Ignore NoSingleResultException in DependenciesRelation

[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / procedure / single / wrapper / SingleOrErrorProcedure.java

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/wrapper/SingleOrErrorProcedure.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/wrapper/SingleOrErrorProcedure.java
index 15dab764ab6dcd368b6622c92332b9ded4966b10..826ca5987ac8aee65627d10c426349033a60859a 100644 (file)
--- a/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/wrapper/SingleOrErrorProcedure.java
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/wrapper/SingleOrErrorProcedure.java
@@ -1,85 +1,85 @@
-/*******************************************************************************\r
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
- * in Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- *     VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-package org.simantics.db.common.procedure.single.wrapper;\r
-\r
-import java.util.concurrent.atomic.AtomicBoolean;\r
-\r
-import org.simantics.db.AsyncReadGraph;\r
-import org.simantics.db.common.procedure.adapter.AsyncMultiProcedureAdapter;\r
-import org.simantics.db.common.utils.Logger;\r
-import org.simantics.db.exception.NoSingleResultException;\r
-import org.simantics.db.procedure.AsyncProcedure;\r
-\r
-final public class SingleOrErrorProcedure<Result> extends AsyncMultiProcedureAdapter<Result> {\r
-    \r
-       private Result result = null;\r
-       final AsyncProcedure<Result> procedure;\r
-    final AtomicBoolean found = new AtomicBoolean(false);\r
-    final AtomicBoolean done = new AtomicBoolean(false);\r
-    \r
-    public SingleOrErrorProcedure(AsyncProcedure<Result> procedure) {\r
-        this.procedure = procedure;\r
-    }\r
-       \r
-    @Override\r
-    public void finished(AsyncReadGraph graph) {\r
-        \r
-       // Shall fire exactly once!\r
-       if(done.compareAndSet(false, true)) {\r
-               try {\r
-                       if(result == null) {\r
-                                       procedure.exception(graph, new NoSingleResultException("No items " + procedure));\r
-                       } else {\r
-                               procedure.execute(graph, result);\r
-                       }\r
-               } catch (Throwable t) {\r
-                       Logger.defaultLogError(t);\r
-               }\r
-       }\r
-        \r
-    }\r
-    \r
-       public void execute(AsyncReadGraph graph, Result result) {\r
-\r
-               if(found.compareAndSet(false, true)) {\r
-                       this.result = result;\r
-               } else {\r
-                       // Shall fire exactly once!\r
-                       if(done.compareAndSet(false, true)) {\r
-                               try {\r
-                                       procedure.exception(graph, new NoSingleResultException("Multiple items " + this.result + " and " + result));\r
-                               } catch (Throwable t) {\r
-                               Logger.defaultLogError(t);\r
-                               }\r
-                       }\r
-               }\r
-\r
-       }\r
-\r
-       public void exception(AsyncReadGraph graph, Throwable t) {\r
-               // Shall fire exactly once!\r
-               if(done.compareAndSet(false, true)) {\r
-                       try {\r
-                               procedure.exception(graph, t);\r
-                       } catch (Throwable t2) {\r
-                       Logger.defaultLogError(t2);\r
-                       }\r
-               }\r
-       }\r
-    \r
-    \r
-    @Override\r
-    public String toString() {\r
-        return "SingleOrErrorProcedure -> " + procedure;\r
-    }\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.common.procedure.single.wrapper;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.common.procedure.adapter.AsyncMultiProcedureAdapter;
+import org.simantics.db.common.utils.Logger;
+import org.simantics.db.exception.NoSingleResultException;
+import org.simantics.db.procedure.AsyncProcedure;
+
+final public class SingleOrErrorProcedure<Result> extends AsyncMultiProcedureAdapter<Result> {
+    
+       private Result result = null;
+       final AsyncProcedure<Result> procedure;
+    final AtomicBoolean found = new AtomicBoolean(false);
+    final AtomicBoolean done = new AtomicBoolean(false);
+    
+    public SingleOrErrorProcedure(AsyncProcedure<Result> procedure) {
+        this.procedure = procedure;
+    }
+       
+    @Override
+    public void finished(AsyncReadGraph graph) {
+        
+       // Shall fire exactly once!
+       if(done.compareAndSet(false, true)) {
+               try {
+                       if(result == null) {
+                                       procedure.exception(graph, new NoSingleResultException("No items " + procedure, 0));
+                       } else {
+                               procedure.execute(graph, result);
+                       }
+               } catch (Throwable t) {
+                       Logger.defaultLogError(t);
+               }
+       }
+        
+    }
+    
+       public void execute(AsyncReadGraph graph, Result result) {
+
+               if(found.compareAndSet(false, true)) {
+                       this.result = result;
+               } else {
+                       // Shall fire exactly once!
+                       if(done.compareAndSet(false, true)) {
+                               try {
+                                       procedure.exception(graph, new NoSingleResultException("Multiple items " + this.result + " and " + result, -1));
+                               } catch (Throwable t) {
+                               Logger.defaultLogError(t);
+                               }
+                       }
+               }
+
+       }
+
+       public void exception(AsyncReadGraph graph, Throwable t) {
+               // Shall fire exactly once!
+               if(done.compareAndSet(false, true)) {
+                       try {
+                               procedure.exception(graph, t);
+                       } catch (Throwable t2) {
+                       Logger.defaultLogError(t2);
+                       }
+               }
+       }
+    
+    
+    @Override
+    public String toString() {
+        return "SingleOrErrorProcedure -> " + procedure;
+    }
+
+}