bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/wrapper/SyncToAsyncListener.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.db.common.procedure.wrapper;
  13
  14 import org.simantics.db.AsyncReadGraph;
  15 import org.simantics.db.ReadGraph;
  16 import org.simantics.db.common.request.ReadRequest;
  17 import org.simantics.db.common.utils.Logger;
  18 import org.simantics.db.exception.DatabaseException;
  19 import org.simantics.db.procedure.AsyncListener;
  20 import org.simantics.db.procedure.Procedure;
  21 import org.simantics.db.procedure.SyncListener;
  22
  23 final public class SyncToAsyncListener<T> implements AsyncListener<T> {
  24
  25         final private SyncListener<T> procedure;
  26
  27         public SyncToAsyncListener(SyncListener<T> procedure) {
  28                 this.procedure = procedure;
  29         }
  30
  31         @Override
  32         final public void execute(AsyncReadGraph graph, final T result) {
  33 //          System.out.println("SyncToAsyncListener for " + procedure + " - execute " + result);
  34                 graph.asyncRequest(new ReadRequest() {
  35
  36                         @Override
  37                         public void run(ReadGraph graph) throws DatabaseException {
  38 //                      System.out.println("SyncToAsyncListener for " + procedure + " - execute " + result);
  39                                 procedure.execute(graph, result);
  40                         }
  41
  42                         @Override
  43                         public String toString() {
  44                             return "execute for " + SyncToAsyncListener.this.toString();
  45                         }
  46
  47                 }, new Procedure<Object>() {
  48
  49             @Override
  50             public void exception(Throwable t) {
  51                         Logger.defaultLogError(t);
  52             }
  53
  54             @Override
  55             public void execute(Object result) {
  56             }
  57
  58                 });
  59         }
  60
  61         @Override
  62         final public void exception(AsyncReadGraph graph, final Throwable t) {
  63         graph.asyncRequest(new ReadRequest() {
  64
  65             @Override
  66             public void run(ReadGraph graph) throws DatabaseException {
  67                 procedure.exception(graph, t);
  68             }
  69
  70         });
  71         }
  72
  73         @Override
  74         public boolean isDisposed() {
  75             return procedure.isDisposed();
  76         }
  77
  78     @Override
  79     public String toString() {
  80         return "SyncToAsyncListener -> " + procedure;
  81    }
  82
  83 }