JPA – Andy Gibson

Auditing Entities With JPA Events

Andy Gibson Articles

This article shows how you can leverage JPA Lifecycle Events to automate the filling in of audit information. The first example uses a base entity class with lifecycle events that looks for a time stamp interface to determine whether the entity is audited.

Deterring “ToMany” Relationships in JPA models

Andy Gibson Articles

This article considers the issues of one to many relationships from the JPA model, and looks at an alternative strategy to provide more efficient and fine grained data access, to build more robust and lightweight applications and web services.

Conversational CRUD in Java EE 6

Andy Gibson Tutorials

This tutorial will demonstrate a pattern for creating CRUD applications in JSF and Java EE 6. While this is not the only way of implementing this mechanism, it does promote re-use and can give you essentially zero code CRUD pages requiring just the view code. The goal is to provide a single structure that provides […]

Knappsack Archetypes Part 2

Andy Gibson Articles

In part 1, we looked at the basic structure and configuration of the project that is common in all the archetypes. This time we’ll look at the minimal archetype that contains some more functionality and a number of different classes used to implement that functionality.

Knappsack Archetypes Part 1

Andy Gibson Articles

This set of articles will document the contents of the Java EE archetypes for Maven. The archetypes come in four flavors, basic,minimal, sandbox and sandbox demo with each one being based on the previous one. In part 1, we’ll give an overview of the archetypes and the structure and configuration used in all of the […]

A Guide to Spigot For Seam Developers

Andy Gibson Articles

Note : Spigot has been renamed to DataValve. (Edit : I renamed this post so it doesn’t seem like Spigot is just for Seam, Spigot can be used with different frameworks or without any at all. However, I wrote this post since Spigot is so familiar to the Seam EntityQuery that it should be easy […]

Using Composition in Object Modeling

Andy Gibson Articles

Using composition over inheritance is a common design pattern that is often discussed in terms of designing business logic components. However, composition can solve a number of problems in domain object modeling that are created by relying on inheritance to share interface or functionality. Composition is used to delegate implementation in logical units by enlisting […]

Glassfish, Netbeans and JSF 2.0 Test Drive

Andy Gibson Articles

I’ve spent some time in the last couple of weeks playing around with Glassfish, Netbeans 6.8 Beta (and milestone 2 before it) and JSF 2.0, and I have to say that this is turning out to be a really good set of development libraries and tools.

Writing Multi-Maven Module Hibernate JPA Web apps

Andy Gibson Links

Here’s a couple of links regarding building Multi Module Apps with the Hibernate JPA Implementation. It was a subject I was starting to look at and these two articles just happened to cover both areas that I was interested in. Thought I’d share them and if nothing else, I know where to find them the […]

Using Session Scoped Entities Locally in Seam

Andy Gibson Articles

One of the problems faced by Seam users is the disconnect between the session scoped entity instances and using them in more local scopes. A good example is a session scoped User instance that is loaded when the user logs in and is outjected into the session scope. This user instance is available for the […]