December 2014
Intermediate to advanced
434 pages
9h 48m
English
Content preview from Java EE 7 Development with WildFlyBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Configuring persistence
The Entity API looks great and is very intuitive, but how does the server know which database is supposed to store/query the entity objects? The persistence.xml file, which will be placed under src/main/resources/META-INF of your project, is the standard JPA configuration file. By configuring this file, you can easily switch from one persistence provider to another and thus, also from one application server to another (believe it or not, this is a huge leap towards application server compatibility).
In the persistence.xml file, we will basically need to specify the persistence provider and the underlying data source used. Simply create the following file under src/main/resources/persistence.xml:
<?xml version="1.0" encoding="UTF-8"?> ...
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