Changeset 557 for trunk

Timestamp:

09/12/08 17:36:43 (16 years ago)

Author:

gkronber

Message:

added very coarse grained locking in the Store as a quick fix to support distributed execution model generating engines

File:

• trunk/sources/HeuristicLab.CEDMA.DB/Store.cs (modified) (2 diffs)

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

@@ -41 +41 @@
     private string connectionString;
     private SemWeb.Store store;
+    private object bigLock = new object();
     public Store(string connectionString) {
-      this.connectionString = connectionString;
-      store = SemWeb.Store.Create(connectionString);
+      lock(bigLock) {
+        this.connectionString = connectionString;
+        store = SemWeb.Store.Create(connectionString);
+      }
     }
 
     public void Add(Statement statement) {
-      store.Add(Translate(statement));
+      lock(bigLock) {
+        store.Add(Translate(statement));
+      }
     }
 
     public IList<Statement> Select(Statement template) {
-      SemWeb.SelectResult result = store.Select(Translate(template));
+      SemWeb.SelectResult result;
+      lock(bigLock) {
+        result = store.Select(Translate(template));
+      }
       List<Statement> r = new List<Statement>();
       foreach(SemWeb.Statement resultStatement in result) {
@@ -60 +68 @@
 
     public IList<Statement> Select(SelectFilter filter) {
-      SemWeb.SelectResult result = store.Select(Translate(filter));
+      SemWeb.SelectResult result;
+      lock(bigLock) {
+        result = store.Select(Translate(filter));
+      }
       List<Statement> r = new List<Statement>();
       foreach(SemWeb.Statement resultStatement in result) {