/**
* Creates a RelFieldTrimmer.
*
* @param validator Validator
*/
public RelFieldTrimmer(SqlValidator validator) {
Util.discard(validator); // may be useful one day
this.trimFieldsDispatcher =
ReflectUtil.createMethodDispatcher(
TrimResult.class, this, "trimFields", RelNode.class, BitSet.class, Set.class);
}
/**
* Creates a new FarragoReduceExpressionsRule object.
*
* @param relClass class of rels to which this rule should apply
*/
private FarragoReduceExpressionsRule(Class<? extends RelNode> relClass) {
super(
new RelOptRuleOperand(relClass, ANY),
"FarragoReduceExpressionsRule:" + ReflectUtil.getUnqualifiedClassName(relClass));
}