public static Method getAccessibleMethod()

in src/main/java/org/apache/commons/beanutils2/MethodUtils.java [178:219]
30 lines of code
9 McCabe index (conditional complexity)

    public static Method getAccessibleMethod(Class<?> clazz, Method method) {
        // Make sure we have a method to check
        if (method == null) {
            return null;
        }

        // If the requested method is not public we cannot call it
        if (!Modifier.isPublic(method.getModifiers())) {
            return null;
        }

        boolean sameClass = true;
        if (clazz == null) {
            clazz = method.getDeclaringClass();
        } else {
            if (!method.getDeclaringClass().isAssignableFrom(clazz)) {
                throw new IllegalArgumentException(clazz.getName() + " is not assignable from " + method.getDeclaringClass().getName());
            }
            sameClass = clazz.equals(method.getDeclaringClass());
        }

        // If the class is public, we are done
        if (Modifier.isPublic(clazz.getModifiers())) {
            if (!sameClass && !Modifier.isPublic(method.getDeclaringClass().getModifiers())) {
                setMethodAccessible(method); // Default access superclass workaround
            }
            return method;
        }

        final String methodName = method.getName();
        final Class<?>[] parameterTypes = method.getParameterTypes();

        // Check the implemented interfaces and subinterfaces
        method = getAccessibleMethodFromInterfaceNest(clazz, methodName, parameterTypes);

        // Check the superclass chain
        if (method == null) {
            method = getAccessibleMethodFromSuperclass(clazz, methodName, parameterTypes);
        }

        return method;
    }