protected void addLocalCandidates(
Channel template,
List<Set<? extends NamedChannel>> broadcastPlanChannels,
RequestedGlobalProperties rgps,
List<PlanNode> target,
CostEstimator estimator) {
for (RequestedLocalProperties ilp :
this.inConn.getInterestingProperties().getLocalProperties()) {
final Channel in = template.clone();
ilp.parameterizeChannel(in);
// instantiate a candidate, if the instantiated local properties meet one possible local
// property set
outer:
for (OperatorDescriptorSingle dps : getPossibleProperties()) {
for (RequestedLocalProperties ilps : dps.getPossibleLocalProperties()) {
if (ilps.isMetBy(in.getLocalProperties())) {
in.setRequiredLocalProps(ilps);
instantiateCandidate(dps, in, broadcastPlanChannels, target, estimator, rgps, ilp);
break outer;
}
}
}
}
}
@Override
protected List<RequestedLocalProperties> createPossibleLocalProperties() {
RequestedLocalProperties props = new RequestedLocalProperties();
if (this.ordering == null) {
props.setGroupedFields(this.keys);
} else {
props.setOrdering(this.ordering);
}
return Collections.singletonList(props);
}