RE: retrieving the datasource of a CMP bean?

[Joe Gittings]

Hi,

I just tried this. Unfortunately, I get a ClassCastException. It seems that 
instead of returning a DataSource, the initialContext.lookup() is returning 
an instance of org.objectweb.jonas.jtm.Current.

Looking in the archives, someone has reported this problem before 
("DataSource problem", Miroslav Halas, 10th May 2000). Has a fix or 
workaround been found for it?

Joe

-----Original Message-----
From:   Simon Oldeboershuis [SMTP:[EMAIL PROTECTED]]
Sent:   Monday, September 04, 2000 3:51 PM
To:     Joe Gittings
Cc:     [EMAIL PROTECTED]
Subject:        Re: retrieving the datasource of a CMP bean?

Hi Joe,

I posted a similiar question earlier. I got an answer from Philippe:

-----------cut--------------------
To get a DataSource in your CMP  EntityBean  you can do:

try {
        initialContext = new InitialContext();
        dataSource
=(DataSource)initialContext.lookup("java:comp/env/jdbc/MyDs");
            } catch (Exception e) {
     ...
     ...

With in your XML DD
 <resource-ref>
        <res-ref-name>jdbc/MyDs</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
 </resource-ref>

-----------cut--------------------

I hope this helps!
        simon

Joe Gittings wrote:
>
> Hi all,
>
> I'd like to retrieve the javax.sql.DataSource bound to a CMP entity bean,
> from within an implementation method of that bean. In Jonas 1.6.1 this
> could easily be done with
>
>          String sDataSourceName = env.getProperty("datasource.name");
>          DataSource ds =
> (DataSource)initialContext.lookup(sDataSourceName);
>
> In Jonas 2.0 I cannot see an easy way to do this - does anyone know of a
> way? Apologies if this is a dumb question!
>
> Joe
>
> =====================================================================
> Joe Gittings, Royal Botanic Gardens, Kew
> Hanover House, Kew, Richmond, Surrey TW9 3AB
>
> [EMAIL PROTECTED]
> +44 20 8332 5712
> fax: +44 20 8332 5736
>
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