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