TransactionAttribute annotation specifies whether the container is to invoke a business method
within a transaction context.
TransactionAttribute annotation can be used for session beans and message driven beans. It can only
be specified if container managed transaction demarcation is used.
The annotation can be specified on the bean class and/or it can be specified on methods of the class that are methods of the business interface or no-interface view.
TransactionAttribute annotation on the bean class means that it applies to all applicable
business methods of the class. Specifying the annotation on a method applies it to that method only. If the
annotation is applied at both the class and the method level, the method value overrides if the two disagree.
The values of the
TransactionAttribute annotation are defined by the enum
TransactionAttributeType. If the
TransactionAttribute annotation is not specified, and the
bean uses container managed transaction demarcation, the semantics of the
REQUIRED transaction attribute
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