Package org.zeroturnaround.javarebel.integration.util

Class ReflectionUtil

java.lang.Object

org.zeroturnaround.javarebel.integration.util.ReflectionUtil

public class ReflectionUtil
extends Object

Constructor Summary

Constructors

Constructor	Description
ReflectionUtil()

Method Summary

Modifier and Type	Method	Description
static void	copyDeclaredFields(Class<?> klass, Object src, Object dest)
static Method	findDeclaredMethod(Class<?> klass, String methodName, Object... args)	Find the single declared method in the class hierarchy that matches the name and parameters.
static Class<?>	getClassForAnyName(ClassLoader loader, String... names)
static Constructor<?>	getDeclaredConstructor(Class<?> klass, Class<?>... paramTypes)
static Field	getDeclaredField(Class<?> klass, String name)
static Method	getDeclaredMethod(Class<?> klass, String method, Class<?>... paramTypes)
static <T> T	getFieldValue(Class<?> orig, String field)
static <T> T	getFieldValue(Object o, String field)
static <T> T	invoke(Object target, String methodName)	Invoke a declared method with no parameters
static <T> T	invoke(Object target, String methodName, Object param1)	Invoke a declared method with one parameter.
static <T> T	invoke(Object target, String methodName, Object param1, Object param2)	Invoke a declared method with two parameters.
static <T> T	invoke(Object target, String methodName, Object param1, Object param2, Object param3)	Invoke a declared method with three parameters.
static Object	invokeByArgs(Object target, String methodName, Object... args)
static Object	invokeStaticByArgs(Class<?> klass, String methodName, Object... args)
static void	setAccessible(AccessibleObject m)
static void	setFieldValue(Object instance, Class<?> klass, String field, Object value)
static void	setFieldValue(Object instance, String field, Object value)
static void	setFieldValueOrFail(Object instance, Class<?> klass, String field, Object value)
static void	setFieldValueOrFail(Object instance, String field, Object value)

Methods inherited from class java.lang.Object

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

Constructor Details

ReflectionUtil

public ReflectionUtil()

Method Details

invoke

public static <T> T invoke(Object target,
 String methodName,
 Object param1,
 Object param2,
 Object param3)

Invoke a declared method with three parameters.

invoke

public static <T> T invoke(Object target,
 String methodName,
 Object param1,
 Object param2)

Invoke a declared method with two parameters.

invoke

public static <T> T invoke(Object target,
 String methodName,
 Object param1)

Invoke a declared method with one parameter.

invoke

public static <T> T invoke(Object target,
 String methodName)

Invoke a declared method with no parameters

invokeByArgs

public static Object invokeByArgs(Object target,
 String methodName,
 Object... args)

invokeStaticByArgs

public static Object invokeStaticByArgs(Class<?> klass,
 String methodName,
 Object... args)

findDeclaredMethod

public static Method findDeclaredMethod(Class<?> klass,
 String methodName,
 Object... args)
                                 throws NoSuchMethodException

Find the single declared method in the class hierarchy that matches the name and parameters.

Throws:

NoSuchMethodException

getFieldValue

public static <T> T getFieldValue(Object o,
 String field)

getFieldValue

public static <T> T getFieldValue(Class<?> orig,
 String field)

setFieldValue

public static void setFieldValue(Object instance,
 String field,
 Object value)

setFieldValueOrFail

public static void setFieldValueOrFail(Object instance,
 String field,
 Object value)
                                throws Exception

Throws:

Exception

setFieldValue

public static void setFieldValue(Object instance,
 Class<?> klass,
 String field,
 Object value)

setFieldValueOrFail

public static void setFieldValueOrFail(Object instance,
 Class<?> klass,
 String field,
 Object value)
                                throws Exception

Parameters:

instance - the instance

klass - lowest class in hierarchy to look into, restriction is needed when otherwise you might detect the same field name from unknown subclasses and change this instead

field - the field name

value - the new value of the field

Throws:

Exception - if field not set

setAccessible

public static void setAccessible(AccessibleObject m)

getDeclaredField

public static Field getDeclaredField(Class<?> klass,
 String name)

getDeclaredMethod

public static Method getDeclaredMethod(Class<?> klass,
 String method,
 Class<?>... paramTypes)

getDeclaredConstructor

public static Constructor<?> getDeclaredConstructor(Class<?> klass,
 Class<?>... paramTypes)

getClassForAnyName

public static Class<?> getClassForAnyName(ClassLoader loader,
 String... names)

copyDeclaredFields

public static void copyDeclaredFields(Class<?> klass,
 Object src,
 Object dest)