bundles/org.simantics.modeling/src/org/simantics/modeling/ImmutableComponentVariableBuilder.java

   1 package org.simantics.modeling;
   2
   3 import org.simantics.db.ReadGraph;
   4 import org.simantics.db.Resource;
   5 import org.simantics.db.common.procedure.adapter.TransientCacheListener;
   6 import org.simantics.db.common.utils.NameUtils;
   7 import org.simantics.db.exception.DatabaseException;
   8 import org.simantics.db.layer0.variable.StandardGraphChildVariable;
   9 import org.simantics.db.layer0.variable.StandardGraphPropertyVariable;
  10 import org.simantics.db.layer0.variable.Variable;
  11 import org.simantics.db.layer0.variable.VariableBuilder;
  12 import org.simantics.db.layer0.variable.VariableNode;
  13
  14 public class ImmutableComponentVariableBuilder<Node> implements VariableBuilder<Node> {
  15
  16         @Override
  17         public Variable buildChild(ReadGraph graph, Variable parent, VariableNode<Node> node, Resource child) throws DatabaseException {
  18                 if(graph.isImmutable(child)) {
  19                         ImmutableComponentVariableContent content = graph.syncRequest(new ImmutableComponentVariableContentRequest(child), TransientCacheListener.instance());
  20                         return new ImmutableComponentVariable(parent, content);
  21                 } else {
  22                         return new StandardGraphChildVariable(parent, node, child);
  23                 }
  24         }
  25
  26         @Override
  27         public Variable buildProperty(ReadGraph graph, Variable parent, VariableNode<Node> node, Resource subject, Resource predicate) throws DatabaseException {
  28                 return new StandardGraphPropertyVariable(graph, parent, node, subject, predicate);
  29         }
  30
  31 }