public Void visitLocalRef(RexLocalRef inputRef) {
super.visitLocalRef(inputRef);
if (inputRef.getIndex() >= limit) {
throw new IllegalForwardRefException();
}
return null;
}
public Void visitInputRef(RexInputRef inputRef) {
super.visitInputRef(inputRef);
if (inputRef.getIndex() >= inputRowType.getFieldCount()) {
throw new IllegalForwardRefException();
}
return null;
}