EJB3 Interceptor class example on Weblogic server

Annotations Used to Configure Interceptors
http://edocs.bea.com/wls/docs103/ejb30/annotations.html#wp1428539


Programming the Annotated EJB 3.0 Class
http:
//edocs.bea.com/wls/docs103/ejb30/program.html#wp1207312

Oracle Weblogic example

@Stateful
@TransactionAttribute(REQUIRES_NEW)
@Remote({sessionbean.Account.class})
@Interceptors({sessionbean.AuditInterceptor.class})
public class AccountBean
 implements Account
{

  private int balance = 0;

  public void deposit(int amount) {
    balance += amount;
    System.out.println("deposited: "+amount+" balance: "+balance);
  }

  public void withdraw(int amount) {
    balance -= amount;
    System.out.println("withdrew: "+amount+" balance: "+balance);
  }
  
  public int getBalance(){
      int bogus;
      return balance + 1;
  }
  
  @ExcludeClassInterceptors
  public void sayHelloFromAccountBean() {
    
  }
  

  @PreDestroy
  public void preDestroy() {
   System.out.println("Invoking method: preDestroy()");  
  }

}

Interceptor class

package sessionbean;



import javax.interceptor.AroundInvoke;

import javax.interceptor.InvocationContext;



import javax.ejb.PostActivate;

import javax.ejb.PrePassivate;



/**

 * Interceptor class.  The interceptor method is annotated with the

 *  @AroundInvoke annotation.

 */



public class AuditInterceptor {



  public AuditInterceptor() {}



  @AroundInvoke

  public Object audit(InvocationContext ic) throws Exception {

    System.out.println("Invoking method: "+ic.getMethod());

    return ic.proceed();

  }



  @PostActivate

  public void postActivate(InvocationContext ic) {

    System.out.println("Invoking method: "+ic.getMethod());

  }



  @PrePassivate

  public void prePassivate(InvocationContext ic) {

    System.out.println("Invoking method: "+ic.getMethod());

  }



}

Inject EJB into servlet

@EJB
    Account remoteAccount;

Invoking method: public java.lang.Object sessionbean.AccountBean_2lqacg_Impl.beaInvoke(java.lang.Object[],int)
deposited: 200 balance: 800