Method copy

core/src/main/java/org/apache/calcite/rel/core/Join.java:334–338

(RelTraitSet traitSet, List<RelNode> inputs)

  }

  @Override public Join copy(RelTraitSet traitSet, List<RelNode> inputs) {
    assert inputs.size() == 2;
    return copy(traitSet, getCondition(), inputs.get(0), inputs.get(1),
        joinType, isSemiJoinDone());
  }

  /**
   * Creates a copy of this join, overriding condition, system fields and