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

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