IMO that's too much work for the presentation layer; if someone is passing nested arrays and expecting the ability to get arbitrary traversals using OGNL they're barking up the wrong tree.
Dave On Fri, Jul 8, 2011 at 9:18 AM, Jason Pyeron <jpye...@pdinc.us> wrote: >> -----Original Message----- >> From: Lukasz Lenart [mailto:lukasz.len...@googlemail.com] >> Sent: Friday, July 08, 2011 6:16 >> To: Struts Developers List >> Subject: [struts-dev] Re: I am working on extending the >> iterator tag and I am requesting opinions >> >> Any news on that ? > > Object navigation works nicely, we are using it in production on 2 projects > right now. > I am still writing unit tests. > > What does not work (because it is ill defined) is navigation on arrays of > arrays. > > Ex: [1,2,3,[4,5],6,[7,[8,9]]] > > How should that be navigated? My intended solution is to allow the use of a > lambda expression in OGNL to "select" nodes to traverse. But I have not been > able to write a working lambda expression for the above traversal to iterate > as > 1,2,3,4,5,6,7,8,9 > > When I get that done it will be bulletproof. > > -Jason > >> >> >> Regards >> -- >> Lukasz >> + 48 606 323 122 http://www.lenart.org.pl/ >> Warszawa JUG conference - Confitura http://confitura.pl/ >> >> >> 2011/6/7 Jason Pyeron <jpye...@pdinc.us>: >> > Currently the iterator component searched the stack for the >> iteration >> > target, then while iterating it pushes the value to the stack. >> > >> > In my extension I have support for pre and post traversal >> of a tree structure. >> > The pre and post selectors are OGNL expressions. As such it >> is needed >> > to have the current node in a value stack during resolution of >> > left/pre and right/post children for a give node. >> > >> > The question is begged should it be pushed on for >> evaluation and then >> > popped off after or should it be pushed on before the current value >> > (in between the current value and the "action")? >> > >> > My gut is telling me that push and pop will result in the least >> > surprise for a developer using it, as there is no >> possibility of the >> > node masking an action, but this prevents access of the node from >> > inside the iterator except through some "status" like option. >> > >> > -Jason >> > >> > -- >> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- >> > - - >> > - Jason Pyeron PD Inc. http://www.pdinc.us - >> > - Principal Consultant 10 West 24th Street #100 - >> > - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - >> > - - >> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- >> > This message is copyright PD Inc, subject to license 20080407P00. >> > >> > >> > >> > >> --------------------------------------------------------------------- >> > To unsubscribe, e-mail: dev-unsubscr...@struts.apache.org For >> > additional commands, e-mail: dev-h...@struts.apache.org >> > >> > >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: dev-unsubscr...@struts.apache.org For >> additional commands, e-mail: dev-h...@struts.apache.org >> >> > > > -- > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > - - > - Jason Pyeron PD Inc. http://www.pdinc.us - > - Principal Consultant 10 West 24th Street #100 - > - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - > - - > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > This message is copyright PD Inc, subject to license 20080407P00. > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@struts.apache.org > For additional commands, e-mail: dev-h...@struts.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@struts.apache.org For additional commands, e-mail: dev-h...@struts.apache.org
