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Xenogenetics for PL/SQL: Infusing with Java Best Practices and Design Patterns (presentation at OOW 2010)

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2 years ago
by Lucas Jellema in , , ,

Xenogenetics for PL/SQL: Infusing with Java Best Practices and Design Patterns – Alex Nuijten and Lucas Jellema

PL/SQL is a venerable programming language that is both vital and very much alive. This session will discuss how we further rejuvenate and enhance the way we create PL/SQL programs. We’ll tap into the world of .NET, Java, and other modern programming language to do some cherry picking: what are the very best practices, concepts, and design patterns and how can we apply them to PL/SQL? We’ll explain and demonstrate dependency injection, the observer pattern based on listeners, aspect-oriented programming (AOP), the decorator and template pattern, use of user-defined nested types, and collections.

PL/SQL is a venerable programming language that is both vital and very much alive. This session will discuss how we further rejuvenate and enhance the way we create PL/SQL programs. We’ll tap into the world of .NET, Java, and other modern programming language to do some cherry picking: what are the very best practices, concepts, and design patterns and how can we apply them to PL/SQL? We’ll explain and demonstrate dependency injection, the observer pattern based on listeners, More >

Vacatures bij AMIS services

EJB Dependency Injection of Session Bean Facade in JSF 1.2 on WebLogic 10.3 (JSF with JPA)

4 years ago
by Lucas Jellema in , , , ,

 

As I was preparing for my Devoxx presentation next Monday, I decided to look at the somewhat harder way of integrating a JPA based business tier into a JavaServer Faces web tier. The easy way – when using the ADF 11g framework in JDeveloper 11g is creating a Data Control for the Session Facade Bean. The Web Application can create data bindings for entities, entity collections and operations exposed in the Session Facade Bean that completely hide the injection or lookup details from the web tier developer. It’s the ADF responsibility to find the session bean and manage references to it.

However, if you do not use ADF, you need to establish the link between the Web Application and the JPA Business Service yourself.

The JEE 5 way of achieving this consists of a few simple steps – on top of the JPA entity definitions: (more…)

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