public void implementNext(AggregateCall call, JavaRel rel, Expression accumulator) {
OJAggImplementor aggImplementor = implementorTable.get(call.getAggregation());
aggImplementor.implementNext(this, rel, accumulator, call);
}
/** Generates the expression to retrieve the result of this aggregation. */
public Expression implementResult(AggregateCall call, Expression accumulator) {
OJAggImplementor aggImplementor = implementorTable.get(call.getAggregation());
return aggImplementor.implementResult(this, accumulator, call);
}
public Expression implementStartAndNext(AggregateCall call, JavaRel rel) {
OJAggImplementor aggImplementor = implementorTable.get(call.getAggregation());
return aggImplementor.implementStartAndNext(this, rel, call);
}