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Message-ID: <bc36a6210803261608j28e94ca4gf32d9c0cc3f570d1@mail.gmail.com>
Date: Wed, 26 Mar 2008 17:08:53 -0600
From: "Andrew Robinson" <andrew.rw.robinson@gmail.com>
To: "MyFaces Discussion" <users@myfaces.apache.org>
Subject: Re: [Trinidad] tr:selectOneChoice and Objects that cannot override
 equals
In-Reply-To: <010e01c88f90$535f3470$fa1d9d50$@com>
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References: <4638131095683041879@unknownmsgid>
	 <bc36a6210803261402w24f73888k24d57248dd360151@mail.gmail.com>
	 <010e01c88f90$535f3470$fa1d9d50$@com>

The problem is that getAsObject should not return a new Person object,
but the exactly the same object that was converted using getAsString.
That means you either have to use something like t:saveState, session
or conversation scoping or implement an equals method on person.

-Andrew

On Wed, Mar 26, 2008 at 4:25 PM, Justin mcKay <justinmckay@gmail.com> wrote:
> That's what I thought as well, but did not seem to work.  Let's just say
>  that the Person object has only one parameter, id which is a Long.  So the
>  getAsString method would just return the id.  The getAsObject method would
>  create a Person object and set the id and return the Person.  So far so
>  good.  Well when I try and display the selectOneChoice it still does not
>  correctly select the proper Person.  The log has an entry that says warning
>  could not find the Person object to be selected. So this suggests that the
>  value of the selectOneChoice does not get converted, only the selectItems.
>  This seems to be the case.  I have three Persons in the selectItems and a
>  breakpoint in the converter's getAsString method.  When I run it the
>  breakpoint is only reached three times, where I it should be four (one for
>  the selectOneChoice's  value and three for the three selectItems).  Is this
>  assumption incorrect?
>
>
>
>  -----Original Message-----
>  From: Andrew Robinson [mailto:andrew.rw.robinson@gmail.com]
>  Sent: Wednesday, March 26, 2008 2:03 PM
>  To: MyFaces Discussion
>  Subject: Re: [Trinidad] tr:selectOneChoice and Objects that cannot override
>  equals
>
>  Use a custom converter on the choice that converts your object, or
>  register a class-converter for all the different classes in your app
>  that need to be converted.
>
>  On Tue, Mar 25, 2008 at 4:50 PM, Justin Mckay <justin.mckay@famis.com>
>  wrote:
>  >
>  >
>  >
>  >
>  > I have a situation where I have some generated objects that do not
>  override
>  > equals that I would like to use in a selectOneChoice field.  The  issue is
>  > the selected object may not be the same object from the list of objects in
>  > the selectItems.  For instance:
>  >
>  >
>  >
>  > <tr:selectOneChoice value="#{bean.person}">
>  >
>  >      <f:selectItems value="#{peopleFinder.people}"/>
>  >
>  > </tr:selectOneChoice>
>  >
>  >
>  >
>  > So here bean.Person is a generated type Person and peopleFinder.people
>  will
>  > be a Map<String,Person> of the same generated type.
>  >
>  >
>  >
>  > The way we have been handeling this is we have been wrapping the objects
>  > with another object that has a properly implemented equals method.  This
>  > works but requires us to write more code, I was thinking there would be an
>  > easier way to do this, any ideas?
>  >
>  >
>  >
>  > Thanks,
>  >
>  >
>  >
>  > Justin
>
>