The section in which all transaction-configuration has to occur.

Assigns a transactional attribute to one or more methods.

<assembly-descriptor> <container-transaction> ... </container-transaction> </container-transaction>

Specifies the bean from which to chose the methods in this container-transaction

Specifies the methods that take on the transaction attribute defined for this container-transaction.

There are three ways of specifying methods:

• Chose all methods from this ejb-name:

  <method> <ejb-name>student</ejb-name> <method-name>*</method-name> </method>

• Specify a transaction attribute for one particular method:

  <method> <ejb-name>student</ejb-name> <method-name>getName</method-name> </method>

• If there are methods with the same name but different parameter lists that require different transaction contexts, they can be differentiated by specifying the parameter lists:

  <method> <ejb-name>student</ejb-name> <method-name>getName</method-name> <method-params> <method-param>java.lang.String</method-param> <method-param>int</method-param> </method-params> </method>

Defines which transaction context the specified method(s) takes on.

The EJB 2.0 spec provides six options for transactional attributes:

Attribute	Meaning
NotSupported	Must execute without a transactional context.
Supports	If called from withing a transactional context, will join that context.
RequiresNew	Always creates a new transactional context.
Required	Will use the current context if one exists, or create a new one if none exists.
Mandatory	Must be called with an existing transaction context or will throw javax.transaction.TransactionRequiredException.
Never	Suspends any existing transaction context.