Consider the following classes: 11.©Entity Auction {
12.
@ld int id;
13.
@OneToOne Item item;
14.}
11.©Entity Itemj
12.
@ld int id;
13.
@OneToOne (mappedBy="item") Auction auction;
14.
}
Given that the Auction entity maps to an AUCTION database table and the Item entity maps to an ITEM database table, which statement is correct assuming there is NO mapping descriptor?
A. The relationship is mapped to a foreign key in the ITEMtable.Which three roles will typically edit an ejb-jar? (Choose three.)
A. DeployerA developer wants to create a portable EJB 3.0 application that includes the following class definition for the Entity Account:
11.
©Entity
12.
@Entityl_isteners(com. acme.AlertMonitor. class)
13.
public class Account {
14.
// more code here
15.
@PrePersist
16.
protected void validateCreate0 {/* more code here */} 17.}
Which statement is correct?
A. The validateCreate method may NOT throwruntimeexceptions.A Java Persistence application uses entities mapped to tables from two datasources in the same transaction. What statement is correct?
A. This is NOT possible.A session bean calls the setRollbackOnly method on the EJBContext interface within a business method with an active transaction. Which two are correct? (Choose two.)
A. The transaction timeout is immediately disabled.A User entity is in a one-to-many relationship with a Book entity. A developer writes a query to delete users that have a first name of Fred1or 'Ginger', and writes the following Java Persistence query language statement: DELETE FROM User u WHERE u.name IN (Fred', "Ginger) If the query fails with a PersistenceException, what can be the cause?
A. The syntax of the query is NOT correct.Which statement is true about the use of a persist operation in a transaction?
A. If a user persists a detached object it always becomes managed.A Java Persistence application uses the EntityManager.flush method to synchronize the current persistence context with the database. Which two statements are correct? (Choose two.)
A. The flush method might cause the persist operation to be cascaded to related entities.Given :
public class MyException extends Exception {}
The business interface Foo declares a method work0: I. public void work0 throws MyException;
The bean class FooBean contains the following:
10.©Stateless
II. @Remote(Foo.class)
12.
public class FooBean {
13.
public void workQ throws MyException {
14.
//do some work not shown here
15.
throw new MyException0;
16.}
Assuming there is no deployment descriptor, which statement is true when the workQ method is invoked by a client with an existing transaction context and execution reaches Line 15?
A. The container does notroll back thetransaction.A developer writes a stateless session bean with one local business interface and with containermanaged transactions. All business methods have transaction attribute REQUIRED. The bean has an injected field sessionCtx of the type SessionContext. Which two operations are allowed in a business method of the bean? (Choose two.)
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