Adaptive Software Kevin Cella Graduate Seminar 02/04/2005

Agenda Adaptive Computing History Adaptive Software Formal Definition DemeterJ / AOP  Alternate Designs Advantages/Disadvantages Applications Reactions Wrap it up!

Adaptive Computing Hardware  Fault Tolerant  CPU Architectures EDGE  Digital Filter  Robot Controller Software  Engineering  Agents  Adaptive Programming  Networking

Agenda Adaptive Computing History Adaptive Software Formal Definition DemeterJ / AOP  Alternate Designs Advantages/Disadvantages Applications Reactions Wrap it up!

History 1982 Hades Zeus 1985-presentDemeter 1990 Traversal Strategy 1995Separation of Concerns 1996Xerox PARC - AOP

Agenda Adaptive Computing History Adaptive Software Formal Definition DemeterJ / AOP  Alternate Designs Advantages/Disadvantages Applications Reactions Wrap it up!

A Closer Look What is Adaptive Programming? An extension of OOP using graph theory and formal languages to further abstract collaborating classes and generate a family of programs from a common architectural graph.

Class Graph

Procedure Traversal Strategy => Propagation Pattern => Wrapper Definition => Generated Code

Result

Agenda Adaptive Computing History Adaptive Software Formal Definition DemeterJ / AOP  Alternate Designs Advantages/Disadvantages Applications Reactions Wrap it up!

Formal Definition Class Graph  Context-Free Grammar Traversal Strategies  Regular Expressions  NDFA Intersections Graph Theory  Construction edge  Subclass edges

Agenda Adaptive Computing History Adaptive Software Formal Definition DemeterJ / AOP  Alternate Designs Advantages/Disadvantages Applications Reactions Wrap it up!

Law of Demeter "Only talk to your immediate friends" The methods of a class should not depend in any way on the structure of any class, except the immediate top-level structure of their own class

Demeter Method Class Dictionary Propagation Pattern Traversal Strategy Demeter Grammar  Delayed Binding  Wrapper  Code Generation

AOP Join Points Pointcuts Advice Aspects Compiler - AspectJ  Weaving  Byte Code Manipulation  Observer Pattern  Java Language Extension

Alternate Designs Object-Oriented Databases XML/Java Data Binding Adaptable Plug and Play Components  Aspectual Collaborations  Aspectual Components DJ Java Library

Standardization – Design Patterns AP Patterns  Inventor’s Paradox  Structure-Shy Traversal  Structure-Shy Object  Context  Class Graph

Agenda Adaptive Computing History Adaptive Software Formal Definition DemeterJ / AOP  Alternate Designs Advantages/Disadvantages Applications Reactions Wrap it up!

Advantages Maintenance Simplified Implementation Understandability Readability Reusability Code Reduction

Disadvantages Security Weaving Language Extension  Grammar  Integrate into Current OO-Languages

Agenda Adaptive Computing History Adaptive Software  Examples Formal Definition DemeterJ / AOP  Alternate Designs Advantages/Disadvantages Applications Reactions Wrap it up!

Applications Hewlett-Packard  Planetary Computing  SmartFrog IBM  eLiza Testing EJB.NET

Agenda Adaptive Computing History Adaptive Software Formal Definition DemeterJ / AOP  Alternate Designs Advantages/Disadvantages Applications Reactions Wrap it up!

Reactions Lack of Standards Code Weaving Education Security Cost Analysis

Agenda Adaptive Computing History Adaptive Software Formal Definition DemeterJ / AOP  Alternate Designs Advantages/Disadvantages Applications  Coding Examples Thesis Wrap it up!

Looking Ahead AI Naturalistic Programming Tools packaged with SDK

Questions?

Discussion Topics Practicality  Large vs. Small Scale Applications New Tools Standards Education