Changeset 1116 for branches/CEDMA-Refactoring-Ticket419/HeuristicLab.CEDMA.Core/DataSet.cs

Timestamp:

01/13/09 15:07:31 (15 years ago)

Author:

gkronber

Message:

worked on CEDMA DB-backend. Select() interface to RDF_Store is not powerful enough => need Query() interface. #419
(work in progress - doesn't build!)

File:

• branches/CEDMA-Refactoring-Ticket419/HeuristicLab.CEDMA.Core/DataSet.cs (modified) (2 diffs)

branches/CEDMA-Refactoring-Ticket419/HeuristicLab.CEDMA.Core/DataSet.cs

@@ -48 +48 @@
         // lazy loading of problem from DB
         if (problem == null) {
-          IList<Statement> persistedData = Store.Select(new Statement(new Entity(Ontology.CedmaNameSpace + Guid), Ontology.PredicateSerializedData, Ontology.AnyEntity));
-          if (persistedData.Count == 1) {
-            Literal persistedLiteral = (Literal)persistedData[0].Property;
+          var persistedData = Store.Select(new Statement(new Entity(Ontology.CedmaNameSpace + Guid), Ontology.PredicateSerializedData, Ontology.AnyEntity));
+          if (persistedData.Count() == 1) {
+            Literal persistedLiteral = (Literal)persistedData.First().Property;
             this.problem = (Problem)PersistenceManager.RestoreFromGZip(Convert.FromBase64String((string)persistedLiteral.Value));
           } else
             this.problem = new Problem(); // no entry in the DB => create a new problem
         }
-        return problem; 
+        return problem;
       }
     }
@@ -69 +69 @@
       Store = store;
       guid = new Guid(dataSetEntity.Uri.Remove(0, Ontology.CedmaNameSpace.Length));
-      IList<Statement> names = store.Select(new Statement(dataSetEntity, Ontology.PredicateName, Ontology.AnyEntity));
-      if (names.Count > 0) name = (string)((Literal)names[0].Property).Value;
+      var names = store.Select(new Statement(dataSetEntity, Ontology.PredicateName, Ontology.AnyEntity));
+      if (names.Count() > 0) name = (string)((Literal)names.First().Property).Value;
       else name = guid.ToString();
     }