public static Method getMatchingAccessibleMethod()

in src/main/java/org/apache/commons/lang3/reflect/MethodUtils.java [676:729]
44 lines of code
20 McCabe index (conditional complexity)

    public static Method getMatchingAccessibleMethod(final Class<?> cls,
            final String methodName, final Class<?>... parameterTypes) {
        try {
            final Method method = cls.getMethod(methodName, parameterTypes);
            MemberUtils.setAccessibleWorkaround(method);
            return method;
        } catch (final NoSuchMethodException e) { // NOPMD - Swallow the exception
        }
        // search through all methods
        final Method[] methods = cls.getMethods();
        final List<Method> matchingMethods = new ArrayList<>();
        for (final Method method : methods) {
            // compare name and parameters
            if (method.getName().equals(methodName) &&
                    MemberUtils.isMatchingMethod(method, parameterTypes)) {
                matchingMethods.add (method);
            }
        }

        // Sort methods by signature to force deterministic result
        matchingMethods.sort(METHOD_BY_SIGNATURE);

        Method bestMatch = null;
        for (final Method method : matchingMethods) {
            // get accessible version of method
            final Method accessibleMethod = getAccessibleMethod(method);
            if (accessibleMethod != null && (bestMatch == null || MemberUtils.compareMethodFit(
                        accessibleMethod,
                        bestMatch,
                        parameterTypes) < 0)) {
                bestMatch = accessibleMethod;
            }
        }
        if (bestMatch != null) {
            MemberUtils.setAccessibleWorkaround(bestMatch);
        }

        if (bestMatch != null && bestMatch.isVarArgs() && bestMatch.getParameterTypes().length > 0 && parameterTypes.length > 0) {
            final Class<?>[] methodParameterTypes = bestMatch.getParameterTypes();
            final Class<?> methodParameterComponentType = methodParameterTypes[methodParameterTypes.length - 1].getComponentType();
            final String methodParameterComponentTypeName = ClassUtils.primitiveToWrapper(methodParameterComponentType).getName();

            final Class<?> lastParameterType = parameterTypes[parameterTypes.length - 1];
            final String parameterTypeName = (lastParameterType==null) ? null : lastParameterType.getName();
            final String parameterTypeSuperClassName = (lastParameterType==null) ? null : lastParameterType.getSuperclass().getName();

            if (parameterTypeName!= null && parameterTypeSuperClassName != null && !methodParameterComponentTypeName.equals(parameterTypeName)
                    && !methodParameterComponentTypeName.equals(parameterTypeSuperClassName)) {
                return null;
            }
        }

        return bestMatch;
    }