![]() ![]() ![]() ![]() We’re defining a hibernatePlayground persistence unit with a single persistent class called Car. ![]() Persistent class Car in our case, represents a Car database table. Each persistence unit has to contain a data source and a set of persistent classes in tags. It should contain at least one, uniquely named persistence unit. It’s placed under META-INF folder by default and has a relatively simple structure. Setting up Hibernate persistence.xml configuration fileĪ file called persistence.xml is the main Hibernate configuration point. MySql connector will ensure proper MySql Jdbc Driver is at our disposal. Now it’s all available within hibernate-core package. Previously, configuring JPA with Hibernate required another reference to hibernate-entitymanager. We’re adding a dependency to the newest Hibernate version, available at the moment of writing this article. There are just two dependencies which you need to add to your project to start using framework in this form. This is not required, but it’s a common practice to isolate entity, data access and service layers, to ensure readability and separate each layer’s concerns. I’ll also add a Dao, or Repository class, which will provide data access functionality to other classes in our application. Below you’ll find instructions on how to do it.Ĭonfiguring Hibernate in a Java application means completing these three simple steps: You just need to remember to add a dependency to the right JDBC driver. For simplicity, I’m using MySql as a database provider, but you’re free to use any vendor you like. The database structure we’ll use with this example is really simple. I encourage you to clone it and play around. Full Maven project can be found right here on Github. This article contains only the most important code snippets. We will set up Hibernate with Maven, picking the right dependencies and annotating entity classes. You’ll learn where to place the configuration file and which configuration options may be helpful. Now it’s time to see how to properly configure it in a standalone Java application.Īfter this step by step tutorial, you’ll have your first Hibernate JPA project ready. In the previous article, we learned how Hibernate can assist in database persistence. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |