private TypedRelations GetGenericRelations(RelationType relationType, Entity entity)
{
Expression <Func <Relation, bool> > relationSelector = r => r.SubjectiveEntityId == entity.Id;
if (relationType.IsSymmetric)
{
relationSelector = r => r.SubjectiveEntityId == entity.Id || r.ObjectiveEntityId == entity.Id;
}
else if (relationType.IsInverse)
{
relationSelector = r => r.ObjectiveEntityId == entity.Id;
}
// The relationType.Id may be nagative in case of inverse relations, but it is positive in the database.
IQueryable <Relation> relationsQuery = Db.Relations.Where(r => r.RelationTypeId == Math.Abs(relationType.Id));
relationsQuery = relationsQuery.Where(relationSelector);
// Retrieve all the relations and store them into the helper structure.
Dictionary <long, List <Relation> > relationsByRelatedEntityIds = new Dictionary <long, List <Relation> > ();
foreach (Relation relation in relationsQuery)
{
long relatedEntityId = relation.SubjectiveEntityId == entity.Id ? relation.ObjectiveEntityId : relation.SubjectiveEntityId;
if (!relationsByRelatedEntityIds.ContainsKey(relatedEntityId))
{
relationsByRelatedEntityIds[relatedEntityId] = new List <Relation> ();
}
relationsByRelatedEntityIds[relatedEntityId].Add(relation);
}
TypedRelations genericRelations = new TypedRelations(relationType);
IEntityModel entityModel = RemoteFacade.Instance.GetEntityModel(relationType.ObjectiveEntityType, Db);
foreach (Entity relatedEntity in entityModel.GetEntitiesByIds(relationsByRelatedEntityIds.Keys))
{
foreach (Relation relation in relationsByRelatedEntityIds[relatedEntity.Id])
{
genericRelations.Relations[relation] = relatedEntity;
}
}
return(genericRelations);
}
private TypedRelations GetGenericRelations(RelationType relationType, Entity entity)
{
Expression<Func<Relation, bool>> relationSelector = r => r.SubjectiveEntityId == entity.Id;
if (relationType.IsSymmetric)
{
relationSelector = r => r.SubjectiveEntityId == entity.Id || r.ObjectiveEntityId == entity.Id;
}
else if (relationType.IsInverse)
{
relationSelector = r => r.ObjectiveEntityId == entity.Id;
}
// The relationType.Id may be nagative in case of inverse relations, but it is positive in the database.
IQueryable<Relation> relationsQuery = Db.Relations.Where (r => r.RelationTypeId == Math.Abs (relationType.Id));
relationsQuery = relationsQuery.Where (relationSelector);
// Retrieve all the relations and store them into the helper structure.
Dictionary<long, List<Relation>> relationsByRelatedEntityIds = new Dictionary<long, List<Relation>> ();
foreach (Relation relation in relationsQuery)
{
long relatedEntityId = relation.SubjectiveEntityId == entity.Id ? relation.ObjectiveEntityId : relation.SubjectiveEntityId;
if (!relationsByRelatedEntityIds.ContainsKey (relatedEntityId))
{
relationsByRelatedEntityIds[relatedEntityId] = new List<Relation> ();
}
relationsByRelatedEntityIds[relatedEntityId].Add (relation);
}
TypedRelations genericRelations = new TypedRelations (relationType);
IEntityModel entityModel = RemoteFacade.Instance.GetEntityModel (relationType.ObjectiveEntityType, Db);
foreach (Entity relatedEntity in entityModel.GetEntitiesByIds (relationsByRelatedEntityIds.Keys))
{
foreach (Relation relation in relationsByRelatedEntityIds[relatedEntity.Id])
{
genericRelations.Relations[relation] = relatedEntity;
}
}
return genericRelations;
}