/// <summary>
/// Resolves a collection of document references.
/// Collection name of the referenced documents must be specified, database name is ignored.
/// </summary>
public static IReadOnlyCollection <T> LoadAll <T>(this DocRefList <T> docRef, IMongoDatabase database)
{
if (string.IsNullOrEmpty(docRef.Collection))
{
throw new InvalidOperationException($"The DocRef does not specify the collection of the referenced document. Try Load(IMongoCollection).");
}
return(docRef.LoadAll(database.GetCollection <T>(docRef.Collection)));
}
/// <summary>
/// Resolves a collection of document references. Collection name and database name are ignored.
/// </summary>
public static IReadOnlyCollection <T> LoadAll <T>(this DocRefList <T> docRef, IMongoCollection <T> collection)
{
// Less efficient approach, preserves ordering
return(docRef.Ids
.Select(id => collection.Find(Builders <T> .Filter.Eq("_id", id)).First())
.ToList());
// Simple, efficient approach (unfortunately doesn't preserve ordering):
// return collection.Find(Builders<T>.Filter.In("_id", docRef.Ids)).ToList();
}