Rio Project 4.2 API Documentation

org.rioproject.bean
Class BeanHelper

java.lang.Object
  org.rioproject.bean.BeanHelper

public class BeanHelper
extends Object

A utility class that assists in invoking bean lifecycle events, either using annotations or declared method names

Author:

Dennis Reedy

Constructor Summary

BeanHelper()

Method Summary

static Method	getAnnotatedMethod(Object bean, Class<? extends Annotation> annClass)
static Class	getMethodFirstParamType(Method method)
static Class	getMethodFirstParamType(String methodName, Object o)
static Object	invokeBeanMethod(Object bean, Class<? extends Annotation> annClass, String methodName, Class[] classArgs, Object[] objectArgs) Helper to invoke a method on the bean using reflection
static void	invokeLifeCycle(Class<? extends Annotation> annClass, String methodName, Object bean) Invoke a lifecycle method

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BeanHelper

public BeanHelper()

Method Detail

invokeLifeCycle

public static void invokeLifeCycle(Class<? extends Annotation> annClass,
                                   String methodName,
                                   Object bean)
                            throws Exception

Invoke a lifecycle method

Parameters:

annClass - The annotation class to use

methodName - The lifecycle method name to invoke if the annotation is not found

bean - The bean to invoke methods on

Throws:

Exception - of errors occur

invokeBeanMethod

public static Object invokeBeanMethod(Object bean,
                                      Class<? extends Annotation> annClass,
                                      String methodName,
                                      Class[] classArgs,
                                      Object[] objectArgs)
                               throws Exception

Helper to invoke a method on the bean using reflection

Parameters:

bean - The bean to act on

annClass - The annotation class to use

methodName - The method name

classArgs - Class arguments

objectArgs - Object argument

Returns:

The result of dispatching the method

Throws:

Exception - If errors occur

getMethodFirstParamType

public static Class getMethodFirstParamType(String methodName,
                                            Object o)

getMethodFirstParamType

public static Class getMethodFirstParamType(Method method)

getAnnotatedMethod

public static Method getAnnotatedMethod(Object bean,
                                        Class<? extends Annotation> annClass)