bundles/org.simantics.selectionview/src/org/simantics/selectionview/SelectionViewUtils.java

   1 package org.simantics.selectionview;\r
   2 \r
   3 import java.util.List;\r
   4 \r
   5 import org.simantics.db.ReadGraph;\r
   6 import org.simantics.db.Resource;\r
   7 import org.simantics.db.exception.DatabaseException;\r
   8 import org.simantics.db.layer0.variable.Variable;\r
   9 import org.simantics.db.layer0.variable.Variables;\r
  10 import org.simantics.db.layer0.variable.Variables.Role;\r
  11 import org.simantics.scl.runtime.SCLContext;\r
  12 import org.simantics.scl.runtime.function.Function1;\r
  13 \r
  14 public class SelectionViewUtils {\r
  15 \r
  16         public static Variable getSpecialCategory(ReadGraph graph, Resource rule, Variable info) throws DatabaseException {\r
  17         \r
  18                 SelectionViewResources SEL = SelectionViewResources.getInstance(graph);\r
  19                 Resource categoryResource = info.getPossibleRepresents(graph);\r
  20                 \r
  21                 if(SEL.CategoryHidden.equals(categoryResource)) {\r
  22                         \r
  23                         Variable property = info.getParent(graph);\r
  24                         Variable parent = property.getParent(graph);\r
  25                         if(Role.PROPERTY.equals(parent.getPossibleRole(graph))) return null;\r
  26                         \r
  27                         Resource predicate = property.getPossiblePredicateResource(graph);\r
  28                         Variable ruleVariable = Variables.getVariable(graph, rule);\r
  29 \r
  30                         Function1<Object,List<?>> getSpecialCategory = ruleVariable.getPossiblePropertyValue(graph, SEL.getSpecialCategory);\r
  31                         if(getSpecialCategory == null) return null;\r
  32 \r
  33                         SCLContext sclContext = SCLContext.getCurrent();\r
  34                 Object oldGraph = sclContext.get("graph");\r
  35                         try {\r
  36                                 sclContext.put("graph", graph);\r
  37                                 Resource cat = (Resource)getSpecialCategory.apply(predicate);\r
  38                                 if(cat != null) return Variables.getVariable(graph, cat);\r
  39                         } catch (Throwable t) {\r
  40                                 throw new DatabaseException(t);\r
  41                         } finally {\r
  42                     sclContext.put("graph", oldGraph);\r
  43                         }\r
  44                 }\r
  45                 \r
  46                 return null;\r
  47 \r
  48         }\r
  49 \r
  50 }\r