bundles/org.simantics.structural2/src/org/simantics/structural2/queries/PossibleConnectionPointInfo.java

   1 package org.simantics.structural2.queries;\r
   2 \r
   3 import org.simantics.db.ReadGraph;\r
   4 import org.simantics.db.Resource;\r
   5 import org.simantics.db.common.primitiverequest.IsSubrelationOf;\r
   6 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;\r
   7 import org.simantics.db.common.request.ResourceRead;\r
   8 import org.simantics.db.exception.DatabaseException;\r
   9 import org.simantics.db.layer0.request.PropertyInfo;\r
  10 import org.simantics.db.layer0.request.PropertyInfoRequest;\r
  11 import org.simantics.structural.stubs.StructuralResource2;\r
  12 \r
  13 public class PossibleConnectionPointInfo extends ResourceRead<PropertyInfo> {\r
  14 \r
  15         public PossibleConnectionPointInfo(Resource resource) {\r
  16                 super(resource);\r
  17         }\r
  18 \r
  19         @Override\r
  20         public PropertyInfo perform(ReadGraph graph) throws DatabaseException {\r
  21 \r
  22                 PropertyInfo info = graph.syncRequest(new PropertyInfoRequest(resource), TransientCacheAsyncListener.<PropertyInfo>instance());\r
  23                 if(info != null && !info.isHasProperty) {\r
  24                         StructuralResource2 STR = StructuralResource2.getInstance(graph);\r
  25                         if(graph.syncRequest(new IsSubrelationOf(resource, STR.IsConnectedTo), TransientCacheAsyncListener.<Boolean>instance())) {\r
  26                                 if (info.name != null) return info;\r
  27                         }\r
  28                 }\r
  29                 return null;\r
  30                 \r
  31         }\r
  32 \r
  33 }\r