1 package org.simantics.selectionview;
5 import org.simantics.db.ReadGraph;
6 import org.simantics.db.Resource;
7 import org.simantics.db.exception.DatabaseException;
8 import org.simantics.db.layer0.variable.Variable;
9 import org.simantics.db.layer0.variable.Variables;
10 import org.simantics.db.layer0.variable.Variables.Role;
11 import org.simantics.scl.runtime.SCLContext;
12 import org.simantics.scl.runtime.function.Function1;
14 public class SelectionViewUtils {
16 public static Variable getSpecialCategory(ReadGraph graph, Resource rule, Variable info) throws DatabaseException {
18 SelectionViewResources SEL = SelectionViewResources.getInstance(graph);
19 Resource categoryResource = info.getPossibleRepresents(graph);
21 if(SEL.CategoryHidden.equals(categoryResource)) {
23 Variable property = info.getParent(graph);
24 Variable parent = property.getParent(graph);
25 if(Role.PROPERTY.equals(parent.getPossibleRole(graph))) return null;
27 Resource predicate = property.getPossiblePredicateResource(graph);
28 Variable ruleVariable = Variables.getVariable(graph, rule);
30 Function1<Object,List<?>> getSpecialCategory = ruleVariable.getPossiblePropertyValue(graph, SEL.getSpecialCategory);
31 if(getSpecialCategory == null) return null;
33 SCLContext sclContext = SCLContext.getCurrent();
34 Object oldGraph = sclContext.get("graph");
36 sclContext.put("graph", graph);
37 Resource cat = (Resource)getSpecialCategory.apply(predicate);
38 if(cat != null) return Variables.getVariable(graph, cat);
39 } catch (Throwable t) {
40 throw new DatabaseException(t);
42 sclContext.put("graph", oldGraph);