org.apache.commons.nabla.forward.analysis
Class ClassDifferentiator

java.lang.Object
  org.apache.commons.nabla.forward.analysis.ClassDifferentiator

public class ClassDifferentiator
extends Object

Differentiator for classes using forward mode.

This differentiator transforms classes implementing the UnivariateFunction interface and convert them to classes implementing the UnivariateDifferentiableFunction interface.

The differentiator creates a new class in the same package as the primitive class and which only preserve a private reference to the primitive instance. They access the current value of all necessary primitive instance fields thanks to reflection and bypassing access restrictions.

The original class bytecode is not changed at all.

Version:

$Id$

Constructor Summary

ClassDifferentiator(Class<? extends org.apache.commons.math3.analysis.UnivariateFunction> primitiveClass, Set<String> mathClasses)
Simple constructor.

Method Summary

void	differentiateMethod(String name, String primitiveDesc, String derivativeDesc) Differentiate a method.
org.objectweb.asm.tree.ClassNode	getDerivedClass() Get the derived class.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassDifferentiator

public ClassDifferentiator(Class<? extends org.apache.commons.math3.analysis.UnivariateFunction> primitiveClass,
                           Set<String> mathClasses)
                    throws DifferentiationException,
                           IOException

Simple constructor.

Parameters:

primitiveClass - primitive class

mathClasses - math implementation classes

Throws:

DifferentiationException - if class cannot be differentiated

IOException - if class cannot be read

Method Detail

differentiateMethod

public void differentiateMethod(String name,
                                String primitiveDesc,
                                String derivativeDesc)
                         throws DifferentiationException

Differentiate a method.

Parameters:

name - of the method

primitiveDesc - descriptor of the method in the primitive class

derivativeDesc - descriptor of the method in the derivative class

Throws:

DifferentiationException - if method cannot be differentiated

getDerivedClass

public org.objectweb.asm.tree.ClassNode getDerivedClass()

Get the derived class.

Returns:

derived class