bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/PossibleExperimentVariable.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.db.layer0.request;\r
  13 \r
  14 import org.simantics.db.ReadGraph;\r
  15 import org.simantics.db.Resource;\r
  16 import org.simantics.db.common.ResourceArray;\r
  17 import org.simantics.db.common.exception.DebugException;\r
  18 import org.simantics.db.common.request.BinaryRead;\r
  19 import org.simantics.db.exception.AdaptionException;\r
  20 import org.simantics.db.exception.DatabaseException;\r
  21 import org.simantics.db.exception.ResourceNotFoundException;\r
  22 import org.simantics.db.layer0.exception.MissingVariableException;\r
  23 import org.simantics.db.layer0.variable.Variable;\r
  24 import org.simantics.db.layer0.variable.VariableInterface;\r
  25 \r
  26 public class PossibleExperimentVariable extends BinaryRead<String, ResourceArray, Variable> {\r
  27 \r
  28     public PossibleExperimentVariable(String experiment, ResourceArray resource) {\r
  29         super(experiment, resource);\r
  30     }\r
  31 \r
  32     @Override\r
  33     public Variable perform(ReadGraph graph) throws DatabaseException {\r
  34 \r
  35         try {\r
  36                 \r
  37                 Resource tail = parameter2.tail();\r
  38                 Resource head = parameter2.head();\r
  39 \r
  40                 if(!graph.hasStatement(tail)) return null;\r
  41                 \r
  42                 String valuationName = parameter;\r
  43             \r
  44             Resource model = graph.syncRequest(new PossibleModel(head));\r
  45             if (model == null) return null;\r
  46 \r
  47             VariableInterface variableInterface = graph.adapt(model, VariableInterface.class);\r
  48             Variable modelVariable = graph.adapt(model, Variable.class);\r
  49             Variable experimentVariable = modelVariable.browse(graph, valuationName);\r
  50             return variableInterface.getVariable(graph, experimentVariable, parameter2);\r
  51             \r
  52         } catch (MissingVariableException e) {\r
  53             if (DebugException.DEBUG)\r
  54                 e.printStackTrace();\r
  55             return null;\r
  56         } catch (ResourceNotFoundException e) {\r
  57             if (DebugException.DEBUG)\r
  58                 e.printStackTrace();\r
  59             return null;\r
  60         } catch (AdaptionException e) {\r
  61             if (DebugException.DEBUG)\r
  62                 e.printStackTrace();\r
  63             return null;\r
  64         } catch (Throwable e) {\r
  65             if (DebugException.DEBUG)\r
  66                 e.printStackTrace();\r
  67             return null;\r
  68         }\r
  69 \r
  70     }\r
  71 \r
  72 }\r