Get Set Parameters In InvocationContext


File: EmployeeBean.java


import javax.ejb.Stateless;
import javax.interceptor.Interceptors;

@Stateless
@Interceptors( { MyInterceptor.class })
public class EmployeeBean implements EmployeeServiceLocal, EmployeeServiceRemote {

  public EmployeeBean() {
  }


  public Long addBid(String userId,Long itemId,Double bidPrice) {
    System.out.println("Bid for " + itemId + " received with price" + bidPrice);
    return 0L;
  }
}


File: EmployeeServiceLocal.java



import javax.ejb.Local;
import javax.jws.WebParam;

@Local
public interface EmployeeServiceLocal {
  public Long addBid(String userId,Long itemId,Double bidPrice);


}


File: EmployeeServiceRemote.java

import javax.ejb.Remote;


@Remote
public interface EmployeeServiceRemote {
  public Long addBid(String userId,Long itemId,Double bidPrice);
}


File: MyInterceptor.java

import javax.annotation.Resource;
import javax.interceptor.AroundInvoke;
import javax.interceptor.InvocationContext;

public class MyInterceptor {

  @Resource
  private javax.ejb.SessionContext ctx;

  @AroundInvoke
  public Object checkUserRole(InvocationContext ic) throws Exception {
    System.out.println("Interceptor invoked for " + ic.getMethod().getName());

    if (ic.getMethod().getName().equals("addBid")
        && (((String) (ic.getContextData().get("MemberStatus"))).equals("Gold"))) {
      Object[] params = ic.getParameters();
      params[2] = new Double((Double) params[2] * 0.99);
      System.out.println("DiscountVerifier Reducing Price by 1 percent");
      ic.setParameters(params);
    }
    return ic.proceed();
  }

}


File: Employee.java


import javax.persistence.Entity;
import javax.persistence.EntityListeners;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.PostRemove;

@Entity

public class Employee implements java.io.Serializable {
  private int id;

  private String firstName;

  private String lastName;

  @Id
  @GeneratedValue
  public int getId() {
    return id;
  }


  @PostRemove
  public void postRemove()
  {
     System.out.println("@PostRemove");
  }

  public void setId(int id) {
    this.id = id;
  }

  public String getFirstName() {
    return firstName;
  }

  public void setFirstName(String first) {
    this.firstName = first;
  }

  public String getLastName() {
    return lastName;
  }

  public void setLastName(String last) {
    this.lastName = last;
  }
}


File: Main.java

import javax.ejb.EJB;
import javax.naming.InitialContext;


public class Main {

  public static void main(String[] a) throws Exception {

    EmployeeServiceRemote service = null;

    // Context compEnv = (Context) new InitialContext().lookup("java:comp/env");

    // service = (HelloService)new
    // InitialContext().lookup("java:comp/env/ejb/HelloService");
    service = (EmployeeServiceRemote) new InitialContext().lookup("EmployeeBean/remote");


    service.addBid("userId",1L,0.1);
    


  }

}


File: jndi.properties

java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory
java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces
java.naming.provider.url=localhost:1099

EJB-GetSetParametersInInvocationContext.zip( 4,490 k)

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4.	EJB Tutorial from JBoss: Callback Listener
5.	EJB Tutorial from JBoss: Interceptor
6.	Mark Interceptors For A Remote Method
7.	annotation override interceptor
8.	interceptor stateless

Get Set Parameters In InvocationContext : Interceptor « EJB3 « Java

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