org.apache.maven.surefire.util

Class ReflectionUtils

java.lang.Object

org.apache.maven.surefire.util.ReflectionUtils

public final class ReflectionUtils
extends Object

Author:

Kristian Rosenvold

Method Summary

Modifier and Type	Method and Description
static Constructor	getConstructor(Class<?> clazz, Class<?>... arguments)
static Method	getMethod(Class<?> clazz, String methodName, Class<?>... parameters)
static Method	getMethod(Object instance, String methodName, Class<?>... parameters)
static <T> T	instantiate(ClassLoader classLoader, String classname, Class<T> returnType)
static Object	instantiateObject(String className, Class[] types, Object[] params, ClassLoader classLoader)
static Object	instantiateOneArg(ClassLoader classLoader, String className, Class<?> param1Class, Object param1)
static Object	instantiateTwoArgs(ClassLoader classLoader, String className, Class<?> param1Class, Object param1, Class param2Class, Object param2)
static Object	invokeGetter(Class<?> instanceType, Object instance, String methodName)
static Object	invokeGetter(Object instance, String methodName)
static Object	invokeMethodChain(Class<?>[] classesChain, String[] noArgMethodNames, Object fallback) Method chain invoker.
static Object	invokeMethodWithArray(Object target, Method method, Object... args)
static Object	invokeMethodWithArray2(Object target, Method method, Object... args)
static Object	invokeSetter(Object target, Method method, Object value)
static void	invokeSetter(Object o, String name, Class<?> value1clazz, Object value)
static Object	invokeStaticMethod(Class<?> clazz, String methodName, Class<?>[] parameterTypes, Object[] parameters) Invoker of public static no-argument method.
static Class<?>	loadClass(ClassLoader classLoader, String className)
static Object	newInstance(Constructor constructor, Object... params)
static Method	tryGetMethod(Class<?> clazz, String methodName, Class<?>... parameters)
static Class<?>	tryLoadClass(ClassLoader classLoader, String className)

Methods inherited from class java.lang.Object

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

Method Detail

getMethod

public static Method getMethod(Object instance,
                               String methodName,
                               Class<?>... parameters)

getMethod

public static Method getMethod(Class<?> clazz,
                               String methodName,
                               Class<?>... parameters)

tryGetMethod

public static Method tryGetMethod(Class<?> clazz,
                                  String methodName,
                                  Class<?>... parameters)

invokeGetter

public static Object invokeGetter(Object instance,
                                  String methodName)

invokeGetter

public static Object invokeGetter(Class<?> instanceType,
                                  Object instance,
                                  String methodName)

getConstructor

public static Constructor getConstructor(Class<?> clazz,
                                         Class<?>... arguments)

newInstance

public static Object newInstance(Constructor constructor,
                                 Object... params)

instantiate

public static <T> T instantiate(ClassLoader classLoader,
                                String classname,
                                Class<T> returnType)

instantiateOneArg

public static Object instantiateOneArg(ClassLoader classLoader,
                                       String className,
                                       Class<?> param1Class,
                                       Object param1)

instantiateTwoArgs

public static Object instantiateTwoArgs(ClassLoader classLoader,
                                        String className,
                                        Class<?> param1Class,
                                        Object param1,
                                        Class param2Class,
                                        Object param2)

invokeSetter

public static void invokeSetter(Object o,
                                String name,
                                Class<?> value1clazz,
                                Object value)

invokeSetter

public static Object invokeSetter(Object target,
                                  Method method,
                                  Object value)

invokeMethodWithArray

public static Object invokeMethodWithArray(Object target,
                                           Method method,
                                           Object... args)

invokeMethodWithArray2

public static Object invokeMethodWithArray2(Object target,
                                            Method method,
                                            Object... args)
                                     throws InvocationTargetException

Throws:

InvocationTargetException

instantiateObject

public static Object instantiateObject(String className,
                                       Class[] types,
                                       Object[] params,
                                       ClassLoader classLoader)

tryLoadClass

public static Class<?> tryLoadClass(ClassLoader classLoader,
                                    String className)

loadClass

public static Class<?> loadClass(ClassLoader classLoader,
                                 String className)

invokeStaticMethod

public static Object invokeStaticMethod(Class<?> clazz,
                                        String methodName,
                                        Class<?>[] parameterTypes,
                                        Object[] parameters)

Invoker of public static no-argument method.

Parameters:

clazz - class on which public static no-argument methodName is invoked

methodName - public static no-argument method to be called

parameterTypes - method parameter types

parameters - method parameters

Returns:

value returned by methodName

Throws:

RuntimeException - if no such method found

SurefireReflectionException - if the method could not be called or threw an exception. It has original cause Exception.

invokeMethodChain

public static Object invokeMethodChain(Class<?>[] classesChain,
                                       String[] noArgMethodNames,
                                       Object fallback)

Method chain invoker.

Parameters:

classesChain - classes to invoke on method chain

noArgMethodNames - chain of public methods to call

fallback - returned value if a chain could not be invoked due to an error

Returns:

successfully returned value from the last method call; fallback otherwise

Throws:

IllegalArgumentException - if classes and noArgMethodNames have different array length