Aspect-Oriented Programming for PHP
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The document presents an overview of PHPAspect, a framework for aspect-oriented programming (AOP) in PHP. It discusses AOP's benefits over traditional object-oriented programming (OOP), highlights new features of PHPAspect, and provides examples of how aspects can be used to enhance business logic while separating technical concerns. The conclusion addresses future developments and the integration of PHPAspect with other systems.
![phpAspect A spect- O riented P rogramming William Candillon { [email_address] }](https://image.slidesharecdn.com/aspectoriented-programming-for-php-2368/85/Aspect-Oriented-Programming-for-PHP-1-320.jpg)
![A cknowledgment Gilles Vanwormhoudt ( [email_address] ) PhD in computer science at Telecom Lille Collaborator on the phpAspect project Yijun Yu ( [email_address] ) PhD in computer science, University of Toronto Author of Yaxx Sebastian Bergmann ( [email_address] ) Diploma Thesis, University of Bonn. Google soc mentor](https://image.slidesharecdn.com/aspectoriented-programming-for-php-2368/85/Aspect-Oriented-Programming-for-PHP-3-320.jpg)
![A spect DOM XPath is a way better than SQL for queries on tree structure. By weaving DOM interfaces we can use Xpath expressions on: your object graph in a visitor design pattern SQL Query : SELECT * FROM book, books, author WHERE books.idbook = {$_SESSION['id']} AND book.id = books.idbook AND book.author = author.id AND author.name = 'Alexandre Jardin' Xpath query : //author[@name = 'Alexandre Jardin']](https://image.slidesharecdn.com/aspectoriented-programming-for-php-2368/85/Aspect-Oriented-Programming-for-PHP-29-320.jpg)
Aspect-Oriented Programming for PHP
- 1. phpAspect A spect- O riented P rogramming William Candillon { [email_address] }
- 2. O verview Acknowledgment Introduction to AOP phpAspect New features Conclusion
- 3. A cknowledgment Gilles Vanwormhoudt ( [email_address] ) PhD in computer science at Telecom Lille Collaborator on the phpAspect project Yijun Yu ( [email_address] ) PhD in computer science, University of Toronto Author of Yaxx Sebastian Bergmann ( [email_address] ) Diploma Thesis, University of Bonn. Google soc mentor
- 6. O bject- O riented P rogramming Advantages Business modeling Reusable technicals components Design patterns Frameworks Vertical organization Inheritance and interfaces Objects graph
- 7. T echnicals aspects in OOP
- 8. S ymptoms Inheritance can't modularize horizontal concerns Code Tangling Code scattering Difficulties Code comprehension Code reusability Code evolution
- 9. A spect- O riented P rogramming A new programming paradigm... Working with OOP Split technicals concerns from the business logic ...defining mechanisms for Writing aspects as a new software entity Wrapping crosscutting concerns Coating business logic with technicals concerns
- 10. G eneral idea Inversion of technicals dependencies
- 11. J oinpoints Identified instructions in the program flow: Method execution (1) Attribute writing/reading (2) Objects construction (3) Method call (4) Objects destruction (5) Exception throwing (6) A pointcut is a logical association of joinpoints 1 2 3 4 5 6
- 12. C ode advices Injected code in pointcuts 3 types: Before Around After Aspect and joinpoint reflection to explore the context Methods, arguments, targeted object etc...
- 13. I nter-type declarations Inter-type attributes Inter-type constants Inter-type methods
- 14. W ildcards and operators * denotes any method visibility, method scope, class name, method name or parameters number. + denotes type or any subclass or subinterface of a given type in a join point . The || offers the possibility to combine join points in an advice declaration.
- 15. S imple persistence example Business logic Aspect
- 16. phpAspect
- 17. PHP A highly dynamic language... Easy to learn Object-Oriented Mainly designed for web applications Used in more than 25 millions of websites. ...more and more used outside its web context Rapid prototyping PHP-GTK applications Command-Line interpreter
- 18. S tate of the art in PHP phpAspect Static approach Compiler architecture (Lex/Yacc) Seasar Dynamic approach Using PHP containers GAP, by Sebastian Bergmann Only conceptual for now Other projects: AOPHP, aspectPHP, AOP Library for PHP etc...
- 19. A virtual cart A client add products in the cart. Business logic without any technicals concerns.
- 20. A logging aspect Log every added articles and give status of the order After weaving Result
- 21. A security aspect Make a filter on the customer input Protection against cross scripting injection Result
- 22. S ingleton aspect All singletons are factorized in the same aspect The link between a class and its singleton is null
- 23. C urrent weaving chain
- 24. New features
- 25. N ew weaving chain
- 26. F eatures coming very soon Logicals operators: Enum operator: New joinpoints Reusable aspects mechanisms (with Smarty) Aspect introspection
- 27. W eb specifics joinpoints PHP has a lot of globals variables with very sensitives informations: $_GET, $_POST, $_COOKIE, $_SERVER, $_SESSION We need to intercept writing/reading of these for security matters. File joinpoint
- 28. P ersistence with phpAspect There is great tools existing for object persistence: Propel for example Problem: If you regenerate the classes, you lose your businesses operations Solution: generate an aspect of persistence with Propel from an aspect template and classes annotations
- 29. A spect DOM XPath is a way better than SQL for queries on tree structure. By weaving DOM interfaces we can use Xpath expressions on: your object graph in a visitor design pattern SQL Query : SELECT * FROM book, books, author WHERE books.idbook = {$_SESSION['id']} AND book.id = books.idbook AND book.author = author.id AND author.name = 'Alexandre Jardin' Xpath query : //author[@name = 'Alexandre Jardin']
- 30. A spects templates (1/2) Put parameters on aspects with Smarty A way to define generic and reusables aspects. Parameters based on the XML format. Aspect template construction: Parameters evaluation with Smarty Result: an aspect ready to be weaved
- 31. A spects templates (1/2) XML parameters: Template:
- 32. L imitations Aspects composition Static weaving Debugging There is no PHP IDE having AOP features
- 33. C onclusion phpAspect: Wiki: http://phpaspect.org Blog: http://wcandillon.blogspot.com Perspectives: PHP 6 ready (namespaces) Aspect composition Type inference Framework integration Looking for an internship: http://wcandillon.netcv.org
- 34. R eferences AOSD community and projects: http://aosd.net AspectJ in action , by Ramnivas Laddad Mastering AspectJ , by John & Wiley, Joseph D. Gradecki, Nicholas Lesiecki Programmation Orientée Aspect pour Java , by Renaud Pawlak, Jean-Philippe Retaillé et Lionel Seinturier.
- 35. Demo
- 36. Questions ?