internal static IEnumerable <IRelationById> GetDescendentRelations(this IEnumerable <IReadonlyProviderRelationsRepository> session, HiveId ancestorId, Uri idRoot, RelationType relationType = null)
{
var totalOutput = new HashSet <IRelationById>();
foreach (var readonlyRelationsRepository in session)
{
if (readonlyRelationsRepository.CanReadRelations)
{
readonlyRelationsRepository.GetDescendentRelations(ancestorId, relationType)
.SkipWhile(SkipAndMergeRelationsFromProviders(readonlyRelationsRepository.ProviderMetadata, totalOutput))
.ForEach(x => totalOutput.Add(x));
}
}
return(totalOutput.Distinct().Select(x => GroupSessionHelper.CreateRelationByAbsoluteId(x, idRoot)));
}
internal static IRelationById FindRelation(this IEnumerable <IReadonlyProviderRelationsRepository> sessions, HiveId sourceId, HiveId destinationId, Uri idRoot, RelationType relationType = null)
{
IRelationById result = null;
foreach (var readonlyRelationsRepository in sessions)
{
if (readonlyRelationsRepository.CanReadRelations)
{
result = readonlyRelationsRepository.FindRelation(sourceId, destinationId, relationType);
}
if (result != null)
{
break;
}
}
return(GroupSessionHelper.CreateRelationByAbsoluteId(result, idRoot));
}
internal static IEnumerable <IRelationById> GetAncestorRelations(this IEnumerable <IReadonlyProviderRelationsRepository> allProviderRepositories, HiveId descendentId, Uri idRoot, RelationType relationType = null)
{
var totalOutput = new HashSet <IRelationById>();
foreach (var relationsRepository in allProviderRepositories)
{
if (relationsRepository.CanReadRelations)
{
var provider = relationsRepository;
var relations = relationsRepository.RepositoryScopedCache.GetOrCreateTyped("rprr_GetAncestorRelations_" + descendentId + (relationType != null ? relationType.RelationName : "any_relationtype"),
() => provider.GetAncestorRelations(descendentId, relationType).ToArray());
relations
.SkipWhile(SkipAndMergeRelationsFromProviders(relationsRepository.ProviderMetadata, totalOutput))
.ForEach(x => totalOutput.Add(x));
}
}
return(totalOutput.Distinct().Select(x => GroupSessionHelper.CreateRelationByAbsoluteId(x, idRoot)));
}