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.exception.DatabaseException;
  18 import org.simantics.db.procedure.AsyncListener;
  19 import org.simantics.db.procedure.Procedure;
  20 import org.simantics.db.procedure.SyncListener;
  21 import org.slf4j.LoggerFactory;
  22
  23 final public class SyncToAsyncListener<T> implements AsyncListener<T> {
  24
  25     private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(SyncToAsyncListener.class);
  26
  27         final private SyncListener<T> procedure;
  28
  29         public SyncToAsyncListener(SyncListener<T> procedure) {
  30                 this.procedure = procedure;
  31         }
  32
  33         @Override
  34         final public void execute(AsyncReadGraph graph, final T result) {
  35 //          System.out.println("SyncToAsyncListener for " + procedure + " - execute " + result);
  36                 graph.asyncRequest(new ReadRequest() {
  37
  38                         @Override
  39                         public void run(ReadGraph graph) throws DatabaseException {
  40 //                      System.out.println("SyncToAsyncListener for " + procedure + " - execute " + result);
  41                                 procedure.execute(graph, result);
  42                         }
  43
  44                         @Override
  45                         public String toString() {
  46                             return "execute for " + SyncToAsyncListener.this.toString();
  47                         }
  48
  49                 }, new Procedure<Object>() {
  50
  51             @Override
  52             public void exception(Throwable t) {
  53                 LOGGER.error("{} failed", SyncToAsyncListener.this.toString(), t);
  54             }
  55
  56             @Override
  57             public void execute(Object result) {
  58             }
  59
  60                 });
  61         }
  62
  63         @Override
  64         final public void exception(AsyncReadGraph graph, final Throwable t) {
  65         graph.asyncRequest(new ReadRequest() {
  66
  67             @Override
  68             public void run(ReadGraph graph) throws DatabaseException {
  69                 procedure.exception(graph, t);
  70             }
  71
  72         });
  73         }
  74
  75         @Override
  76         public boolean isDisposed() {
  77             return procedure.isDisposed();
  78         }
  79
  80     @Override
  81     public String toString() {
  82         return "SyncToAsyncListener -> " + procedure;
  83    }
  84
  85 }