1 package org.simantics.diagram.symbolcontribution;
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3 import org.simantics.db.ReadGraph;
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4 import org.simantics.db.Resource;
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5 import org.simantics.db.exception.DatabaseException;
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6 import org.simantics.db.layer0.variable.Variable;
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7 import org.simantics.db.layer0.variable.Variables;
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8 import org.simantics.diagram.stubs.DiagramResource;
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9 import org.simantics.scl.runtime.SCLContext;
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10 import org.simantics.scl.runtime.function.Function3;
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13 * @author Antti Villberg
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15 public class SCLFilter implements SymbolContributionFilter {
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19 public SCLFilter(Resource filter) {
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20 this.filter = filter;
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24 public boolean accept(ReadGraph graph, Resource contribution, Resource filter, Resource diagram) throws DatabaseException {
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26 DiagramResource DIA = DiagramResource.getInstance(graph);
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28 Variable ruleVariable = Variables.getVariable(graph, filter);
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30 Function3<Resource,Resource, Resource, Boolean> fn = ruleVariable.getPossiblePropertyValue(graph, DIA.SCLFilter_filter);
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31 if(fn == null) return true;
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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 return fn.apply(contribution, filter, diagram);
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38 } catch (Throwable t) {
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39 throw new DatabaseException(t);
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41 sclContext.put("graph", oldGraph);
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