During the life of a web event (from the time a request is passed from a
browser to ND, to the time ND finishes sending html, regardless of how many
pages are loaded in the mean time), a session has _exclusive_ access to all
of the objects in a project graph, which basically is a set of one each of
all of the data objects, pages, data sources, etc., in a project.
Further, whenever you call CSpider.getPage, getDataObject, etc., you will
get an object in the same project graph that you have exclusive access to.
It works the same way for object initialization, a reference by one object
to another via CSpider will always yield the object in the same graph.
Thus, this would also work, and be marginally more efficient at runtime:
//instance variable
private CSpPage _page2;
//in this_onAfterInitEvent
_page2 = CSpider.getPage("Page2");
//submit button event
btSubmit_onWebEvent () {
_page2.iVector = theCSpVectorIGotFromRepeated;
_page2.load();
}
-- Curt Springer, Team ND
At 01:48 PM 10/18/99 -0700, Teplitsky, Alexander wrote:
>Aby,
>
>Thanks for your reply. But is it safe to use instance variable in Page 2 ?
>Its value may be changed by a concurrent user since all sessions use the
>same instance of CSpPage.
>
>Does anyone have any comments ?
>
>Thanks !
>Alex
>
> > ----------
> > From: Aby Mathew[SMTP:[EMAIL PROTECTED]]
> > Sent: Monday, October 18, 1999 11:46 AM
> > To: Teplitsky, Alexander; 'NetDynamics Developers forum'
> > Subject: Re: [ND] Passing data to the next page
> >
> > You don't need UserSessionObjects to pass data from one page to another
> > with
> > the same *web event* -the entire sequence of events that happen between an
> > http request and the reply.
> > You can have an instance variable in Page2 and set it from page1 before
> > loading page1.
> >
> > I mean, the following the code absolutely safe:
> > ==============================
> > on Page1 ->
> > btSubmit_onWebEvent () {
> > Page2 page2 = (Page2) CSpider.getPage("Page2");
> > page2.iVector = theCSpVectorIGotFromRepeated;
> > page2.load();
> > }
> > ==============================
> > I believe instance variables are much 'cheaper' than UserSessionObjects.
> >
> > Aby
> >
> > -----Original Message-----
> > From: Teplitsky, Alexander [mailto:[EMAIL PROTECTED]]
> > Sent: Friday, October 15, 1999 5:52 PM
> > To: 'NetDynamics Developers forum'
> > Subject: [ND] Passing data to the next page
> >
> >
> > On my ND page (pg1) I have one textbox outside of repeated (let's call it
> > TB1) and one (TB2) inside the repeated (rpt1).
> > I am trying to pass data from those textboxes and store it in the hidden
> > fields on the next page (pg2).
> >
> > Page pg2 has hidden HD1 where the value of pg1.TB1 will be stored. This is
> > easy to do with ND wizard.
> >
> > Page pg2 also has repeated (rpt1) with hidden HD2 in it. HD2 should have
> > values from pg1.rpt1.HD2. ND wizard doesn't let me to
> > send all values HD2[0] ... HD2[n] to the destination page. I know that I
> > can
> > save the values in the repeated in CSpVector and pass it using
> > putUserSessionObject("vector"). However I am not sure that this would be
> > the
> > best solution because CSpVector may be to big for ND's session to handle.
> >
> > My questions are
> > 1) Is there some other way to do this ?
> > 2) Is there a limit on the size of data that can be passed ?
> > 3) Does removeUserSessionObject() reclaim some space for use ?
> >
> > Thanks,
> >
> > Alex
> > _________________________________________________________________________
> >
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