1 package org.simantics.document.server.request;
3 import java.util.Collection;
4 import java.util.Collections;
5 import java.util.HashSet;
8 import org.simantics.db.ReadGraph;
9 import org.simantics.db.common.request.UnaryRead;
10 import org.simantics.db.exception.DatabaseException;
11 import org.simantics.db.layer0.request.VariableChildren;
12 import org.simantics.db.layer0.request.VariableRead;
13 import org.simantics.db.layer0.variable.Variable;
14 import org.simantics.structural.stubs.StructuralResource2;
16 public class NodesRequest extends VariableRead<Set<Variable>> {
18 public NodesRequest(Variable var) {
22 static class CollectNodesRequest2 extends UnaryRead<Collection<Variable>, Set<Variable>> {
24 public CollectNodesRequest2(Collection<Variable> nodes) {
29 public Set<Variable> perform(ReadGraph graph) throws DatabaseException {
30 HashSet<Variable> rs = new HashSet<>(); // result
31 for(Variable child : parameter) {
32 Set<Variable> childNodes = graph.syncRequest(new NodesRequest2(child));
33 rs.addAll(childNodes);
41 public Set<Variable> perform(ReadGraph graph) throws DatabaseException {
43 long s = System.nanoTime();
45 StructuralResource2.getInstance(graph);
47 return Collections.emptySet();
49 Collection<Variable> children = graph.syncRequest(new VariableChildren(variable));
51 Set<Variable> nodes = graph.syncRequest(new CollectNodesRequest2(children));
53 if(DocumentRequest.PROFILE) {
54 long dura = System.nanoTime()-s;
55 System.err.println("NodesRequest " + System.identityHashCode(this) + " in " + 1e-6*dura + "ms. " + variable.getURI(graph));