com.ebmwebsourcing.easycommons.reflect
Class ReflectionHelper

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

public final class ReflectionHelper
extends java.lang.Object

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

Throws:

java.lang.reflect.InvocationTargetException

findMethodsThatReturnType

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

getFieldValue

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

setFieldValue

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