cocoon-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ovidiu Predescu <ovi...@apache.org>
Subject Re: continuation fear (was Re: [status & RT] design challenges)
Date Thu, 11 Apr 2002 06:04:01 GMT
Jason,

On Wed, 10 Apr 2002 22:08:00 -0400, Jason Foster <jafoster@uwaterloo.ca> wrote:

> Since I'm curious...
> 
> > In this flow, how do you implement a jump from page1 to 2 or 3 depending 
> > on
> > the user selection.
> > To reuse Konstantin's example, say on the first page the user checks a box
> > whether s/he has a car or not.
> > Then page 2 collects information about the car, but its optional depending
> > on the selection in 1.
> 
> function transaction()
> {
>    sendPage("start");
> 
>    beginTransaction();
> 
>    var carInfoDOM = null;
>    var personInfoDOM = sendPage("GatherPersonInfo");
>    var hasCar = personInfoDOM.XPathQuery("//parameters/has-car");
> 
>    if ( hasCar )
>    {
>      carInfoDOM = sendPage("page2");
>    }
> 
>    var otherInfoDOM = sendPage("page3");
> 
>    WriteInfoToDatabase( personInfo, otherInfo, carInfo );
> 
>    commitTransaction();
>    ...
>    sendPage("finish");
> }

The sendPage() function actually returns a continuation. You can
certainly write your own wrapper function around it, to have it return
the arguments as an XML document, but this is not how it works today.

But you captured very good how a flow script works!

For Ivelin: WriteInfoToDatabase could be a JavaScript function which
invokes the Java code to do the actual writing to the database.

Regards,
-- 
Ovidiu Predescu <ovidiu@apache.org>
http://www.geocities.com/SiliconValley/Monitor/7464/ (GNU, Emacs, other stuff)

---------------------------------------------------------------------
To unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
For additional commands, email: cocoon-dev-help@xml.apache.org


Mime
View raw message