filter-by-predicates.java

    private Optional<TemplateRule> findBestTemplateRule(List<TemplateRule> list) {

        Predicate<TemplateRule> byClientId = r -> Objects.equals(r.getClientId(), shipment.getClientId());
        Predicate<TemplateRule> byLastMile = r -> r.getLastMile() == shipment.getLastMileEnum();
        Predicate<TemplateRule> byFirstMile = r -> r.getFirstMile() == shipment.getFirstMileEnum();
        Predicate<TemplateRule> byFirstMileAndLastMile = byFirstMile.and(byLastMile);

        Stream<TemplateRule> one = list.stream().filter(byFirstMileAndLastMile.and(byClientId));
        Stream<TemplateRule> two = list.stream().filter(byFirstMile.and(byClientId));
        Stream<TemplateRule> three = list.stream().filter(byLastMile.and(byClientId));
        Stream<TemplateRule> four = list.stream().filter(byClientId);        
        Stream<TemplateRule> five = list.stream().filter(byFirstMileAndLastMile);
        Stream<TemplateRule> six = list.stream().filter(byFirstMile);
        Stream<TemplateRule> seven = list.stream().filter(byLastMile);
        Stream<TemplateRule> eight = list.stream();

        return Stream.of(one, two, three, four, five, six, seven, eight)
                .map(Stream::findAny)
                .filter(Optional::isPresent)
                .findFirst()
                .orElse(Optional.empty());
    }