Free cookie consent management tool by TermsFeed Policy Generator

source: trunk/sources/HeuristicLab.CEDMA.Operators/SelectSubjectsLiteral.cs @ 1184

Last change on this file since 1184 was 547, checked in by gkronber, 16 years ago

added new operators to add new rdf-statments and to query the stored graph (with statement templates). #261 (Items are stored multiple times in the result entries in the CEDMA DB)

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.Text;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using System.Threading;
28using HeuristicLab.CEDMA.DB.Interfaces;
29using System.ServiceModel;
30using HeuristicLab.CEDMA.Core;
31using HeuristicLab.Operators;
32
33namespace HeuristicLab.CEDMA.Operators {
34  public class SelectSubjectsLiteral : OperatorBase {
35    private static readonly string cedmaNamespace = "http://www.heuristiclab.com/cedma/";
36
37    public override string Description {
38      get { return "TASK."; }
39    }
40
41    public SelectSubjectsLiteral()
42      : base() {
43      AddVariableInfo(new VariableInfo("CedmaServerUri", "Uri of the CEDMA server", typeof(StringData), VariableKind.In));
44      AddVariableInfo(new VariableInfo("Subject", "", typeof(IItem), VariableKind.New));
45      AddVariableInfo(new VariableInfo("Predicate", "", typeof(StringData), VariableKind.In));
46      AddVariableInfo(new VariableInfo("Property", "", typeof(ObjectData), VariableKind.In));
47    }
48
49    public override IOperation Apply(IScope scope) {
50      string serverUrl = GetVariableValue<StringData>("CedmaServerUri", scope, true).Data;
51      StringData predicate = GetVariableValue<StringData>("Predicate", scope, true);
52      ObjectData property = GetVariableValue<ObjectData>("Property", scope, true);
53
54      NetTcpBinding binding = new NetTcpBinding();
55      binding.MaxReceivedMessageSize = 10000000; // 10Mbytes
56      binding.ReaderQuotas.MaxStringContentLength = 10000000; // also 10M chars
57      binding.ReaderQuotas.MaxArrayLength = 10000000; // also 10M elements;
58      binding.Security.Mode = SecurityMode.None;
59      using(ChannelFactory<IStore> factory = new ChannelFactory<IStore>(binding)) {
60        IStore store = factory.CreateChannel(new EndpointAddress(serverUrl));
61        Statement template = new Statement(
62          new Entity(null),
63          new Entity(cedmaNamespace + predicate.Data),
64          new Literal(property.Data));
65        IList<Statement> result = store.Select(template);
66
67        foreach(Statement s in result) {
68          Scope subScope = new Scope(s.Subject.Uri.Replace(cedmaNamespace, ""));
69          subScope.AddVariable(new Variable(scope.TranslateName("Subject"), new StringData(s.Subject.Uri.Replace(cedmaNamespace,""))));
70          scope.AddSubScope(subScope);
71        }
72      }
73      return null;
74    }
75  }
76}
Note: See TracBrowser for help on using the repository browser.