bundles/org.simantics.document.server/src/org/simantics/document/server/request/NodesRequest.java

   1 package org.simantics.document.server.request;\r
   2 \r
   3 import gnu.trove.set.hash.THashSet;\r
   4 \r
   5 import java.util.Collection;\r
   6 import java.util.Collections;\r
   7 import java.util.Set;\r
   8 \r
   9 import org.simantics.db.ReadGraph;\r
  10 import org.simantics.db.exception.DatabaseException;\r
  11 import org.simantics.db.layer0.request.VariableChildren;\r
  12 import org.simantics.db.layer0.request.VariableRead;\r
  13 import org.simantics.db.layer0.variable.Variable;\r
  14 import org.simantics.structural.stubs.StructuralResource2;\r
  15 \r
  16 public class NodesRequest extends VariableRead<Set<Variable>> {\r
  17 \r
  18     public NodesRequest(Variable var) {\r
  19         super(var);\r
  20         }\r
  21 \r
  22         @Override\r
  23         public Set<Variable> perform(ReadGraph graph) throws DatabaseException {\r
  24             \r
  25                 long s = System.nanoTime();\r
  26                 \r
  27                 StructuralResource2.getInstance(graph);\r
  28                 if(variable == null)\r
  29                         return Collections.emptySet();\r
  30 \r
  31                 Set<Variable> nodes = new THashSet<Variable>();\r
  32                 Collection<Variable> children = graph.syncRequest(new VariableChildren(variable));\r
  33                 for(Variable child : children) {\r
  34                         Set<Variable> childNodes = graph.syncRequest(new NodesRequest2(child));\r
  35                         nodes.addAll(childNodes);\r
  36                 }\r
  37                 \r
  38         if(DocumentRequest.PROFILE) {\r
  39                 long dura = System.nanoTime()-s;\r
  40                 System.err.println("NodesRequest " + System.identityHashCode(this) + " " + variable.getURI(graph) + " in " + 1e-6*dura + "ms.");\r
  41         }\r
  42                 \r
  43                 return nodes;\r
  44 \r
  45         }\r
  46 \r
  47 }