public Exceptional<Boolean> CheckUniqueConstraint(GraphDBType myGraphType, IEnumerable<GraphDBType> myParentTypes, Dictionary<AttributeUUID, IObject> toBeCheckedForUniqueConstraint)
{
var UniqueAttributes = myGraphType.GetAllUniqueAttributes(true, _DBContext.DBTypeManager);
if (!UniqueAttributes.IsNullOrEmpty())
{
var dbObjectAttributes = (from aAttribute in toBeCheckedForUniqueConstraint where UniqueAttributes.Contains(aAttribute.Key) select aAttribute);
if (dbObjectAttributes.Count() != 0)
{
AAttributeIndex AttrIndex = null;
foreach (var PType in myParentTypes)
{
AttrIndex = PType.FindUniqueIndex();
if (AttrIndex != null)
{
var toBeCheckedIdxKey = GenerateIndexKeyForUniqueConstraint(toBeCheckedForUniqueConstraint, AttrIndex.IndexKeyDefinition, myGraphType);
if (AttrIndex.Contains(toBeCheckedIdxKey, PType, _DBContext))
{
return new Exceptional<Boolean>(new Error_UniqueConstrainViolation(PType.Name, AttrIndex.IndexName));
}
}
}
}
}
return new Exceptional<Boolean>(true);
}
