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source: trunk/sources/HeuristicLab.Parameters/3.3/SubScopesLookupParameter.cs @ 3157

Last change on this file since 3157 was 3017, checked in by epitzer, 15 years ago

Merge StorableClassType.Empty into StorableClassType.MarkedOnly and make it the default if not specified (#548)

File size: 3.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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 HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
26
27namespace HeuristicLab.Parameters {
28  /// <summary>
29  /// A generic parameter representing instances of type T which are collected from the sub-scopes of the current scope.
30  /// </summary>
31  [Item("SubScopesLookupParameter<T>", "A generic parameter representing instances of type T which are collected from or written to the sub-scopes of the current scope.")]
32  [StorableClass]
33  public class SubScopesLookupParameter<T> : LookupParameter<ItemArray<T>> where T : class, IItem {
34    public SubScopesLookupParameter() : base() { }
35    public SubScopesLookupParameter(string name) : base(name) { }
36    public SubScopesLookupParameter(string name, string description) : base(name, description) { }
37
38    protected override IItem GetActualValue() {
39      string name = LookupParameter<ItemArray<T>>.TranslateName(Name, ExecutionContext);
40      IScope scope = ExecutionContext.Scope;
41      ItemArray<T> values = new ItemArray<T>(scope.SubScopes.Count);
42      IVariable var;
43      T value;
44
45      for (int i = 0; i < values.Length; i++) {
46        scope.SubScopes[i].Variables.TryGetValue(name, out var);
47        if (var != null) {
48          value = var.Value as T;
49          if ((var.Value != null) && (value == null))
50            throw new InvalidOperationException(
51              string.Format("Type mismatch. Variable \"{0}\" does not contain a \"{1}\".",
52                            name,
53                            typeof(T).GetPrettyName())
54            );
55          values[i] = value;
56        }
57      }
58      return values;
59    }
60    protected override void SetActualValue(IItem value) {
61      ItemArray<T> values = value as ItemArray<T>;
62      if (values == null)
63        throw new InvalidOperationException(
64          string.Format("Type mismatch. Value is not a \"{0}\".",
65                        typeof(ItemArray<T>).GetPrettyName())
66        );
67
68      string name = LookupParameter<ItemArray<T>>.TranslateName(Name, ExecutionContext);
69      IScope scope = ExecutionContext.Scope;
70      IVariable var;
71
72      for (int i = 0; i < values.Length; i++) {
73        scope.SubScopes[i].Variables.TryGetValue(name, out var);
74        if (var != null) var.Value = values[i];
75        else scope.SubScopes[i].Variables.Add(new Variable(name, values[i]));
76      }
77    }
78  }
79}
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