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

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