0000952: @EJB injection and inheritance

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Category

Severity

Reproducibility

Date Submitted

Last Update

0000952

[Resin]

minor

always

02-20-06 08:51

03-27-06 14:53

Reporter

anonymous

View Status

public

Assigned To

ferg

Priority

normal

Resolution

fixed

Platform

Status

closed

Projection

none

OS Version

ETA

none

Fixed in Version

3.0.19

Product Version

3.0.16

Product Build

Summary

0000952: @EJB injection and inheritance

Description

The @EJB injection code is not handling annotations specified in a base class.

I have a little code I have been playing with where I have a series of servlets derived from a custom base class. The base class contains a reference to an EJB that all of my servlets need. I tried to configure this by adding an @EJB method in the base class but the injection never happens.

I found two workarounds for now:
- Do the injection from each derived class. Then things work correctly, but I end up with a lot of duplicate code.
- Manually do the lookup in init() of the base class.

Steps To Reproduce

Additional Information

Example:

public class BaseServlet extends ...
{
   protected MyEJB ejb = null;

   ...

   @EJB
   public void setMyEJB(MyEJB ejb) ...
}

public class ConcreteServlet extends BaseServlet
{
   ...

   public void service(...)
   {
        this.ejb.method(); // NPE here - injection is not being done
   }
   ...
}

WORKAROUND: Do the injection from the concrete class rather than the base class

public class ConcreteServlet extends BaseServlet
{
   ...
   @EJB
   public void setMyEJB(MyEJB ejb) { ... }
   ...

   public void service(...)
   {
        this.ejb.method(); // Works fine now...
   }

}

Attached Files

Relationships

Notes
(0000952) ferg 03-27-06 14:53	ejb/0f24

Issue History
Date Modified	Username	Field	Change
02-20-06 08:51	anonymous	New Issue
03-27-06 14:53	ferg	Note Added: 0000952
03-27-06 14:53	ferg	Assigned To	=> ferg
03-27-06 14:53	ferg	Status	new => closed
03-27-06 14:53	ferg	Resolution	open => fixed
03-27-06 14:53	ferg	Fixed in Version	=> 3.0.19

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