+package org.simantics.selectionview;\r
+\r
+import java.util.List;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.db.layer0.variable.Variables;\r
+import org.simantics.db.layer0.variable.Variables.Role;\r
+import org.simantics.scl.runtime.SCLContext;\r
+import org.simantics.scl.runtime.function.Function1;\r
+\r
+public class SelectionViewUtils {\r
+\r
+ public static Variable getSpecialCategory(ReadGraph graph, Resource rule, Variable info) throws DatabaseException {\r
+ \r
+ SelectionViewResources SEL = SelectionViewResources.getInstance(graph);\r
+ Resource categoryResource = info.getPossibleRepresents(graph);\r
+ \r
+ if(SEL.CategoryHidden.equals(categoryResource)) {\r
+ \r
+ Variable property = info.getParent(graph);\r
+ Variable parent = property.getParent(graph);\r
+ if(Role.PROPERTY.equals(parent.getPossibleRole(graph))) return null;\r
+ \r
+ Resource predicate = property.getPossiblePredicateResource(graph);\r
+ Variable ruleVariable = Variables.getVariable(graph, rule);\r
+\r
+ Function1<Object,List<?>> getSpecialCategory = ruleVariable.getPossiblePropertyValue(graph, SEL.getSpecialCategory);\r
+ if(getSpecialCategory == null) return null;\r
+\r
+ SCLContext sclContext = SCLContext.getCurrent();\r
+ Object oldGraph = sclContext.get("graph");\r
+ try {\r
+ sclContext.put("graph", graph);\r
+ Resource cat = (Resource)getSpecialCategory.apply(predicate);\r
+ if(cat != null) return Variables.getVariable(graph, cat);\r
+ } catch (Throwable t) {\r
+ throw new DatabaseException(t);\r
+ } finally {\r
+ sclContext.put("graph", oldGraph);\r
+ }\r
+ }\r
+ \r
+ return null;\r
+\r
+ }\r
+\r
+}\r