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source: branches/Persistence Test/HeuristicLab.Communication.Operators/3.2/DataStreamFinisher.cs @ 4498

Last change on this file since 4498 was 1529, checked in by gkronber, 16 years ago

Moved source files of plugins AdvancedOptimizationFrontEnd ... Grid into version-specific sub-folders. #576

File size: 2.2 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.Text;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Communication.Data;
28
29namespace HeuristicLab.Communication.Operators {
30  public class DataStreamFinisher : OperatorBase {
31    public override string Description {
32      get {
33        return @"TODO";
34      }
35    }
36
37    public DataStreamFinisher() {
38      AddVariableInfo(new VariableInfo("DataStream", "", typeof(IDataStream), VariableKind.Deleted));
39    }
40
41    public override IOperation Apply(IScope scope) {
42      IDataStream datastream = GetVariableValue<IDataStream>("DataStream", scope, true);
43
44      datastream.Write("REQUEST_CLOSE");
45      string response = datastream.Read();
46      if (!response.Equals("REQUEST_CLOSE")) throw new InvalidOperationException("ERROR in DataStreamFinisher: Closing connection was denied");
47      datastream.Write("ACK");
48      response = datastream.Read();
49      if (!response.Equals("ACK")) throw new InvalidOperationException("ERROR in DataStreamFinisher: Closing connection was denied");
50      datastream.Close();
51
52      IVariableInfo info = GetVariableInfo("DataStream");
53      if (info.Local)
54        RemoveVariable(info.ActualName);
55      else
56        scope.RemoveVariable(scope.TranslateName(info.FormalName));
57
58      return null;
59    }
60  }
61}
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