bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/ActiveModels.java

   1 package org.simantics.db.layer0.request;\r
   2 \r
   3 import java.util.ArrayList;\r
   4 import java.util.Collection;\r
   5 \r
   6 import org.simantics.db.ReadGraph;\r
   7 import org.simantics.db.Resource;\r
   8 import org.simantics.db.common.request.ObjectsWithType;\r
   9 import org.simantics.db.common.request.ResourceRead;\r
  10 import org.simantics.db.exception.DatabaseException;\r
  11 import org.simantics.layer0.Layer0;\r
  12 import org.simantics.operation.Layer0X;\r
  13 import org.simantics.simulation.ontology.SimulationResource;\r
  14 \r
  15 /**\r
  16  * Returns a set of active models.\r
  17  * \r
  18  * @author Tuukka Lehtonen\r
  19  */\r
  20 public class ActiveModels extends ResourceRead<Collection<Resource>> {\r
  21 \r
  22     public ActiveModels(Resource project) {\r
  23         super(project);\r
  24     }\r
  25 \r
  26     @Override\r
  27     public Collection<Resource> perform(ReadGraph graph) throws DatabaseException {\r
  28         Layer0 L0 = Layer0.getInstance(graph);\r
  29         Layer0X L0X = Layer0X.getInstance(graph);\r
  30         SimulationResource SIMU = SimulationResource.getInstance(graph);\r
  31         ArrayList<Resource> result = new ArrayList<Resource>();\r
  32         for (Resource model : graph.syncRequest(new ObjectsWithType(resource, L0.ConsistsOf, SIMU.Model))) {\r
  33             if (graph.hasStatement(model, L0X.IsActivatedBy))\r
  34                 result.add(model);\r
  35         }\r
  36         return result;\r
  37     }\r
  38     \r
  39     public static Resource getPossibleActiveModel(ReadGraph graph, Resource project) throws DatabaseException {\r
  40         Collection<Resource> models = graph.syncRequest(new ActiveModels(project));\r
  41         if(models.isEmpty())\r
  42             return null;\r
  43         else\r
  44             return models.iterator().next();\r
  45     }\r
  46 \r
  47 }\r