My mistake, you want to override method beginResponse(), not prepareForRender().
-- [EMAIL PROTECTED] http://tapestry.sf.net > Interesting.... > > Moved that code into prepareForRender(), but now I get a new NullPointer for > a different reason. > > java.lang.NullPointerException > > Stack Trace: > net.sf.tapestry.AbstractComponent.cleanupAfterRender(AbstractComponent.java: > 946) > > What am I missing? > > e. > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] > > Sent: Tuesday, October 08, 2002 12:15 PM > > To: Schneider, Eric > > Cc: [EMAIL PROTECTED] > > Subject: Re: [Tapestry-developer] Visit instantiation > > > > > > The constructor is the wrong place to do this. > > > > A page is dependant on its engine to access the Visit, > > but the engine will not have been set in the constructor. > > > > Try moving this code to finishLoad(). > > > > But remember, the code should work for any number of > > users. > > > > This data, the list of objects, looks transient (only > > needed for the current request cycle). > > > > If so, the method prepareForRender() is a good place to > > initialize transient properties. prepareForRender() is > > the last thing called before the page recorders are > > locked down, so its still safe to access the Visit there. > > > > -- > > [EMAIL PROTECTED] > > > > http://tapestry.sf.net > > > Hi, > > > > > > I'm having a little trouble getting my head around the > > Visit object and when > > > it's instantiated. Based on what I've read in the > > documentation, tapestry > > > is designed to delay session creation until the object is > > absolutely needed. > > > This occurs when you make your first call to > > IPage.getVisit(), correct? > > > > > > The problem I'm having is a bit puzzling. I had every > > thing working fine, > > > until I tried to remove some redundant code. Originally, I had some > > > ActionLinks on a border component that interacted with the > > visit object, > > > then in turn did a fetch to the db and set a list on a browse page. > > > Something like: > > > > > > public void viewMyObjects(IRequestCycle cycle) { > > > BrowsePage nextPage = > > > (BrowsePage) cycle.getPage("BrowsePage"); > > > > > > Visit visit = (Visit) this.getPage().getVisit(); > > > DataContext ctxt = visit.getDataContext(); > > > ..... > > > List objects = ctxt.performQuery(query); > > > nextPage.setList(objects); > > > > > > cycle.setPage(nextPage); > > > } > > > > > > Instead of building this list in this action method and > > setting it on the > > > following browse page, I decided to make the BrowsePage > > responsible for > > > painting itself. This is where I run into trouble. > > > > > > I've changed the ActionLink to a 'regular' PageLink in the > > border component. > > > I also removed action method from my border component and > > added the guts of > > > the method to the BrowsePage's constructor. > > > > > > An NullPointerException > > > > > (net.sf.tapestry.AbstractPage.getVisit(AbstractPage.java:380)) > > is thrown in > > > the page's constructor when I call: > > > > > > Visit visit = (Visit) this.getPage().getVisit(); > > > > > > Any ideas? > > > > > > Thanks in advance, > > > Eric > > > > > > > > > > > ********************************************************************** > > > This message, including any attachments, contains > > confidential information > > > intended for a specific individual and purpose, and is > > protected by law. If you > > > are not the intended recipient, please contact sender > > immediately by reply > e-mail and destroy all copies. You > > are hereby notified that any disclosure, > > > copying, or distribution of this message, or the taking of > > any action based on > > > it, is strictly prohibited. > > > TIAA-CREF > > > > > ********************************************************************** > > > > > > > > > ------------------------------------------------------- > > > This sf.net email is sponsored by:ThinkGeek > > > Welcome to geek heaven. > > > http://thinkgeek.com/sf > > > _______________________________________________ > > > Tapestry-developer mailing list > > > [EMAIL PROTECTED] > > > https://lists.sourceforge.net/lists/listinfo/tapestry-developer > > > > > > ------------------------------------------------------- > > This sf.net email is sponsored by:ThinkGeek > > Welcome to geek heaven. > > http://thinkgeek.com/sf > > _______________________________________________ > > Tapestry-developer mailing list > > [EMAIL PROTECTED] > > https://lists.sourceforge.net/lists/listinfo/tapestry-developer > > > > > ********************************************************************** > This message, including any attachments, contains confidential information > intended for a specific individual and purpose, and is protected by law. If you > are not the intended recipient, please contact sender immediately by reply > e-mail and destroy all copies. You are hereby notified that any disclosure, > copying, or distribution of this message, or the taking of any action based on > it, is strictly prohibited. > TIAA-CREF > ********************************************************************** ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Tapestry-developer mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/tapestry-developer
