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