Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.diagram / src / org / simantics / diagram / synchronization / graph / ModificationProcessRequest.java

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/ModificationProcessRequest.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/ModificationProcessRequest.java
new file mode 100644 (file)
index 0000000..63dd00a
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/ModificationProcessRequest.java
@@ -0,0 +1,84 @@
+/*******************************************************************************\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.diagram.synchronization.graph;\r
+\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.request.WriteRequest;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.request.Write;\r
+import org.simantics.diagram.internal.DebugPolicy;\r
+import org.simantics.diagram.internal.timing.GTask;\r
+import org.simantics.diagram.internal.timing.Timing;\r
+import org.simantics.diagram.synchronization.ErrorHandler;\r
+import org.simantics.diagram.synchronization.IModification;\r
+import org.simantics.utils.logging.TimeLogger;\r
+\r
+/**\r
+ * A graph database write request that composes several {@link IModification}\r
+ * instances into a single {@link Write} request.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ * \r
+ * @see IModification\r
+ */\r
+public class ModificationProcessRequest extends WriteRequest {\r
+\r
+    ErrorHandler    errorHandler;\r
+    IModification[] modifications;\r
+\r
+    public ModificationProcessRequest(ErrorHandler errorHandler, IModification[] modifications) {\r
+        this.errorHandler = errorHandler;\r
+        this.modifications = modifications;\r
+    }\r
+\r
+    @Override\r
+    public void perform(final WriteGraph g) throws DatabaseException {\r
+        g.markUndoPoint();\r
+        if (DebugPolicy.DEBUG_GRAPH_WRITEBACK)\r
+            System.out.println(Thread.currentThread() + " Performing " + modifications.length + " modifications");\r
+        Timing.timed("" + modifications.length + " MODIFICATIONS", new GTask() {\r
+            @Override\r
+            public void run() throws DatabaseException {\r
+                for (IModification m : modifications) {\r
+                    if (m != null) {\r
+                        modification(g, m);\r
+                    }\r
+                }\r
+            }\r
+        });\r
+    }\r
+\r
+    public void modification(final WriteGraph g, final IModification m) throws DatabaseException {\r
+        Timing.timed(m.toString(), new GTask() {\r
+            @Override\r
+            public void run() throws DatabaseException {\r
+                synchronized (m) {\r
+                    try {\r
+                        if (DebugPolicy.DEBUG_GRAPH_WRITEBACK_MODIFICATION)\r
+                            System.out.println(Thread.currentThread() + "  Performing modification: " + m);\r
+                        m.perform(g);\r
+                    } catch (Exception e) {\r
+                        m.setException(e);\r
+                        errorHandler.error(e.getMessage(), e);\r
+                    } catch (Error e) {\r
+                        m.setException(e);\r
+                        errorHandler.error(e.getMessage(), e);\r
+                    } finally {\r
+                        m.markComplete();\r
+                        m.notifyAll();\r
+                    }\r
+                }\r
+            }\r
+        });\r
+    }\r
+\r
+}
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