private static Comparator<Val> getAsStringComparator(final boolean isCaseSensitive) {
        return isCaseSensitive
                ? AS_CASE_SENSITIVE_STRING_COMPARATOR
                : AS_CASE_INSENSITIVE_STRING_COMPARATOR;
    }
@return True if neither value has a decimal part.
stroom-query/stroom-query-language/src/main/java/stroom/query/language/functions/ValComparators.java