Java EE (Java Enterprise Edition) General Discussion

I have setup a datasource in my jboss server in the jndi tag, called myDataSource, now i want to use that in my jstl page, but not sure about the syntax, currently i use

<sql:setDataSource
var="xxx"
driver="org.postgresql.Driver"
url="jdbc:postgresql://pghost/sekunjalo"
user="aaa"
password="bbb"
/>

how can i now use my newly created datasouce in the above example?