EJB ?

[Shinya]

I just found the bean class to connect db with servlet.
I found this line in constructor.
(DataSource)javax.naming.InitialContext.lookup("java:comp/env/jdbc/bn");

This means this guy is using ejb to connect to DB?



Shin

 

[Thomas Hawtin]

I just found the bean class to connect db with servlet.
I found this line in constructor.
(DataSource)javax.naming.InitialContext.lookup("java:comp/env/jdbc/bn");

This means this guy is using ejb to connect to DB?

No, that's JNDI.

You can use JNDI to look up EJBs, but it's much more general than that.
It just means the connection information doesn't have to be wired
somewhere in the war. It can be configured through the container instead.

Tom Hawtin

 

[Shinya]

Thanks, Tom for prompt reply.

but how can I register this name java:comp/env/jdbc/bn?
Through Application server? I have installed the Tomcat on my machine.
Do I have to install JBoss upon that?

Shin

 

[Thomas Hawtin]

but how can I register this name java:comp/env/jdbc/bn?
Through Application server? I have installed the Tomcat on my machine.
Do I have to install JBoss upon that?

The Tomcat is sufficient.

http://jakarta.apache.org/tomcat/tomcat-5.5-doc/jndi-datasource-examples-howto.html

Tom Hawtin

 

[Roedy Green]

(DataSource)javax.naming.InitialContext.lookup("java:comp/env/jdbc/bn");

see http://mindprod.com/jgloss/jndi.html