CODE EXAMPLE FOR JAVA

How to activate an entity listener for all entities

<entity-mappings>
    <persistence-unit-metadata>
        <persistence-unit-defaults>
            <entity-listeners>
                <entity-listener class="org.thoughts.on.java.model.MyEntityListener"/>
            </entity-listeners>
        </persistence-unit-defaults>
    </persistence-unit-metadata>
</entity-mappings>