Java EE

Simple CRUD Example – Part 2

In the last article I showed you how to create a Debry database and set up a persistence unit. In this article I’ll create a very basic CRUD application. Using JSF 2, JPA 2 and EJB 3.1.

JPA2 Serialized Blob Never Really Null

This one got me late on a Friday (actually after work so I was doubly frustrated) and is to do with how JPA2 persists attributes of items that are not of basic Java types and which are also not entities. In order words attributes that implement Serializable and get shoved into BLOB fields.

Getting Started with JEE 6 – CDI Qualifiers

In the last article we developed an application that had two alternative implementations of an EJB based QuoteService which unfortunately ran aground because CDI couldn’t choose which of our implementation to use. In this article I’ll discuss how to let the system know which implementation to use by using CDI qualifiers.

Getting Started with JEE 6 – Multiple Implementations of an EJB

In the previous part of this series we developed an application that contained a simple no interface EJB which fed quotes to a QuoteBean which, in turn, supplied them to the JSF page. In this part I’ll modify the QuoteService to make it an interface and then provide two different implementations of that interface.