Changeset 2137 for trunk/sources/HeuristicLab.CEDMA.DB/3.3/Store.cs

Timestamp:

07/06/09 19:52:06 (15 years ago)

Author:

gkronber

Message:

Improved loading speed of CEDMA results by:

• Limit number of models to the best 10% for each target variable
• Cache sqlite rdf store to memory on first query

#286 (Variable-usage diagrams for the CEDMA frontend)

File:

• trunk/sources/HeuristicLab.CEDMA.DB/3.3/Store.cs (modified) (1 diff)

trunk/sources/HeuristicLab.CEDMA.DB/3.3/Store.cs

@@ -75 +75 @@
         SemWeb.N3Reader n3Reader = new SemWeb.N3Reader(new StringReader(query));
         SemWeb.Query.GraphMatch matcher = new SemWeb.Query.GraphMatch(n3Reader);
-        matcher.Run(store, resultSink);
+        if (memStore == null) {
+          CacheStore();
+        }
+        matcher.Run(memStore, resultSink);
         return resultSink.Bindings.Skip(page * pageSize).Take(pageSize).ToList();
       }
     }
 
+    SemWeb.Store memStore;
+    private void CacheStore() {
+      memStore = new SemWeb.MemoryStore();
+      memStore.Import(store);
+    }
+
     public ICollection<VariableBindings> Query(ICollection<Statement> query, int page, int pageSize) {
       lock (bigLock) {
         MyQueryResultSink resultSink = new MyQueryResultSink();
-        Translate(query).Run(store, resultSink);
+        if (memStore == null) {
+          CacheStore();
+        }
+        Translate(query).Run(memStore, resultSink);
         return resultSink.Bindings.Skip(page * pageSize).Take(pageSize).ToList();
       }