You can't just call a method in an instance of an object that is in a
different app. That's not possible short of using some kind of rpc
mechanism between the two applications. But you can provide a link
which will take the user to a page in app2 and cause a listener to be
executed. If you want to be able to receive parameters in the URL
string for a page, have that page implement IExternalPage. The
signature method for that interface receives an array of parameters,
which you can use to populate your page object with data before it
renders. I don't know, offhand, of a way to cause a listener to be
called automatically, but you could just call a listener method
manually in activateExternalPage() after you've populated your page
with data. That would be the equivalent of having a listener attached
to a form, which gets called just before the page enters its rewind
cycle. So as long as app1 can provide a querystring in the format
understood by the External service, then you can provide such a link.
Alternatively, instead of using the standard tapestry parameter
structure, you can just use normal name/value query string pairs, and
get the values out of the ServletRequest yourself. This is the only
way to have a form in one app post directly a page in another app
short of writing javascript to manipulate the outgoing query
parameters.
--sam
On 10/19/06, Peter Beshai <[EMAIL PROTECTED]> wrote:
Say I have two Tapestry applications (app1 and app2) and there is a listener
in app2 that I want to call from app1.. is it possible? I imagine it is, but
I am lost as to how to implement it.
Basically, I have an application that handles bookmarks(app2). In app1 I can
upload a file and bookmark the link to it on the server (but all the editing
of the bookmark thereafter would happen in app2). So after
uploading/bookmarking[adding to the bookmark db] in app1, I want to post a
link to edit the bookmark. So I essentially want to call the edit bookmark
listener in app2 with a parameter from app1 (ie the bookmark id).
My edit listener in app2 looks like this:
public IPage onEditLink(IRequestCycle cycle, Serializable bookmarkId)
{
AddBookmark page=getAddBookmarkPage();
page.setBookmarkId(bookmarkId);
return page;
}
I'm not sure how to implement the right kind of listener in app1 to have it
do the same thing (essentially).
Any suggestions?
Peter Beshai
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