How to use

forceDecorrelate

method

in

org.apache.calcite.config.CalciteConnectionConfig

 public RelNode run(RelOptPlanner planner, RelNode rel,
           RelTraitSet requiredOutputTraits,
           List<RelOptMaterialization> materializations,
           List<RelOptLattice> lattices) {
  final CalciteConnectionConfig config =
    planner.getContext().unwrap(CalciteConnectionConfig.class);
  if (config != null && config.forceDecorrelate()) {
   return RelDecorrelator.decorrelateQuery(rel);
  }
  return rel;
 }
}

 public RelNode run(RelOptPlanner planner, RelNode rel,
   RelTraitSet requiredOutputTraits,
   List<RelOptMaterialization> materializations,
   List<RelOptLattice> lattices) {
  final CalciteConnectionConfig config =
    planner.getContext().unwrap(CalciteConnectionConfig.class);
  if (config != null && config.forceDecorrelate()) {
   final RelBuilder relBuilder =
     RelFactories.LOGICAL_BUILDER.create(rel.getCluster(), null);
   return RelDecorrelator.decorrelateQuery(rel, relBuilder);
  }
  return rel;
 }
}

 public RelNode run(RelOptPlanner planner, RelNode rel,
   RelTraitSet requiredOutputTraits,
   List<RelOptMaterialization> materializations,
   List<RelOptLattice> lattices) {
  final CalciteConnectionConfig config =
    planner.getContext().unwrap(CalciteConnectionConfig.class);
  if (config != null && config.forceDecorrelate()) {
   final RelBuilder relBuilder =
     RelFactories.LOGICAL_BUILDER.create(rel.getCluster(), null);
   return RelDecorrelator.decorrelateQuery(rel, relBuilder);
  }
  return rel;
 }
}

if (this.context.config().forceDecorrelate()) {

if (this.context.config().forceDecorrelate()) {