext);
}
/// <summary>
/// Adds the typeNode as an asterisk *, rhomb # or minus - or ad
/// </summary>
/// <param name="typeNode"></param>
public Exceptional AddSelectionType(String myReference, GraphDBType myType, TypesOfSelect mySelType, TypeUUID myTypeID = null)
{
var selElem = new SelectionElement(mySelType, myTypeID);
if (!_Selections.ContainsKey(myReference))
_Selections.Add(myReference, new Dictionary<EdgeList, List<SelectionElement>>());
var level = new EdgeList(new EdgeKey(myType.UUID, null));
if (!_Selections[myReference].ContainsKey(level))
_Selections[myReference].Add(level, new List<SelectionElement>());
if (!_Selections[myReference][level].Exists(item => item.Selection == mySelType))
{
_Selections[myReference][level].Add(selElem);
}
return Exceptional.OK;
}
/// <summary>
/// Resolves an attribute
/// </summary>
/// <param name="attrDefinition">The TypeAttribute</param>
/// <param name="attributeValue">The attribute value, either a AListReferenceEdgeType or ASingleEdgeType or a basic object (Int, String, ...)</param>
/// <param name="myDepth">The current depth defined by a setting or in the select</param>
/// <param name="currentLvl">The current level (for recursive resolve)</param>
/// <returns>List<Vertex> for user defined list attributes; Vertex for reference attributes, Object for basic type values </returns>
private object ResolveAttributeValue(TypeAttribute attrDefinition, object attributeValue, Int64 myDepth, EdgeList myEdgeList, DBObjectStream mySourceDBObject, String reference, Boolean myUsingGraph)
{
#region attributeValue is not a reference type just return the value
if (!((attributeValue is ASetOfReferencesEdgeType) || (attributeValue is ASingleReferenceEdgeType)))
{
return attributeValue;
}
#endregion
#region get typeOfAttribute
var typeOfAttribute = attrDefinition.GetDBType(_DBContext.DBTypeManager);
// For backwardEdges, the baseType is the type of the DBObjects!
if (attrDefinition.TypeCharacteristics.IsBackwardEdge)
typeOfAttribute = _DBContext.DBTypeManager.GetTypeAttributeByEdge(attrDefinition.BackwardEdgeDefinition).GetRelatedType(_DBContext.DBTypeManager);
#endregion
#region Get levelKey and UsingGraph
if (!(attrDefinition is ASpecialTypeAttribute))
{
if (myEdgeList.Level == 0)
{
myEdgeList = new EdgeList(new EdgeKey(attrDefinition.RelatedGraphDBTypeUUID, attrDefinition.UUID));
}
else
{
myEdgeList += new EdgeKey(attrDefinition.RelatedGraphDBTypeUUID, attrDefinition.UUID);
}
}
// at some deeper level we could get into graph independend results. From this time, we can use the GUID index rather than asking the graph all the time
if (myUsingGraph)
{
myUsingGraph = _ExpressionGraph.IsGraphRelevant(new LevelKey(myEdgeList.Edges, _DBContext.DBTypeManager), mySourceDBObject);
}
#endregion
if (attributeValue is ASetOfReferencesEdgeType)
{
#region SetReference attribute -> return new Edge
IEnumerable<Vertex> resultList = null;
var edge = ((ASetOfReferencesEdgeType)attributeValue);
if (myUsingGraph)
{
var dbos = _ExpressionGraph.Select(new LevelKey(myEdgeList.Edges, _DBContext.DBTypeManager), mySourceDBObject, true);
resultList = GetVertices(typeOfAttribute, edge, dbos, myDepth, myEdgeList, reference, myUsingGraph);
}
else
{
resultList = GetVertices(typeOfAttribute, edge, myDepth, myEdgeList, reference, myUsingGraph);
}
return new Edge(null, resultList, typeOfAttribute.Name);
#endregion
}
else if (attributeValue is ASingleReferenceEdgeType)
{
#region Single reference
attributeValue = new Edge(null, (attributeValue as ASingleReferenceEdgeType).GetVertex(a => LoadAndResolveVertex(a, typeOfAttribute, myDepth, myEdgeList, reference, myUsingGraph))
, typeOfAttribute.Name);
return attributeValue;
#endregion
}
else
{
throw new GraphDBException(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
}
/// <summary>
/// Resolve a AListReferenceEdgeType to a DBObjectReadouts. This will resolve each edge target using the 'GetAllAttributesFromDBO' method
/// </summary>
/// <param name="myTypeOfAttribute"></param>
/// <param name="myVertices"></param>
/// <param name="myDepth"></param>
/// <param name="currentLvl"></param>
/// <returns></returns>
internal IEnumerable<Vertex> GetVertices(GraphDBType myTypeOfAttribute, ASetOfReferencesEdgeType myVertices, IEnumerable<Exceptional<DBObjectStream>> myObjectUUIDs, Int64 myDepth, EdgeList myLevelKey, String myReference, Boolean myUsingGraph)
{
foreach (var _Vertex in myVertices.GetReadouts(_ObjectUUID => LoadAndResolveVertex(_ObjectUUID,
myTypeOfAttribute,
myDepth,
myLevelKey,
myReference,
myUsingGraph),
myObjectUUIDs))
{
yield return _Vertex;
}
yield break;
}
/// <summary>
/// Extracts the attribute from <paramref name="myDBObject"/>.
/// </summary>
/// <param name="myType"></param>
/// <param name="myTypeAttribute"></param>
/// <param name="myDBObject"></param>
/// <param name="myLevelKey"></param>
/// <returns></returns>
private Object GetAttributeValue(GraphDBType myType, TypeAttribute myTypeAttribute, DBObjectStream myDBObject, EdgeList myLevelKey)
{
if (myTypeAttribute.TypeCharacteristics.IsBackwardEdge)
{
#region IsBackwardEdge
EdgeKey edgeKey = myTypeAttribute.BackwardEdgeDefinition;
var contBackwardExcept = myDBObject.ContainsBackwardEdge(edgeKey, _DBContext, _DBContext.DBObjectCache, myType);
if (contBackwardExcept.Failed())
throw new GraphDBException(contBackwardExcept.IErrors);
if (contBackwardExcept.Value)
{
var getBackwardExcept = myDBObject.GetBackwardEdges(edgeKey, _DBContext, _DBContext.DBObjectCache, myTypeAttribute.GetDBType(_DBContext.DBTypeManager));
if (getBackwardExcept.Failed())
throw new GraphDBException(getBackwardExcept.IErrors);
return getBackwardExcept.Value;
}
#endregion
}
else if (myDBObject.HasAttribute(myTypeAttribute.UUID, myType))
{
#region ELSE (!IsBackwardEdge)
return myDBObject.GetAttribute(myTypeAttribute.UUID, myType, _DBContext);
#endregion
}
return null;
}
/// <summary>
/// Resolve a AListReferenceEdgeType to a List of Vertex. This will resolve each edge target using the 'GetAllAttributesFromDBO' method
/// </summary>
/// <param name="typeOfAttribute"></param>
/// <param name="myVertices"></param>
/// <param name="myDepth"></param>
/// <param name="currentLvl"></param>
/// <returns></returns>
internal IEnumerable<Vertex> GetVertices(GraphDBType myTypeOfAttribute, ASetOfReferencesEdgeType myVertices, Int64 myDepth, EdgeList myLevelKey, String myReference, Boolean myUsingGraph)
{
foreach (var _Vertex in myVertices.GetVertices(_ObjectUUID => LoadAndResolveVertex(_ObjectUUID,
myTypeOfAttribute,
myDepth,
myLevelKey,
myReference,
myUsingGraph)))
{
if (_Vertex != null)
{
yield return _Vertex;
}
}
yield break;
}
/// <summary>
/// This is the main function. It will check all selections on this type and will create the readouts
/// </summary>
/// <param name="dbos"></param>
/// <param name="myResolutionDepth"></param>
/// <param name="myTypeNode"></param>
/// <param name="myLevelKey"></param>
/// <param name="myUsingGraph">True if for all selects the graph will be asked for DBOs</param>
/// <param name="myDBObjectCache"></param>
/// <param name="mySessionToken"></param>
/// <returns></returns>
private IEnumerable<Vertex> ExamineVertex(long myResolutionDepth, String myReference, GraphDBType myReferencedDBType, EdgeList myLevelKey, bool myUsingGraph)
{
#region Get all selections and aggregates for this reference, type and level
var _Selections = getAttributeSelections(myReference, myReferencedDBType, myLevelKey);
var aggregates = getAttributeAggregates(myReference, myReferencedDBType, myLevelKey);
#endregion
if (
(_Selections.IsNotNullOrEmpty() && _Selections.All(s => s.IsReferenceToSkip(myLevelKey)) && aggregates.IsNotNullOrEmpty() && aggregates.All(a => a.IsReferenceToSkip(myLevelKey)))
|| (_Selections.IsNotNullOrEmpty() && _Selections.All(s => s.IsReferenceToSkip(myLevelKey)) && aggregates.IsNullOrEmpty())
)
{
#region If there are only references in this level, we will skip this level (and add the attribute as placeholder) and step to the next one
var Attributes = new Dictionary<String, Object>();
foreach (var _Selection in _Selections)
{
var edgeKey = new EdgeKey(_Selection.Element.RelatedGraphDBTypeUUID, _Selection.Element.UUID);
Attributes.Add(_Selection.Alias, new Edge(null,
ExamineVertex(myResolutionDepth, myReference, myReferencedDBType, myLevelKey + edgeKey, myUsingGraph),
_Selection.Element.GetDBType(_DBContext.DBTypeManager).Name));
}
yield return new Vertex(Attributes);
#endregion
}
else
{
#region Otherwise load all dbos until this level and return them
#region Get dbos enumerable of the first level - either from ExpressionGraph or via index
IEnumerable<Exceptional<DBObjectStream>> dbos;
if (myUsingGraph)
{
dbos = _ExpressionGraph.Select(new LevelKey(myLevelKey.Edges, _DBContext.DBTypeManager), null, true);
}
else // using GUID index
{
dbos = _DBContext.DBObjectCache.SelectDBObjectsForLevelKey(new LevelKey(myLevelKey.Edges, _DBContext.DBTypeManager), _DBContext);
}
#endregion
if (aggregates.IsNotNullOrEmpty())
{
foreach (var val in ExamineDBO_Aggregates(dbos, aggregates, _Selections, myReferencedDBType, myUsingGraph))
{
if (val != null)
{
yield return val;
}
}
}
else if (_Groupings.IsNotNullOrEmpty())
{
foreach (var val in ExamineDBO_Groupings(dbos, _Selections, myReferencedDBType))
{
if (val != null)
{
yield return val;
}
}
}
else if (!_Selections.IsNullOrEmpty())
{
Boolean isRefTypeVertex = myReferencedDBType.UUID.Equals(DBVertex.UUID);
GraphDBType refType;
#region Usually attribute selections
foreach (var aDBObject in dbos)
{
if (aDBObject.Failed())
{
// since we are in an yield we can do nothing else than throw a exception
throw new GraphDBException(aDBObject.IErrors);
}
#region Create a readoutObject for this DBO and yield it: on failure throw an exception
if (isRefTypeVertex)
{
refType = _DBContext.DBTypeManager.GetTypeByUUID(aDBObject.Value.TypeUUID);
}
else
{
refType = myReferencedDBType;
}
var Attributes = GetAllSelectedAttributesFromVertex(aDBObject.Value, refType, myResolutionDepth, myLevelKey, myReference, myUsingGraph);
if (Attributes.IsNotNullOrEmpty())
{
yield return new Vertex(Attributes);
}
//else
//{
// // we found no attributes, so we return null because currently we do not want to add empty attribute readouts
// yield return (Vertex)null;
//}
#endregion
}
#endregion
}
#endregion
}
}
private Object ResolveAggregateResult(FuncParameter aggrResult, Int64 myDepth)
{
#region Add aggregate return value to attributes
if (aggrResult.Value is IReferenceEdge)
{
#region Reference edge
//myUsingGraph = false;
//Depth = GetDepth(myDepth, minDepth, myDBType);
var Depth = myDepth;
if (myDepth > 0)
{
var myLevelKey = new EdgeList(new EdgeKey(aggrResult.TypeAttribute));
#region Resolve DBReferences
return ResolveAttributeValue(aggrResult.TypeAttribute, aggrResult.Value, Depth, myLevelKey, null, null, false);
#endregion
}
else
{
GraphDBType type;
if (aggrResult.TypeAttribute.IsBackwardEdge)
{
type = _DBContext.DBTypeManager.GetTypeByUUID(aggrResult.TypeAttribute.BackwardEdgeDefinition.TypeUUID);
}
else
{
type = aggrResult.TypeAttribute.GetDBType(_DBContext.DBTypeManager);
}
return GetNotResolvedReferenceEdgeAttributeValue(aggrResult.Value as IReferenceEdge, type, _DBContext);
}
#endregion
}
else
{
return aggrResult.Value.GetReadoutValue();
}
#endregion
}