X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Fprocedure%2Fsingle%2Fwrapper%2FDeepSingleOrNullProcedure.java;fp=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Fprocedure%2Fsingle%2Fwrapper%2FDeepSingleOrNullProcedure.java;h=32f2eda6ac0e9d9e99ed37bcda18f00635b70f0a;hb=0ae2b770234dfc3cbb18bd38f324125cf0faca07;hp=54b88cb40d6f2be76904b928dbb78652efaf2b1e;hpb=24e2b34260f219f0d1644ca7a138894980e25b14;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/wrapper/DeepSingleOrNullProcedure.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/wrapper/DeepSingleOrNullProcedure.java
index 54b88cb40..32f2eda6a 100644
--- a/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/wrapper/DeepSingleOrNullProcedure.java
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/wrapper/DeepSingleOrNullProcedure.java
@@ -1,91 +1,91 @@
-/*******************************************************************************
- * 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 java.util.concurrent.atomic.AtomicInteger;
-
-import org.simantics.db.AsyncReadGraph;
-import org.simantics.db.common.utils.Logger;
-import org.simantics.db.procedure.AsyncProcedure;
-
-final public class DeepSingleOrNullProcedure<Result> {
-    
-	private Result result = null;
-	final AsyncProcedure<Result> procedure;
-    final AtomicBoolean done = new AtomicBoolean(false);
-    final AtomicBoolean found = new AtomicBoolean(false);
-    final AtomicInteger ready = new AtomicInteger(1);
-    
-    public DeepSingleOrNullProcedure(AsyncProcedure<Result> procedure) {
-        
-        this.procedure = procedure;
-        
-    }
-    
-    public void inc() {
-        
-        ready.incrementAndGet();
-        
-    }
-    
-    public void dec(AsyncReadGraph graph) {
-
-        if(ready.decrementAndGet() == 0) {
-			// Shall fire exactly once!
-            if(done.compareAndSet(false, true)) {
-            	try {
-            		if(found.compareAndSet(false, true)) {
-    					procedure.execute(graph, null);
-            		} else {
-    					procedure.execute(graph, result);
-            		}
-            	} catch (Throwable t) {
-            		Logger.defaultLogError(t);
-					procedure.execute(graph, null);
-            	}
-            }
-        }
-        
-    }
-
-    public void offer(AsyncReadGraph graph, Result result) {
-        
-		if(found.compareAndSet(false, true)) {
-			this.result = result;
-		} else {
-			// Shall fire exactly once!
-			if(done.compareAndSet(false, true)) {
-				try {
-					procedure.execute(graph, null);
-				} catch (Throwable t) {
-		    		Logger.defaultLogError(t);
-					procedure.execute(graph, null);
-				}
-			}
-		}
-        
-    }
-    
-    public void exception(AsyncReadGraph graph, Throwable t) {
-		// Shall fire exactly once!
-		if(done.compareAndSet(false, true)) {
-			try {
-				procedure.execute(graph, null);
-			} catch (Throwable t2) {
-	    		Logger.defaultLogError(t);
-				procedure.execute(graph, null);
-			}
-		}
-    }
-	
-}
+/*******************************************************************************
+ * 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 java.util.concurrent.atomic.AtomicInteger;
+
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.common.utils.Logger;
+import org.simantics.db.procedure.AsyncProcedure;
+
+final public class DeepSingleOrNullProcedure<Result> {
+    
+	private Result result = null;
+	final AsyncProcedure<Result> procedure;
+    final AtomicBoolean done = new AtomicBoolean(false);
+    final AtomicBoolean found = new AtomicBoolean(false);
+    final AtomicInteger ready = new AtomicInteger(1);
+    
+    public DeepSingleOrNullProcedure(AsyncProcedure<Result> procedure) {
+        
+        this.procedure = procedure;
+        
+    }
+    
+    public void inc() {
+        
+        ready.incrementAndGet();
+        
+    }
+    
+    public void dec(AsyncReadGraph graph) {
+
+        if(ready.decrementAndGet() == 0) {
+			// Shall fire exactly once!
+            if(done.compareAndSet(false, true)) {
+            	try {
+            		if(found.compareAndSet(false, true)) {
+    					procedure.execute(graph, null);
+            		} else {
+    					procedure.execute(graph, result);
+            		}
+            	} catch (Throwable t) {
+            		Logger.defaultLogError(t);
+					procedure.execute(graph, null);
+            	}
+            }
+        }
+        
+    }
+
+    public void offer(AsyncReadGraph graph, Result result) {
+        
+		if(found.compareAndSet(false, true)) {
+			this.result = result;
+		} else {
+			// Shall fire exactly once!
+			if(done.compareAndSet(false, true)) {
+				try {
+					procedure.execute(graph, null);
+				} catch (Throwable t) {
+		    		Logger.defaultLogError(t);
+					procedure.execute(graph, null);
+				}
+			}
+		}
+        
+    }
+    
+    public void exception(AsyncReadGraph graph, Throwable t) {
+		// Shall fire exactly once!
+		if(done.compareAndSet(false, true)) {
+			try {
+				procedure.execute(graph, null);
+			} catch (Throwable t2) {
+	    		Logger.defaultLogError(t);
+				procedure.execute(graph, null);
+			}
+		}
+    }
+	
+}