Package org.apache.maven.surefire.api.util

Class ReflectionUtils

java.lang.Object

org.apache.maven.surefire.api.util.ReflectionUtils

public final class ReflectionUtils
extends Object

Author:

Kristian Rosenvold

Method Summary

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

invokeGetter

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

getConstructor

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

tryGetConstructor

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

newInstance

public static <T> T newInstance(Constructor<?> constructor,
                                Object... params)

instantiate

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

instantiateOneArg

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

invokeSetter

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

invokeSetter

public static <T> T invokeSetter(Object target,
                                 Method method,
                                 Object value)

invokeMethodWithArray

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

invokeMethodWithArray2

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

Throws:

InvocationTargetException

instantiateObject

public static <T> T instantiateObject(String className,
                                      Class<?>[] types,
                                      Object[] params,
                                      ClassLoader cl)

tryLoadClass

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

loadClass

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

reloadClass

public static Class<?> reloadClass(ClassLoader classLoader,
                                   Object source)
                            throws ReflectiveOperationException

Throws:

ReflectiveOperationException

invokeStaticMethod

public static <T> T 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 <T> T 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