/// <summary>
/// Returns descendent relations
/// </summary>
/// <param name="repo">The repository to recusively select child relations from</param>
/// <param name="ancestorId"></param>
/// <param name="relationType"></param>
/// <returns></returns>
public IEnumerable <IRelationById> PerformGetDescendentRelations(ICoreReadonlyRelationsRepository repo, HiveId ancestorId, RelationType relationType = null)
{
var childRelations = repo.GetChildRelations(ancestorId, relationType).ToArray();
return(childRelations.SelectRecursive(x =>
{
var childRelationsSub = repo.GetChildRelations(x.DestinationId, relationType).ToArray();
return childRelationsSub;
}));
}
public static Func <HiveId, RelationProxyBucket> CreateGroupRelationLazyLoadDelegate(ICoreReadonlyRelationsRepository providerSession, HiveId id)
{
var idCopy = id;
return(x =>
{
var parents = providerSession.GetParentRelations(idCopy).Select(y => new RelationById(y.SourceId, y.DestinationId, y.Type, y.Ordinal, y.MetaData.ToArray()));
var children = providerSession.GetChildRelations(idCopy).Select(y => new RelationById(y.SourceId, y.DestinationId, y.Type, y.Ordinal, y.MetaData.ToArray()));
return new RelationProxyBucket(parents, children);
});
}
public static IEnumerable <IRelationById> GetRelations(this ICoreReadonlyRelationsRepository session, HiveId sourceId, Direction direction, RelationType relationType = null)
{
switch (direction)
{
case Direction.Ancestors:
return(session.GetAncestorRelations(sourceId, relationType));
case Direction.Children:
return(session.GetChildRelations(sourceId, relationType));
case Direction.Descendents:
return(session.GetDescendentRelations(sourceId, relationType));
case Direction.Parents:
return(session.GetParentRelations(sourceId, relationType));
}
return(Enumerable.Empty <IReadonlyRelation <IRelatableEntity, IRelatableEntity> >());
}
public static IEnumerable <IRelationById> GetChildRelations(this ICoreReadonlyRelationsRepository session, IRelatableEntity parent, RelationType relationType = null)
{
Mandate.ParameterNotNull(parent, "parent");
return(session.GetChildRelations(parent.Id, relationType));
}
