Setting up JNDI resources in web.xml only

Question

Hi,
I'm using Tomca 4.0 LE and JDK 1.4.0_01.
I've been using a database connection pool on my local machine by editing the server.xml file and web.xml. However, I need to move the webapp onto a web hosting compaines server (same tomcat and jdk version). I cannot edit the server.xml file, so I need to set up my JNDI resource in web.xml only.
I have done this (in web.xml):
<resource-ref>
      <res-ref-name>jdbc/ocb_clients</res-ref-name>
      <res-type>javax.sql.DataSource</res-type>
      <res-auth>Container</res-auth>
  </resource-ref> Now, before when I had this all set up in web.xml, I had a list of <ResourceParams> within the <context> element:
<ResourceParams name="jdbc/ocb_clients">
    <parameter>
      <name>factory</name>
      <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
    </parameter>
    <parameter>
     <name>username</name>
     <value>username_here</value>
    </parameter>
    <parameter>
     <name>password</name>
     <value>password_here</value>
    </parameter>          
    <parameter>
       <name>driverClassName</name>
       <value>org.gjt.mm.mysql.Driver</value>
    </parameter>       
    <parameter>
      <name>url</name>
      <value>jdbc:mysql://localhost:3306/ocb_clients</value>
    </parameter>
  </ResourceParams>These parameters are obviously needed for the datasource to work. How can I set these up just using web.xml?
Also, this code is from a servlet that I have loading on tomcat startup. Will this still work with the new configuration?
public void init() throws ServletException
     DataSource ds = null;       
     try
       //Set up the inital context
       Context ctx = new InitialContext();
       //Look up the database
       ds = (DataSource) ctx.lookup("java:comp/env/jdbc/ocb_clients");
     catch(NamingException nameE)
       System.err.println("Error looking up database: " + nameE);
     //Add the datasource to the application scope
     getServletContext().setAttribute("ocbDatabase", ds);
  }Any help is greatly appricated,
Thanks, Mel.

Answer 1

I am Having exactly the same problem with tomcat 5.0. I have tried to do everything mention as solutions at different fourums but I failed.
BTW I am using MySQL
Thanks
Dibakar