protected Exceptional RemoveBackwardEdges(TypeUUID myTypeUUID, Dictionary<AttributeUUID, object> myUserdefinedAttributes, ObjectUUID myObjectUUIDReference, DBContext myDBContext)
{
#region get type that carries the attributes
var aType = myDBContext.DBTypeManager.GetTypeByUUID(myTypeUUID);
#endregion
#region process attributes
foreach (var aUserDefinedAttribute in myUserdefinedAttributes)
{
#region Data
GraphDBType typeOFAttribute = null;
TypeAttribute attributesOfType = null;
#endregion
#region get GraphType of Attribute
attributesOfType = aType.Attributes[aUserDefinedAttribute.Key];
typeOFAttribute = myDBContext.DBTypeManager.GetTypeByUUID(attributesOfType.DBTypeUUID);
#endregion
IEnumerable<Exceptional<DBObjectStream>> listOfObjects;
if (aUserDefinedAttribute.Value is IReferenceEdge)
{
listOfObjects = ((IReferenceEdge)aUserDefinedAttribute.Value).GetAllEdgeDestinations(myDBContext.DBObjectCache);
}
else
{
listOfObjects = myDBContext.DBObjectCache.LoadListOfDBObjectStreams(typeOFAttribute, (HashSet<ObjectUUID>)aUserDefinedAttribute.Value);
}
foreach (var aDBObject in listOfObjects)
{
if (aDBObject.Failed())
{
return new Exceptional(aDBObject);
}
var removeExcept = myDBContext.DBObjectManager.RemoveBackwardEdge(aDBObject.Value, myTypeUUID, aUserDefinedAttribute.Key, myObjectUUIDReference);
if (removeExcept.Failed())
{
return new Exceptional(removeExcept);
}
}
}
#endregion
return Exceptional.OK;
}
public override void Add(ObjectUUID myValue, TypeUUID typeOfDBObjects, params ADBBaseObject[] myParameters)
{
if (!_ObjectUUIDs.ContainsKey(myValue))
{
_ObjectUUIDs.Add(myValue, new Reference(myValue, typeOfDBObjects));
}
}
public EdgeTypeSingleReference(ObjectUUID dbos, TypeUUID myTypeOfDBObject)
{
Debug.Assert(myTypeOfDBObject != null);
if (dbos != null)
{
_ObjectUUID = new Tuple<ObjectUUID, Reference>(dbos, new Reference(dbos, myTypeOfDBObject));
}
}
public ADBSettingsBase(String myName, String myDescription, EntityUUID myOwnerID, TypeUUID myType, ADBBaseObject myDefault, ADBBaseObject myValue)
{
Name = myName;
Description = myDescription;
OwnerID = myOwnerID;
Type = myType;
Default = myDefault;
_Value = myValue;
}
public EdgeTypeSetOfReferences(IEnumerable<ObjectUUID> dbos, TypeUUID typeOfDBObjects)
{
Debug.Assert(typeOfDBObjects != null);
_ObjectUUIDs = new Dictionary<ObjectUUID, Reference>();
if (dbos != null)
{
foreach (var aUUID in dbos)
{
_ObjectUUIDs.Add(aUUID, new Reference(aUUID, typeOfDBObjects));
}
}
}
/// <summary>
/// Loads a DBObject from internal cache structure or GraphFS (if it is not present in cache)
/// </summary>
/// <param name="myType">The type of the DBObject as TypeUUID.</param>
/// <param name="myObjectUUID">The UUID of the DBObject.</param>
/// <returns>A DBObject.</returns>
public Exceptional<DBObjectStream> LoadDBObjectStream(TypeUUID myType, ObjectUUID myObjectUUID)
{
return LoadDBObjectStream(_typeManager.GetTypeByUUID(myType), myObjectUUID);
}
public override void Add(ObjectUUID myValue, TypeUUID typeOfDBObjects, params ADBBaseObject[] myParameters)
{
if (!_ObjectUUIDs.ContainsKey(myValue))
{
var aReference = new Reference(myValue, typeOfDBObjects);
_estimatedSize += aReference.GetEstimatedSize() + EstimatedSizeConstants.CalcUUIDSize(myValue);
_ObjectUUIDs.Add(myValue, aReference);
}
}
public override IReferenceEdge GetNewInstance(IEnumerable<ObjectUUID> iEnumerable, TypeUUID typeOfObjects)
{
return new EdgeTypeSetOfReferences(iEnumerable, typeOfObjects);
}
/// <summary>
/// Adds the typeNode as an asterisk *, rhomb # or minus - or ad
/// </summary>
/// <param name="typeNode"></param>
public Exceptional AddSelectionType(String myReference, GraphDBType myType, TypesOfSelect mySelType, TypeUUID myTypeID = null)
{
var selElem = new SelectionElement(mySelType, myTypeID);
if (!_Selections.ContainsKey(myReference))
_Selections.Add(myReference, new Dictionary<EdgeList, List<SelectionElement>>());
var level = new EdgeList(new EdgeKey(myType.UUID, null));
if (!_Selections[myReference].ContainsKey(level))
_Selections[myReference].Add(level, new List<SelectionElement>());
if (!_Selections[myReference][level].Exists(item => item.Selection == mySelType))
{
_Selections[myReference][level].Add(selElem);
}
return Exceptional.OK;
}
private object Deserialize(ref SerializationReader mySerializationReader, ADBSettingsBase myValue)
{
#region Read Basics
try
{
if (myValue != null)
{
myValue.Name = mySerializationReader.ReadString();
myValue.Description = mySerializationReader.ReadString();
myValue.OwnerID = (EntityUUID)mySerializationReader.ReadObject();
myValue.Type = new TypeUUID(mySerializationReader.ReadByteArray());
myValue.Default.SetValue(mySerializationReader.ReadObject());
myValue._Value.SetValue(mySerializationReader.ReadObject());
}
else
{
Name = mySerializationReader.ReadString();
Description = mySerializationReader.ReadString();
OwnerID = (EntityUUID)mySerializationReader.ReadObject();
Type = new TypeUUID(mySerializationReader.ReadByteArray());
Default.SetValue(mySerializationReader.ReadObject());
_Value.SetValue(mySerializationReader.ReadObject());
}
}
catch (Exception e)
{
throw new GraphFSException_EntityCouldNotBeDeserialized("ADBSetting could not be deserialized!\n\n" + e);
}
#endregion
return myValue;
}
public GraphDBType GetTypeByUUID(TypeUUID myUUID)
{
#region Input Validation
if (myUUID == null)
throw new ArgumentNullException("The parameter myTypeName must not be null!");
#endregion
if (_SystemTypes.ContainsKey(myUUID))
{
return _SystemTypes[myUUID];
}
else
{
if (_BasicTypes.ContainsKey(myUUID))
{
return _BasicTypes[myUUID];
}
else
{
if (_UserDefinedTypes.ContainsKey(myUUID))
{
return _UserDefinedTypes[myUUID];
}
}
}
return null;
}
/// <summary>
/// Internal method for loading a DBObject from GraphFS.
/// </summary>
/// <param name="myType">The Type of the DBObjects as TypeUUID.</param>
/// <param name="myObjectUUID">The UUID of the DBObject.</param>
/// <returns>An DBObject</returns>
private Exceptional<DBObjectStream> LoadDBObjectInternal(TypeUUID myType, ObjectUUID myObjectUUID)
{
return LoadDBObjectInternal(_typeManager.GetTypeByUUID(myType), myObjectUUID);
}
/// <summary> /// Adds a set of ObjectUUID with parameters /// </summary> /// <param name="hashSet"></param> /// <param name="myParameters"></param> public abstract void AddRange(IEnumerable<ObjectUUID> hashSet, TypeUUID typeOfObjects, params ADBBaseObject[] myParameters);
/// <summary>
/// Sets the given setting for a given type within this session
/// </summary>
/// <param name="setting">The setting to be set</param>
/// <param name="typeUUID">The name of the type</param>
/// <returns>True for success</returns>
public Exceptional SetTypeSetting(ADBSettingsBase setting, TypeUUID typeUUID)
{
lock (_SessionSettingsType)
{
if (_SessionSettingsType.ContainsKey(typeUUID))
{
if (_SessionSettingsType[typeUUID].ContainsKey(setting.Name))
{
_SessionSettingsType[typeUUID][setting.Name] = setting;
}
else
{
_SessionSettingsType[typeUUID].Add(setting.Name, setting);
}
}
else
{
_SessionSettingsType.Add(typeUUID, new Dictionary<string, ADBSettingsBase>());
_SessionSettingsType[typeUUID].Add(setting.Name, setting);
}
}
return Exceptional.OK;
}
internal Exceptional AddBackwardEdge(ObjectUUID uuid, TypeUUID typeOfBESource, EdgeKey beEdgeKey, ObjectUUID reference)
{
//load the backward edge
var loadExcept = _DBContext.DBObjectCache.LoadDBBackwardEdgeStream(typeOfBESource, uuid); // LoadBackwardEdge(beLocation);
if (loadExcept.Failed())
{
return new Exceptional(loadExcept);
}
loadExcept.Value.AddBackwardEdge(beEdgeKey, reference, this);
if (loadExcept.Value.isNew)
{
return _IGraphFSSession.StoreFSObject(loadExcept.Value, true);
}
else
{
return loadExcept.Value.Save();
}
}
public override void Add(ObjectUUID myValue, TypeUUID typeOfDBObjects, params ADBBaseObject[] myParameters)
{
if (!myParameters.IsNullOrEmpty())
{
if (weightedSet.DefaultWeight.IsValidValue(myParameters[0].Value))
{
Add(new Reference(myValue, typeOfDBObjects), (DBNumber)weightedSet.DefaultWeight.Clone(myParameters[0].Value), true);//new DBNumber(myParameters[0].Value));
}
else
{
throw new GraphDBException(new Error_DataTypeDoesNotMatch(myParameters[0].Value.GetType().Name, weightedSet.DefaultWeight.ObjectName));
}
}
else
{
Add(new Reference(myValue, typeOfDBObjects), weightedSet.DefaultWeight, true);
}
}
public override IReferenceEdge GetNewInstance(IEnumerable<ObjectUUID> iEnumerable, TypeUUID typeOfObjects)
{
var retEdge = new EdgeTypeWeighted();
foreach (var uuid in iEnumerable)
{
var vals = weightedSet.Get(new Reference(uuid, typeOfObjects)); ;
retEdge.Add(vals.Key, vals.Value);
}
CalcEstimatedSize(retEdge);
return retEdge;
}
public override void AddRange(IEnumerable<ObjectUUID> hashSet, TypeUUID typeOfDBObjects, params ADBBaseObject[] myParameters)
{
if (!myParameters.IsNullOrEmpty())
{
if (weightedSet.DefaultWeight.IsValidValue(myParameters[0].Value))
{
weightedSet.AddRange(hashSet.Select(item => new Reference(item, typeOfDBObjects)), (DBNumber)weightedSet.DefaultWeight.Clone(myParameters[0].Value));
}
else
{
throw new GraphDBException(new Error_DataTypeDoesNotMatch(myParameters[0].Value.GetType().Name, weightedSet.DefaultWeight.ObjectName));
}
}
else
{
weightedSet.AddRange(hashSet.Select(item => new Reference(item, typeOfDBObjects)), weightedSet.DefaultWeight);
}
CalcEstimatedSize(this);
}
/// <summary>
/// This will add all attributes of <paramref name="myDBObject"/> to the <paramref name="myAttributes"/> reference. Reference attributes will be resolved to the <paramref name="myDepth"/>
/// </summary>
/// <param name="myAttributes"></param>
/// <param name="myType"></param>
/// <param name="myDBObject"></param>
/// <param name="myDepth"></param>
/// <param name="myEdgeList"></param>
/// <param name="myReference"></param>
/// <param name="myUsingGraph"></param>
/// <param name="mySelType"></param>
/// <param name="myTypeID"></param>
private void AddAttributesByDBO(ref Dictionary<String, Object> myAttributes, GraphDBType myType, DBObjectStream myDBObject, Int64 myDepth, EdgeList myEdgeList, String myReference, Boolean myUsingGraph, TypesOfSelect mySelType, TypeUUID myTypeID = null)
{
#region Get all attributes which are stored at the DBO
foreach (var attr in myDBObject.GetAttributes())
{
#region Check whether the attribute is still exist in the type - if not, continue
var typeAttr = myType.GetTypeAttributeByUUID(attr.Key);
if (typeAttr == null)
{
continue;
}
#endregion
#region Only attributes of the selected myTypeID (TypesOfSelect.Ad)
if (mySelType == TypesOfSelect.Ad)
{
if (myTypeID != typeAttr.GetDBType(_DBContext.DBTypeManager).UUID)
{
continue;
}
}
#endregion
if (attr.Value is ADBBaseObject)
{
#region Single base object
if (mySelType != TypesOfSelect.Minus && mySelType != TypesOfSelect.Gt && mySelType != TypesOfSelect.Lt)
{
myAttributes.Add(typeAttr.Name, (attr.Value as ADBBaseObject).GetReadoutValue());
}
#endregion
}
else if (attr.Value is IBaseEdge)
{
#region List of base objects
if (mySelType != TypesOfSelect.Minus && mySelType != TypesOfSelect.Gt && mySelType != TypesOfSelect.Lt)
{
myAttributes.Add(typeAttr.Name, (attr.Value as IBaseEdge).GetReadoutValues());
}
#endregion
}
else if (attr.Value is IReferenceEdge)
{
#region Reference edge
if (mySelType == TypesOfSelect.Minus || mySelType == TypesOfSelect.Asterisk || mySelType == TypesOfSelect.Ad || mySelType == TypesOfSelect.Gt)
{
// Since we can define special depth (via setting) for attributes we need to check them now
myDepth = GetDepth(-1, myDepth, myType, typeAttr);
if ((myDepth > 0))
{
myAttributes.Add(typeAttr.Name, ResolveAttributeValue(typeAttr, attr.Value, myDepth, myEdgeList, myDBObject, myReference, myUsingGraph));
}
else
{
myAttributes.Add(typeAttr.Name, GetNotResolvedReferenceAttributeValue(myDBObject, typeAttr, myType, myEdgeList, myUsingGraph, _DBContext));
}
}
#endregion
}
else
{
throw new GraphDBException(new Error_NotImplemented(new System.Diagnostics.StackTrace(true)));
}
}
#endregion
#region Get all backwardEdge attributes
if (mySelType == TypesOfSelect.Minus || mySelType == TypesOfSelect.Asterisk || mySelType == TypesOfSelect.Ad || mySelType == TypesOfSelect.Lt)
{
foreach (var beAttr in GetBackwardEdgeAttributes(myType))
{
if (myDepth > 0)
{
if (mySelType == TypesOfSelect.Ad)
{
if (beAttr.BackwardEdgeDefinition.TypeUUID != myTypeID)
{
continue;
}
}
var bes = myDBObject.GetBackwardEdges(beAttr.BackwardEdgeDefinition, _DBContext, _DBContext.DBObjectCache, beAttr.GetDBType(_DBContext.DBTypeManager));
if (bes.Failed())
throw new GraphDBException(bes.IErrors);
if (bes.Value != null) // otherwise the DBO does not have any
myAttributes.Add(beAttr.Name, ResolveAttributeValue(beAttr, bes.Value, myDepth, myEdgeList, myDBObject, myReference, myUsingGraph));
}
else
{
if (mySelType == TypesOfSelect.Ad)
{
if (beAttr.BackwardEdgeDefinition.TypeUUID != myTypeID)
{
continue;
}
}
var notResolvedBEs = GetNotResolvedBackwardEdgeReferenceAttributeValue(myDBObject, beAttr, beAttr.BackwardEdgeDefinition, myEdgeList, myUsingGraph, _DBContext);
if (notResolvedBEs != null)
{
myAttributes.Add(beAttr.Name, notResolvedBEs);
}
}
}
}
#endregion
#region Get all undefined attributes from DBO
if (mySelType == TypesOfSelect.Asterisk || mySelType == TypesOfSelect.Rhomb)
{
var undefAttrException = myDBObject.GetUndefinedAttributes(_DBContext.DBObjectManager);
if (undefAttrException.Failed())
throw new GraphDBException(undefAttrException.IErrors);
foreach (var undefAttr in undefAttrException.Value)
myAttributes.Add(undefAttr.Key, undefAttr.Value.GetReadoutValue());
}
#endregion
#region Add special attributes
if (mySelType == TypesOfSelect.Asterisk)
{
foreach (var specialAttr in GetSpecialAttributes(myType))
{
if (!myAttributes.ContainsKey(specialAttr.Name))
{
var result = (specialAttr as ASpecialTypeAttribute).ExtractValue(myDBObject, myType, _DBContext);
if (result.Failed())
{
throw new GraphDBException(result.IErrors);
}
myAttributes.Add(specialAttr.Name, result.Value.GetReadoutValue());
}
}
}
#endregion
}
/// <summary>
/// Loads an Enumaration of DBObjects (if possible from internal cache structure).
/// </summary>
/// <param name="myTypeUUID">The Type of the DBObjects as TypeUUID.</param>
/// <param name="myListOfObjectUUID">The list of ObjectsUUIDs.</param>
/// <returns>An Enumeratiuon of DBObjects.</returns>
public IEnumerable<Exceptional<DBObjectStream>> LoadListOfDBObjectStreams(TypeUUID myTypeUUID, IEnumerable<ObjectUUID> myListOfObjectUUID)
{
return LoadListOfDBObjectStreams(_typeManager.GetTypeByUUID(myTypeUUID), myListOfObjectUUID);
}
/// <summary>
/// Internal method for loading a DBBackwardEdge from GraphFS.
/// </summary>
/// <param name="myType">The Type of the DBObjects as TypeUUID.</param>
/// <param name="myObjectUUID">The UUID of the corresponding DBObject.</param>
/// <returns>A BackwardEdge</returns>
private Exceptional<BackwardEdgeStream> LoadDBBackwardEdgeInternal(TypeUUID myType, ObjectUUID myObjectUUID)
{
return LoadDBBackwardEdgeInternal(_typeManager.GetTypeByUUID(myType), myObjectUUID);
}
public abstract IReferenceEdge GetNewInstance(IEnumerable<ObjectUUID> iEnumerable, TypeUUID typeOfObjects);
/// <summary>
/// Returns true, if the type with myClassName baseTypeName is "a" base type to the type with
/// myClassName superTypeName.
/// </summary>
/// <param name="derivedTypeName">The name of the derived class.</param>
/// <param name="superTypeName">The name of the super class.</param>
/// <returns>True, if the super class is a supertype to derived type.</returns>
public Exceptional<Boolean> HasParentType(TypeUUID derivedTypeUUID, TypeUUID superTypeUUID)
{
#region INPUT EXCEPTIONS
if (derivedTypeUUID == null)
return new Exceptional<bool>(new Error_ArgumentNullOrEmpty("UUID of derived type should not be null."));
if (superTypeUUID == null)
return new Exceptional<bool>(new Error_ArgumentNullOrEmpty("UUID of super type should not be null."));
if (GetTypeByUUID(derivedTypeUUID) == null)
return new Exceptional<bool>(new Error_TypeDoesNotExist(""));
if (GetTypeByUUID(superTypeUUID) == null)
return new Exceptional<bool>(new Error_TypeDoesNotExist(""));
#endregion
bool result = false;
GraphDBType derivedType = GetTypeByUUID(derivedTypeUUID);
while (derivedType.ParentTypeUUID != null && !derivedType.UUID.Equals(superTypeUUID))
{
derivedType = GetTypeByUUID(derivedType.ParentTypeUUID);
}
if (derivedType.UUID.Equals(superTypeUUID))
result = true;
return new Exceptional<Boolean>(result);
}
internal Exceptional AddBackwardEdge(ObjectUUID uuid, TypeUUID typeOfBESource, EdgeKey beEdgeKey, ObjectUUID reference)
{
//var beLocation = DBObjectStream.GetObjectLocation(_DBContext.DBTypeManager.GetTypeByUUID(typeOfBESource), uuid);
var loadExcept = _DBContext.DBObjectCache.LoadDBBackwardEdgeStream(typeOfBESource, uuid); // LoadBackwardEdge(beLocation);
if (loadExcept.Failed())
{
return new Exceptional(loadExcept);
}
//EdgeKey tempKey = new EdgeKey(typeUUID, attributeUUID);
loadExcept.Value.AddBackwardEdge(beEdgeKey, reference, this);
if (loadExcept.Value.isNew)
{
return _IGraphFSSession.StoreFSObject(loadExcept.Value, true);
}
else
{
return loadExcept.Value.Save();
}
}
public void Deserialize(byte[] mySerializedData)
{
#region Data
SerializationReader reader;
reader = new SerializationReader(mySerializedData);
#endregion
#region Read Basics
try
{
Name = reader.ReadString();
Description = reader.ReadString();
OwnerID = new EntityUUID(reader.ReadByteArray());
Type = new TypeUUID(reader.ReadByteArray());
Default.SetValue(reader.ReadObject());
_Value.SetValue(reader.ReadObject());
}
catch (Exception e)
{
throw new GraphFSException_EntityCouldNotBeDeserialized("ADBSetting could not be deserialized!\n\n" + e);
}
#endregion
}
public override void AddRange(IEnumerable<ObjectUUID> hashSet, TypeUUID typeOfDBObjects, params ADBBaseObject[] myParameters)
{
foreach (var aUUID in hashSet)
{
if (!_ObjectUUIDs.ContainsKey(aUUID))
{
_ObjectUUIDs.Add(aUUID, new Reference(aUUID, typeOfDBObjects));
}
}
CalcEstimatedSize(this);
}
/// <summary> /// Set the value with some optional parameters /// </summary> /// <param name="myValue">A ObjectUUID</param> /// <param name="myParameters">Some optional parameters</param> public abstract void Set(ObjectUUID myValue, TypeUUID typeOfObjects, params ADBBaseObject[] myParameters);
public override void Deserialize(ref Lib.NewFastSerializer.SerializationReader mySerializationReader)
{
FileSystemLocation = new ObjectLocation(mySerializationReader.ReadString());
IndexEdition = mySerializationReader.ReadString();
IndexName = mySerializationReader.ReadString();
_IsUUIDIndex = mySerializationReader.ReadBoolean();
IndexRelatedTypeUUID = new TypeUUID(ref mySerializationReader);
}
public Exceptional<Boolean> AddBackwardEdge(DBObjectStream aDBObject, TypeUUID uUIDofType, AttributeUUID uUIDofAttribute, ObjectUUID reference)
{
return aDBObject.AddBackwardEdge(uUIDofType, uUIDofAttribute, reference, _DBContext.DBObjectManager);
}
public static ADBBaseObject GetADBBaseObjectFromUUID(TypeUUID myUUID)
{
if (myUUID == DBDouble.UUID)
return new DBDouble();
if (myUUID == DBUInt64.UUID)
return new DBUInt64();
if (myUUID == DBInt64.UUID)
return new DBInt64();
if (myUUID == DBInt32.UUID)
return new DBInt32();
if (myUUID == DBString.UUID)
return new DBString();
if (myUUID == DBDateTime.UUID)
return new DBDateTime();
if (myUUID == DBBoolean.UUID)
return new DBBoolean();
if (myUUID == DBEdge.UUID)
return new DBEdge();
if (myUUID == DBReference.UUID)
return new DBReference();
if (myUUID == DBBaseObject.UUID)
return new DBBaseObject();
throw new GraphDBException(new Error_TypeDoesNotExist(myUUID.ToString()));
}
