jpa/eclipselink.jpa.test/resource/eclipselink-beanvalidation-model/persistence.xml

<persistence 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 persistence_2_0.xsd" version="2.0">
    <persistence-unit name="beanvalidation" transaction-type="RESOURCE_LOCAL">
        <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
        <class>org.eclipse.persistence.testing.models.jpa.beanvalidation.Employee</class>
        <class>org.eclipse.persistence.testing.models.jpa.beanvalidation.Project</class>
        <class>org.eclipse.persistence.testing.models.jpa.beanvalidation.Address</class>
        <validation-mode>CALLBACK</validation-mode>
    </persistence-unit>
</persistence>