public boolean retainAll()

in tiles-request-api/src/main/java/org/apache/tiles/request/collection/RemovableKeySet.java [78:93]

• 16 lines of code
• 4 McCabe index (conditional complexity)

    public boolean retainAll(Collection<?> c) {
        Collection<String> realCollection = (Collection<String>) c;
        boolean retValue = false;
        Set<String> keysToRemove = new LinkedHashSet<String>();
        for (Enumeration<String> keys = request.getKeys(); keys.hasMoreElements();) {
            String key = keys.nextElement();
            if (!realCollection.contains(key)) {
                retValue = true;
                keysToRemove.add(key);
            }
        }
        for (String key : keysToRemove) {
            request.removeValue(key);
        }
        return retValue;
    }