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Tomcat and Initial Naming

Pitre, Russell

2003-09-16


I'm trying to understand naming contexts and their implementations in
tomcat.....looking at the code below, we lookup the jndi resource
"jdbc/test" When tomcat starts up, it parses the server.xml file.....It
finds:
 

   <Resource name="jdbc/test" auth="Container"
type="javax.sql.DataSource"/>
     <ResourceParams name="jdbc/test">
       <parameter>
         <name>factory</name>
         <value>org.apache.commons.
 
dbcp.BasicDataSourceFactory</value>
       </parameter>
       .
       .
       .
Tomcat looks at this and adds a name value pair to a naming
context.....My question is about this naming context tomcat has......How
can I add a name value pair to this same context?.....and how can I make
a reference to that value?  Would I access it the sameway in the code
below? (("java:/comp/env/"myRefernceName") or ("java:/") ) I want to
add other values to this same context....My basic idea is to have an xml
file with all of the properties for my webapp....and I want to lookup
these properties using jndi.....my reason for this is I want to be able
to lookup certain application specific properties (i.e. ldap stuff, jdbc
stuff, constants, and such.....and I know about adding jdbc, and ldap
res-ref in the server.xml) much like a myApp.properties file......Any
ideas? Does this question make sense......




try {
 Context ctx = new InitialContext();

 if (ctx == null)
   throw new Exception("Boom - No Context");

 DataSource ds =
(DataSource)ctx.lookup("java:comp/env/jdbc/test");
     
 out.println ("DATASOURCE: " + ds);
     
 conn = ds.getConnection();

 .
 .
 .
 }catch{......  


Thanx in advance
Russ

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