Packaging EJB 3 applications - EJB 3 in Action - page 540

You used @TransactionAttribute to specify that the transaction attribute for a bean
method be REQUIRES_NEW . If you want to override it to use REQUIRED , then use the
following descriptor:
In this example, the assembly-descriptor element is used to specify a transaction
attribute . In addition, the ejb-name element in the assembly descriptor matches
the original name specified with the @Stateless annotation in the bean class.
13.3.5. Specifying default interceptors
Interceptors (as you'll recall from chapter 5 ) allow you to implement crosscutting code in
an elegant manner. An interceptor can be defined at the class or method level, or a default
interceptor can be defined at the module level for all EJB classes in the EJB-JAR. We men-
tioned that default interceptors for an EJB module can only be defined in the ejb-jar.xml
deployment descriptor. The following listing shows how to specify default interceptors for
an EJB module.
Listing 13.6. Default interceptor setting in ejb-jar.xml