source: branches/HeuristicLab.EvolutionTracking/HeuristicLab.EvolutionTracking/3.4/GenealogyGraph/GenealogyGraph.cs @ 11257

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.EvolutionTracking {
  [StorableClass]
  [Item("GenealogyGraph", "A class representing a genealogy graph")]
  public class GenealogyGraph : DirectedGraph, IGenealogyGraph {
    [Storable]
    private readonly Dictionary<object, IGenealogyGraphNode> contentMap;

    [Storable]
    private readonly Dictionary<string, IGenealogyGraphNode> idMap;

    [Storable]
    private Dictionary<double, List<IGenealogyGraphNode>> ranks; // use a linked list for fast insertion/removal
    public Dictionary<double, List<IGenealogyGraphNode>> Ranks {
      get { return ranks; }
      set { ranks = value; }
    }

    protected GenealogyGraph(GenealogyGraph original, Cloner cloner)
      : base(original, cloner) {
      Ranks = new Dictionary<double, List<IGenealogyGraphNode>>(original.Ranks);
      contentMap = new Dictionary<object, IGenealogyGraphNode>(original.contentMap);
      idMap = new Dictionary<string, IGenealogyGraphNode>(original.idMap);
    }

    public override IDeepCloneable Clone(Cloner cloner) {
      return new GenealogyGraph(this, cloner);
    }

    [StorableConstructor]
    protected GenealogyGraph(bool deserializing) : base(deserializing) { }
    public GenealogyGraph() {
      Ranks = new Dictionary<double, List<IGenealogyGraphNode>>();
      contentMap = new Dictionary<object, IGenealogyGraphNode>();
      idMap = new Dictionary<string, IGenealogyGraphNode>();
    }

    public new IEnumerable<IGenealogyGraphNode> Vertices {
      get { return from n in base.Vertices select (IGenealogyGraphNode)n; }
    }

    public override IArc AddArc(IVertex source, IVertex target) {
      var arc = new GenealogyGraphArc((IGenealogyGraphNode)source, (IGenealogyGraphNode)target);
      base.AddArc(arc);
      return arc;
    }

    public override void AddVertex(IVertex vertex) {
      base.AddVertex(vertex);
      var node = (IGenealogyGraphNode)vertex;
      if (!Ranks.ContainsKey(node.Rank))
        Ranks[node.Rank] = new List<IGenealogyGraphNode>();
      Ranks[node.Rank].Add(node);

      if (contentMap.ContainsKey(node.Data))
        throw new InvalidOperationException("Duplicate content is not allowed in the genealogy graph.");
      contentMap[node.Data] = node;

      if (idMap.ContainsKey(node.Id))
        throw new InvalidOperationException("Duplicate content is not allowed in the genealogy graph.");
      idMap[node.Id] = node;
    }

    public override void RemoveVertex(IVertex vertex) {
      var node = (IGenealogyGraphNode)vertex;
      contentMap.Remove(node.Data);
      idMap.Remove(node.Id);
      if (Ranks.ContainsKey(node.Rank)) {
        Ranks[node.Rank].Remove(node);
        if (!Ranks[node.Rank].Any())
          Ranks.Remove(node.Rank);
      }
      base.RemoveVertex(vertex);
    }

    public IGenealogyGraphNode GetByContent(object content) {
      IGenealogyGraphNode result;
      contentMap.TryGetValue(content, out result);
      return result;
    }

    public IGenealogyGraphNode GetById(string id) {
      IGenealogyGraphNode result;
      idMap.TryGetValue(id, out result);
      return result;
    }

    public bool Contains(object content) {
      return contentMap.ContainsKey(content);
    }

    public event EventHandler GraphUpdated;
    private void OnGraphUpdated(object sender, EventArgs args) {
      var updated = GraphUpdated;
      if (updated != null) updated(sender, args);
    }

    public override void Clear() {
      base.Clear();
      ranks.Clear();
    }
  }

  [Item("GenealogyGraph", "A specialization of the genealogy graph with T as content for vertices")]
  [StorableClass]
  public class GenealogyGraph<T> : GenealogyGraph, IGenealogyGraph<T> where T : class, IItem {
    public new IEnumerable<IGenealogyGraphNode<T>> Vertices {
      get { return base.Vertices.Cast<IGenealogyGraphNode<T>>(); }
    }
  }
}