ln.http.resources/collections/IEntityCollectionInterface.cs

using System;
using System.Collections.Generic;
using System.Collections;
namespace ln.http.resources.collections
{
    public interface IEntityCollectionInterface<TENTITY,TIDENT>
    {
        IEnumerable<TENTITY> List();
        // ToDo: IEnumerable<TVALUE> Query(/* Filter expressions ?! */);

        TENTITY CreateEntity();
        TIDENT GetIdentity(TENTITY entity);

        bool StoreEntity(TENTITY entity);
        TENTITY GetEntity(TIDENT identity);
        bool RemoveEntity(TIDENT identity);

        string GetLastErrorMessage();
    }
}