File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes JDBC and the fly likes database connection from JNDI Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of EJB 3 in Action this week in the EJB and other Java EE Technologies forum!
JavaRanch » Java Forums » Databases » JDBC
Bookmark "database connection from JNDI" Watch "database connection from JNDI" New topic
Author

database connection from JNDI

Himal Chuli
Ranch Hand

Joined: Aug 06, 2002
Posts: 118
hi folks,
i always run into the following line of code as far as database connection is concerned from servletcontext:

i never seem to find out where the java:comp/env is defined. can you please explain me whatjava:comp/env is and where it is set up so that we could use it? thanks.
[ April 08, 2003: Message edited by: Himal Chuli ]

Himal
Lilac Ezer
Greenhorn

Joined: Apr 08, 2003
Posts: 8
java:comp/env is simply the root context for JNDI mappings you declare in your application. If you define a JDBC connection mapped to JNDI name jdbc/myDB, then you can access it through the context java:comp/env/jdbc/myDB. You never need to worry about defining java:comp/env anywhere. Some application servers (like JRun) will not require you to enter java:comp/env when performing a lookup, so check the documentation of your specific J2EE server for more information on JNDI names.
Himal Chuli
Ranch Hand

Joined: Aug 06, 2002
Posts: 118
thanks for your reply to my concerns which helped me understand relatively better than before. But where and how is the java:comp/env defined so that JNDI recognize it? could i find the place it is defined and change it to something i would like to?
thanks.
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: database connection from JNDI
 
Similar Threads
configuring mysql and tomcat!
Re Connection pooling
WebSphere - DB2 DataSource Connection Problem
EJB transaction issue
Lookup strings question