@Override
public void replaceInput(PlanNode oldInput, PlanNode newInput) {
if (input == oldInput) {
input = newInput;
input.setOutput(this);
}
}
public void setInput(PlanNode input) {
this.input = input;
input.setOutput(this);
}
protected BasePlanWithInput(PlanNode input) {
this.input = input;
if (input != null) input.setOutput(this);
}
