public Iterator getIterator()

in src/main/java/org/apache/commons/jexl3/internal/introspection/Uberspect.java [374:407]

• 31 lines of code
• 12 McCabe index (conditional complexity)

    public Iterator<?> getIterator(final Object obj) {
        if (!permissions.allow(obj.getClass())) {
            return null;
        }
        if (obj instanceof Iterator<?>) {
            return ((Iterator<?>) obj);
        }
        if (obj.getClass().isArray()) {
            return new ArrayIterator(obj);
        }
        if (obj instanceof Map<?, ?>) {
            return ((Map<?, ?>) obj).values().iterator();
        }
        if (obj instanceof Enumeration<?>) {
            return new EnumerationIterator<>((Enumeration<Object>) obj);
        }
        if (obj instanceof Iterable<?>) {
            return ((Iterable<?>) obj).iterator();
        }
        try {
            // look for an iterator() method to support the JDK5 Iterable
            // interface or any user tools/DTOs that want to work in
            // foreach without implementing the Collection interface
            final JexlMethod it = getMethod(obj, "iterator", (Object[]) null);
            if (it != null && Iterator.class.isAssignableFrom(it.getReturnType())) {
                return (Iterator<Object>) it.invoke(obj, (Object[]) null);
            }
        } catch (final Exception xany) {
            if (logger != null && logger.isDebugEnabled()) {
                logger.info("unable to solve iterator()", xany);
            }
        }
        return null;
    }