CreateDAO

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About this Tutorial

We will create an object and then some more classes to persist (save/retrieve/delete) that object from the database. In Java speak, we call the object a Plain Old Java Object (a.k.a. a POJO). This object basically represents a database table. The other classes will be:

• A Data Access Object (a.k.a. a DAO), an Interface and a Hibernate Implementation
• A JUnit class to test our DAO is working

AppFuse uses Hibernate for it's persistence layer. Hibernate is an Object/Relational (O/R) Framework that allows you to relate your Java Objects to database tables. It allows you to very easily perform CRUD (Create, Retrieve, Update, Delete) on your objects.

You can also use iBATIS as a persistence framework option. To install iBATIS in AppFuse, view the README.txt in contrib/ibatis. If you're using iBATIS over Hibernate, I expect you have your reasons and are familiar with the framework. I also expect that you can figure out how to adapt this tutorial to work with iBATIS.

I will tell you how I do stuff in the Real World in text like this.

Let's get started on creating a new Object, DAO and Test in AppFuse's architecture.

Table of Contents

• [1] Create a new Object and add XDoclet tags
• [2] Create a new database table from the object using Ant
• [3] Create a new DaoTest to run JUnit tests on the DAO
• [4] Create a new DAO to perform CRUD on the object
• [5] Configure Spring for the Person object and PersonDao
• [6] Run the DaoTest

Create a new Object and add XDoclet tags [#1]

The first thing we need to do is create an object to persist. Let's create a simple