IRIS EDUCATION

Filter an array by comparing another array private static Set intersect(Set set1, Set set2) { return set1.stream() .filter(set2::contains) .collect(toSet()); }

OptimizeMixedDistinctAggregations$AggregateInfo.getOriginalNonDistinctAggregateArgs() public List getOriginalNonDistinctAggregateArgs() { return aggregations.values().stream() .filter(aggregation -> !aggregation.getMask().isPresent()) .map(Aggregation::getCall) .flatMap(function -> function.getArguments().stream()) .distinct() .map(Symbol::from) .collect(Collectors.toList()); }