source: branches/CEDMA-Refactoring-Ticket419/HeuristicLab.CEDMA.Core/DataSet.cs @ 1129

Last change on this file since 1129 was 1129, checked in by gkronber, 12 years ago

worked on RDF backend. Implemented query support to load datasets. Queries for dispatcher and results still missing. (#419)

File size: 3.2 KB
Line 
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.Linq;
25using System.Text;
26using HeuristicLab.Core;
27using System.Xml;
28using HeuristicLab.CEDMA.DB.Interfaces;
29using HeuristicLab.Operators;
30
31namespace HeuristicLab.CEDMA.Core {
32  public class DataSet : IViewable {
33    public IStore Store { get; set; }
34
35    private Guid guid;
36    public Guid Guid {
37      get { return guid; }
38    }
39
40    private string name;
41    public string Name {
42      get { return name; }
43      set { name = value; }
44    }
45
46    private Problem problem;
47    public Problem Problem {
48      get {
49        // lazy loading of problem from DB
50        if (problem == null) {
51          var serializedDataVar = new HeuristicLab.CEDMA.DB.Interfaces.Variable("SerializedData");
52          var persistedData = Store.Query(
53            new Statement[] { new Statement(new Entity(Ontology.CedmaNameSpace + Guid), Ontology.PredicateSerializedData, serializedDataVar)});
54          if (persistedData.Count() == 1) {
55            Literal persistedLiteral = (Literal)persistedData.First().Get("SerializedData");
56            this.problem = (Problem)PersistenceManager.RestoreFromGZip(Convert.FromBase64String((string)persistedLiteral.Value));
57          } else
58            this.problem = new Problem(); // no entry in the DB => create a new problem
59        }
60        return problem;
61      }
62    }
63
64    public DataSet()
65      : base() {
66      guid = Guid.NewGuid();
67      name = "Data set";
68    }
69
70    public DataSet(IStore store, Entity dataSetEntity)
71      : this() {
72      Store = store;
73      guid = new Guid(dataSetEntity.Uri.Remove(0, Ontology.CedmaNameSpace.Length));
74      name = guid.ToString();
75    }
76
77    public void Activate() {
78      Entity myEntity = new Entity(Ontology.CedmaNameSpace + Guid);
79      Store.Add(new Statement(myEntity, Ontology.PredicateInstanceOf, Ontology.TypeDataSet));
80      Store.Add(new Statement(myEntity, Ontology.PredicateSerializedData, new Literal(Convert.ToBase64String(PersistenceManager.SaveToGZip(problem)))));
81      Store.Add(new Statement(myEntity, Ontology.PredicateName, new Literal(name)));
82    }
83
84    public IView CreateView() {
85      return new DataSetView(this);
86    }
87
88    internal Results GetResults() {
89      Results results = new Results(Store);
90      results.FilterDataSet(new Entity(Ontology.CedmaNameSpace + Guid));
91      return results;
92    }
93  }
94}
Note: See TracBrowser for help on using the repository browser.