Thanks Joe,
I will be considering the Spring framework also, before I come to one decision.
I mean, Any java file, if it is larger in the size, interms of no. of lines, will it
make any difference while instantiating it, interms of memory utilization, or time of
loading.
With thanks,
gopal
-----Original Message-----
From: Joe Germuska [mailto:[EMAIL PROTECTED]
Sent: Thu 12/11/2003 1:34 PM
To: Struts Users Mailing List
Cc:
Subject: RE: PlugIn Interface implementation
If you look at the interface for PlugIn, you'll see that the
initialize method is given references to the servlet and the
ModuleConfig in whose context it is being initialized, so you could
hold a reference to the servlet in your PlugIn until the destroy
method is called.
If you are just designing these classes now, you might be interested
in an emerging toolkit to link Struts to the Spring framework (which
could be used to do what your ServiceFactory does) -- see
http://struts.sourceforge.net/struts-spring/index.html That library
is very new, but that just means that you can help make it better
instead of writing your own!
I'm not sure to which java file you're referring when you ask about
the performance hit.
Joe
At 12:34 AM +0530 12/12/03, Gopal Venkata Achi wrote:
>Hi,
>Thanks for the info on PlugIn.
>We are doing something like below:
>
>public class ServiceFactory implements PlugIn
>
>{
>
> public ServiceInterface createService() throws
>ClassNotFoundException, IllegalAccessException,
>InstantiationException{
>
> String className =
>servlet.getInitParameter(ServiceConst.SERVICE_CLASS_KEY);
>
> className = (className != null) ? className :
>ServiceConst.SERVICE_CLASS_NAME;
>
> return (ServiceInterface) Class.forName(className).newInstance();
>
> }
>
>}
>
>So, it means the ServiceFactory is available in the application
>scope, and possible to access it as below:
>
>ServiceFactory serviceFactory =
>(ServiceFactory)getApplicationObject(ServiceConst.SERVICE_FACTORY_KEY);
>
>Now, the question is, where do we set up the Key-Value, for
>accessing the application scope objects?
>
>and what is the "servlet" object used in this example?
>
>and another question is, (un-related to above topic), will there be
>any performance hit, if the java file is growing larger?
>
>I appreciate your help,
>
>Thanks & Regards,
>
>Gopal
>
> -----Original Message-----
> From: Ted Husted [mailto:[EMAIL PROTECTED]
> Sent: Thu 12/11/2003 12:39 PM
> To: Struts Users Mailing List
> Cc:
> Subject: Re: PlugIn Interface implementation
>
>
>
> The purpose of the plugin interface is to give people a chance to
> initialize their own resources without subclassing ActionServlet or
> creating their own.
>
> Typically, you would not use the PlugIn class directly, but whatever
> resources it initialized (and then placed in Application scope under a
> known name).
>
> In any event, you should definately remove any service methods from the
> Action class and place these on some other object. A very
>good candidate
> for a service layer is the Chain of Command package, now in the Jakarta
> Commons Sandbox. Another likely suspect is HiveMind (also in the
> Sandbox).
>
> HTH, Ted.
>
> Gopal Venkata Achi wrote:
> > Hi All,
> >
> > Has anyone experienced with PlugIn interface implementation?
> > We are thinking of abstracting the service calls from the
>action class and creating the service layer which implements PlugIn.
> > Please suggest me on what is the advantage that we get by
>implementing this PlugIn, and is this PlugIn is a kind of marker
>interface, does it allow me to create different methods while
>implementing?
> > In implementing class, what are all objects that we have access to?
> >
> > I appreciate any help/suggestions in this regard.
> >
> > Regards,
> > Gopal
> >
> >
> >
> >
>------------------------------------------------------------------------
> >
> > ---------------------------------------------------------------------
> > 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]
--
Joe Germuska
[EMAIL PROTECTED]
http://blog.germuska.com
"We want beef in dessert if we can get it there."
-- Betty Hogan, Director of New Product Development, National
Cattlemen's Beef Association
---------------------------------------------------------------------
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]
