Managing the orm.xml file

When creating a JPA project, (see "Creating a new JPA project") you can also create the orm.xml file that defines the mapping metadata and defaults.

Eclipse creates the META-INF\orm.xml file in your project's directory:

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="<PERSISTENCE_VERSION>"
      xmlns="http://java.sun.com/xml/ns/persistence"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
      http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
  <persistence-unit name="<PERSISTENCE_UNIT_NAME>">
    <provider="<PERSISTENCE_PROVIDER>" />
  </persistence-unit>
</persistence>

 

Create New JPA Project wizard

 

Working with orm.xml file

 

The orm.xml file