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

   1 package org.simantics.db.layer0.request;\r
   2 \r
   3 import org.simantics.db.Resource;\r
   4 import org.simantics.db.VirtualGraph;\r
   5 import org.simantics.db.WriteGraph;\r
   6 import org.simantics.db.common.request.WriteResultRequest;\r
   7 import org.simantics.db.exception.DatabaseException;\r
   8 import org.simantics.db.service.VirtualGraphSupport;\r
   9 import org.simantics.operation.Layer0X;\r
  10 \r
  11 public class ActivateModel extends WriteResultRequest<Boolean> {\r
  12 \r
  13     final Resource project;\r
  14     final Resource model;\r
  15 \r
  16     public ActivateModel(Resource project, Resource model) {\r
  17         \r
  18         if(project == null) throw new IllegalArgumentException("project can not be null");\r
  19         this.project = project;\r
  20         this.model = model;\r
  21         \r
  22     }\r
  23 \r
  24     public static Boolean perform(WriteGraph graph, Resource project, Resource model) throws DatabaseException {\r
  25         Layer0X L0X = Layer0X.getInstance(graph);\r
  26         if (model != null) {\r
  27             if (!graph.hasStatement(model, L0X.IsActivatedBy, project)) {\r
  28                 graph.deny(project, L0X.Activates);\r
  29                 graph.claim(project, L0X.Activates, model);\r
  30                 return true;\r
  31             }\r
  32         } else {\r
  33             if (graph.hasStatement(project, L0X.Activates)) {\r
  34                 graph.deny(project, L0X.Activates);\r
  35                 return true;\r
  36             }\r
  37         }\r
  38         return false;\r
  39     }\r
  40 \r
  41     @Override\r
  42     public Boolean perform(WriteGraph graph) throws DatabaseException {\r
  43         VirtualGraphSupport support = graph.getService(VirtualGraphSupport.class);\r
  44         VirtualGraph activations = support.getWorkspacePersistent("activations");\r
  45         VirtualGraph vg = graph.getProvider();\r
  46         if (vg == activations) {\r
  47             return perform(graph, project, model);\r
  48         } else {\r
  49             return graph.syncRequest(new WriteResultRequest<Boolean>() {\r
  50                 @Override\r
  51                 public Boolean perform(WriteGraph graph) throws DatabaseException {\r
  52                     return ActivateModel.perform(graph, project, model);\r
  53                 }\r
  54             });\r
  55         }\r
  56     }\r
  57 \r
  58 }\r