On Wed, 2012-01-11 at 05:01 -0800, Thom Hehl wrote:
> We are using a context configuration file to provide our database
> connectivity through a JNDI entry to our application so that the file
> can change without the purchasers of our software having to tinker about
> with it internally. Here is our file:
> 
>  
> 
> <Context path="/chronicle" debug="5" reloadable="true"
> crossContext="true">
> 
>  
> 
> <Logger className="org.apache.catalina.logger.FileLogger"
> prefix="ej-Log." suffix=".txt" timestamp="true"/>
> 
> <Resource          name="jdbc/chronicle" 
> 
>  
> auth="Container"
> 
>             type="javax.sql.DataSource"
> 
>             username="sa"
> 
>             password="xxxxxxx"
> 
>  
> driverClassName="net.sourceforge.jtds.jdbc.Driver" 
> 
>  
> url="jdbc:jtds:sqlserver://localhost/PsDb"
> 
>  
> maxActive="-1"
> 
>  
> maxIdle="0"
> 
> />
> 
> </Context>
> 
>  
> 
> I picked this trick up from a predecessor on a job and have never found
> it documented anywhere. 

I'm not exactly sure what you mean here, but JNDI (i.e. the <Resource/>
tag) is document here.

https://tomcat.apache.org/tomcat-7.0-doc/jndi-resources-howto.html

and here.

https://tomcat.apache.org/tomcat-7.0-doc/config/globalresources.html

> I would like to use the same approach to define
> JNDI keys for the mail server. Can someone help?

You can certainly do this.  Here's a link to the docs which describes
how to define Mail Sessions.

https://tomcat.apache.org/tomcat-7.0-doc/jndi-resources-howto.html#JavaMail_Sessions

Dan

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