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Exam : IBM 000-287
Title : Test287,enterprise appl.dev.with websphere studio v5.0


1. A developer is writing a session bean which makes use of several entity beans to perform a task. The session bean must record the invocation of the task using a LogEntry entity bean. The log entry must be made regardless of the success of the task. What supports BEST this behavior?
A. Provide two distinct operations on the session bean that would be invoked in sequence by the client code; one for creating the LogEntry and one for performing the task.
B. Use 'RequiresNew' transaction attribute on the LogEntry bean to ensure that the creation of the LogEntry occurs on a separate transaction.
C. Use 'Mandatory' transaction attribute on the LogEntry bean to ensure that the creation of the LogEntry occurs on a separate transaction.
D. Have the task session bean invoke a createLogEntry() method on another session bean to ensure that the LogEntry is created outside the task transaction.
Answer: B

2. A developer is writing a task() method, in a session bean, which makes use of several entity beans to perform a task. The session bean must record the invocation of the task using a LogEntry entity bean. The log entry must NOT be made if the task fails. Assume that the LogEntry bean is configured with 'Supports'. In order to GUARANTEE this behavior, the task() method of the session bean should be configured as:
A. bean-managed transaction and explicitly begin an UserTransaction before creating the LogEntry instance and performing the task logic. Finally, have the task() method commit or rollback the transaction based on the success/failure of the task.
B. 'Supports'. Within the task() method, create the LogEntry instance and perform the task logic. Finally, have the task method() call sessionContext.setRollBackOnly() if the task logic fails.
C. 'RequiresNew'. Within the method, create the LogEntry instance and perform the task logic. Finally, have the task() method call sessionContext.setRollBackOnly() if the task fails.
D. 'Mandatory'. Within the method, create the LogEntry instance and perform the task logic. Finally, have the task() method call sessionContext.setRollBackOnly() if the task fails.
Answer: AC

3. While developing an EJB for an EJB 2.0 compliant server, a developer runs into a problem. Whenever the method ejbContext.getUserTransaction() is called, an IllegalStateException is thrown. Which of the following are possible causes for this behavior?
A. The bean is an entity bean.
B. The bean is a session bean.
C. A transaction has not been started.
D. Container-managed transaction demarcation is being used.
Answer: AD

4. A developer discovers that an exception being thrown from a business method on an entity bean does not cause the transaction to rollback; a rollback was expected. What would correct this problem?
A. Ensure that the business method throws an instance of javax.jts.TransactionRolledbackException.
B. Ensure that the business method marks the current transaction for rollback by calling the setRollbackOnly() method on the EJBContext.
C. Call rollback() on the current UserTransaction object.
D. Call rollback() on the EJBContext.
E. call setRollbackOnly() on the UserTransaction object.
Answer: B

5. Customer and Address are BMP entity beans. The ejbCreate method for Customer is passed values for the properties of the Customer's address and it is necessary to ensure that an Address Entity is created as part of the same transaction that creates the Customer. Assuming the Address requires a reference to the Customer and there are no foreign key constraints enforced by the database, the BEST way to create the Address is to:
A. Insert the Address data into the address table in the ejbCreate method of Customer.
B. Insert the Address data into the address table in the ejbPostCreate method of Customer.
C. Invoke the create() method of AddressHome from the ejbCreate method of Customer.
D. Invoke the create() method of AddressHome from the ejbPostCreate method of Customer.
Answer: D