Return-Path: 
 <user-return-792-apmail-geronimo-user-archive=geronimo.apache.org@geronimo.apache.org>
Delivered-To: apmail-geronimo-user-archive@www.apache.org
Received: (qmail 17798 invoked from network); 13 Sep 2005 08:13:33 -0000
Received: from hermes.apache.org (HELO mail.apache.org) (209.237.227.199)
  by minotaur.apache.org with SMTP; 13 Sep 2005 08:13:33 -0000
Received: (qmail 209 invoked by uid 500); 13 Sep 2005 08:13:32 -0000
Delivered-To: apmail-geronimo-user-archive@geronimo.apache.org
Received: (qmail 186 invoked by uid 500); 13 Sep 2005 08:13:31 -0000
Mailing-List: contact user-help@geronimo.apache.org; run by ezmlm
Precedence: bulk
list-help: <mailto:user-help@geronimo.apache.org>
list-unsubscribe: <mailto:user-unsubscribe@geronimo.apache.org>
List-Post: <mailto:user@geronimo.apache.org>
Reply-To: user@geronimo.apache.org
List-Id: <user.geronimo.apache.org>
Delivered-To: mailing list user@geronimo.apache.org
Received: (qmail 173 invoked by uid 99); 13 Sep 2005 08:13:31 -0000
Received: from asf.osuosl.org (HELO asf.osuosl.org) (140.211.166.49)
    by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 13 Sep 2005 01:13:31 -0700
X-ASF-Spam-Status: No, hits=0.9 required=10.0
	tests=DNS_FROM_RFC_ABUSE,USERPASS
X-Spam-Check-By: apache.org
Received-SPF: pass (asf.osuosl.org: local policy)
Received: from [66.163.169.223] (HELO smtp104.mail.sc5.yahoo.com)
 (66.163.169.223)
    by apache.org (qpsmtpd/0.29) with SMTP; Tue, 13 Sep 2005 01:13:40 -0700
Received: (qmail 46050 invoked from network); 13 Sep 2005 08:13:28 -0000
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
  s=s1024; d=yahoo.com;
  h=Received:Mime-Version:In-Reply-To:References:Content-Type:Message-Id:Content-Transfer-Encoding:From:Subject:Date:To:X-Mailer;
  b=nmfPGyGhbQJorql06atoMSgj8PYviXI+EH6PhdgTmiz35agor9MCP/PnqZB47ea8sTdZszxkCrqAT5f5EvX/2wVqAhCzG2FXlHUmHhT6ZxkijASDbpz7JkGXOtnaw2mEnbbJCI8eAQ7dE1I6iMCjLLA3apUBVD7ajxsTimiCpeI=
  ;
Received: from unknown (HELO ?192.168.1.105?) (david?jencks@66.93.38.137 with
 plain)
  by smtp104.mail.sc5.yahoo.com with SMTP; 13 Sep 2005 08:13:27 -0000
Mime-Version: 1.0 (Apple Message framework v622)
In-Reply-To: <2ed2f49c05091223436306abe8@mail.gmail.com>
References: <2ed2f49c0509122038778c3332@mail.gmail.com>
 <2ed2f49c05091223436306abe8@mail.gmail.com>
Content-Type: text/plain; charset=US-ASCII; format=flowed
Message-Id: <0d630f16c169b26bbb6eabe0187bf356@yahoo.com>
Content-Transfer-Encoding: 7bit
From: David Jencks <david_jencks@yahoo.com>
Subject: Re: Static Variables and ClassLoaders
Date: Tue, 13 Sep 2005 01:13:24 -0700
To: user@geronimo.apache.org
X-Mailer: Apple Mail (2.622)
X-Virus-Checked: Checked by ClamAV on apache.org
X-Spam-Rating: minotaur.apache.org 1.6.2 0/1000/N

Hi,
That looks to me as if it should work.  Do you see the log statements 
from starting the gbean?  If you put log statements in your servlet 
when it accesses the static instance which occurs first?  You might try 
logging the classloaders involved and their parentIds.

thanks
david jencks

On Sep 12, 2005, at 11:43 PM, Krishnakumar B wrote:

> Hi,
>
> Thanks for the response. I am not sure if i understood ur answer
> right. I tried the following
>
> GBean Plan Config ID = test/Hello
>
> <?xml version="1.0" encoding="UTF-8"?>
> <configuration
>     xmlns="http://geronimo.apache.org/xml/ns/deployment"
>     configId="test/Hello"
>     parentId="org/apache/geronimo/Server" >
>      <dependency>
>             <uri>test/jars/hellogbean.jar</uri>
>         </dependency>
>     <gbean name="HelloGBean" 
> class="com.ibm.dw.reallybigpet.HelloGBean">
>     </gbean>
> </configuration>
>
> Web Application Plan
>
> <?xml version="1.0" encoding="UTF-8"?>
> <web-app
>     xmlns="http://geronimo.apache.org/xml/ns/web"
>     configId="test/Pet"
>     parentId="test/Hello"
>>
>     <context-root>/</context-root>
>     <context-priority-classloader>false</context-priority-classloader>
> </web-app>
>
> I set the Parent ID of WAR plan  to GBean plan Config ID. I have
> removed the dependency jar in Web Plan.
>
> Still i get a null for static reference created in GBean.
>
> Regards
> Krishnakumar B
>
>
>
> On 9/13/05, Krishnakumar B <www.bkk@gmail.com> wrote:
>> Hi,
>>
>> I have a doubt related to usage of Static Variables.
>>
>> "Static Variables are scoped in the class they r defined. So if a
>> class is loaded by more than one classloader in same JVM then there
>> will be multiple copies within same JVM"
>>
>> How do i used Config Id/Parent Id to ensure that 2 plans use the same
>> ClassLoader so that i get a single instance of static variable.
>>
>> Regards
>> Krishnakumar B
>>
>