Red Hat Application Server, Руководство пользователя

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Chapter 26. JMS User’s Guide 201
26.2.5. Authentication with JMS
If your JMS implementation performs user authentication, the following methods can be used on
connection factories:
•
The
createConnection(String userName, String password)
method can be used on
ConnectionFactory
•
The
createQueueConnection(String userName, String password)
method can be used
on
QueueConnectionFactory
•
The
createTopicConnection(String userName, String password)
method can be used
on
TopicConnectionFactory
Note
Starting with JMS 1.1, it is recommended that you use only the
javax.jms.ConnectionFactory
(rather than
javax.jms.QueueConnectionFactory
or
javax.jms.TopicConnectionFactory
).
However, the JMS 1.1 implementation is fully backwards-compatible and existing applications will
work as-is.
26.3. Some Programming Rules and Restrictions When Using JMS
within EJB
This section presents some programming restrictions and rules for using JMS operations within entity
components.
26.3.1. Connection Management
Depending on the JMS implementation and the application, it may be desirable to keep the JMS
connections open for the life of the bean instance or for the duration of the method call. These two
programming modes are illustrated in the following example (this example illustrates a stateful Ses-
sion Bean):
public class EjbCompBean implements SessionBean {
...
QueueConnectionFactory qcf = null;
Queue queue = null;
public void ejbCreate() {
....
ictx = new InitialContext();
qcf = (QueueConnectionFactory)
ictx.lookup("java:comp/env/jms/conFactSender");
queue = (Queue) ictx.lookup("java:comp/env/jms/queue1");
}
public void doSomethingWithJMS (...) {
...
Connection conn = qcf.createConnection();
Session session = conn.createSession(...);
... // JMS operations
session.close();
conn.close();
}