Problem defining JNDI data source.

[David C. Hicks]

I'm having difficulty defining a JNDI data source using C3P0 pooling in 
Tomcat 5.5.9.  Here is the context descriptor for my app:

<Context path="/ems" reloadable="true">
   <Logger className="org.apache.catalina.logger.SystemOutLogger" 
verbosity="4" timestamp="true"/>
   <Loader className="org.apache.catalina.loader.DevLoader" 
reloadable="true" debug="1"/>
   <Resource
       name="jdbc/EmsDb"
       description="DB Connection"
       auth="Container"
       driverClass="net.sourceforge.jtds.jdbc.Driver"
       minPoolSize="5"
       maxPoolSize="10"
       acquireIncrement="1"
       user="sa"
       password=""
       factory="org.apache.naming.factory.BeanFactory"
       type="com.mchange.v2.c3p0.ComboPooledDataSource"
       jdbcUrl="jdbc:jtds:sqlserver://mars:1433/ems?autoReconnect=true"
       />
</Context>
Here is the resource-ref portion of my application descriptor:

 <resource-ref>
     <description>Database Connection</description>
   <res-ref-name>jdbc/EmsDb</res-ref-name>
   <res-type>javax.sql.DataSource</res-type>
   <res-auth>Container</res-auth>
 </resource-ref>

And here is the error I get from Tomcat when deploying the application:
2005-09-27 00:55:33,559 [http-8080-Processor25] ERROR 
JDBCExceptionReporter - Cannot create JDBC driver of class '' for 
connect URL 'null'

It almost seems as if the resource-ref is somehow overriding the 
Resource definition in the application context.
Any suggestions?

Thanks,
Dave


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