public override Exceptional<FuncParameter> ExecFunc(DBContext dbContext, params FuncParameter[] myParams)
{
Exceptional<FuncParameter> result = new Exceptional<FuncParameter>();
if (CallingObject is DBUInt64)
{
try
{
var dtValue = new DateTime(System.Convert.ToInt64(((DBUInt64)CallingObject).Value));
result.Value = new FuncParameter(new DBInt64(dtValue.ToUnixTimeStamp()));
}
catch (Exception e)
{
return new Exceptional<FuncParameter>(new Error_UnknownDBError(e.Message));
}
return result;
}
else if (CallingObject is DBDateTime)
{
result.Value = new FuncParameter(new DBInt64(((DateTime)((DBDateTime)CallingObject).Value).ToUnixTimeStamp()));
}
else
{
Debug.Assert(false); // this should never happen due to the ValidateWorkingBase method
return new Exceptional<FuncParameter>(new Error_FunctionParameterTypeMismatch(typeof(DBDateTime), CallingObject.GetType()));
}
return result;
}
public override Exceptional<FuncParameter> ExecFunc(DBContext dbContext, params FuncParameter[] myParams)
{
var pResult = new Exceptional<FuncParameter>();
// The edge we starting of (Friends)
var typeAttribute = CallingAttribute;
// Get the source Objects from the CallingObject, if this is not a reference this function is used in a wrong context and return a error
IEnumerable<ObjectUUID> sourceDBOs = null;
if (CallingObject is IReferenceEdge)
{
sourceDBOs = (CallingObject as ASetOfReferencesEdgeType).GetAllReferenceIDs();
}
else
{
throw new GraphDBException(new Error_InvalidEdgeType(CallingAttribute.EdgeType.GetType(), typeof(ASetOfReferencesEdgeType), typeof(ASingleReferenceEdgeType)));
}
// The destination DBObjects which are passed with the first parameter
var destDBOs = (myParams[0].Value as DBEdge).GetDBObjects();
if (destDBOs == null)
{
throw new GraphDBException(new Error_InvalidEdgeType(CallingAttribute.EdgeType.GetType(), typeof(ASetOfReferencesEdgeType), typeof(ASingleReferenceEdgeType)));
}
// The depth which is passed as the second parameter
Int64 mayDepth = (myParams[1].Value as DBInt64).GetValue();
// Call your own implementation of a path function and return the result, in this case it is a list of DB object (uuids)
var resultOfPathFunction = new List<ObjectUUID>();
pResult.Value = new FuncParameter(new EdgeTypeSetOfReferences(resultOfPathFunction, CallingAttribute.DBTypeUUID));
return pResult;
}
public override Exceptional<FuncParameter> ExecFunc(DBContext dbContext, params FuncParameter[] myParams)
{
var pResult = new Exceptional<FuncParameter>();
ulong numOfEntries = (myParams[0].Value as DBUInt64).GetValue();
var retVal = (IEdgeType)(CallingObject as IListOrSetEdgeType).GetTopAsEdge(numOfEntries);
pResult.Value = new FuncParameter(retVal, CallingAttribute);
return pResult;
}
public override Exceptional<FuncParameter> ExecFunc(DBContext dbContext, params FuncParameter[] myParams)
{
var result = new Exceptional<FuncParameter>();
if (!(CallingObject is EdgeTypeWeighted))
{
return result.PushIErrorT(new Error_FunctionParameterTypeMismatch(typeof(EdgeTypeWeighted), CallingObject.GetType()));
}
result.Value = new FuncParameter(((EdgeTypeWeighted)CallingObject).GetMaxWeight());
return result;
}
/// <summary>
/// Execute the removal of attribute indices
/// <seealso cref=" AAlterTypeCommand"/>
/// </summary>
public override Exceptional Execute(DBContext myDBContext, GraphDBType myGraphDBType)
{
var retExceptional = new Exceptional();
foreach (var index in _IdxDropList)
{
var dropIdxExcept = myGraphDBType.RemoveIndex(index.Key, index.Value, myDBContext);
if (!dropIdxExcept.Success())
{
retExceptional.PushIExceptional(dropIdxExcept);
}
}
return retExceptional;
}
public override Exceptional<FuncParameter> ExecFunc(DBContext dbContext, params FuncParameter[] myParams)
{
Exceptional<FuncParameter> result = new Exceptional<FuncParameter>();
if (CallingObject != null)
{
if (CallingObject is DBInt64)
{
result.Value = new FuncParameter(new DBDateTime(((Int64)((DBInt64)CallingObject).Value).FromUnixTimeStamp()));
}
else
{
result = new Exceptional<FuncParameter>(new Error_FunctionParameterTypeMismatch(typeof(DBInt64), CallingObject.GetType()));
}
}
else
return new Exceptional<FuncParameter>(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
return result;
}
/// <summary>
/// Executes the removal of certain myAttributes.
/// <seealso cref=" AAlterTypeCommand"/>
/// </summary>
public override Exceptional Execute(DBContext myDBContext, GraphDBType myGraphDBType)
{
Exceptional result = new Exceptional();
foreach (String aAttributeName in _ListOfAttributes)
{
var attr = myGraphDBType.GetTypeAttributeByName(aAttributeName);
if (attr != null)
{
var idxs = new List<Indices.AAttributeIndex>(myGraphDBType.GetAttributeIndices(myDBContext, attr.UUID));
foreach (var item in idxs)
{
var remIdxResult = myGraphDBType.RemoveIndex(item.IndexName, item.IndexEdition, myDBContext);
if (remIdxResult.Failed())
{
result.PushIExceptional(remIdxResult);
}
}
}
else
{
result.PushIError(new Error_AttributeIsNotDefined(aAttributeName));
return result;
}
//Hack: remove myAttributes in DBObjects
var aTempResult = myDBContext.DBTypeManager.RemoveAttributeFromType(myGraphDBType.Name, aAttributeName, myDBContext.DBTypeManager);
if (aTempResult.Failed())
{
result.PushIExceptional(aTempResult);
return result;
}
}
return result;
}
public override Exceptional<FuncParameter> ExecFunc(DBContext dbContext, params FuncParameter[] myParams)
{
var result = new Exceptional<FuncParameter>();
if (!(CallingObject is ADBBaseObject))
{
return new Exceptional<FuncParameter>(new Errors.Error_InvalidFunctionParameter("CallingObject", "ADBBaseObject", CallingObject.GetType()));
}
var pos = (myParams[0].Value as DBInt32).GetValue();
StringBuilder resString = new StringBuilder((CallingObject as ADBBaseObject).Value.ToString().Substring(0, pos));
foreach (FuncParameter fp in myParams.Skip(1))
{
resString.Append((fp.Value as DBString).GetValue());
}
resString.Append((CallingObject as ADBBaseObject).Value.ToString().Substring(pos));
result = new Exceptional<FuncParameter>(new FuncParameter(new DBString(resString.ToString())));
return result;
}
public override Exceptional<FuncParameter> ExecFunc(DBContext dbContext, params FuncParameter[] myParams)
{
var pResult = new Exceptional<FuncParameter>();
if (CallingObject is IListOrSetEdgeType)
{
pResult.Value = new FuncParameter(new DBUInt64(((IListOrSetEdgeType)CallingObject).Count()));
}
else if (CallingObject is ASingleReferenceEdgeType)
{
pResult.Value = new FuncParameter(new DBUInt64(1));
}
else if (CallingObject is IEnumerable<ObjectUUID>)
{
pResult.Value = new FuncParameter(new DBUInt64((CallingObject as IEnumerable<ObjectUUID>).LongCount()));
}
else
{
return pResult.PushIErrorT(new Error_FunctionParameterTypeMismatch(typeof(IEdgeType), CallingObject.GetType()));
}
return pResult;
}
/// <summary>
/// Removes an attribute of the given type.
/// </summary>
/// <param name="targetClass">The target type.</param>
/// <param name="myAttributeName">The attribute name, referencing the deprecated attribute.</param>
/// <returns>True, if the attribute was successfully removed. Else, false.(it didnt exist)</returns>
public Exceptional<ResultType> RemoveAttributeFromType(String targetClass, String attributeName, DBTypeManager myTypeManager)
{
#region INPUT EXCEPTIONS
if (String.IsNullOrEmpty(targetClass))
return new Exceptional<ResultType>(new Error_ArgumentNullOrEmpty(targetClass));
if (String.IsNullOrEmpty(attributeName))
return new Exceptional<ResultType>(new Error_ArgumentNullOrEmpty(attributeName));
#endregion
#region Data
GraphDBType aType = GetTypeByName(targetClass);
#endregion
#region check if type exists
if (aType == null)
return new Exceptional<ResultType>(new Error_TypeDoesNotExist(targetClass));
#endregion
TypeAttribute Attribute = aType.GetTypeAttributeByName(attributeName);
Exceptional<ResultType> retVal = null;
if (Attribute != null)
{
//Check for other attributes that reference this one (i.e. as BackwardEdge)
var referncedBy = GetBackwardReferencesForAttribute(Attribute);
if (referncedBy.Count > 0)
{
return new Exceptional<ResultType>(new Error_DropOfAttributeNotAllowed(Attribute.GetRelatedType(this).Name, attributeName, referncedBy.ToDictionary(key => key, value => value.GetRelatedType(this))));
}
if (Attribute.GetRelatedType(this) != aType)
{
return new Exceptional<ResultType>(new Error_DropOfDerivedAttributeIsNotAllowed(Attribute.GetRelatedType(this).Name, attributeName));
}
retVal = RemoveAttributeOfType(aType, Attribute.UUID);
}
else
{
retVal = new Exceptional<ResultType>(new Error_AttributeIsNotDefined(attributeName));
}
return retVal;
}
/// <summary>
/// Internal method for loading a DBObject from GraphFS.
/// </summary>
/// <param name="myType">The Type of the DBObjects as GraphType.</param>
/// <param name="myObjectUUID">The UUID of the DBObject.</param>
/// <returns>An DBObject</returns>
private Exceptional<DBObjectStream> LoadDBObjectInternal(GraphDBType myType, ObjectUUID myObjectUUID)
{
var tempResult = _DBObjectManager.LoadDBObject(myType, myObjectUUID);
#region Try all subTypes - as long as the Symlink alternativ does not work
if (tempResult.Failed())
{
var exceptional = new Exceptional<DBObjectStream>(tempResult);
#region Try sub types
foreach (var type in _typeManager.GetAllSubtypes(myType, false))
{
tempResult = LoadDBObjectInternal(type, myObjectUUID);
if (tempResult.Success())
break;
else
exceptional = new Exceptional<DBObjectStream>(tempResult);
}
#endregion
if (tempResult.Failed())
return exceptional;
}
#endregion
return tempResult;
}
private bool IsValidDBObjectForLevelKey(Exceptional<DBObjectStream> aDBO, LevelKey myLevelKey, GraphDBType typeOfDBO)
{
if (myLevelKey.Level == 0)
{
return true;
}
else
{
Boolean isValidDBO = false;
EdgeKey backwardEdgeKey = myLevelKey.LastEdge;
TypeAttribute currentAttribute = _typeManager.GetTypeByUUID(backwardEdgeKey.TypeUUID).GetTypeAttributeByUUID(backwardEdgeKey.AttrUUID);
IEnumerable<Exceptional<DBObjectStream>> dbobjects = null;
GraphDBType typeOfBackwardDBOs = null;
if (currentAttribute.IsBackwardEdge)
{
backwardEdgeKey = currentAttribute.BackwardEdgeDefinition;
currentAttribute = _typeManager.GetTypeByUUID(backwardEdgeKey.TypeUUID).GetTypeAttributeByUUID(backwardEdgeKey.AttrUUID);
typeOfBackwardDBOs = currentAttribute.GetDBType(_typeManager);
if (aDBO.Value.HasAttribute(backwardEdgeKey.AttrUUID, typeOfDBO))
{
dbobjects = GetReferenceObjects(aDBO.Value, currentAttribute, typeOfDBO, _typeManager);
}
}
else
{
BackwardEdgeStream beStreamOfDBO = LoadDBBackwardEdgeStream(typeOfDBO, aDBO.Value.ObjectUUID).Value;
typeOfBackwardDBOs = _typeManager.GetTypeByUUID(backwardEdgeKey.TypeUUID);
if (beStreamOfDBO.ContainsBackwardEdge(backwardEdgeKey))
{
dbobjects = LoadListOfDBObjectStreams(typeOfBackwardDBOs, beStreamOfDBO.GetBackwardEdgeUUIDs(backwardEdgeKey));
}
}
if (dbobjects != null)
{
LevelKey myLevelKeyPred = myLevelKey.GetPredecessorLevel(_typeManager);
foreach (var aBackwardDBO in dbobjects)
{
if (aBackwardDBO.Success())
{
if (IsValidDBObjectForLevelKey(aBackwardDBO, myLevelKeyPred, typeOfBackwardDBOs))
{
isValidDBO = true;
break;
}
}
}
}
else
{
return false;
}
return isValidDBO;
}
}
internal Exceptional SetBackwardEdges(Dictionary<AttributeUUID, IObject> userdefinedAttributes, ObjectUUID reference)
{
var returnVal = new Exceptional();
#region process attributes
foreach (var aUserDefinedAttribute in userdefinedAttributes)
{
#region Data
GraphDBType typeOFAttribute = null;
TypeAttribute attributesOfType = null;
#endregion
#region get GraphType of Attribute
//attributesOfType = _graphDBType.Attributes[aUserDefinedAttribute.Key];
attributesOfType = _graphDBType.GetTypeAttributeByUUID(aUserDefinedAttribute.Key);
typeOFAttribute = _dbContext.DBTypeManager.GetTypeByUUID(attributesOfType.DBTypeUUID);
#endregion
/* The DBO independent version */
var beEdge = new EdgeKey(_graphDBType.UUID, attributesOfType.UUID);
var runMT = DBConstants.RunMT;
runMT = false;
if (runMT)
{
#region The parallel version
/**/
/* The parallel version */
Parallel.ForEach(((IReferenceEdge)aUserDefinedAttribute.Value).GetAllReferenceIDs(), (uuid) =>
{
var addExcept = _dbContext.DBObjectManager.AddBackwardEdge(uuid, attributesOfType.DBTypeUUID, beEdge, reference);
if (!addExcept.Success())
{
returnVal.PushIExceptional(addExcept);
}
});
if (!returnVal.Success())
{
return returnVal;
}
/**/
#endregion
}
else
{
#region Single thread
foreach (var uuid in ((IReferenceEdge)aUserDefinedAttribute.Value).GetAllReferenceIDs())
{
var addExcept = _dbContext.DBObjectManager.AddBackwardEdge(uuid, attributesOfType.DBTypeUUID, beEdge, reference);
if (addExcept.Failed())
{
return new Exceptional(addExcept);
}
}
#endregion
}
}
#endregion
return Exceptional.OK;
}
private Exceptional AddMandatoryAttributes(DBContext myDBContext, GraphDBType myGraphDBType, ManipulationAttributes myManipulationAttributes)
{
Boolean mandatoryDefaults = (Boolean)myDBContext.DBSettingsManager.GetSettingValue((new SettingDefaultsOnMandatory()).ID, myDBContext, TypesSettingScope.TYPE, myGraphDBType).Value.Value;
TypeAttribute typeAttr = null;
GraphDBType typeOfAttr = null;
var typeMandatoryAttribs = myGraphDBType.GetMandatoryAttributesUUIDs(myDBContext.DBTypeManager);
if ((myManipulationAttributes.MandatoryAttributes.Count < typeMandatoryAttribs.Count()) && !mandatoryDefaults)
return new Exceptional(new Error_MandatoryConstraintViolation(myGraphDBType.Name));
foreach (var attrib in typeMandatoryAttribs)
{
if (!myManipulationAttributes.MandatoryAttributes.Contains(attrib))
{
//if we have mandatory attributes in _graphDBType but not in the current statement and USE_DEFAULTS_ON_MANDATORY is true then do this
if (mandatoryDefaults)
{
typeAttr = myGraphDBType.GetTypeAttributeByUUID(attrib);
if (typeAttr == null)
return new Exceptional(new Error_AttributeIsNotDefined(myGraphDBType.Name, typeAttr.Name));
typeOfAttr = myDBContext.DBTypeManager.GetTypeByUUID(typeAttr.DBTypeUUID);
IObject defaultValue = typeAttr.DefaultValue;
if (defaultValue == null)
defaultValue = typeAttr.GetDefaultValue(myDBContext);
myManipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(typeAttr, typeOfAttr), defaultValue);
}
else
{
return new Exceptional(new Error_MandatoryConstraintViolation("Attribute \"" + myGraphDBType.GetTypeAttributeByUUID(attrib).Name + "\" of Type \"" + myGraphDBType.Name + "\" is mandatory."));
}
}
}
return Exceptional.OK;
}
private Exceptional<Boolean> DeleteObjectReferences(ObjectUUID myObjectUUID, BackwardEdgeStream myObjectBackwardEdges)
{
foreach (var item in myObjectBackwardEdges)
{
var type = _dbContext.DBTypeManager.GetTypeByUUID(item.Key.TypeUUID);
if (type == null)
{
return new Exceptional<Boolean>(new Error_TypeDoesNotExist(""));
}
foreach (var objID in item.Value.GetAllEdgeDestinations(_dbContext.DBObjectCache))
{
if (objID.Failed())
{
return new Exceptional<Boolean>(objID);
}
var attr = objID.Value.GetAttribute(item.Key.AttrUUID);
if (attr is IReferenceEdge)
{
var removeResult = ((IReferenceEdge)attr).RemoveUUID(myObjectUUID);
if (removeResult)
{
#region Sucessfully removed the single edge ref - so remove the attribute
if (attr is ASingleReferenceEdgeType)
{
objID.Value.RemoveAttribute(item.Key.AttrUUID);
}
#endregion
}
else
{
return new Exceptional<bool>(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
}
var flushExcept = _dbContext.DBObjectManager.FlushDBObject(objID.Value);
if (!flushExcept.Success())
return new Exceptional<bool>(flushExcept.IErrors.First());
}
}
return new Exceptional<bool>(true);
}
private Dictionary<TypeAndAttributeDefinition, IObject> ExtractDefinedAttributes(Dictionary<string, Tuple<TypeAttribute, IObject>> attrsForResult, DBTypeManager myTypeManager)
{
return attrsForResult.Where(item => !(item.Value.Item1 is UndefinedTypeAttribute)).ToDictionary(key => new TypeAndAttributeDefinition(key.Value.Item1, key.Value.Item1.GetDBType(myTypeManager)), value => value.Value.Item2);
}
private Dictionary<string, IObject> ExtractUndefindedAttributes(Dictionary<string, Tuple<TypeAttribute, IObject>> attrsForResult)
{
return attrsForResult.Where(item => (item.Value.Item1 is UndefinedTypeAttribute)).ToDictionary(key => key.Key, value => value.Value.Item2);
}
private AttributeUUID GetAttributesToCheckForUnique(AAttributeAssignOrUpdateOrRemove myAAttributeAssignOrUpdateOrRemove)
{
if (myAAttributeAssignOrUpdateOrRemove is AAttributeRemove)
return null;
if (myAAttributeAssignOrUpdateOrRemove.AttributeIDChain.IsUndefinedAttribute)
{
return null;
}
if (myAAttributeAssignOrUpdateOrRemove is AAttributeAssignOrUpdate)
{
return ((AAttributeAssignOrUpdate)myAAttributeAssignOrUpdateOrRemove).AttributeIDChain.LastAttribute.UUID;
}
if (myAAttributeAssignOrUpdateOrRemove is AttributeAssignOrUpdateList)
return ((AttributeAssignOrUpdateList)myAAttributeAssignOrUpdateOrRemove).AttributeIDChain.LastAttribute.UUID;
throw new GraphDBException(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
/// <summary>
/// Create a readout based on the passed <paramref name="attributes"/>, <paramref name="undefinedAttributes"/>, <paramref name="specialTypeAttributes"/> which are all optional
/// </summary>
/// <param name="myDBObjectStreamExceptional"></param>
/// <param name="attributes"></param>
/// <param name="undefinedAttributes"></param>
/// <param name="specialTypeAttributes"></param>
/// <returns></returns>
private Exceptional<Vertex> GetManipulationResultSet(Exceptional<DBObjectStream> myDBObjectStreamExceptional, Dictionary<TypeAndAttributeDefinition, IObject> attributes = null, Dictionary<String, IObject> undefinedAttributes = null, Dictionary<ASpecialTypeAttribute, Object> specialTypeAttributes = null)
{
Vertex _Vertex = null;
#region Return inserted attributes
#region attributes
if (!attributes.IsNullOrEmpty())
{
_Vertex = new Vertex(attributes.ToDictionary(key => key.Key.Definition.Name, value => value.Value.GetReadoutValue()));
}
else
{
_Vertex = new Vertex();
}
#endregion
#region UndefinedAttributes
if (!undefinedAttributes.IsNullOrEmpty())
{
foreach (var undefAttr in undefinedAttributes)
{
_Vertex.AddAttribute(undefAttr.Key, undefAttr.Value.GetReadoutValue());
}
}
#endregion
#region SpecialTypeAttributes
if (!specialTypeAttributes.IsNullOrEmpty())
{
foreach (var specAttr in specialTypeAttributes)
{
_Vertex.AddAttribute(specAttr.Key.Name, specAttr.Value);
}
}
#endregion
#region UUID
if (!_Vertex.HasAttribute(SpecialTypeAttribute_UUID.AttributeName))
{
var extractedValue = new SpecialTypeAttribute_UUID().ExtractValue(myDBObjectStreamExceptional.Value, _graphDBType, _dbContext);
if (extractedValue.Failed())
{
return new Exceptional<Vertex>(extractedValue);
}
_Vertex.AddAttribute(SpecialTypeAttribute_UUID.AttributeName, extractedValue.Value.GetReadoutValue());
}
#endregion
#region REVISION
if (!_Vertex.HasAttribute(SpecialTypeAttribute_REVISION.AttributeName)) // If it was updated by SpecialTypeAttributes we do not need to add them again
{
var extractedValue = new SpecialTypeAttribute_REVISION().ExtractValue(myDBObjectStreamExceptional.Value, _graphDBType, _dbContext);
if (extractedValue.Failed())
{
return new Exceptional<Vertex>(extractedValue);
}
_Vertex.AddAttribute(SpecialTypeAttribute_REVISION.AttributeName, extractedValue.Value.GetReadoutValue());
}
#endregion
#endregion
return new Exceptional<Vertex>(_Vertex);
}
/// <summary>
/// Get attribute assignments for new DBObjects.
/// </summary>
/// <param name="myAttributeAssigns">The interesting ParseTreeNode.</param>
/// <param name="typeManager">The TypeManager of the GraphDB.</param>
/// <returns>A Dictionary of AttributeAssignments</returns>
private Exceptional<ManipulationAttributes> GetRecursiveAttributes(List<AAttributeAssignOrUpdate> myAttributeAssigns, DBContext myDBContext, GraphDBType myGraphDBType)
{
#region Data
var manipulationAttributes = new ManipulationAttributes();
var resultExcept = new Exceptional<ManipulationAttributes>();
if (myAttributeAssigns == null)
{
return new Exceptional<ManipulationAttributes>(manipulationAttributes);
}
TypeAttribute attr;
ADBBaseObject typedAttributeValue;
BasicType correspondingCSharpType;
Warning_UndefinedAttribute undefAttrWarning = null;
var typeMandatoryAttribs = myGraphDBType.GetMandatoryAttributesUUIDs(myDBContext.DBTypeManager);
var setExcept = myDBContext.DBSettingsManager.GetSetting(SettingUndefAttrBehaviour.UUID, myDBContext, TypesSettingScope.DB);
if (!setExcept.Success())
{
return new Exceptional<ManipulationAttributes>(setExcept);
}
var undefAttrBehave = (SettingUndefAttrBehaviour)setExcept.Value;
#endregion
#region get Data
#region proceed list
foreach (var aAttributeAssign in myAttributeAssigns)
{
var validateResult = aAttributeAssign.AttributeIDChain.Validate(myDBContext, true);
if (validateResult.Failed())
{
return new Exceptional<ManipulationAttributes>(validateResult);
}
#region Undefined attributes - Refactor and add undefined logic into defined attribute AssignsOrUpdate
System.Diagnostics.Debug.Assert(aAttributeAssign.AttributeIDChain != null);
//in this case we have an undefined attribute
if (aAttributeAssign.AttributeIDChain.IsUndefinedAttribute)
{
var UndefAttrName = aAttributeAssign.AttributeIDChain.UndefinedAttribute;
switch (undefAttrBehave.Behaviour)
{
case UndefAttributeBehaviour.disallow:
return new Exceptional<ManipulationAttributes>(new Error_UndefinedAttributes());
case UndefAttributeBehaviour.warn:
resultExcept.PushIWarning(new Warning_UndefinedAttribute(aAttributeAssign.AttributeIDChain));
break;
}
if (aAttributeAssign is AttributeAssignOrUpdateList)
{
#region AttributeAssignCollection
var colDefinition = (aAttributeAssign as AttributeAssignOrUpdateList).CollectionDefinition;
EdgeTypeListOfBaseObjects valueList = new EdgeTypeListOfBaseObjects();
foreach (var tuple in colDefinition.TupleDefinition)
{
if (tuple.TypeOfValue == BasicType.Unknown)
valueList.Add((tuple.Value as ValueDefinition).Value);
else if (tuple.Value is ValueDefinition)
valueList.Add((tuple.Value as ValueDefinition).Value);
else
return new Exceptional<ManipulationAttributes>(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
if (colDefinition.CollectionType == CollectionType.Set)
valueList.UnionWith(valueList);
manipulationAttributes.UndefinedAttributes.Add(UndefAttrName, valueList);
var undefAttr = new UndefinedAttributeDefinition() { AttributeName = UndefAttrName, AttributeValue = valueList };
var undefAttrAssign = new AttributeAssignOrUpdateUndefined((aAttributeAssign as AttributeAssignOrUpdateList).AttributeIDChain, undefAttr);
manipulationAttributes.AttributeToUpdateOrAssign.Add(undefAttrAssign);
#endregion
}
else if (aAttributeAssign is AttributeAssignOrUpdateValue)
{
#region AttributeAssignValue
var value = GraphDBTypeMapper.GetBaseObjectFromCSharpType((aAttributeAssign as AttributeAssignOrUpdateValue).Value);
manipulationAttributes.UndefinedAttributes.Add(UndefAttrName, value);
var undefAttr = new UndefinedAttributeDefinition() { AttributeName = UndefAttrName, AttributeValue = value };
var undefAttrAssign = new AttributeAssignOrUpdateUndefined((aAttributeAssign as AttributeAssignOrUpdateValue).AttributeIDChain, undefAttr);
manipulationAttributes.AttributeToUpdateOrAssign.Add(undefAttrAssign);
#endregion
}
else if (aAttributeAssign is AttributeAssignOrUpdateSetRef)
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidReferenceAssignmentOfUndefAttr());
}
else
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidUndefinedAttributeName());
}
continue;
}
#endregion
attr = aAttributeAssign.AttributeIDChain.LastAttribute;
manipulationAttributes.AttributeToUpdateOrAssign.Add(aAttributeAssign);
#region checks
if (aAttributeAssign.AttributeIDChain.LastType != myGraphDBType)
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidAttribute(aAttributeAssign.AttributeIDChain.ToString()));
}
if (attr.GetDBType(myDBContext.DBTypeManager).IsBackwardEdge)
{
return new Exceptional<ManipulationAttributes>(new Error_Logic("Adding values to BackwardEdges Attributes are not allowed! (" + attr.Name + ") is an BackwardEdge Attribute of GraphType \"" + myGraphDBType.Name + "\"."));
}
#endregion
#region SpecialTypeAttribute
if (attr is ASpecialTypeAttribute)
{
if (!(aAttributeAssign is AttributeAssignOrUpdateValue))
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidAttributeValue((attr as ASpecialTypeAttribute).Name, aAttributeAssign.ToString()));
}
manipulationAttributes.SpecialTypeAttributes.Add((attr as ASpecialTypeAttribute), (aAttributeAssign as AttributeAssignOrUpdateValue).Value);
continue;
}
#endregion
#region check & add
if (aAttributeAssign.AttributeIDChain.Edges.Count > 1)
{
//in case of those statements: INSERT INTO Flower VALUES (Colors.Name = 'red')
//Colors.Name is an IDNode with 2 Edges. This is not possible.
return new Exceptional<ManipulationAttributes>(new Error_Logic("Invalid attribute assignment : " + aAttributeAssign.AttributeIDChain.ToString() + " = " + aAttributeAssign));
}
if (aAttributeAssign is AttributeAssignOrUpdateList)
{
#region SetOfDBObjects
#region Check, whether this is valid for SetOfDBObjects
if (attr.KindOfType != KindsOfType.SetOfReferences)
{
if (attr.KindOfType != KindsOfType.ListOfNoneReferences)
{
if (attr.KindOfType != KindsOfType.SetOfNoneReferences)
{
return new Exceptional<ManipulationAttributes>(new Error_ReferenceAssignmentExpected(attr));//"Please use SETREF keyword instead of REF/REFERENCE or LISTOF."));
}
}
}
#endregion
#region list stuff
#region process tuple
#region process as list
var collectionDefinition = ((AttributeAssignOrUpdateList)aAttributeAssign).CollectionDefinition;
var dbType = attr.GetDBType(myDBContext.DBTypeManager);
if (dbType.IsUserDefined)
{
#region List of references
var uuids = collectionDefinition.GetEdge(attr, dbType, myDBContext);
if (uuids.Failed())
{
return new Exceptional<ManipulationAttributes>(uuids);
}
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, dbType), uuids.Value);
if (typeMandatoryAttribs.Contains(attr.UUID))
{
manipulationAttributes.MandatoryAttributes.Add(attr.UUID);
}
#endregion
}
else
{
#region List of ADBBaseObjects (Integer, String, etc)
var edge = (aAttributeAssign as AttributeAssignOrUpdateList).GetBasicList(myDBContext);
if (edge.Failed())
{
return new Exceptional<ManipulationAttributes>(edge);
}
// If the collection was declared as a SETOF insert
if (collectionDefinition.CollectionType == CollectionType.Set)
edge.Value.Distinction();
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, attr.GetDBType(myDBContext.DBTypeManager)), edge.Value);
if (typeMandatoryAttribs.Contains(attr.UUID))
{
manipulationAttributes.MandatoryAttributes.Add(attr.UUID);
}
#endregion
}
#endregion
#endregion
#endregion
#endregion
}
else if (aAttributeAssign is AttributeAssignOrUpdateSetRef)
{
#region reference
var aSetRefNode = ((AttributeAssignOrUpdateSetRef)aAttributeAssign).SetRefDefinition;
var singleedge = aSetRefNode.GetEdge(attr, myDBContext, attr.GetRelatedType(myDBContext.DBTypeManager));
if (singleedge.Failed())
{
return new Exceptional<ManipulationAttributes>(singleedge);
}
if (attr.GetRelatedType(myDBContext.DBTypeManager).IsUserDefined)
{
//a list which carries elements of userdefined types consists of GUIDS
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, attr.GetDBType(myDBContext.DBTypeManager)), singleedge.Value);
if (typeMandatoryAttribs.Contains(attr.UUID))
{
manipulationAttributes.MandatoryAttributes.Add(attr.UUID);
}
}
else
{
return new Exceptional<ManipulationAttributes>(new Error_UnknownDBError("Reference types cannot be basic types."));
}
#endregion
}
else if (aAttributeAssign is AttributeAssignOrUpdateExpression)
{
#region Expression
(aAttributeAssign as AttributeAssignOrUpdateExpression).BinaryExpressionDefinition.Validate(myDBContext);
var value = (aAttributeAssign as AttributeAssignOrUpdateExpression).BinaryExpressionDefinition.ResultValue;
if (value.Failed())
{
return new Exceptional<ManipulationAttributes>(value.IErrors.First());
}
if (value.Value is ValueDefinition)
{
#region AtomValue
if (attr.KindOfType == KindsOfType.SetOfReferences || attr.KindOfType == KindsOfType.ListOfNoneReferences || attr.KindOfType == KindsOfType.SetOfNoneReferences)
return new Exceptional<ManipulationAttributes>(new Error_InvalidTuple(aAttributeAssign.ToString()));
if (!(value.Value as ValueDefinition).IsDefined)
{
(value.Value as ValueDefinition).ChangeType(attr.GetDBType(myDBContext.DBTypeManager).UUID);
}
var val = (value.Value as ValueDefinition).Value.Value;
correspondingCSharpType = GraphDBTypeMapper.ConvertGraph2CSharp(attr, attr.GetDBType(myDBContext.DBTypeManager));
if (GraphDBTypeMapper.GetEmptyGraphObjectFromType(correspondingCSharpType).IsValidValue(val))
{
typedAttributeValue = GraphDBTypeMapper.GetGraphObjectFromType(correspondingCSharpType, val);
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, attr.GetDBType(myDBContext.DBTypeManager)), typedAttributeValue);
if (typeMandatoryAttribs.Contains(attr.UUID))
manipulationAttributes.MandatoryAttributes.Add(attr.UUID);
}
else
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidAttributeValue(attr.Name, (aAttributeAssign as AttributeAssignOrUpdateValue).Value));
}
#endregion
}
else // TupleValue!
{
#region TupleValue
if (attr.KindOfType != KindsOfType.SetOfReferences)
return new Exceptional<ManipulationAttributes>(new Error_InvalidTuple(aAttributeAssign.ToString()));
if (!(attr.EdgeType is IBaseEdge))
return new Exceptional<ManipulationAttributes>(new Error_InvalidEdgeType(attr.EdgeType.GetType(), typeof(IBaseEdge)));
correspondingCSharpType = GraphDBTypeMapper.ConvertGraph2CSharp(attr, attr.GetDBType(myDBContext.DBTypeManager));
if ((value.Value as TupleDefinition).TypeOfOperatorResult != correspondingCSharpType)
return new Exceptional<ManipulationAttributes>(new Error_DataTypeDoesNotMatch(correspondingCSharpType.ToString(), (value.Value as TupleDefinition).TypeOfOperatorResult.ToString()));
var edge = attr.EdgeType.GetNewInstance() as IBaseEdge;
edge.AddRange((value.Value as TupleDefinition).Select(te => (te.Value as ValueDefinition).Value));
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, attr.GetDBType(myDBContext.DBTypeManager)), edge as IBaseEdge);
#endregion
}
#endregion
}
else if (aAttributeAssign is AttributeAssignOrUpdateValue)
{
#region Simple value
var attrVal = aAttributeAssign as AttributeAssignOrUpdateValue;
if (attr.KindOfType == KindsOfType.ListOfNoneReferences)
return new Exceptional<ManipulationAttributes>(new Error_InvalidTuple(attrVal.ToString()));
if (attr.KindOfType != KindsOfType.SingleNoneReference)
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidAttributeKind(attr.KindOfType, KindsOfType.SingleNoneReference));
}
correspondingCSharpType = GraphDBTypeMapper.ConvertGraph2CSharp(attr, attr.GetDBType(myDBContext.DBTypeManager));
if (GraphDBTypeMapper.GetEmptyGraphObjectFromType(correspondingCSharpType).IsValidValue(attrVal.Value))
{
typedAttributeValue = GraphDBTypeMapper.GetGraphObjectFromType(correspondingCSharpType, attrVal.Value);
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, attr.GetDBType(myDBContext.DBTypeManager)), typedAttributeValue);
if (typeMandatoryAttribs.Contains(attr.UUID))
manipulationAttributes.MandatoryAttributes.Add(attr.UUID);
}
else
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidAttributeValue(attr.Name, attrVal.Value));
}
#endregion
}
else
{
return new Exceptional<ManipulationAttributes>(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
#endregion
}
#endregion
#endregion
resultExcept.Value = manipulationAttributes;
return resultExcept;
}
/// <summary>
/// Inserts into all indices that are affected if a DBObject is updated on a certain attibute
/// </summary>
/// <param name="dBObjectStream"></param>
/// <param name="attributeUUID"></param>
/// <param name="_dbContext"></param>
/// <returns></returns>
private Exceptional InsertDBObjectIntoIndex(DBObjectStream dBObjectStream, AttributeUUID attributeUUID)
{
foreach (var aType in _dbContext.DBTypeManager.GetAllParentTypes(_dbContext.DBTypeManager.GetTypeByUUID(dBObjectStream.TypeUUID), true, false))
{
foreach (var aAttributeIdx in aType.GetAttributeIndices(_dbContext, attributeUUID))
{
var result = aAttributeIdx.Insert(dBObjectStream, aType, _dbContext);
if (result.Failed())
{
return new Exceptional(result);
}
}
}
return new Exceptional();
}
/// <summary>
/// Removes index entries corresponding to a DBObject
/// </summary>
/// <param name="dBObjectStream"></param>
/// <param name="attributeUUID"></param>
/// <param name="_dbContext"></param>
/// <returns></returns>
private Exceptional RemoveDBObjectFromIndex(DBObjectStream dBObjectStream, AttributeUUID attributeUUID)
{
foreach (var aType in _dbContext.DBTypeManager.GetAllParentTypes(_dbContext.DBTypeManager.GetTypeByUUID(dBObjectStream.TypeUUID), true, false))
{
foreach (var aAttributeIdx in aType.GetAttributeIndices(_dbContext, attributeUUID))
{
var result = aAttributeIdx.Remove(dBObjectStream, aType, _dbContext);
if (result.Failed())
{
return new Exceptional(result);
}
}
}
return new Exceptional();
}
private Exceptional RemoveUndefAttrs(IEnumerable<Exceptional<DBObjectStream>> myDBObjStream, List<String> myUndefAttrs)
{
#region delete undefined attributes
foreach (var objects in myDBObjStream)
{
var undefAttrsStream = myUndefAttrs.Where(item => objects.Value.GetUndefinedAttributePayload(_dbContext.DBObjectManager).Value.ContainsKey(item));
foreach (var undefAttr in undefAttrsStream)
{
var removeExcept = _dbContext.DBObjectManager.RemoveUndefinedAttribute(undefAttr, objects.Value);
if (removeExcept.Failed())
return new Exceptional(removeExcept);
}
}
#endregion
return Exceptional.OK;
}
/// <summary>
/// setting the default value for the attribute
/// </summary>
/// <param name="myAttr">the attribute</param>
/// <param name="myDBObjectCache">the object cache</param>
/// <returns>true if the value was changed</returns>
private Exceptional<Boolean> SetDefaultValue(TypeAttribute myAttr, Exceptional<DBObjectStream> myDBO)
{
if (myDBO.Success())
{
IObject defaultValue = myAttr.DefaultValue;
if (defaultValue == null)
defaultValue = myAttr.GetDefaultValue(_dbContext);
var alterExcept = myDBO.Value.AlterAttribute(myAttr.UUID, defaultValue);
if (alterExcept.Failed())
return new Exceptional<Boolean>(alterExcept);
if (!alterExcept.Value)
{
return new Exceptional<bool>(false);
}
}
else
{
return new Exceptional<bool>(false);
}
return new Exceptional<bool>(true);
}
/// <summary>
/// This is the update method which will change some <paramref name="myDBObjects"/> on behalf of the <paramref name="myListOfUpdates"/>
/// </summary>
/// <param name="myDBObjects">Some dbobjects</param>
/// <param name="myListOfUpdates">The list of update tasks (assign, delete, etc)</param>
/// <param name="dbObjectCache"></param>
/// <returns></returns>
private QueryResult Update(IEnumerable<Exceptional<DBObjectStream>> myDBObjects, IEnumerable<AAttributeAssignOrUpdateOrRemove> myListOfUpdates)
{
#region Data
var queryResultContent = new List<Vertex>();
var queryResult = new QueryResult();
#endregion
#region check for undefined attributes setting
var undefAttrSetting = _dbContext.DBSettingsManager.GetSetting(SettingUndefAttrBehaviour.UUID, _dbContext, TypesSettingScope.DB);
if (!undefAttrSetting.Success())
{
return new QueryResult(undefAttrSetting);
}
var undefSettingVal = ((SettingUndefAttrBehaviour)undefAttrSetting.Value).Behaviour;
#endregion
#region Validate attributes
var definedAttributeAssignments = new Dictionary<AttributeUUID, AAttributeAssignOrUpdate>();
foreach (var updateOrAssign in myListOfUpdates)
{
System.Diagnostics.Debug.Assert(updateOrAssign != null);
if (!(updateOrAssign is AttributeRemove))
{
var result = updateOrAssign.AttributeIDChain.Validate(_dbContext, true);
if (result.Failed())
{
return new QueryResult(result);
}
if (updateOrAssign.IsUndefinedAttributeAssign)
{
#region handle undefined attributes
switch (undefSettingVal)
{
case UndefAttributeBehaviour.disallow:
return new QueryResult(new Error_UndefinedAttributes());
case UndefAttributeBehaviour.warn:
queryResult.PushIWarning(new Warning_UndefinedAttribute(updateOrAssign.AttributeIDChain));
break;
}
#endregion
}
else
{
//here a dictionary is used, because myListOfUpdates will be traversed many times now (maybe CachedEnumerator can be used instead)
if (updateOrAssign is AAttributeAssignOrUpdate)
definedAttributeAssignments[GetAttributesToCheckForUnique(updateOrAssign)] = updateOrAssign as AAttributeAssignOrUpdate;
}
}
}
#endregion
#region check unique constraint
if (definedAttributeAssignments.CountIsGreater(0))
{
Exceptional<Boolean> CheckConstraint = null;
IEnumerable<GraphDBType> parentTypes = _dbContext.DBTypeManager.GetAllParentTypes(_graphDBType, true, false);
foreach (var entry in myDBObjects)
{
//here all attributes are listed, that will change their value
var changingAttributes = (from CurrentAttribute in entry.Value.GetAttributes()
join Update in definedAttributeAssignments on CurrentAttribute.Key equals Update.Key
where !CurrentAttribute.Value.Equals(Update.Value.GetValueForAttribute(entry.Value, _dbContext, _graphDBType).Value)
select new {Key = CurrentAttribute.Key, Value = CurrentAttribute.Value}).ToDictionary(x=>x.Key, x=>x.Value);
CheckConstraint = _dbContext.DBIndexManager.CheckUniqueConstraint(_graphDBType, parentTypes, changingAttributes);
if (CheckConstraint.Failed())
return new QueryResult(CheckConstraint.IErrors);
}
}
#endregion
#region regular update
foreach (var aDBO in myDBObjects)
{
//key: attribute name
//value: TypeAttribute, NewValue
Dictionary<String, Tuple<TypeAttribute, IObject>> attrsForResult = new Dictionary<String, Tuple<TypeAttribute, IObject>>();
if (aDBO.Failed())
{
return new QueryResult(aDBO);
}
#region data
Boolean sthChanged = false;
#endregion
#region iterate tasks
//Exceptional<Boolean> partialResult;
foreach (var attributeUpdateOrAssign in myListOfUpdates)
{
var updateResult = attributeUpdateOrAssign.Update(_dbContext, aDBO.Value, _graphDBType);
if (updateResult.Failed())
{
return new QueryResult(updateResult);
}
if (updateResult.Value.Count > 0)
{
sthChanged = true;
attrsForResult.AddRange(updateResult.Value);
}
}
#endregion
if (sthChanged)
{
var definedAttributes = ExtractDefinedAttributes(attrsForResult, _dbContext.DBTypeManager);
#region update Idx
foreach (var _AttributeIndex in _graphDBType.GetAllAttributeIndices(_dbContext))
{
if(definedAttributes.Exists(item => _AttributeIndex.IndexKeyDefinition.IndexKeyAttributeUUIDs.Contains(item.Key.Definition.UUID)))
{
//execute update
_AttributeIndex.Update(aDBO.Value, _graphDBType, _dbContext);
}
}
#endregion
#region update dbobjects on fs
var flushResult = _dbContext.DBObjectManager.FlushDBObject(aDBO.Value);
if (!flushResult.Success())
{
return new QueryResult(flushResult);
}
#endregion
var resultSet = GetManipulationResultSet(aDBO, undefinedAttributes: ExtractUndefindedAttributes(attrsForResult), attributes: definedAttributes);
if (!resultSet.Success())
{
/*
what should happen now
this should not break the update
*/
}
queryResultContent.Add(resultSet.Value);
}
}
/// <summary>
///
/// </summary>
/// <param name="_graphDBType"></param>
/// <param name="myAttributes">Pass null if you want to delete the whole object with all attributes</param>
/// <param name="myListOfAffectedDBObjectUUIDs"></param>
/// <param name="_dbContext"></param>
/// <param name="myToken"></param>
/// <param name="myDBObjectCache"></param>
/// <returns></returns>
public Exceptional<IEnumerable<Vertex>> DeleteDBObjects(GraphDBType myGraphDBType, List<TypeAttribute> myAttributes, IEnumerable<Exceptional<DBObjectStream>> myListOfAffectedDBObjects)
{
//some stuff for queryResult
UInt64 deletionCounter = 0;
foreach (var aDBO in myListOfAffectedDBObjects)
{
if (aDBO.Failed())
{
return new Exceptional<IEnumerable<Vertex>>(new Error_LoadObject(aDBO.Value.ObjectLocation));
}
deletionCounter++;
if (!myAttributes.IsNullOrEmpty())
{
#region Delete some defined attributes
foreach (var Attr in myAttributes)
{
if (Attr.GetRelatedType(_dbContext.DBTypeManager).GetMandatoryAttributesUUIDs(_dbContext.DBTypeManager).Contains(Attr.UUID))
{
#region Attribute is mandatory - set default value
if ((Boolean)_dbContext.DBSettingsManager.GetSetting(SettingDefaultsOnMandatory.UUID, _dbContext, TypesSettingScope.TYPE, Attr.GetRelatedType(_dbContext.DBTypeManager)).Value.Value.Value)
{
//the attribute will be removed from the dbobject --> update index
var removeAttributefromIdxResult = RemoveDBObjectFromIndex(aDBO.Value, Attr.UUID);
if (removeAttributefromIdxResult.Failed())
{
return new Exceptional<IEnumerable<Vertex>>(removeAttributefromIdxResult);
}
var defaultExcept = SetDefaultValue(Attr, aDBO);
if (defaultExcept.Failed())
return new Exceptional<IEnumerable<Vertex>>(defaultExcept);
if (!defaultExcept.Value)
return new Exceptional<IEnumerable<Vertex>>(new Error_UpdateAttributeValue(Attr));
#region update idx
//--> update index
var updateAttributefromIdxResult = InsertDBObjectIntoIndex(aDBO.Value, Attr.UUID);
if (updateAttributefromIdxResult.Failed())
{
return new Exceptional<IEnumerable<Vertex>>(updateAttributefromIdxResult);
}
#endregion
}
else
return new Exceptional<IEnumerable<Vertex>>(new Error_MandatoryConstraintViolation(Attr.Name));
#endregion
}
else
{
//the attribute will be removed from the dbobject --> update index
var removeAttributefromIdxResult = RemoveDBObjectFromIndex(aDBO.Value, Attr.UUID);
if (removeAttributefromIdxResult.Failed())
{
return new Exceptional<IEnumerable<Vertex>>(removeAttributefromIdxResult);
}
if (!aDBO.Value.RemoveAttribute(Attr.UUID))
{
return new Exceptional<IEnumerable<Vertex>>(new Error_RemoveTypeAttribute(myGraphDBType, Attr));
}
}
}
var saveResult = aDBO.Value.Save();
if (!saveResult.Success())
{
return new Exceptional<IEnumerable<Vertex>>(saveResult);
}
#endregion
}
else
{
#region Remove complete DBO
var objID = aDBO.Value.ObjectUUID;
var backwardEdgeLoadExcept = _dbContext.DBObjectManager.LoadBackwardEdge(aDBO.Value.ObjectLocation);
if (!backwardEdgeLoadExcept.Success())
return new Exceptional<IEnumerable<Vertex>>(backwardEdgeLoadExcept.IErrors.First());
var backwarEdges = backwardEdgeLoadExcept.Value;
var removeResult = _dbContext.DBObjectManager.RemoveDBObject(myGraphDBType, aDBO.Value, _dbContext.DBObjectCache, _dbContext.SessionSettings);
if (!removeResult.Success())
{
return new Exceptional<IEnumerable<Vertex>>(removeResult);
}
if (backwarEdges != null)
{
var delEdgeRefs = DeleteObjectReferences(objID, backwarEdges);
if (!delEdgeRefs.Success())
return new Exceptional<IEnumerable<Vertex>>(delEdgeRefs.IErrors.First());
}
#endregion
}
}
if (deletionCounter == 0)
{
var result = new Exceptional<IEnumerable<Vertex>>(new List<Vertex>());
return result.PushIWarningT(new Warning_NoObjectsToDelete());
}
return new Exceptional<IEnumerable<Vertex>>(new List<Vertex>());
}
private TypesOfBinaryExpression SetTypeOfBinaryExpression(Exceptional<DataContainer> leftData, Exceptional<DataContainer> rightData)
{
TypesOfBinaryExpression result;
if (leftData.Value.IDChainDefinitions.Item1 != null && rightData.Value.IDChainDefinitions.Item1 != null)
{
result = TypesOfBinaryExpression.Complex;
}
else
{
if (leftData.Value.IDChainDefinitions.Item1 == null && rightData.Value.IDChainDefinitions.Item1 == null)
{
result = TypesOfBinaryExpression.Atom;
}
else
{
if (leftData.Value.IDChainDefinitions.Item1 != null)
{
result = TypesOfBinaryExpression.LeftComplex;
}
else
{
result = TypesOfBinaryExpression.RightComplex;
}
}
}
return result;
}
/// <summary>
/// Finds matching result corresponding to a binary expression.
/// </summary>
/// <param name="myLeftValueObject">The left value of a binary expression.</param>
/// <param name="myRightValueObject">The right value of a binary expression.</param>
/// <param name="currentTypeDefinitione"></param>
/// <param name="dbContext">The TypeManager of the database.</param>
/// <param name="typeOfBinExpr">The type of the binary expression.</param>
/// <param name="associativity">The associativity of the binary expression.</param>
/// <param name="referenceList"></param>
/// <param name="queryCache">The per query DBObject/BackwardEdge cache.</param>
/// <returns></returns>
public override Exceptional<IExpressionGraph> TypeOperation(AExpressionDefinition myLeftValueObject, AExpressionDefinition myRightValueObject, DBContext dbContext, TypesOfBinaryExpression typeOfBinExpr, TypesOfAssociativity associativity, IExpressionGraph resultGr, Boolean aggregateAllowed = true)
{
#region Data
//list of errors
List<GraphDBError> errors = new List<GraphDBError>();
//DataContainer for all data that is used by a binary expression/comparer
Exceptional<DataContainer> data;
//the index of the left attribute
IEnumerable<Tuple<GraphDBType, AAttributeIndex>> leftIndex = null;
//the index of the right attribute
IEnumerable<Tuple<GraphDBType, AAttributeIndex>> rightIndex = null;
#endregion
#region extract data
//data extraction with an eye on the type of the binary expression
switch (typeOfBinExpr)
{
case TypesOfBinaryExpression.Atom:
//sth like 3 = 4
#region Get Atom data
//no further data has to be generated
//data = new DataContainer(null, new Tuple<Object, Object>(myLeftValueObject, myRightValueObject), null);
data = new Exceptional<DataContainer>();
#endregion
break;
case TypesOfBinaryExpression.LeftComplex:
//sth like U.Age = 21
#region Get LeftComplex data
data = ExtractData(myLeftValueObject, myRightValueObject, ref typeOfBinExpr, dbContext.DBObjectCache, dbContext.SessionSettings, dbContext, aggregateAllowed);
if (!data.Success())
{
return new Exceptional<IExpressionGraph>(data);
}
#endregion
break;
case TypesOfBinaryExpression.RightComplex:
//sth like 21 = U.Age
#region Get RightComplex data
data = ExtractData(myRightValueObject, myLeftValueObject, ref typeOfBinExpr, dbContext.DBObjectCache, dbContext.SessionSettings, dbContext, aggregateAllowed);
if (!data.Success())
{
return new Exceptional<IExpressionGraph>(data);
}
#endregion
break;
case TypesOfBinaryExpression.Complex:
//sth like U.Age = F.Alter
#region Get Complex data
var leftData = ExtractData(myLeftValueObject, myRightValueObject, ref typeOfBinExpr, dbContext.DBObjectCache, dbContext.SessionSettings, dbContext, aggregateAllowed);
if (!leftData.Success())
{
return new Exceptional<IExpressionGraph>(leftData);
}
var rightData = ExtractData(myRightValueObject, myLeftValueObject, ref typeOfBinExpr, dbContext.DBObjectCache, dbContext.SessionSettings, dbContext, aggregateAllowed);
if (!rightData.Success())
{
return new Exceptional<IExpressionGraph>(rightData);
}
if (typeOfBinExpr == TypesOfBinaryExpression.Unknown)
{
typeOfBinExpr = SetTypeOfBinaryExpression(leftData, rightData);
switch (typeOfBinExpr)
{
case TypesOfBinaryExpression.Atom:
data = new Exceptional<DataContainer>(new DataContainer(new Tuple<IDChainDefinition, IDChainDefinition>(null, null), new Tuple<AExpressionDefinition, AExpressionDefinition>(leftData.Value.Operands.Item1, leftData.Value.Operands.Item1), new Tuple<AExpressionDefinition, AExpressionDefinition>(null, null)));
break;
case TypesOfBinaryExpression.LeftComplex:
data = new Exceptional<DataContainer>(new DataContainer(new Tuple<IDChainDefinition, IDChainDefinition>(leftData.Value.IDChainDefinitions.Item1, null), new Tuple<AExpressionDefinition, AExpressionDefinition>(rightData.Value.Operands.Item1, null), new Tuple<AExpressionDefinition, AExpressionDefinition>(null, null)));
break;
case TypesOfBinaryExpression.RightComplex:
data = new Exceptional<DataContainer>(new DataContainer(new Tuple<IDChainDefinition, IDChainDefinition>(rightData.Value.IDChainDefinitions.Item1, null), new Tuple<AExpressionDefinition, AExpressionDefinition>(leftData.Value.Operands.Item1, null), new Tuple<AExpressionDefinition, AExpressionDefinition>(null, null)));
break;
case TypesOfBinaryExpression.Complex:
case TypesOfBinaryExpression.Unknown:
default:
throw new GraphDBException(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
}
else
{
data = new Exceptional<DataContainer>(JoinData(leftData.Value, rightData.Value));
}
#endregion
break;
default:
throw new ArgumentException();
}
#region handle errors
if (data.Failed())
{
return new Exceptional<IExpressionGraph>(data);
}
#endregion
#endregion
#region get indexes
switch (typeOfBinExpr)
{
case TypesOfBinaryExpression.LeftComplex:
leftIndex = GetIndex(data.Value.IDChainDefinitions.Item1.LastAttribute, dbContext, data.Value.IDChainDefinitions.Item1.LastType, data.Value.Extraordinaries.Item1);
break;
case TypesOfBinaryExpression.RightComplex:
//data.IdNodes.TupelElement1 is correct, because of correct handling in extract data (data.IdNodes.TupelElement2 should be null here)
rightIndex = GetIndex(data.Value.IDChainDefinitions.Item1.LastAttribute, dbContext, data.Value.IDChainDefinitions.Item1.LastType, data.Value.Extraordinaries.Item1);
break;
case TypesOfBinaryExpression.Complex:
//both indexe have to be catched
leftIndex = GetIndex(data.Value.IDChainDefinitions.Item1.LastAttribute, dbContext, data.Value.IDChainDefinitions.Item1.LastType, data.Value.Extraordinaries.Item1);
rightIndex = GetIndex(data.Value.IDChainDefinitions.Item2.LastAttribute, dbContext, data.Value.IDChainDefinitions.Item2.LastType, data.Value.Extraordinaries.Item1);
break;
}
#endregion
//time to compare some things
Exceptional<Boolean> matchDataResult = null;
if (IsValidIndexOperation(data.Value, dbContext, typeOfBinExpr))
{
#region match data
switch (typeOfBinExpr)
{
case TypesOfBinaryExpression.Atom:
#region Atom
//do nothing 3 = 3 (or 2 != 3) doesnt bother U
#endregion
break;
case TypesOfBinaryExpression.LeftComplex:
#region LeftComplex
matchDataResult = MatchData(data.Value, dbContext, dbContext.DBObjectCache, typeOfBinExpr, leftIndex, resultGr, dbContext.SessionSettings);
#endregion
break;
case TypesOfBinaryExpression.RightComplex:
#region RightComplex
matchDataResult = MatchData(data.Value, dbContext, dbContext.DBObjectCache, typeOfBinExpr, rightIndex, resultGr, dbContext.SessionSettings);
#endregion
break;
case TypesOfBinaryExpression.Complex:
#region Complex
matchDataResult = MatchComplexData(associativity, data.Value, dbContext, dbContext.DBObjectCache, typeOfBinExpr, leftIndex, rightIndex, ref errors, ref resultGr, dbContext.SessionSettings);
#endregion
break;
}
#endregion
}
else
{
return new Exceptional<IExpressionGraph>(new Error_InvalidBinaryExpression(this, data.Value.IDChainDefinitions, data.Value.Operands, typeOfBinExpr));
}
if (matchDataResult != null && matchDataResult.Failed())
return new Exceptional<IExpressionGraph>(matchDataResult);
else
return new Exceptional<IExpressionGraph>(resultGr);
}
/// <summary>
/// setting the default value for the attribute
/// </summary>
/// <param name="myAttr">the attribute</param>
/// <param name="myDBObjectCache">the object cache</param>
/// <returns>true if the value was changed</returns>
private Exceptional<Boolean> SetDefaultValue(TypeAttribute myAttr, Exceptional<DBObjectStream> myDBO, DBContext dbContext)
{
if (myDBO.Success())
{
IObject defaultValue = myAttr.DefaultValue;
if (defaultValue == null)
defaultValue = myAttr.GetDefaultValue(dbContext);
var alterExcept = myDBO.Value.AlterAttribute(myAttr.UUID, defaultValue);
if (alterExcept.Failed())
return new Exceptional<Boolean>(alterExcept);
if (!alterExcept.Value)
{
return new Exceptional<bool>(false);
}
}
else
{
return new Exceptional<bool>(false);
}
return new Exceptional<bool>(true);
}
public Exceptional<QueryResult> AlterType(DBContext dbInnerContext, GraphDBType atype, AAlterTypeCommand alterTypeCommand)
{
var result = alterTypeCommand.Execute(dbInnerContext, atype);
if (!result.Success())
{
var retVal = new Exceptional<QueryResult>(result);
return retVal;
}
else
{
var resultReadout = alterTypeCommand.CreateVertex(dbInnerContext, atype);
if (resultReadout != null)
{
var retVal = new Exceptional<QueryResult>(new QueryResult(resultReadout));
retVal.PushIExceptional(result);
return retVal;
}
return new Exceptional<QueryResult>(result);
}
}
public Exceptional GetContent(CompilerContext context, ParseTreeNode parseNode)
{
var retExceptional = new Exceptional();
#region get Name
_TypeName = parseNode.ChildNodes[0].Token.ValueString;
#endregion
#region get Extends
if (parseNode.ChildNodes[1].HasChildNodes())
{
_Extends = parseNode.ChildNodes[1].ChildNodes[1].Token.ValueString;
}
else
{
//if there is no extend a Type is alwayse inheritated by GraphObject
_Extends = DBVertex.Name;
}
#endregion
#region get myAttributes
if (parseNode.ChildNodes[2].HasChildNodes())
{
_Attributes = GetAttributeList(parseNode.ChildNodes[2].ChildNodes[1]);
}
#endregion
#region get BackwardEdges
if (parseNode.ChildNodes[3].HasChildNodes())
{
_BackwardEdgeInformation = (((BackwardEdgesNode)parseNode.ChildNodes[3].AstNode).BackwardEdgeInformation);
}
#endregion
#region get Optional Unique
if (((UniqueAttributesOptNode)parseNode.ChildNodes[4].AstNode).UniqueAttributes != null)
{
foreach (String uniqueAttr in ((UniqueAttributesOptNode)parseNode.ChildNodes[4].AstNode).UniqueAttributes)
{
if (_Attributes.Any(a => a.Key.AttributeName == uniqueAttr))
{
var attr = (from a in _Attributes where a.Key.AttributeName == uniqueAttr select a).First();
attr.Key.AttributeType.TypeCharacteristics.IsUnique = true;
}
else
{
throw new GraphDBException(new Error_AttributeIsNotDefined(uniqueAttr));
}
}
}
#endregion
#region get Optional Mandatory
if (((MandatoryOptNode)parseNode.ChildNodes[5].AstNode).MandatoryAttribs != null)
{
foreach (String mandAttr in ((MandatoryOptNode)parseNode.ChildNodes[5].AstNode).MandatoryAttribs)
{
if (_Attributes.Any(a => a.Key.AttributeName == mandAttr))
{
var attr = (from a in _Attributes where a.Key.AttributeName == mandAttr select a).First();
attr.Key.AttributeType.TypeCharacteristics.IsMandatory = true;
}
else
{
throw new GraphDBException(new Error_AttributeIsNotDefined(mandAttr));
}
}
}
#endregion
#region Get Optional Indices
if(parseNode.ChildNodes[6].HasChildNodes())
{
if (parseNode.ChildNodes[6].ChildNodes[0].HasChildNodes())
{
var idxCreateNode = (IndexOnCreateTypeNode)parseNode.ChildNodes[6].ChildNodes[0].AstNode;
ParsingResult.PushIExceptional(idxCreateNode.ParsingResult);
_Indices = new List<IndexDefinition>();
foreach(var idx in idxCreateNode.ListOfIndexDefinitions)
{
_Indices.Add(idx);
}
}
}
#endregion
#region get Comment
if (parseNode.ChildNodes[7].HasChildNodes())
{
_Comment = parseNode.ChildNodes[7].ChildNodes[2].Token.ValueString;
}
#endregion
return retExceptional;
}
private Exceptional<ResultType> AddAttributeToDBObject(GraphDBType myTypeOfDBObject, ObjectUUID myUUID, AttributeUUID myAttributeUUID, IObject myAttributeValue)
{
//myGraphType is needed due to correctness concerning the attribute name
#region Input exceptions
if ((myTypeOfDBObject == null) || (myUUID == null) || (myAttributeUUID == null) || (myAttributeValue == null))
{
throw new ArgumentNullException();
}
#endregion
#region Check GraphType for new Attribute
TypeAttribute typeAttribute = myTypeOfDBObject.GetTypeAttributeByUUID(myAttributeUUID);
if (typeAttribute == null)
{
//Todo: add notification here (the user has to be informed about the detailed circumstances)
GraphDBError aError = new Error_AttributeIsNotDefined(myTypeOfDBObject.Name, myAttributeUUID.ToString());
return new Exceptional<ResultType>(aError);
}
#endregion
#region Data
var objectLocation = new ObjectLocation(myTypeOfDBObject.ObjectLocation, DBConstants.DBObjectsLocation, myUUID.ToString());
Exceptional<DBObjectStream> aNewDBObject;
Exceptional<ResultType> result = new Exceptional<ResultType>();
#endregion
#region add attribute
aNewDBObject = _DBContext.DBObjectManager.LoadDBObject(myTypeOfDBObject, myUUID);
if (aNewDBObject.Failed())
{
result.PushIError(new Error_LoadObject(aNewDBObject.Value.ObjectLocation));
return result;
}
result = aNewDBObject.Value.AddAttribute(typeAttribute.UUID, myAttributeValue);
if (result.Failed())
return result;
try
{
_DBContext.DBObjectManager.FlushDBObject(aNewDBObject.Value);
}
catch (Exception ex)
{
result.PushIError(new Error_FlushObject(aNewDBObject.Value.ObjectLocation, ex));
aNewDBObject.Value.RemoveAttribute(typeAttribute.UUID);
}
#endregion
return result;
}
/// <summary>
/// Add indices to a vertex
/// <seealso cref=" AAlterTypeCommand"/>
/// </summary>
public override Exceptional Execute(DBContext myDBContext, GraphDBType myGraphDBType)
{
var retExceptional = new Exceptional();
foreach (var idxDef in _IdxDefinitionList)
{
var checkIdx = CheckIndexTypeReference(idxDef.IndexAttributeDefinitions, myGraphDBType);
if (!checkIdx.Success())
{
retExceptional.PushIExceptional(checkIdx);
}
else
{
var result = myDBContext.DBIndexManager.CreateIndex(myDBContext, myGraphDBType.Name, idxDef.IndexName, idxDef.Edition, idxDef.IndexType, idxDef.IndexAttributeDefinitions);
if (!result.Success())
{
retExceptional.PushIExceptional(result);
}
}
}
return retExceptional;
}
/// <summary>
/// This will check the exceptional for errors. Depending on the SettingInvalidReferenceHandling an expcetion will be thrown or false will be return on any load error.
/// </summary>
/// <param name="dbStream"></param>
/// <param name="myLevelKey"></param>
/// <returns></returns>
private Boolean CheckLoadedDBObjectStream(Exceptional<DBObjectStream> dbStream, GraphDBType myDBType, TypeAttribute myTypeAttribute = null)
{
SettingInvalidReferenceHandling invalidReferenceSetting = null;
GraphDBType currentType = myDBType;
if (dbStream.Failed())
{
#region error
#region get setting
if (invalidReferenceSetting == null)
{
//currentType = _DBContext.DBTypeManager.GetTypeByUUID(myLevelKey.LastEdge.TypeUUID);
//if (myLevelKey.LastEdge.AttrUUID != null)
if (myTypeAttribute != null)
{
invalidReferenceSetting = (SettingInvalidReferenceHandling)_DBContext.DBSettingsManager.GetSetting(SettingInvalidReferenceHandling.UUID, _DBContext, TypesSettingScope.ATTRIBUTE, currentType, myTypeAttribute).Value; // currentType.GetTypeAttributeByUUID(myLevelKey.LastEdge.AttrUUID)).Value;
}
else
{
invalidReferenceSetting = (SettingInvalidReferenceHandling)_DBContext.DBSettingsManager.GetSetting(SettingInvalidReferenceHandling.UUID, _DBContext, TypesSettingScope.TYPE, currentType).Value;
}
}
#endregion
switch (invalidReferenceSetting.Behaviour)
{
case BehaviourOnInvalidReference.ignore:
#region ignore
return false;
#endregion
case BehaviourOnInvalidReference.log:
default:
throw new GraphDBException(new Error_NotImplemented(new System.Diagnostics.StackTrace()));
}
#endregion
}
return true;
}
public override Exceptional Execute(DBContext dbContext, GraphDBType graphDBType)
{
var listOfTypeAttrs = new List<TypeAttribute>();
var retExcept = new Exceptional();
foreach (var attr in _ListOfAttributes)
{
var typeAttr = graphDBType.GetTypeAttributeByName(attr);
if (typeAttr == null)
{
return new Exceptional(new Error_AttributeIsNotDefined(attr));
}
var attrType = dbContext.DBTypeManager.GetTypeByUUID(typeAttr.DBTypeUUID);
if (attrType == null)
return new Exceptional(new Error_TypeDoesNotExist(""));
if (attrType.IsUserDefined)
return new Exceptional(new Error_InvalidReferenceAssignmentOfUndefAttr());
listOfTypeAttrs.Add(typeAttr);
}
var dbobjects = dbContext.DBObjectCache.SelectDBObjectsForLevelKey(new LevelKey(graphDBType, dbContext.DBTypeManager), dbContext);
foreach (var item in dbobjects)
{
if (!item.Success())
{
retExcept.PushIExceptional(item);
}
else
{
foreach (var attr in listOfTypeAttrs)
{
if (item.Value.HasAttribute(attr.UUID, graphDBType))
{
var attrVal = item.Value.GetAttribute(attr.UUID);
var addExcept = item.Value.AddUndefinedAttribute(attr.Name, attrVal, dbContext.DBObjectManager);
if (!addExcept.Success())
retExcept.PushIExceptional(addExcept);
item.Value.RemoveAttribute(attr.UUID);
var saveExcept = dbContext.DBObjectManager.FlushDBObject(item.Value);
if (!saveExcept.Success())
retExcept.PushIExceptional(saveExcept);
}
}
}
}
var indices = graphDBType.GetAllAttributeIndices();
List<AAttributeIndex> idxToDelete = new List<AAttributeIndex>();
//remove attributes from type
foreach (var attr in listOfTypeAttrs)
{
foreach (var item in indices)
{
var index = item.IndexKeyDefinition.IndexKeyAttributeUUIDs.Find(idx => idx == attr.UUID);
if (index != null && item.IndexKeyDefinition.IndexKeyAttributeUUIDs.Count == 1)
{
idxToDelete.Add(item);
}
}
//remove indices
foreach (var idx in idxToDelete)
{
var remExcept = graphDBType.RemoveIndex(idx.IndexName, idx.IndexEdition, dbContext.DBTypeManager);
if (!remExcept.Success())
{
retExcept.PushIExceptional(remExcept);
}
}
idxToDelete.Clear();
graphDBType.RemoveAttribute(attr.UUID);
var flushExcept = dbContext.DBTypeManager.FlushType(graphDBType);
if (!flushExcept.Success())
{
retExcept.PushIExceptional(flushExcept);
}
}
return retExcept;
}
public override void AddNodesWithComplexRelation(Exceptional<DBObjectStream> leftDBObject, LevelKey leftLevelKey, Exceptional<DBObjectStream> rightDBObject, LevelKey rightLevelKey, DBObjectCache dbObjectCache, int backwardResolutiondepth)
{
lock (_Levels)
{
if ((AddNodeIfValid(leftDBObject.Value, leftLevelKey, 0, leftDBObject.Value.ObjectUUID, backwardResolutiondepth)) && (AddNodeIfValid(rightDBObject.Value, rightLevelKey, 0, rightDBObject.Value.ObjectUUID, backwardResolutiondepth)))
{
//both nodes have been inserted correctly
//--> create a connection between both
_Levels[leftLevelKey.Level].ExpressionLevels[leftLevelKey].Nodes[leftDBObject.Value.ObjectUUID].AddComplexConnection(rightLevelKey, rightDBObject.Value.ObjectUUID);
_Levels[rightLevelKey.Level].ExpressionLevels[rightLevelKey].Nodes[rightDBObject.Value.ObjectUUID].AddComplexConnection(leftLevelKey, leftDBObject.Value.ObjectUUID);
}
else
{
#region remove both nodes
if (ContainsLevelKey(leftLevelKey))
{
_Levels[leftLevelKey.Level].RemoveNode(leftLevelKey, leftDBObject.Value.ObjectUUID);
}
if (ContainsLevelKey(leftLevelKey))
{
_Levels[rightLevelKey.Level].RemoveNode(rightLevelKey, rightDBObject.Value.ObjectUUID);
}
#endregion
}
}
}
/// <summary>
/// This method adds a bunch of new GraphTypeDefinitions (comes from a CREATE TYPE(S) statement) to the TypeManager.
/// If a certain PType can't be added (because of some inheritance or
/// attribute errors), this method tries to add it in a second
/// step.
/// </summary>
/// <param name="TypeList">List of GraphType definitions that should
/// be added to the TypeManager</param>
/// <returns>List of GraphError</returns>
public Exceptional<QueryResult> AddBulkTypes(List<GraphDBTypeDefinition> TypeList, DBContext currentContext)
{
#region Input Exceptions
if (TypeList == null)
{
return new Exceptional<QueryResult>(new QueryResult());
}
if (TypeList.Count.Equals(0))
{
return new Exceptional<QueryResult>(new QueryResult());
}
#endregion
#region Data
var errors = new List<GraphDBError>();
List<GraphDBType> addedTypes = new List<GraphDBType>();
List<AttributeUUID> uniqueAttrIDs = new List<AttributeUUID>();
QueryResult result = new QueryResult();
#endregion
try
{
#region Create the types without attributes
foreach (GraphDBTypeDefinition aTypeDef in TypeList)
{
#region Input validation
if (String.IsNullOrEmpty(aTypeDef.Name))
return new Exceptional<QueryResult>(new Error_ArgumentNullOrEmpty("myTypeName"));
if (String.IsNullOrEmpty(aTypeDef.ParentType))
return new Exceptional<QueryResult>(new Error_ArgumentNullOrEmpty("myParentType"));
if (aTypeDef.Attributes == null)
return new Exceptional<QueryResult>(new Error_ArgumentNullOrEmpty("myAttributes"));
#endregion
GraphDBType thisType = GetTypeByName(aTypeDef.Name);
#region Check if the name of the type is already used
if (thisType != null)
{
return new Exceptional<QueryResult>(new Error_TypeAlreadyExist(aTypeDef.Name));
}
#endregion
GraphDBType parentType = GetTypeByName(aTypeDef.ParentType);
Dictionary<AttributeUUID, TypeAttribute> attributes = new Dictionary<AttributeUUID, TypeAttribute>();
#region objectDirectoryShards
var objectDirectoryShards = UInt16.Parse(currentContext.GraphAppSettings.Get<ObjectsDirectoryShardsSetting>());
#endregion
#region Add type
TypeUUID parentUUID = (parentType == null) ? null : parentType.UUID;
#region hack
GraphDBType _NewGraphType = new GraphDBType(null, new ObjectLocation(_DatabaseRootPath), aTypeDef.Name, parentUUID, attributes, true, aTypeDef.IsAbstract, aTypeDef.Comment, objectDirectoryShards);
#endregion
addedTypes.Add(_NewGraphType);
_UserDefinedTypes.Add(_NewGraphType.UUID, _NewGraphType);
_TypesNameLookUpTable.Add(_NewGraphType.Name, _NewGraphType);
#endregion
}
#endregion
var backwardEdgesToBeAddedAfterwards = new Dictionary<GraphDBType, List<BackwardEdgeDefinition>>();
#region Validate the previously added types and add the attributes and backwardEdges
foreach (var aTypeDef in TypeList)
{
GraphDBType aType = addedTypes.Where(item => item.Name == aTypeDef.Name).FirstOrDefault();
#region Check and set parent
GraphDBType parentType;
#region Verify base type existence
if (aType.ParentTypeUUID == null)
{
parentType = addedTypes.Where(item => item.Name == aTypeDef.ParentType).FirstOrDefault();
if (parentType == null)
{
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(new Error_ParentTypeDoesNotExist(aTypeDef.ParentType, aTypeDef.Name));
}
aType.SetParentTypeUUID(parentType.UUID);
}
else
{
parentType = aType.GetParentType(this);
}
#endregion
#region Verify that the type inherit DBReference
var parentTypeExcept = HasParentType(parentType.UUID, DBReference.UUID);
if (parentTypeExcept.Failed())
{
return new Exceptional<QueryResult>(parentTypeExcept);
}
if (!parentTypeExcept.Value)
{
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(new Error_InvalidBaseType(parentType.Name));
}
#endregion
#endregion
//add TypeAttributeLookuptable to current type
aType.AttributeLookupTable.AddRange(parentType.AttributeLookupTable);
#region check and set type of attributes
UInt16 attributeCounter = 0;
foreach (var attributeDef in aTypeDef.Attributes)
{
var attribute = attributeDef.Key.CreateTypeAttribute(currentContext, addedTypes, attributeCounter);
if (attribute.Failed())
{
return new Exceptional<QueryResult>(attribute);
}
if (attribute.Value.Name == aType.Name)
{
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(new Error_InvalidAttributeName("The attribute " + attribute.Value.Name + " can not be added, because it has the same name as its related type."));
}
GraphDBType attrType = GetTypeByName(attributeDef.Value);
if (attrType == null)
{
attrType = addedTypes.Where(item => item.Name == attributeDef.Value).FirstOrDefault();
if (attrType == null)
{
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(new Error_TypeDoesNotExist(attributeDef.Value));
}
}
attributeCounter++;
TypeAttribute newAttr = attribute.Value;
newAttr.DBTypeUUID = attrType.UUID;
newAttr.RelatedGraphDBTypeUUID = aType.UUID;
#region we had not defined a special EdgeType - for single reference attributes we need to set the EdgeTypeSingle NOW!
if (newAttr.KindOfType == KindsOfType.SingleReference && attrType.IsUserDefined && newAttr.EdgeType == null)
newAttr.EdgeType = new EdgeTypeSingleReference(null, newAttr.DBTypeUUID);
#endregion
#region Validate EdgeType in terms of List & Single
if (newAttr.KindOfType == KindsOfType.SingleReference && attrType.IsUserDefined && !(newAttr.EdgeType is ASingleReferenceEdgeType))
{
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(new Error_InvalidEdgeType(newAttr.EdgeType.GetType(), typeof(ASingleReferenceEdgeType)));
}
else if (newAttr.KindOfType == KindsOfType.SetOfReferences || newAttr.KindOfType == KindsOfType.SetOfNoneReferences)
{
if (attrType.IsUserDefined && !(newAttr.EdgeType is ASetOfReferencesEdgeType))
{
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(new Error_InvalidEdgeType(newAttr.EdgeType.GetType(), typeof(ASetOfReferencesEdgeType)));
}
else if (!attrType.IsUserDefined && !(newAttr.EdgeType is ASetOfBaseEdgeType))
{
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(new Error_InvalidEdgeType(newAttr.EdgeType.GetType(), typeof(AListOfBaseEdgeType)));
}
}
#endregion
aType.AddAttribute(newAttr, this, true);
}
#endregion
#region Set BackwardEdges
if (!aTypeDef.BackwardEdgeNodes.IsNullOrEmpty())
{
backwardEdgesToBeAddedAfterwards.Add(aType, aTypeDef.BackwardEdgeNodes);
}
#endregion
}
#endregion
#region Add the BackwardEdges
foreach (var beDefinition in backwardEdgesToBeAddedAfterwards)
{
var aType = beDefinition.Key;
UInt16 beAttrCounter = 0;
foreach (var be in beDefinition.Value)
{
var bedgeAttribute = CreateBackwardEdgeAttribute(be, aType, beAttrCounter);
if (!bedgeAttribute.Success())
{
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(bedgeAttribute);
}
aType.AddAttribute(bedgeAttribute.Value, this, true);
beAttrCounter++;
}
}
#endregion
#region Validate Attribute dependencies
var _Vertices = new List<Vertex>();
foreach (var _GraphDBType in addedTypes)
{
foreach (var _GraphDBType2 in GetAllParentTypes(_GraphDBType, false, true))
{
var _MandatoryAttributes = _GraphDBType2.GetMandatoryAttributesUUIDs(this);
var _UniqueAttributes = _GraphDBType2.GetAllUniqueAttributes(false, this);
foreach (var _TypeAttribute in _GraphDBType.Attributes.Values)
{
if (_GraphDBType2.GetTypeAttributeByName(_TypeAttribute.Name) != null)
{
// Todo: Use notification here
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(new Error_AttributeExistsInSupertype(_TypeAttribute.Name, _GraphDBType.Name));
}
#region unique and mandatory attributes
if (_TypeAttribute.TypeCharacteristics.IsUnique && !_UniqueAttributes.Contains(_TypeAttribute.UUID))
{
//if the attrbute has been marked unique and it is not contained in uniques of super types
if (!uniqueAttrIDs.Contains(_TypeAttribute.UUID))
{
uniqueAttrIDs.Add(_TypeAttribute.UUID);
}
}
if (_TypeAttribute.TypeCharacteristics.IsMandatory && !_MandatoryAttributes.Contains(_TypeAttribute.UUID))
{
_GraphDBType.AddMandatoryAttribute(_TypeAttribute.UUID, this);
}
#endregion
}
}
//Add the unique attribute ids for the current type
var AddUniqueAttrExcept = _GraphDBType.AddUniqueAttributes(uniqueAttrIDs, currentContext);
if(AddUniqueAttrExcept.Failed())
return new Exceptional<QueryResult>(AddUniqueAttrExcept);
uniqueAttrIDs.Clear();
}
#endregion
#region Create indices
foreach (GraphDBType aType in addedTypes)
{
#region Create userdefined Indices
var aTypeDef = TypeList.Where(item => item.Name == aType.Name).FirstOrDefault();
if (!aTypeDef.Indices.IsNullOrEmpty())
{
foreach (var index in aTypeDef.Indices)
{
if (!index.IndexAttributeDefinitions.All(node => !node.IndexAttribute.Validate(currentContext, false, aType).Failed()))
{
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(new Error_AttributeIsNotDefined(aType.Name, aType.Name));
}
var idxName = index.IndexName;
if (String.IsNullOrEmpty(index.IndexName))
{
idxName = index.IndexAttributeDefinitions.Aggregate(new StringBuilder(DBConstants.IndexKeyPrefix), (stringB, elem) => { stringB.Append(String.Concat(DBConstants.IndexKeySeperator, elem.IndexAttribute.LastAttribute.Name)); return stringB; }).ToString();
}
List<AttributeUUID> indexAttrs = new List<AttributeUUID>(index.IndexAttributeDefinitions.Select(node => node.IndexAttribute.LastAttribute.UUID));
foreach (var item in GetAllSubtypes(aType))
{
var CreateIdxExcept = item.CreateAttributeIndex(currentContext, idxName, indexAttrs, index.Edition, index.IndexType);
if (!CreateIdxExcept.Success())
return new Exceptional<QueryResult>(CreateIdxExcept);
}
}
}
#endregion
//UUID index
var createIndexExcept = aType.CreateUUIDIndex(_DBContext, GetUUIDTypeAttribute().UUID);
if (!createIndexExcept.Success())
{
return new Exceptional<QueryResult>(createIndexExcept);
}
List<AttributeUUID> UniqueIDs = aType.GetAllUniqueAttributes(true, this);
if (UniqueIDs.Count() > 0)
{
var idxName = _DBContext.DBIndexManager.GetUniqueIndexName(UniqueIDs, aType); // UniqueIDs.Aggregate<AttributeUUID, String>("Idx", (result, item) => result = result + "_" + aType.GetTypeAttributeByUUID(item).Name);
var createIdxExcept = aType.CreateUniqueAttributeIndex(currentContext, idxName, UniqueIDs, DBConstants.UNIQUEATTRIBUTESINDEX);
if (!createIdxExcept.Success())
return new Exceptional<QueryResult>(createIdxExcept);
}
}
#endregion
#region flush to fs
foreach (var item in addedTypes)
{
var createException = CreateTypeOnFS(item);
if (!createException.Success())
return new Exceptional<QueryResult>(createException);
#region get system attributes from type
var readOut = GetVertexForType(item);
if (!readOut.Success())
return new Exceptional<QueryResult>(readOut.IErrors.First());
_Vertices.Add(readOut.Value);
#endregion
}
result.Vertices = _Vertices;
#endregion
}
catch (GraphDBException ee)
{
RemoveRecentlyAddedTypes(addedTypes);
var _Exceptional = new Exceptional<QueryResult>();
foreach (var _ex in ee.GraphDBErrors)
_Exceptional.PushIError(_ex);
return _Exceptional;
}
catch (GraphDBWarningException ee)
{
RemoveRecentlyAddedTypes(addedTypes);
return new Exceptional<QueryResult>(ee.GraphDBWarning);
}
catch (Exception e)
//finally
{
//if (!succeeded)
//{
addedTypes.ForEach(item =>
{
_UserDefinedTypes.Remove(item.UUID);
_TypesNameLookUpTable.Remove(item.Name);
});
//}
return new Exceptional<QueryResult>(new Error_UnknownDBError(e));
}
return new Exceptional<QueryResult>(result);
}
internal Exceptional SetBackwardEdges(GraphDBType aType, Dictionary<AttributeUUID, IObject> userdefinedAttributes, ObjectUUID reference, DBContext dbContext)
{
var returnVal = new Exceptional();
#region process attributes
foreach (var aUserDefinedAttribute in userdefinedAttributes)
{
#region Data
GraphDBType typeOFAttribute = null;
TypeAttribute attributesOfType = null;
#endregion
#region get GraphType of Attribute
//attributesOfType = aType.Attributes[aUserDefinedAttribute.Key];
attributesOfType = aType.GetTypeAttributeByUUID(aUserDefinedAttribute.Key);
typeOFAttribute = dbContext.DBTypeManager.GetTypeByUUID(attributesOfType.DBTypeUUID);
#endregion
/* The DBO independent version */
var beEdge = new EdgeKey(aType.UUID, attributesOfType.UUID);
var runMT = DBConstants.RunMT;
runMT = false;
if (runMT)
{
#region The parallel version
/**/
/* The parallel version */
Parallel.ForEach(((IReferenceEdge)aUserDefinedAttribute.Value).GetAllReferenceIDs(), (uuid) =>
{
var addExcept = dbContext.DBObjectManager.AddBackwardEdge(uuid, attributesOfType.DBTypeUUID, beEdge, reference);
if (!addExcept.Success())
{
returnVal.PushIExceptional(addExcept);
}
});
if (!returnVal.Success())
{
return returnVal;
}
/**/
#endregion
}
else
{
#region Single thread
foreach (var uuid in ((IReferenceEdge)aUserDefinedAttribute.Value).GetAllReferenceIDs())
{
var addExcept = dbContext.DBObjectManager.AddBackwardEdge(uuid, attributesOfType.DBTypeUUID, beEdge, reference);
if (addExcept.Failed())
{
return new Exceptional(addExcept);
}
}
#endregion
}
}
#endregion
return Exceptional.OK;
}
public override Exceptional Execute(DBContext dbContext, GraphDBType graphDBType)
{
var listOfTypeAttributes = new Dictionary<TypeAttribute, GraphDBType>();
var retExcept = new Exceptional();
var existingTypeAttributes = graphDBType.GetAllAttributes(dbContext);
foreach (var attr in _ListOfAttributes)
{
var createExcept = attr.CreateTypeAttribute(dbContext);
if (!createExcept.Success())
{
retExcept.PushIExceptional(createExcept);
}
if (existingTypeAttributes.Exists(item => item.Name == createExcept.Value.Name))
{
retExcept.PushIExceptional(new Exceptional(new Error_AttributeAlreadyExists(createExcept.Value.Name)));
}
var attrType = dbContext.DBTypeManager.GetTypeByName(attr.AttributeType.Name);
if (attrType == null)
{
retExcept.PushIExceptional(new Exceptional(new Error_TypeDoesNotExist(attr.AttributeType.Name)));
return retExcept;
}
if (attrType.IsUserDefined)
{
retExcept.PushIExceptional(new Exceptional(new Error_InvalidReferenceAssignmentOfUndefAttr()));
return retExcept;
}
createExcept.Value.DBTypeUUID = attrType.UUID;
createExcept.Value.RelatedGraphDBTypeUUID = graphDBType.UUID;
graphDBType.AddAttribute(createExcept.Value, dbContext.DBTypeManager, true);
var flushExcept = dbContext.DBTypeManager.FlushType(graphDBType);
if (!flushExcept.Success())
{
retExcept.PushIExceptional(flushExcept);
}
listOfTypeAttributes.Add(createExcept.Value, attrType);
}
var dbobjects = dbContext.DBObjectCache.SelectDBObjectsForLevelKey(new LevelKey(graphDBType, dbContext.DBTypeManager), dbContext);
foreach (var item in dbobjects)
{
if (!item.Success())
{
retExcept.PushIExceptional(item);
}
else
{
var undefAttrExcept = item.Value.GetUndefinedAttributePayload(dbContext.DBObjectManager);
if (!undefAttrExcept.Success())
{
retExcept.PushIExceptional(undefAttrExcept);
}
foreach (var attr in listOfTypeAttributes)
{
IObject value;
if (undefAttrExcept.Value.TryGetValue(attr.Key.Name, out value))
{
var typeOfOperator = GraphDBTypeMapper.ConvertGraph2CSharp(attr.Value.Name);
if (GraphDBTypeMapper.IsAValidAttributeType(attr.Value, typeOfOperator, dbContext, value))
{
item.Value.AddAttribute(attr.Key.UUID, value);
var removeExcept = item.Value.RemoveUndefinedAttribute(attr.Key.Name, dbContext.DBObjectManager);
if (!removeExcept.Success())
{
retExcept.PushIExceptional(removeExcept);
}
var flushExcept = dbContext.DBObjectManager.FlushDBObject(item.Value);
if (!flushExcept.Success())
{
retExcept.PushIExceptional(flushExcept);
}
}
else
{
retExcept.PushIExceptional(new Exceptional(new Error_InvalidUndefAttrType(attr.Key.Name, attr.Value.Name)));
}
}
}
}
}
return Exceptional.OK;
}
/// <summary>
/// Create a readout based on the passed <paramref name="attributes"/>, <paramref name="undefinedAttributes"/>, <paramref name="specialTypeAttributes"/> which are all optional
/// </summary>
/// <param name="myDBObjectStreamExceptional"></param>
/// <param name="attributes"></param>
/// <param name="undefinedAttributes"></param>
/// <param name="specialTypeAttributes"></param>
/// <returns></returns>
private Exceptional<Vertex> GetManipulationResultSet(DBContext myDBContext, Exceptional<DBObjectStream> myDBObjectStreamExceptional, GraphDBType myGraphDBType, Dictionary<TypeAndAttributeDefinition, IObject> attributes = null, Dictionary<String, IObject> undefinedAttributes = null, Dictionary<ASpecialTypeAttribute, Object> specialTypeAttributes = null)
{
Vertex _Vertex = null;
#region Return inserted attributes
#region attributes
if (!attributes.IsNullOrEmpty())
{
_Vertex = new Vertex(attributes.ToDictionary(key => key.Key.Definition.Name, value => value.Value.GetReadoutValue()));
}
else
{
_Vertex = new Vertex();
}
#endregion
#region UndefinedAttributes
if (!undefinedAttributes.IsNullOrEmpty())
{
foreach (var undefAttr in undefinedAttributes)
{
_Vertex.AddAttribute(undefAttr.Key, undefAttr.Value.GetReadoutValue());
}
}
#endregion
#region SpecialTypeAttributes
if (!specialTypeAttributes.IsNullOrEmpty())
{
foreach (var specAttr in specialTypeAttributes)
{
_Vertex.AddAttribute(specAttr.Key.Name, specAttr.Value);
}
}
#endregion
#region UUID
if (!_Vertex.HasAttribute(SpecialTypeAttribute_UUID.AttributeName))
{
var extractedValue = new SpecialTypeAttribute_UUID().ExtractValue(myDBObjectStreamExceptional.Value, myGraphDBType, myDBContext);
if (extractedValue.Failed())
{
return new Exceptional<Vertex>(extractedValue);
}
_Vertex.AddAttribute(SpecialTypeAttribute_UUID.AttributeName, extractedValue.Value.GetReadoutValue());
}
#endregion
#region REVISION
if (!_Vertex.HasAttribute(SpecialTypeAttribute_REVISION.AttributeName)) // If it was updated by SpecialTypeAttributes we do not need to add them again
{
var extractedValue = new SpecialTypeAttribute_REVISION().ExtractValue(myDBObjectStreamExceptional.Value, myGraphDBType, myDBContext);
if (extractedValue.Failed())
{
return new Exceptional<Vertex>(extractedValue);
}
_Vertex.AddAttribute(SpecialTypeAttribute_REVISION.AttributeName, extractedValue.Value.GetReadoutValue());
}
#endregion
#endregion
return new Exceptional<Vertex>(_Vertex);
}
public Exceptional<DBObjectStream> LoadDBObject(ObjectLocation myObjectLocation)
{
var _DBExceptional = new Exceptional<DBObjectStream>();
var _GetObjectExceptional = _IGraphFSSession.GetFSObject<DBObjectStream>(myObjectLocation, DBConstants.DBOBJECTSTREAM, null, null, 0, false);
if (_GetObjectExceptional == null || _GetObjectExceptional.Failed() || _GetObjectExceptional.Value == null)
{
return _GetObjectExceptional.Convert<DBObjectStream>().PushIErrorT(new Error_LoadObject(myObjectLocation));
}
_DBExceptional.Value = _GetObjectExceptional.Value;
return _DBExceptional;
}
/// <summary>
/// Get attribute assignments for new DBObjects.
/// </summary>
/// <param name="myAttributeAssigns">The interesting ParseTreeNode.</param>
/// <param name="typeManager">The TypeManager of the GraphDB.</param>
/// <returns>A Dictionary of AttributeAssignments</returns>
private Exceptional<ManipulationAttributes> GetRecursiveAttributes(List<AAttributeAssignOrUpdate> myAttributeAssigns, DBContext myDBContext, GraphDBType myGraphDBType)
{
#region Data
var manipulationAttributes = new ManipulationAttributes();
var resultExcept = new Exceptional<ManipulationAttributes>();
if (myAttributeAssigns == null)
{
return new Exceptional<ManipulationAttributes>(manipulationAttributes);
}
TypeAttribute attr;
ADBBaseObject typedAttributeValue;
BasicType correspondingCSharpType;
Warning_UndefinedAttribute undefAttrWarning = null;
var typeMandatoryAttribs = myGraphDBType.GetMandatoryAttributesUUIDs(myDBContext.DBTypeManager);
var setExcept = myDBContext.DBSettingsManager.GetSetting(SettingUndefAttrBehaviour.UUID, myDBContext, TypesSettingScope.DB);
if (!setExcept.Success())
{
return new Exceptional<ManipulationAttributes>(setExcept);
}
var undefAttrBehave = (SettingUndefAttrBehaviour)setExcept.Value;
#endregion
#region get Data
#region proceed list
foreach (var aAttributeAssign in myAttributeAssigns)
{
var validateResult = aAttributeAssign.AttributeIDChain.Validate(myDBContext, true);
if (validateResult.Failed())
{
return new Exceptional<ManipulationAttributes>(validateResult);
}
#region Undefined attributes - Refactor and add undefined logic into defined attribute AssignsOrUpdate
System.Diagnostics.Debug.Assert(aAttributeAssign.AttributeIDChain != null);
//in this case we have an undefined attribute
if (aAttributeAssign.AttributeIDChain.IsUndefinedAttribute)
{
var UndefAttrName = aAttributeAssign.AttributeIDChain.UndefinedAttribute;
switch (undefAttrBehave.Behaviour)
{
case UndefAttributeBehaviour.disallow:
return new Exceptional<ManipulationAttributes>(new Error_UndefinedAttributes());
case UndefAttributeBehaviour.warn:
if (undefAttrWarning == null)
{
undefAttrWarning = new Warning_UndefinedAttribute();
}
resultExcept.PushIWarning(undefAttrWarning);
break;
}
if (aAttributeAssign is AttributeAssignOrUpdateList)
{
#region AttributeAssignCollection
var colDefinition = (aAttributeAssign as AttributeAssignOrUpdateList).CollectionDefinition;
EdgeTypeListOfBaseObjects valueList = new EdgeTypeListOfBaseObjects();
foreach (var tuple in colDefinition.TupleDefinition)
{
if (tuple.TypeOfValue == BasicType.Unknown)
valueList.Add((tuple.Value as ValueDefinition).Value);
else if (tuple.Value is ValueDefinition)
valueList.Add((tuple.Value as ValueDefinition).Value);
else
return new Exceptional<ManipulationAttributes>(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
if (colDefinition.CollectionType == CollectionType.Set)
valueList.UnionWith(valueList);
manipulationAttributes.UndefinedAttributes.Add(UndefAttrName, valueList);
var undefAttr = new UndefinedAttributeDefinition() { AttributeName = UndefAttrName, AttributeValue = valueList };
var undefAttrAssign = new AttributeAssignOrUpdateUndefined((aAttributeAssign as AttributeAssignOrUpdateList).AttributeIDChain, undefAttr);
manipulationAttributes.AttributeToUpdateOrAssign.Add(undefAttrAssign);
#endregion
}
else if (aAttributeAssign is AttributeAssignOrUpdateValue)
{
#region AttributeAssignValue
var value = GraphDBTypeMapper.GetBaseObjectFromCSharpType((aAttributeAssign as AttributeAssignOrUpdateValue).Value);
manipulationAttributes.UndefinedAttributes.Add(UndefAttrName, value);
var undefAttr = new UndefinedAttributeDefinition() { AttributeName = UndefAttrName, AttributeValue = value };
var undefAttrAssign = new AttributeAssignOrUpdateUndefined((aAttributeAssign as AttributeAssignOrUpdateValue).AttributeIDChain, undefAttr);
manipulationAttributes.AttributeToUpdateOrAssign.Add(undefAttrAssign);
#endregion
}
else if (aAttributeAssign is AttributeAssignOrUpdateSetRef)
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidReferenceAssignmentOfUndefAttr());
}
else
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidUndefinedAttributeName());
}
continue;
}
#endregion
attr = aAttributeAssign.AttributeIDChain.LastAttribute;
manipulationAttributes.AttributeToUpdateOrAssign.Add(aAttributeAssign);
#region checks
if (aAttributeAssign.AttributeIDChain.LastType != myGraphDBType)
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidAttribute(aAttributeAssign.AttributeIDChain.ToString()));
}
if (attr.GetDBType(myDBContext.DBTypeManager).IsBackwardEdge)
{
return new Exceptional<ManipulationAttributes>(new Error_Logic("Adding values to BackwardEdges Attributes are not allowed! (" + attr.Name + ") is an BackwardEdge Attribute of GraphType \"" + myGraphDBType.Name + "\"."));
}
#endregion
#region SpecialTypeAttribute
if (attr is ASpecialTypeAttribute)
{
if (!(aAttributeAssign is AttributeAssignOrUpdateValue))
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidAttributeValue((attr as ASpecialTypeAttribute).Name, aAttributeAssign.ToString()));
}
manipulationAttributes.SpecialTypeAttributes.Add((attr as ASpecialTypeAttribute), (aAttributeAssign as AttributeAssignOrUpdateValue).Value);
continue;
}
#endregion
#region check & add
if (aAttributeAssign.AttributeIDChain.Edges.Count > 1)
{
//in case of those statements: INSERT INTO Flower VALUES (Colors.Name = 'red')
//Colors.Name is an IDNode with 2 Edges. This is not possible.
return new Exceptional<ManipulationAttributes>(new Error_Logic("Invalid attribute assignment : " + aAttributeAssign.AttributeIDChain.ToString() + " = " + aAttributeAssign));
}
if (aAttributeAssign is AttributeAssignOrUpdateList)
{
#region SetOfDBObjects
#region Check, whether this is valid for SetOfDBObjects
if (attr.KindOfType != KindsOfType.SetOfReferences)
{
if (attr.KindOfType != KindsOfType.ListOfNoneReferences)
{
if (attr.KindOfType != KindsOfType.SetOfNoneReferences)
{
return new Exceptional<ManipulationAttributes>(new Error_ReferenceAssignmentExpected(attr));//"Please use SETREF keyword instead of REF/REFERENCE or LISTOF."));
}
}
}
#endregion
#region list stuff
#region process tuple
#region process as list
var collectionDefinition = ((AttributeAssignOrUpdateList)aAttributeAssign).CollectionDefinition;
var dbType = attr.GetDBType(myDBContext.DBTypeManager);
if (dbType.IsUserDefined)
{
#region List of references
var uuids = collectionDefinition.GetEdge(attr, dbType, myDBContext);
if (uuids.Failed())
{
return new Exceptional<ManipulationAttributes>(uuids);
}
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, dbType), uuids.Value);
if (typeMandatoryAttribs.Contains(attr.UUID))
{
manipulationAttributes.MandatoryAttributes.Add(attr.UUID);
}
#endregion
}
else
{
#region List of ADBBaseObjects (Integer, String, etc)
var edge = (aAttributeAssign as AttributeAssignOrUpdateList).GetBasicList(myDBContext);
if (edge.Failed())
{
return new Exceptional<ManipulationAttributes>(edge);
}
// If the collection was declared as a SETOF insert
if (collectionDefinition.CollectionType == CollectionType.Set)
edge.Value.Distinction();
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, attr.GetDBType(myDBContext.DBTypeManager)), edge.Value);
if (typeMandatoryAttribs.Contains(attr.UUID))
{
manipulationAttributes.MandatoryAttributes.Add(attr.UUID);
}
#endregion
}
#endregion
#endregion
#endregion
#endregion
}
else if (aAttributeAssign is AttributeAssignOrUpdateSetRef)
{
#region reference
var aSetRefNode = ((AttributeAssignOrUpdateSetRef)aAttributeAssign).SetRefDefinition;
var singleedge = aSetRefNode.GetEdge(attr, myDBContext, attr.GetRelatedType(myDBContext.DBTypeManager));
if (singleedge.Failed())
{
return new Exceptional<ManipulationAttributes>(singleedge);
}
if (attr.GetRelatedType(myDBContext.DBTypeManager).IsUserDefined)
{
//a list which carries elements of userdefined types consists of GUIDS
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, attr.GetDBType(myDBContext.DBTypeManager)), singleedge.Value);
if (typeMandatoryAttribs.Contains(attr.UUID))
{
manipulationAttributes.MandatoryAttributes.Add(attr.UUID);
}
}
else
{
return new Exceptional<ManipulationAttributes>(new Error_UnknownDBError("Reference types cannot be basic types."));
}
#endregion
}
else if (aAttributeAssign is AttributeAssignOrUpdateExpression)
{
#region Expression
(aAttributeAssign as AttributeAssignOrUpdateExpression).BinaryExpressionDefinition.Validate(myDBContext);
var value = (aAttributeAssign as AttributeAssignOrUpdateExpression).BinaryExpressionDefinition.ResultValue;
if (value.Failed())
{
return new Exceptional<ManipulationAttributes>(value.IErrors.First());
}
if (value.Value is ValueDefinition)
{
#region AtomValue
if (attr.KindOfType == KindsOfType.SetOfReferences || attr.KindOfType == KindsOfType.ListOfNoneReferences || attr.KindOfType == KindsOfType.SetOfNoneReferences)
return new Exceptional<ManipulationAttributes>(new Error_InvalidTuple(aAttributeAssign.ToString()));
if (!(value.Value as ValueDefinition).IsDefined)
{
(value.Value as ValueDefinition).ChangeType(attr.GetDBType(myDBContext.DBTypeManager).UUID);
}
var val = (value.Value as ValueDefinition).Value.Value;
correspondingCSharpType = GraphDBTypeMapper.ConvertGraph2CSharp(attr, attr.GetDBType(myDBContext.DBTypeManager));
if (GraphDBTypeMapper.GetEmptyGraphObjectFromType(correspondingCSharpType).IsValidValue(val))
{
typedAttributeValue = GraphDBTypeMapper.GetGraphObjectFromType(correspondingCSharpType, val);
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, attr.GetDBType(myDBContext.DBTypeManager)), typedAttributeValue);
if (typeMandatoryAttribs.Contains(attr.UUID))
manipulationAttributes.MandatoryAttributes.Add(attr.UUID);
}
else
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidAttributeValue(attr.Name, (aAttributeAssign as AttributeAssignOrUpdateValue).Value));
}
#endregion
}
else // TupleValue!
{
#region TupleValue
if (attr.KindOfType != KindsOfType.SetOfReferences)
return new Exceptional<ManipulationAttributes>(new Error_InvalidTuple(aAttributeAssign.ToString()));
if (!(attr.EdgeType is IBaseEdge))
return new Exceptional<ManipulationAttributes>(new Error_InvalidEdgeType(attr.EdgeType.GetType(), typeof(IBaseEdge)));
correspondingCSharpType = GraphDBTypeMapper.ConvertGraph2CSharp(attr, attr.GetDBType(myDBContext.DBTypeManager));
if ((value.Value as TupleDefinition).TypeOfOperatorResult != correspondingCSharpType)
return new Exceptional<ManipulationAttributes>(new Error_DataTypeDoesNotMatch(correspondingCSharpType.ToString(), (value.Value as TupleDefinition).TypeOfOperatorResult.ToString()));
var edge = attr.EdgeType.GetNewInstance() as IBaseEdge;
edge.AddRange((value.Value as TupleDefinition).Select(te => (te.Value as ValueDefinition).Value));
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, attr.GetDBType(myDBContext.DBTypeManager)), edge as IBaseEdge);
#endregion
}
#endregion
}
else if (aAttributeAssign is AttributeAssignOrUpdateValue)
{
#region Simple value
var attrVal = aAttributeAssign as AttributeAssignOrUpdateValue;
if (attr.KindOfType == KindsOfType.ListOfNoneReferences)
return new Exceptional<ManipulationAttributes>(new Error_InvalidTuple(attrVal.ToString()));
correspondingCSharpType = GraphDBTypeMapper.ConvertGraph2CSharp(attr, attr.GetDBType(myDBContext.DBTypeManager));
if (GraphDBTypeMapper.GetEmptyGraphObjectFromType(correspondingCSharpType).IsValidValue(attrVal.Value))
{
typedAttributeValue = GraphDBTypeMapper.GetGraphObjectFromType(correspondingCSharpType, attrVal.Value);
manipulationAttributes.Attributes.Add(new TypeAndAttributeDefinition(attr, attr.GetDBType(myDBContext.DBTypeManager)), typedAttributeValue);
if (typeMandatoryAttribs.Contains(attr.UUID))
manipulationAttributes.MandatoryAttributes.Add(attr.UUID);
}
else
{
return new Exceptional<ManipulationAttributes>(new Error_InvalidAttributeValue(attr.Name, attrVal.Value));
}
#endregion
}
else
{
return new Exceptional<ManipulationAttributes>(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
#endregion
}
#endregion
#endregion
resultExcept.Value = manipulationAttributes;
return resultExcept;
}