But remember... not being reconstructed does not mean that you won't have MULTIPLE INSTANCES of the same page.....
... thanks to serialization ;)) so be warned if you code something that depends on instances. ** Martin 2010/7/7 Jeremy Thomerson <jer...@wickettraining.com>: > 2010/7/7 西门烧雪 Simon <sekatsi...@gmail.com> > >> I have read that "in Wicket a page is only constructed once", from >> https://cwiki.apache.org/WICKET/reading-from-a-database.html >> >> So I did an experiment with the following class. When I press F5 >> twice in my browser to refresh, and I get the print out (see below) >> three times. So, is the statement "in Wicket a page is only >> constructed once" correct? >> >> public class Echo extends WebPage { >> >> public Echo() { >> System.out.println(this.toString()); >> } >> >> } >> >> Print out: >> >> [Page class = org.appfuse.web.pages.echo.Echo, id = 0, version = 0] >> [Page class = org.appfuse.web.pages.echo.Echo, id = 1, version = 0] >> [Page class = org.appfuse.web.pages.echo.Echo, id = 2, version = 0] >> >> Thank you >> >> -- >> Simon >> 西门烧雪 >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org >> For additional commands, e-mail: users-h...@wicket.apache.org >> >> > You were on a bookmarkable page. The statement should be qualified. Every > time you hit a bookmarkable page, or redirect to a page via > setResponsePage(Class) or setResponsePage(Class, PageParameters), you will > create a page. But, for all stateful redirects, including stateful actions > within the page, the page is not reconstructed. > > Try this: > > add a private int counter to your page class. Then add the following > component and click the link: > > add(new Link("link") { > public void onClick() { > System.out.println("link was clicked - same instance of page"); > System.out.println(++counter); > } > }); > > -- > Jeremy Thomerson > http://www.wickettraining.com > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
