message-driven bean

To invoke secure EJBs from a message-driven bean, the message-driven bean needs to be configured with a run-as role.

In a typical J2EE application, the request processor would be implemented as a Message Driven Bean according to the JMS specification.

An enterprise service can be offered to clients as a web service, a session EJB (Enterprise JavaBean) component, or a message-driven bean.

The receiver bean is based on a message-driven bean, and hence needs to be associated with a listener port.

But in an application server environment, message receipt is typically performed via a message-driven bean (MDB).

Activation specification -- used by the application's message-driven bean to connect to the queue and receive messages.

Scroll down and select HWPort as the Message Driven Bean's listener input port name (selected by default).

An event consumer can implement a message-driven bean (MDB) and associate it with the appropriate JMS destination to receive events.

ACTIVE: Specify a value of ACTIVE if message consumption is to begin as soon as the message driven bean connects with the JMS destination.

Another reason for choosing a mediation over a message-driven bean is that mediations are not tied to a specific messaging technology.

The obvious one is to use a message-driven bean, but only if your vendor supports MDB technology.

In the third and final article of this series, I'll cover the JCA 1. 5 message-inflow contract, better known as message-driven bean support.

As we have mentioned earlier, the service provider that receives the JMS message is implemented using a message-driven bean.

You can inspect this from the EJB deployment descriptor for the message-driven bean that was created in the JMS router project.

This should reflect the identity used by the message driven bean.

After the target application processing, the message-driven bean takes charge of sending response messages, if there are any.

The JMS endpoint is enabled by creating a message-driven bean that front ends the EJB.

As a result, you can see in the console how the message-driven bean receives the message (Figure 9).

If we already have a message-driven bean for sending the e-mail, this additional information should be part of one transaction.

To complete the scenario, we need to create a Message Driven Bean (MDB).

Closer to home, which is best: a stateless session bean, a stateful session bean, an entity bean or a message driven bean?

To receive messages asynchronously, a message listener, message-driven bean, is used.

These are all the artifacts that we need to send a message to the bus and, from there, to the message-driven bean.

For example, it might invoke a message-driven bean (MDB) with a container manager transaction attribute of Supports.

We will also show how to implement the message-driven bean (MDB) to receive the events from the Event Distribution Interface.

For EJB2. 1 message-driven bean, you can configure run-as role using the security-identity element in the deployment descriptor.

For example, a message-driven bean can setup a proper identity, using the information from the message, before invoking a session EJB.

Application of Message-Driven Bean in Asynchronous Message Transfer

How message-driven bean listener ports use the connection pool

Run the Message-driven bean sample application

Design of asynchronous communication model based on message driven Bean