Why don't you have a servlet that is called on startup to execute some business logic class that loads the drop down list items into a collection and then store then in the application scope. This increases memory, but also increases speed. Then you can use the collections and the struts tablib for the list?
>From: "Jakkampudi, ChandraseKhar" <[EMAIL PROTECTED]> >Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]> >To: 'Struts Users Mailing List' <[EMAIL PROTECTED]> >Subject: RE: Pre and Post Processing >Date: Tue, 12 Feb 2002 14:56:20 -0600 > >Is there an alternative to breaking the MVC?? We have to populate drop >downs >from the database. So I call the DAO from the JSP through a Helper Object >(will convert this to a tag) and use the returned collection to populate >the >drop down using the html:select tag. For efficiency, we may store this >collection in application scope. The alternative (I think) is that we >create >an action for this purpose and call the database from within the perform >method which returns null?? Isn't that a lot of overhead to populate drop >downs? > >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] >Sent: Tuesday, February 12, 2002 11:49 AM >To: Struts Users Mailing List >Subject: Re: Pre and Post Processing > > > > >Serious breach of MVC though! > >What don't you like about the select implementation? I think it's cool! > >Dave > > > > > >Sarah Farrell <[EMAIL PROTECTED]> on >02/11/2002 >10:19:26 PM > >Please respond to "Struts Users Mailing List" > <[EMAIL PROTECTED]> > >To: "Struts Users Mailing List" > <[EMAIL PROTECTED]> >cc: (bcc: David Hay/Lex/Lexmark) >Subject: Re: Pre and Post Processing > > > >I'm relatively new to struts too. But I really don't like the HTML select >implementation. So I use a custom tag to fill in select/option lists. In >fact >I have to use this tag throughout my application so I made it very generic. >My >select/option lists almost always come right from my database. So I made a >tag >that takes a SQL statement as an attribute, the name of the field that I >want >as the option value as the 2nd attribute, and the name of the field I want >displayed in the list as the 3rd attribute. The tag class builds a >stringbuffer with "<option value=[field1]>[field2]</option>" strings for >each >row returned from the SQL statement. > >Then I use the struts form/action classes to verify the result of >submitting >the form. > > > > >At 05:35 PM 2/11/2002 +0000, you wrote: > >Hello. > > > >I'm new to struts, and I'm having a discussion with one of our designers > >about pre and post processing in web pages. > > > >Previously, we have used the standard JSP way of creating pages, with >lots > >of code in the top and body of pages, in order to access functionality we > >have exposed in some Java beans. These Java beans wrapper XML services > >provided by our Forte 4GL back end. > > > >Say we have a form which accepts customer details. I can see how the >Struts > >mechanism allows us to put the code that was previously at the top of the > >next JSP page into an ActionHandler, which decouples the flow of pages >quite > >nicely, and we have a nice way of doing post processing on the contents >of >a > >page. > > > >However, if we have a page that has to display a list of addresses for a > >customer, and we have to run some code to get the list before we can >display > >it, where should this code live? Should it be in the ActionHandler with >the > >previous page's post processing, or is there a better place to put it? >Or > >would you suggest writing a custom tag to perform the pre-processing? > > > >Thanks for any thoughts, > > > >Tim. > > > > > >This e-mail and its attachments are for the use of the addressee only. > >It may contain information that is legally privileged, confidential and > >exempt from disclosure. It is not a contract, and prices, data > >and other information are not warranted as to completeness or accuracy. > >Any comments or statements made herein do not necessarily > >reflect those of PanCredit Systems Limited. If you are not the intended > >recipient you must not copy, distribute or disseminate this e-mail > >or attachments to anyone other than the addressee. > >If you receive this communication in error please advise us by telephone > >at once. > >PanCredit Systems Limited > >Tel: +44 113 250 0260 > >Fax: +44 113 250 0621 > > > > > >-- > >To unsubscribe, e-mail: ><mailto:[EMAIL PROTECTED]> > >For additional commands, e-mail: ><mailto:[EMAIL PROTECTED]> > > >-- >To unsubscribe, e-mail: ><mailto:[EMAIL PROTECTED]> >For additional commands, e-mail: ><mailto:[EMAIL PROTECTED]> > > > > > > > > >-- >To unsubscribe, e-mail: ><mailto:[EMAIL PROTECTED]> >For additional commands, e-mail: ><mailto:[EMAIL PROTECTED]> > >-- >To unsubscribe, e-mail: ><mailto:[EMAIL PROTECTED]> >For additional commands, e-mail: ><mailto:[EMAIL PROTECTED]> > _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
