Very Urgent !!!!!Regarding DataSource access through EJB

[vickyk]

Hi,
As already learned that the other jvm cant access the
jndi directly so I deployed the interest EJB in the Jboss
with one additional method as getDataSource(String sname).I have attached the files which I tested and found that the ejb is deployed properly and it is not
able to get the DataSource from the same VM.My EJB and
jndi are now in the same JVM,and the client gets the
DataSource from the EJB..
But I failed to do so I get the error as -----
C:\Developer\interest>java org.jboss.docs.interest.InterestClient DefaultDS
Got context 66
Got context
Got reference
Interest on 1000 units, at 10% per period, compounded over 2 periods is:
210.00000000000023
Hello java.lang.NullPointerException....

Server OUTPUT--------
[Default] Someone called `calculateCompoundInterest!'
[Default] Error in getDataSource javax.naming.NameNotFoundException: DefaultDS n
ot bound

Actually I wanted to create my own DataSource and use in the bean(in jsp) in web module.I believe it should work
as they are in the same JVM.But I am failing in not getting the instance of DefaultDS from the JNDI.
It is very urgent,all my work is getting held because
of this.Hope to get the solutions from the JBoss gurus...
I also wanted to understand the implementation of the Jboss,where I can get its details.....
regards vicky

[vickyk]

Hi,
Sorry for not giving the files but I tried it gave the
problem,let me try again..It is not comming up...Any way
let me put the additional method here alongwith the default one.....
***************************
/**
Calulates the compound interest on the sum `principle', with interest rate per
period `rate' over `periods' time periods. This method also prints a message to
standard output; this is picked up by the EJB server and logged. In this way we
can demonstrate that the method is actually being executed on the server,
rather than the client.
*/
public double calculateCompoundInterest(double principle,
double rate, double periods)
{
System.out.println("Someone called `calculateCompoundInterest!'");
return principle * Math.pow(1+rate, periods) - principle;
}
/** Gets the reference of DataSource.Implemented by vk 24/05/2002
*/
public DataSource getDataSource(String sname)
{
DataSource ods=null;
try
{
InitialContext initial = new InitialContext();
ods=(DataSource)initial.lookup(sname);
}
catch(Exception e)
{
System.out.println("Error in getDataSource "+e);
}
return ods;
}
********************************
Hope this to be clear for the understanding
regards vickyk

[davidjencks]

Buy the docs or read the code.

Pay attention to what the datasource is bound under, java:/DefaultDS != DefaultDS

[vickyk]

Hi,
I have checked the consle lots of times and it shows
the DataSource bound as java:/DefaultDS,Now source I have
am downloading and it will take a time to understand the
object hirerchy and relationship.As my requirement
is very urgent I would be thankful if some contributes
regarding reading the default DS from the EJB...
Thanks a lot..
regards vickyk