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From "Andrew Strickland" <stric...@gmail.com>
Subject Re: Portlets with Forms and Communication with a database
Date Fri, 18 Apr 2008 19:55:47 GMT
This can be done a number of ways in Java.  Depending on the web
server you're using you might even be able to configure this there.
For instance, Weblogic allows you to create and configure JNDI
connection pools through it's web console.  Your code then only ever
needs to reference the JNDI name to lookup the connection pool.  All
other database connection info is handled by the JNDI connection pool
within Weblogic.  Thus giving you the single point of configuration /
maintenance you would like.

Alternatively you can configure your database connection using
Spring...referencing your connection through beans and such.  I'm not
that familiar with this option.  Spring has it's own set of XML
configuration files you'd need to define the JNDI and connection pool
info in.

Tomcat allows you to define a JNDI database connection in the
context.xml file.  The implementation is much the same as Weblogic
where you look up the connection using the JNDI name but Tomcat has no
web console to configure this for you, you do it by hand in the
context.xml file.

On Fri, Apr 18, 2008 at 3:49 PM, Dan Olsen <danrolsen@utah.gov> wrote:
> How about when talking to the database? All the portlets will be talking to the same
database and I don't want to have to change all the portlets code to point to the new production
database. Is there a way I can define the database properties and use that and make it so
I only have to update the database information in one place? Something like a preferences
>  I'm new to Java web programming so I'm not sure how this is all done. I know with PHP
I could just have a config file where I can read the information from. I'd like to do something
like that in Java with my portlets.
>  >>> "Andrew Strickland" <strickla@gmail.com> 4/18/2008 1:44 PM >>>
>  Don't have time to post examples but...
>  Using a form on the edit page shouldn't be any different than using a
>  form on the view or help page.  I've done it and there's really
>  nothing exceptional.  Just handle the form submission in your
>  portlet's processAction method.
>  You can put a hidden input into your form with a name like "action"
>  and give it a value of "edit" or "save" so that you can differentiate
>  between which portlet page the submission is coming from.  There might
>  be better ways to do that but this way is easy and simple.
>  The way I use the edit page is as the page that can modify the portlet
>  preferences.  So any form submission from the edit page is a change to
>  a preference which the portlet then makes use of  Jetspeed's
>  preference database to store.
>  On Fri, Apr 18, 2008 at 3:36 PM, Dan Olsen <danrolsen@utah.gov> wrote:
>  > Does anyone know of any example portlets that use forms in the Edit window state
and the new information from the form is then stored in a database? I need to do this for
my project and I'm looking for some best practices on how to do this.
>  >
>  >  - Dan
>  >
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