bundles/org.simantics.document.server/src/org/simantics/document/server/request/NodesRequest2.java

   1 package org.simantics.document.server.request;
   2
   3 import gnu.trove.set.hash.THashSet;
   4
   5 import java.util.Collections;
   6 import java.util.Set;
   7
   8 import org.simantics.databoard.Bindings;
   9 import org.simantics.db.ReadGraph;
  10 import org.simantics.db.Resource;
  11 import org.simantics.db.exception.DatabaseException;
  12 import org.simantics.db.layer0.request.VariableRead;
  13 import org.simantics.db.layer0.variable.Variable;
  14 import org.simantics.document.base.ontology.DocumentationResource;
  15
  16 public class NodesRequest2 extends VariableRead<Set<Variable>> {
  17
  18     public NodesRequest2(Variable var) {
  19         super(var);
  20         }
  21
  22         @Override
  23         public Set<Variable> perform(ReadGraph graph) throws DatabaseException {
  24
  25                 DocumentationResource DOC = DocumentationResource.getInstance(graph);
  26
  27                 Resource type = variable.getPossibleType(graph);
  28                 if(type == null) return Collections.emptySet();
  29
  30                 if(!graph.isInheritedFrom(type, DOC.Components_Component)) return Collections.emptySet();
  31
  32                 Boolean pathExists = variable.getPossiblePropertyValue(graph, DOC.Properties_pathExists, Bindings.BOOLEAN);
  33                 if(pathExists != null && !pathExists) return Collections.emptySet();
  34
  35                 if(graph.isInheritedFrom(type, DOC.Components_PrimitiveComponent)) {
  36                         return Collections.singleton(variable);
  37                 } else {
  38                         Set<Variable> result = new THashSet<Variable>();
  39                         for(Variable child : variable.getChildren(graph)) {
  40                                 Set<Variable> nodes = graph.syncRequest(new NodesRequest2(child));
  41                                 result.addAll(nodes);
  42                         }
  43
  44                         return result;
  45                 }
  46
  47         }
  48
  49 }