bundles/org.simantics.layer0.utils/src/org/simantics/layer0/utils/direct/ExceptionUtils.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.layer0.utils.direct;
  13
  14 import java.util.ArrayList;
  15 import java.util.Collection;
  16
  17 import org.simantics.db.AsyncReadGraph;
  18 import org.simantics.db.ReadGraph;
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.common.utils.NameUtils;
  21 import org.simantics.db.exception.DatabaseException;
  22 import org.simantics.db.procedure.AsyncProcedure;
  23 import org.simantics.db.request.Read;
  24
  25 public class ExceptionUtils {
  26
  27     public static <T> void decipher(AsyncReadGraph graph, Throwable throwable, final AsyncProcedure<T> procedure) {
  28
  29         if(throwable instanceof DatabaseException) {
  30
  31             System.out.println("decipher " + throwable);
  32
  33             final DatabaseException e = (DatabaseException)throwable;
  34
  35             Collection<Resource> resources = e.getResources();
  36             if(resources != null) {
  37
  38                 graph.asyncRequest(new Read<ArrayList<String>>() {
  39
  40                     @Override
  41                     public ArrayList<String> perform(ReadGraph graph) throws DatabaseException {
  42
  43                         Collection<Resource> resources = e.getResources();
  44                         ArrayList<String> names = new ArrayList<String>();
  45
  46                         for(Resource r : resources) {
  47                             names.add(NameUtils.getSafeName(graph, r));
  48                         }
  49
  50                         return names;
  51
  52                     }
  53
  54                 }, new AsyncProcedure<ArrayList<String>>() {
  55
  56                     @Override
  57                     public void exception(AsyncReadGraph graph, Throwable throwable) {
  58                         procedure.exception(graph, throwable);
  59                     }
  60
  61                     @Override
  62                     public void execute(AsyncReadGraph graph, ArrayList<String> names) {
  63                         e.setNames(names);
  64                         procedure.exception(graph, e);
  65                     }
  66
  67                 });
  68
  69             } else {
  70
  71                 procedure.exception(graph, throwable);
  72
  73             }
  74
  75         } else {
  76
  77             procedure.exception(graph, throwable);
  78
  79         }
  80
  81     }
  82
  83 }