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Java Source Code / Java Documentation » Testing » DDTUnit » junitx.ddtunit.util

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

junitx.ddtunit.util .PrivilegedAccessor

PrivilegedAccessor

public class PrivilegedAccessor (Code)

a.k.a. The "ObjectMolester"

This class is used to access a method or field of an object no matter what the access modifier of the method or field. The syntax for accessing fields and methods is out of the ordinary because this class uses reflection to peel away protection.

Here is an example of using this to access a private member. resolveName is a private method of Class.

 Class c = Class.class;
 System.out.println(PrivilegedAccessor.invokeMethod(c, "resolveName",
 "/net/iss/common/PrivilegeAccessor"));

author:
Charlie Hubbard (chubbard@iss.net)
author:
Prashant Dhokte (pdhokte@iss.net)

Method Summary
public static Object	getFieldValue(Object instance, String fieldName) Gets the value of the named field and returns it as an object.
public static Method	getMethod(Object instance, String methodName, Class[] classTypes)
public static Object	invokeMethod(Object instance, String methodName, Object arg) Calls a method on the given object instance with the given argument.
public static Object	invokeMethod(Object instance, String methodName, Object[] args) Calls a method on the given object instance with the given arguments.
public static void	setFieldValue(Object instance, String fieldName, Object value) Set the value of the named field and returns it as an object.

Method Detail

getFieldValue
public static Object getFieldValue(Object instance, String fieldName) throws IllegalAccessException, NoSuchFieldException(Code)
	Gets the value of the named field and returns it as an object. Parameters: instance - the object instance Parameters: fieldName - the name of the field an object representing the value of the field exception: IllegalAccessException - Description of the Exception exception: NoSuchFieldException - Description of the Exception

getMethod
public static Method getMethod(Object instance, String methodName, Class[] classTypes) throws NoSuchMethodException(Code)
	Parameters: instance - the object instance Parameters: methodName - the Parameters: classTypes - Description of the Parameter The method value exception: NoSuchMethodException - Description of the Exception

invokeMethod
public static Object invokeMethod(Object instance, String methodName, Object arg) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException(Code)
	Calls a method on the given object instance with the given argument. Parameters: instance - the object instance Parameters: methodName - the name of the method to invoke Parameters: arg - the argument to pass to the method Description of the Return Value exception: NoSuchMethodException - Description of the Exception exception: IllegalAccessException - Description of the Exception exception: InvocationTargetException - Description of the Exception See Also: PrivilegedAccessor.invokeMethod(ObjectStringObject[])

invokeMethod
public static Object invokeMethod(Object instance, String methodName, Object[] args) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException(Code)
	Calls a method on the given object instance with the given arguments. Parameters: instance - the object instance Parameters: methodName - the name of the method to invoke Parameters: args - an array of objects to pass as arguments Description of the Return Value exception: NoSuchMethodException - Description of the Exception exception: IllegalAccessException - Description of the Exception exception: InvocationTargetException - Description of the Exception See Also: PrivilegedAccessor.invokeMethod(ObjectStringObject)

setFieldValue
public static void setFieldValue(Object instance, String fieldName, Object value) throws IllegalAccessException, NoSuchFieldException(Code)
	Set the value of the named field and returns it as an object. Parameters: instance - the object instance Parameters: fieldName - the name of the field Parameters: value - The new value value exception: IllegalAccessException - Description of the Exception exception: NoSuchFieldException - Description of the Exception

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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