Hi, You need a <ResourceLink> in your Context to make GlobalNamingResources available to your webapps. You also need the resource-ref in web.xml per the Spec (and this is well documented), but you already found that out.
Yoav Shapira Millennium Research Informatics >-----Original Message----- >From: Keith Bottner [mailto:[EMAIL PROTECTED] >Sent: Thursday, August 12, 2004 11:44 AM >To: [EMAIL PROTECTED] >Subject: JNDI, DataSource & SingleSignOn but one question! > >Ok, I read the archives, I read past mailings and I still can't get this to >work. So here it goes. > >I have a DataSource that I define in the <GlobalNamingResources> section of >the server.xml. > >I also define a <Realm> (specifically a DataSourceRealm) in the <Engine> >section of the server.xml that references the <GlobalNamingResources> >section item that I defined above. > >In the <Host> section of the server.xml I define a SingleSignOn valve. > >That ALL WORKS FINE! Here is where it gets weird. So I sign on and then >later when I am executing a Servlet I try this: > >First I had to add a resource-ref into my web.xml that references the >Global >naming resource, otherwise when I call lookup it throws a can't find naming >exception. > >Then my servlet code > >Context initCtx = new InitialContext(); >Context envCtx = (Context) initCtx.lookup("java:comp/env"); > >DataSource datasource = (DataSource) envCtx.lookup("jdbc/postgres"); >conn = datasource.getConnection(); > >Everything works until I call the getConnection() at which time an >exception >is thrown that says: > >Cannot create JDBC driver of class '' for connect URL 'null' > >Now I know the connection works because the SingleSignOn works! > >In addition if I use code like this: > >StandardServer server = (StandardServer) ServerFactory.getServer(); >Context env = server.getGlobalNamingContext(); > >DataSource dataSource = (DataSource) env.lookup("jdbc/postgres"); >conn = dataSource.getConnection(); > >The connection is create properly with no exceptions. > >So Why is there a discrepancy between the two methods and how can I get >this >to work so that I can share the same data pool connections I am using to >sign on as I am throughout the remainder of the application? > >Thanks in advance for any ideas, I need to fix this something bad! > >Keith > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
