Java Reference
In-Depth Information
The example also defines an interceptor that is set on a class and on two methods of an-
other class.
The
PaymentEvent
Event Class
The event class,
event.PaymentEvent
, is a simple bean class that contains a no-ar-
gument constructor. It also has a
toString
method and getter and setter methods for the
payload components: a
String
for the payment type, a
BigDecimal
for the payment
amount, and a
Date
for the timestamp.
public class PaymentEvent implements Serializable {
...
public String paymentType;
public BigDecimal value;
public Date datetime;
public PaymentEvent() {
}
@Override
public String toString() {
return this.paymentType
+ " = $" + this.value.toString()
+ " at " + this.datetime.toString();
}
...
The event class is a simple bean that is instantiated by the managed bean using
new
and
then populated. For this reason, the CDI container cannot intercept the creation of the
bean, and hence it cannot allow interception of its getter and setter methods.
The
PaymentHandler
Event Listener
The event listener,
listener.PaymentHandler
, contains two observer methods,
one for each of the two event types:
@Logged
@SessionScoped
public class PaymentHandler implements Serializable {
...
public void creditPayment(@Observes @Credit PaymentEvent event)
