X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.db.impl%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fimpl%2Fprocedure%2FCallWrappedSingleQueryProcedure4.java;fp=bundles%2Forg.simantics.db.impl%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fimpl%2Fprocedure%2FCallWrappedSingleQueryProcedure4.java;h=9de9f366b011f2949828865bdbbf34aac6875239;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/procedure/CallWrappedSingleQueryProcedure4.java b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/procedure/CallWrappedSingleQueryProcedure4.java
new file mode 100644
index 000000000..9de9f366b
--- /dev/null
+++ b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/procedure/CallWrappedSingleQueryProcedure4.java
@@ -0,0 +1,60 @@
+/*******************************************************************************
+ * 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.impl.procedure;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.common.utils.Logger;
+import org.simantics.db.impl.graph.AsyncBarrierImpl;
+import org.simantics.db.procedure.AsyncProcedure;
+
+public class CallWrappedSingleQueryProcedure4<Result> implements AsyncProcedure<Result> {
+
+	final private Object key;
+    final private AsyncProcedure<Result> procedure;
+    final private AtomicBoolean latch = new AtomicBoolean(false);
+    
+    public CallWrappedSingleQueryProcedure4(AsyncProcedure<Result> procedure, Object key) {
+        this.procedure = procedure;
+        this.key = key;
+    }
+    
+    @Override
+    public void execute(AsyncReadGraph graph, Result result) {
+    	if(latch.compareAndSet(false, true)) {
+        	try {
+        		procedure.execute(graph, result);
+        	} catch (Throwable t) {
+        		Logger.defaultLogError("AsyncProcedure.exception failed for " + procedure, t);
+        	} finally {
+        	}
+    	} else {
+    		Logger.defaultLogError("Execute or exception was called many times (this time is execute)");
+    	}
+    }
+
+    @Override
+    public void exception(AsyncReadGraph graph, Throwable t) {
+    	if(latch.compareAndSet(false, true)) {
+        	try {
+        		procedure.exception(graph, t);
+        	} catch (Throwable throwable) {
+        		Logger.defaultLogError("AsyncProcedure.exception failed for " + procedure, throwable);
+        	} finally {
+        	}
+    	} else {
+    		Logger.defaultLogError("Execute or exception was called many times (this time is exception)");
+    	}
+    }
+	
+}