Set getNameTransitions()

in src/main/software/amazon/event/ruler/NameState.java [254:285]

• 22 lines of code
• 7 McCabe index (conditional complexity)

    Set<NameState> getNameTransitions(final Event event, final ArrayMembership membership) {

        final Set<NameState> nextNameStates = new HashSet<>();

        if (mustNotExistMatchers.isEmpty()) {
            return nextNameStates;
        }

        Set<NameMatcher<NameState>> absentValues = new HashSet<>(mustNotExistMatchers.values());

        for (Field field :  event.fields) {
            NameMatcher<NameState> matcher = mustNotExistMatchers.get(field.name);
            if (matcher != null) {
                // we should only consider the field who doesn't violate array consistency.
                // normally, we should first check array consistency of field, then check mustNotExistMatchers, but
                // for performance optimization, we first check mustNotExistMatchers because the hashmap.get is cheaper
                // than AC check.
                if (ArrayMembership.checkArrayConsistency(membership, field.arrayMembership) != null) {
                    absentValues.remove(matcher);
                    if (absentValues.isEmpty()) {
                        break;
                    }
                }
            }
        }

        for (NameMatcher<NameState> nameMatcher: absentValues) {
            nextNameStates.add(nameMatcher.getNextState());
        }

        return nextNameStates;
    }