org.apache.bytecode

Class ChainedParamReader

java.lang.Object

org.apache.bytecode.ChainedParamReader

public class ChainedParamReader
extends java.lang.Object

Description: In ParamReader class, user cannot get inherited method parameter from the class they passed in for performance reasons This class is walks up the inheritance chain. If the method is not found in the derived class, search in super class. If not found in the immedidate super class, search super class's super class, until the root, which is java.lang.Object, is reached. This is not an eager load since it only start searching the super class when it is asked to.

Constructor Summary

Constructors

Constructor and Description
ChainedParamReader(java.lang.Class cls) Processes a given class's parameter names.

Method Summary

Modifier and Type	Method and Description
java.lang.String[]	getParameterNames(java.lang.reflect.Constructor ctor) Returns the names of the declared parameters for the given constructor.
java.lang.String[]	getParameterNames(java.lang.reflect.Method method) Returns the names of the declared parameters for the given method.

Methods inherited from class java.lang.Object

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

Constructor Detail

ChainedParamReader

public ChainedParamReader(java.lang.Class cls)
                   throws java.io.IOException

Processes a given class's parameter names.

Parameters:

cls - the class which user wants to get parameter info from

Throws:

java.io.IOException

Method Detail

getParameterNames

public java.lang.String[] getParameterNames(java.lang.reflect.Constructor ctor)

Returns the names of the declared parameters for the given constructor. If we cannot determine the names, return null. The returned array will have one name per parameter. The length of the array will be the same as the length of the Class[] array returned by Constructor.getParameterTypes().

Parameters:

ctor -

Returns:

Returns array of names, one per parameter, or null

getParameterNames

public java.lang.String[] getParameterNames(java.lang.reflect.Method method)

Returns the names of the declared parameters for the given method. If cannot determine the names in the current class, search its parent class until we reach java.lang.Object. If still can not find the method, returns null. The returned array has one name per parameter. The length of the array will be the same as the length of the Class[] array returned by Method.getParameterTypes().

Parameters:

method -

Returns:

String[] Returns array of names, one per parameter, or null