bundles/org.simantics.diagram/src/org/simantics/diagram/synchronization/graph/ModificationProcessRequest.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.diagram.synchronization.graph;\r
  13 \r
  14 import org.simantics.db.WriteGraph;\r
  15 import org.simantics.db.common.request.WriteRequest;\r
  16 import org.simantics.db.exception.DatabaseException;\r
  17 import org.simantics.db.request.Write;\r
  18 import org.simantics.diagram.internal.DebugPolicy;\r
  19 import org.simantics.diagram.internal.timing.GTask;\r
  20 import org.simantics.diagram.internal.timing.Timing;\r
  21 import org.simantics.diagram.synchronization.ErrorHandler;\r
  22 import org.simantics.diagram.synchronization.IModification;\r
  23 import org.simantics.utils.logging.TimeLogger;\r
  24 \r
  25 /**\r
  26  * A graph database write request that composes several {@link IModification}\r
  27  * instances into a single {@link Write} request.\r
  28  * \r
  29  * @author Tuukka Lehtonen\r
  30  * \r
  31  * @see IModification\r
  32  */\r
  33 public class ModificationProcessRequest extends WriteRequest {\r
  34 \r
  35     ErrorHandler    errorHandler;\r
  36     IModification[] modifications;\r
  37 \r
  38     public ModificationProcessRequest(ErrorHandler errorHandler, IModification[] modifications) {\r
  39         this.errorHandler = errorHandler;\r
  40         this.modifications = modifications;\r
  41     }\r
  42 \r
  43     @Override\r
  44     public void perform(final WriteGraph g) throws DatabaseException {\r
  45         g.markUndoPoint();\r
  46         if (DebugPolicy.DEBUG_GRAPH_WRITEBACK)\r
  47             System.out.println(Thread.currentThread() + " Performing " + modifications.length + " modifications");\r
  48         Timing.timed("" + modifications.length + " MODIFICATIONS", new GTask() {\r
  49             @Override\r
  50             public void run() throws DatabaseException {\r
  51                 for (IModification m : modifications) {\r
  52                     if (m != null) {\r
  53                         modification(g, m);\r
  54                     }\r
  55                 }\r
  56             }\r
  57         });\r
  58     }\r
  59 \r
  60     public void modification(final WriteGraph g, final IModification m) throws DatabaseException {\r
  61         Timing.timed(m.toString(), new GTask() {\r
  62             @Override\r
  63             public void run() throws DatabaseException {\r
  64                 synchronized (m) {\r
  65                     try {\r
  66                         if (DebugPolicy.DEBUG_GRAPH_WRITEBACK_MODIFICATION)\r
  67                             System.out.println(Thread.currentThread() + "  Performing modification: " + m);\r
  68                         m.perform(g);\r
  69                     } catch (Exception e) {\r
  70                         m.setException(e);\r
  71                         errorHandler.error(e.getMessage(), e);\r
  72                     } catch (Error e) {\r
  73                         m.setException(e);\r
  74                         errorHandler.error(e.getMessage(), e);\r
  75                     } finally {\r
  76                         m.markComplete();\r
  77                         m.notifyAll();\r
  78                     }\r
  79                 }\r
  80             }\r
  81         });\r
  82     }\r
  83 \r
  84 }