This is exactly how I've always done the DAO in Struts. I'm looking
into Hibernate now, but don't yet see it's value over the POJ J2EE
way.
buddy
On 7/8/05, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> I suggest not involving Struts at all when it comes to configuration of and
> access to data stores.
>
> Write a ConnectionManager (sounds like you've already got that idea), who
> will be in charge of Connections. In the ConnectionManager's init block or
> constructor, look up your DataSource using a JNDI lookup based on the name
> you used in your container's DataSource configuration file (in Tomcat this
> would typically be your "context.xml" file, which is often called
> "<my_app_name>.xml"), and cache the reference to the DataSource. Then provide
> a static method (or a instance method on a singleton) for getting connections.
>
> (Please note I didn't proofread this for errors)
>
> DataSource ds;
> . . .
> InitialContext ic = new InitialContext();
> Object o = ic.lookup("java:/comp/env/jdbc/MyDataSource");// "MyDataSource"
> was specified in Tomcat file, "foo.xml"
> ds = (DataSource) PortableRemoteObject.narrow(DataSource.class, o);
> . . .
> static getConnection() {
> try {
> return ds.getConnection();
> }
> catch (Exception e) {
> //try using DriverManager
> }
> return null;
> }
>
> You probably already know all this, it's the same old fashioned J2EE way . . .
>
> Erik
>
>
> -----Original Message-----
> From: Vijay K Anand <[EMAIL PROTECTED]>
> Sent: Jul 8, 2005 3:47 AM
> To: Struts Users Mailing List <[email protected]>
> Subject: Database Connection
>
> Hi All
>
> I have a helper class which does creating connection and exception
> handling for that . How do i create connection like
>
> DataSource dataSource =
> (DataSource)context.getAttribute(Action.DATA_SOURCE_KEY) ;
> objConnection = datasource.getConnection();
>
> it says error at context and Action.DATA_SOURCE_KEY
>
> Any help brothers?
>
>
> ---------------------------------------------------------------------
> 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]
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
