com.ebmwebsourcing.easycommons.lang.reflect
Class ReflectionHelper

java.lang.Object
  com.ebmwebsourcing.easycommons.lang.reflect.ReflectionHelper

public final class ReflectionHelper
extends java.lang.Object

Author:

Adrien Ruffie - EBM WebSourcing

Method Summary

static java.util.Set<java.lang.Class<?>>	findAllImplementedInterfaces(java.lang.Class<?> clazz) Find all implemented interfaces recursively.
static java.util.Collection<java.lang.reflect.Method>	findMethodsThatReturnType(java.lang.Class<?> clazz, java.lang.Class<?> returnType)
static java.lang.reflect.Method	getDeclaredMethod(java.lang.Class<?> clazz, java.lang.String methodName, java.lang.Class<?>... parameterTypes) Get a declared method and wrap exceptions into unchecked exceptions.
static java.lang.Object	getFieldValue(java.lang.Object obj, java.lang.reflect.Field field)
static java.util.List<java.lang.reflect.Method>	getPublicDeclaredMethods(java.lang.Class<?> clazz) Get all public declared methods and wrap exceptions into unchecked exceptions.
static java.lang.reflect.Method	getPublicMethod(java.lang.Class<?> clazz, java.lang.String methodName, java.lang.Class<?>... parameterTypes) Get a public method and wrap exceptions into unchecked exceptions.
static java.lang.Object	invokeMethod(java.lang.Object obj, java.lang.reflect.Method method, java.lang.Object... args) Invoke a method by reflection.
static java.lang.Object	invokePrivateMethod(java.lang.Object obj, java.lang.String methodName, java.lang.Object... args) Invoke a private method by reflection.
static boolean	isOrInheritedFrom(java.lang.Class<?> clazz, java.lang.String canonicalName) Test if the specified class is or inherited from the class with the specified canonical name
static <T> java.lang.Class<T>	loadClass(java.lang.String className, java.lang.ClassLoader cl)
static <T> T	newInstance(java.lang.Class<T> clazz, java.lang.Object... args)
static <T> T	newInstance(java.lang.String className, java.lang.ClassLoader cl, java.lang.Object... args)
static void	setFieldValue(java.lang.Object obj, java.lang.reflect.Field field, java.lang.Object newValue)

Methods inherited from class java.lang.Object

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

Method Detail

findAllImplementedInterfaces

public static final java.util.Set<java.lang.Class<?>> findAllImplementedInterfaces(java.lang.Class<?> clazz)

Find all implemented interfaces recursively.

Parameters:

clazz - Class for which we want to know all implemented interfaces.

Returns:

An unmodifiable set of implemented interfaces.

getPublicMethod

public static final java.lang.reflect.Method getPublicMethod(java.lang.Class<?> clazz,
                                                             java.lang.String methodName,
                                                             java.lang.Class<?>... parameterTypes)

Get a public method and wrap exceptions into unchecked exceptions.

Parameters:

clazz -

methodName -

parameterTypes -

Returns:

getPublicDeclaredMethods

public static final java.util.List<java.lang.reflect.Method> getPublicDeclaredMethods(java.lang.Class<?> clazz)

Get all public declared methods and wrap exceptions into unchecked exceptions.

Parameters:

clazz -

Returns:

getDeclaredMethod

public static final java.lang.reflect.Method getDeclaredMethod(java.lang.Class<?> clazz,
                                                               java.lang.String methodName,
                                                               java.lang.Class<?>... parameterTypes)

Get a declared method and wrap exceptions into unchecked exceptions.

Parameters:

clazz -

methodName -

parameterTypes -

Returns:

invokeMethod

public static final java.lang.Object invokeMethod(java.lang.Object obj,
                                                  java.lang.reflect.Method method,
                                                  java.lang.Object... args)
                                           throws java.lang.reflect.InvocationTargetException

Invoke a method by reflection. This is a convenience method, wrapping all related exceptions into an unchecked exception.

Parameters:

obj - Object on which to invoke method.

method - Method to be invoked.

args - Method arguments.

Returns:

Result of invoked method.

Throws:

java.lang.reflect.InvocationTargetException

invokePrivateMethod

public static final java.lang.Object invokePrivateMethod(java.lang.Object obj,
                                                         java.lang.String methodName,
                                                         java.lang.Object... args)
                                                  throws java.lang.reflect.InvocationTargetException

Invoke a private method by reflection. This method can be used only in experimental projects This is a convenience method, wrapping all related exceptions into an unchecked exception.

Parameters:

obj - Object on which to invoke method.

method - Method to be invoked.

args - Method arguments.

Returns:

Result of invoked method.

Throws:

java.lang.reflect.InvocationTargetException

newInstance

public static final <T> T newInstance(java.lang.Class<T> clazz,
                                      java.lang.Object... args)
                           throws java.lang.reflect.InvocationTargetException

Throws:

java.lang.reflect.InvocationTargetException

newInstance

public static final <T> T newInstance(java.lang.String className,
                                      java.lang.ClassLoader cl,
                                      java.lang.Object... args)
                           throws java.lang.reflect.InvocationTargetException

Throws:

java.lang.reflect.InvocationTargetException

loadClass

public static final <T> java.lang.Class<T> loadClass(java.lang.String className,
                                                     java.lang.ClassLoader cl)

findMethodsThatReturnType

public static final java.util.Collection<java.lang.reflect.Method> findMethodsThatReturnType(java.lang.Class<?> clazz,
                                                                                             java.lang.Class<?> returnType)

getFieldValue

public static final java.lang.Object getFieldValue(java.lang.Object obj,
                                                   java.lang.reflect.Field field)

setFieldValue

public static final void setFieldValue(java.lang.Object obj,
                                       java.lang.reflect.Field field,
                                       java.lang.Object newValue)

isOrInheritedFrom

public static final boolean isOrInheritedFrom(java.lang.Class<?> clazz,
                                              java.lang.String canonicalName)

Test if the specified class is or inherited from the class with the specified canonical name

Parameters:

clazz - the class to check

superClassName - the class name to look for

Returns:

true if the