Method copy

core/src/main/java/org/apache/calcite/rel/core/Project.java:152–155

(RelTraitSet traitSet,
      List<RelNode> inputs)

  //~ Methods ----------------------------------------------------------------

  @Override public final RelNode copy(RelTraitSet traitSet,
      List<RelNode> inputs) {
    return copy(traitSet, sole(inputs), exps, getRowType());
  }

  /**
   * Copies a project.