source: branches/HeuristicLab.Hive-3.4/sources/HeuristicLab.Clients.Hive/3.4/ServiceClients/HiveItemCollection.cs @ 6039

using System;
using System.Collections.Generic;
using System.Linq;
using HeuristicLab.Common;
using HeuristicLab.Core;

namespace HeuristicLab.Clients.Hive {
  [Item("HiveItem Collection", "Represents a collection of OKB items.")]
  public class HiveItemCollection<T> : ItemCollection<T> where T : class, IHiveItem {
    protected HiveItemCollection(HiveItemCollection<T> original, Cloner cloner) : base(original, cloner) { }
    public HiveItemCollection() : base() { }
    public HiveItemCollection(IEnumerable<T> collection) : base(collection) { }

    public override IDeepCloneable Clone(Cloner cloner) { return new HiveItemCollection<T>(this, cloner); }

    protected override void OnItemsRemoved(IEnumerable<T> items) {
      IEnumerable<T> successful, unsuccessful;
      Exception ex;
      RemoveItems(items, out successful, out unsuccessful, out ex);
      list.AddRange(unsuccessful);
      base.OnItemsRemoved(successful);
      if (ex != null) throw ex;
    }
    protected override void OnCollectionReset(IEnumerable<T> items, IEnumerable<T> oldItems) {
      IEnumerable<T> successful, unsuccessful;
      Exception ex;
      RemoveItems(oldItems, out successful, out unsuccessful, out ex);
      list.AddRange(unsuccessful);
      base.OnCollectionReset(items.Concat(unsuccessful), oldItems);
      if (ex != null) throw ex;
    }

    private void RemoveItems(IEnumerable<T> items, out IEnumerable<T> successful, out IEnumerable<T> unsuccessful, out Exception exception) {
      List<T> removed = new List<T>();
      List<T> notremoved = new List<T>();
      exception = null;
      foreach (T item in items) {
        try {
          ExperimentManagerClient.Delete(item);
          removed.Add(item);
        }
        catch (Exception ex) {
          exception = ex;
          notremoved.Add(item);
        }
      }
      successful = removed;
      unsuccessful = notremoved;
    }
  }
}