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source: stable/HeuristicLab.Core/3.3/Constraints/ComparisonConstraint.cs @ 18151

Last change on this file since 18151 was 17181, checked in by swagner, 5 years ago

#2875: Merged r17180 from trunk to stable

File size: 3.9 KB
RevLine 
[3592]1#region License Information
2/* HeuristicLab
[17181]3 * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
[3592]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;
[4722]24using HeuristicLab.Common;
[17097]25using HEAL.Attic;
[3592]26
[3602]27namespace HeuristicLab.Core {
[17097]28  [StorableType("6FCBEAF5-62A1-48F9-B1A8-F81D4B15A4AE")]
[3592]29  [Item("ComparisonConstraint", "A constraint which checks for specified compare operation.")]
30  public class ComparisonConstraint : Constraint {
[3602]31    [StorableConstructor]
[17097]32    protected ComparisonConstraint(StorableConstructorFlag _) : base(_) { }
[4722]33    protected ComparisonConstraint(ComparisonConstraint original, Cloner cloner) : base(original, cloner) { }
[4153]34    public ComparisonConstraint() : base() { }
[3602]35    public ComparisonConstraint(IItem constrainedValue, ConstraintOperation comparisonOperation, object comparisonValue)
36      : base(constrainedValue, comparisonOperation, comparisonValue) {
37    }
38    public ComparisonConstraint(IItem constrainedValue, ConstraintOperation comparisonOperation, object comparisonValue, bool active)
[11137]39      : base(constrainedValue, comparisonOperation, comparisonValue, active) {
[3602]40    }
[3592]41
[3602]42    public override IEnumerable<ConstraintOperation> AllowedConstraintOperations {
[3630]43      get { return new ConstraintOperation[6] { ConstraintOperation.Less, ConstraintOperation.LessOrEqual, ConstraintOperation.Equal, ConstraintOperation.GreaterOrEqual, ConstraintOperation.Greater, ConstraintOperation.NotEqual }; }
[3592]44    }
45
[4722]46    public override IDeepCloneable Clone(Cloner cloner) {
47      return new ComparisonConstraint(this, cloner);
48    }
49
[3592]50    protected override bool Check(object constrainedMember) {
[3602]51      if (constrainedMember == null)
52        return false;
53
[3592]54      IComparable comparableMember = constrainedMember as IComparable;
55      if (comparableMember == null)
56        throw new InvalidOperationException("Constrained member must be of type IComparable to be used with ComparisonConstraint.");
57
[3602]58      int compareResult = comparableMember.CompareTo(this.ConstraintData);
[3592]59      bool result = false;
[3630]60      if (this.ConstraintOperation == ConstraintOperation.Less)
[3592]61        result = compareResult < 0;
[3630]62      else if (this.ConstraintOperation == ConstraintOperation.LessOrEqual)
[3592]63        result = compareResult <= 0;
[3602]64      else if (this.ConstraintOperation == ConstraintOperation.Equal)
[3592]65        result = compareResult == 0;
[3602]66      else if (this.ConstraintOperation == ConstraintOperation.GreaterOrEqual)
[3592]67        result = compareResult >= 0;
[3602]68      else if (this.ConstraintOperation == ConstraintOperation.Greater)
[3592]69        result = compareResult > 0;
[3602]70      else if (this.ConstraintOperation == ConstraintOperation.NotEqual)
[3592]71        result = compareResult != 0;
72      else
[3602]73        throw new InvalidOperationException("Constraint operation " + this.ConstraintOperation + " is not defined for ComparisonConstraint.");
[3592]74
75      return result;
76    }
[3602]77
78    protected override bool Check(object constrainedMember, out string errorMessage) {
79      bool result = Check(constrainedMember);
80      errorMessage = string.Empty;
81      if (!result)
82        errorMessage = constrainedMember.ToString() + " must be " + ConstraintOperation.ToString() + " than " + ConstraintData.ToString() + ".";
83      return result;
84    }
[3592]85  }
86}
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