1 package org.simantics.document.server.request;
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3 import gnu.trove.set.hash.THashSet;
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5 import java.util.Collection;
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6 import java.util.Collections;
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7 import java.util.Set;
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9 import org.simantics.db.ReadGraph;
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10 import org.simantics.db.exception.DatabaseException;
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11 import org.simantics.db.layer0.request.VariableChildren;
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12 import org.simantics.db.layer0.request.VariableRead;
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13 import org.simantics.db.layer0.variable.Variable;
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14 import org.simantics.structural.stubs.StructuralResource2;
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16 public class NodesRequest extends VariableRead<Set<Variable>> {
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18 public NodesRequest(Variable var) {
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23 public Set<Variable> perform(ReadGraph graph) throws DatabaseException {
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25 long s = System.nanoTime();
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27 StructuralResource2.getInstance(graph);
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28 if(variable == null)
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29 return Collections.emptySet();
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31 Set<Variable> nodes = new THashSet<Variable>();
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32 Collection<Variable> children = graph.syncRequest(new VariableChildren(variable));
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33 for(Variable child : children) {
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34 Set<Variable> childNodes = graph.syncRequest(new NodesRequest2(child));
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35 nodes.addAll(childNodes);
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38 if(DocumentRequest.PROFILE) {
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39 long dura = System.nanoTime()-s;
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40 System.err.println("NodesRequest " + System.identityHashCode(this) + " " + variable.getURI(graph) + " in " + 1e-6*dura + "ms.");
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