Object bean = TagUtils.getInstance().lookup(pageContext, name, null); Niall
----- Original Message ----- From: "Dean A. Hoover" <[EMAIL PROTECTED]> To: "Struts Users Mailing List" <[EMAIL PROTECTED]> Sent: Friday, August 06, 2004 5:34 PM Subject: Re: very dynamic forms > Most changes I've been making so far have had to do with > ActionErrors. I have several custom tags I've developed and > am a bit uncertain as to how to fix: > > Object bean = RequestUtils.lookup(pageContext, name, null); > > The documentation says "[m]any utility methods previously found > in org.apache.struts.utils.RequestUtils have been moved to > org.apache.struts.taglibs.TagUtils or org.apache.struts.utils.ModuleUtils". > > So, I first tried: > > Object bean = TagUtils.lookup(pageContext, name, null); > > and got: > > CategoriesTag.java:31: non-static method > lookup(javax.servlet.jsp.PageContext,java.lang.String,java.lang.String) > cannot be referenced from a static context > > So, I figured I needed to create a TagUtils instance and did: > > TagUtils tagUtils = new TagUtils(); > Object bean = tagUtils.lookup(pageContext, name, null); > > and I got: > > CategoriesTag.java:31: TagUtils() has protected access in > org.apache.struts.taglib.TagUtils > > Do you know how to fix this? > > Thanks very much. > Dean > > > Niall Pemberton wrote: > > >For me it was very painless and although there aren't lots of big "killer" > >features - there are IMO lots of little ones that make this a good upgrade. > > > >Niall > > > >----- Original Message ----- > >From: "Dean A. Hoover" <[EMAIL PROTECTED]> > >To: "Struts Users Mailing List" <[EMAIL PROTECTED]> > >Sent: Friday, August 06, 2004 4:49 PM > >Subject: Re: very dynamic forms > > > > > > > > > >>Thanks. I am looking at Niall's Lazy stuff, but I like your idea. > >>I will add it to my list of investigations and experiments. I've > >>written quite a bit to struts 1.1. Is there a downside to upgrading? > >> > >>Thanks. > >>Dean > >> > >>Kevin A. Palfreyman wrote: > >> > >> > >> > >>>Dean, > >>>I do a similar thing with Struts 1.1, and I use an ordinary struts form > >>>(a subclass of ValidatorActionForm) that has a DynaBean as one of its > >>>fields. To match this, my DTO also has the same field as a DynaBean, > >>>and we just have to be a bit more clever when we copy properties between > >>>the two. The "schema" of the DynaBeans are configured entirely > >>>separately from the rest of the Struts stuff, and should be fairly > >>>easily done from a DB. In an upcoming version, the shape of the > >>>DynaBeans will be determined from data from a remote corba service. > >>> > >>>Unfortunately, this is all product specific (closed source), so I can't > >>>just pass it on (it wouldn't be useful to you anyway in its current > >>>form). But it should encourage you that it can be done. > >>> > >>>>From a quick read of his web page, Niall's Lazy stuff looks very > >>>promising. If I were starting again, I might have a look to see if that > >>>would fit. > >>> > >>>Good luck, > >>> > >>>Kev > >>> > >>> > >>> > >>> > >>> > >>>>-----Original Message----- > >>>>From: Dean A. Hoover [mailto:[EMAIL PROTECTED] > >>>>Sent: 06 August 2004 15:47 > >>>>To: Struts Users Mailing List > >>>>Subject: Re: very dynamic forms > >>>> > >>>>What I need to do is construct a form that has a variety of > >>>>text input forms on it that are determined at run-time. I > >>>>know how to do this in jsp but I need to provide an > >>>>ActionForm that conforms to that form. > >>>>I got several useful replies last night and am investigating them. > >>>> > >>>>Dean > >>>> > >>>>Michael McGrady wrote: > >>>> > >>>> > >>>> > >>>> > >>>> > >>>>>That makes sense, but his other comments seem to negate that. He > >>>>>says, e.g., that "[w]hat would come out of the query would > >>>>> > >>>>> > >>>>> > >>>>> > >>>>be label, > >>>> > >>>> > >>>> > >>>> > >>>>>form position, variable name,etc, etc.". These are things > >>>>> > >>>>> > >>>>> > >>>>> > >>>>that are on > >>>> > >>>> > >>>> > >>>> > >>>>>the page form, not on some dynamic class handling the form. He > >>>>>specifically rejects dynamic class structures in fact when he says > >>>>>that he has worked with DynaActionForm and ActionForm and that they > >>>>>don't fit the bill. I think he is focusing on the idea of having > >>>>>changing variables on the page form and how to handle this on the > >>>>>backend. Is that right, Dean? > >>>>> > >>>>>Michael > >>>>> > >>>>>At 01:40 AM 8/6/2004, you wrote: > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>>>I thought that > >>>>>> > >>>>>>" I want to build one on-the-fly according to > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>"configuration" stuff > >>>> > >>>> > >>>> > >>>> > >>>>>>stored in a database, that can change. " > >>>>>> > >>>>>>was pretty clear, especially after he pointed out the > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>DynaActionForms > >>>> > >>>> > >>>> > >>>> > >>>>>>weren't what he was looking for because they came from > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>struts config. > >>>> > >>>> > >>>> > >>>> > >>>>>>But maybe it's just me - I'm used to wondering about what (weird > >>>>>>stuff) I can do in Struts. > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>>>>>>>At 05:00 PM 8/5/2004, you wrote: > >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>> > >>>>>>>>>>>>Suppose I want to construct a form based on a query to a > >>>>>>>>>>>>database. What would come out of the query would > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>be label, > >>>> > >>>> > >>>> > >>>> > >>>>>>>>>>>>form position, variable name, etc, etc. What would be the > >>>>>>>>>>>>recommended way of building this under struts/tiles? I've > >>>>>>>>>>>>been working with struts/tiles for a while now > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>and this is > >>>> > >>>> > >>>> > >>>> > >>>>>>>>>>>>the first time this sort of requirement has come up. I've > >>>>>>>>>>>>used DynaActionForm and ActionForm, but do not > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>see how this > >>>> > >>>> > >>>> > >>>> > >>>>>>>>>>>>sort of thing fits either model. > >>>>>>>>>>>> > >>>>>>>>>>>>Any ideas? > >>>>>>>>>>>> > >>>>>>>>>>>>Dean Hoover > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>>>>>>>>>> > >>>--------------------------------------------------------------------- > >>>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>>For additional commands, e-mail: [EMAIL PROTECTED] > >>> > >>> > >>> > >>> > >>> > >>> > >> > >>--------------------------------------------------------------------- > >>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>For additional commands, e-mail: [EMAIL PROTECTED] > >> > >> > >> > >> > >> > > > > > > > >--------------------------------------------------------------------- > >To unsubscribe, e-mail: [EMAIL PROTECTED] > >For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
