Yes, the default semantics is that it will only create the ASO instance
once you try to access it.
Still, it seems to me that many times this semantics doesn't really make
sense, in the cases where the ASO being null has a meaning. The simplest
case being for example when you want to keep as an ASO the logged user.
I know the docs say that you can keep a boolean value keeping score if
the ASO was actually created or not, but to me this seems to go against
everything T5 stands for. This kind of thing really should be easy.
Davor Hrg wrote:
I haven't checked it in practice, I belived what docs say:
http://tapestry.formos.com/nightly/tapestry5/tapestry-core/guide/appstate.html
I think the object will not be created if you do not try to access the variable.
Davor Hrg
On Dec 20, 2007 4:36 PM, Hugo Palma (JIRA) <[email protected]> wrote:
It should be easy to initialize an ASO to null
----------------------------------------------
Key: TAPESTRY-1991
URL: https://issues.apache.org/jira/browse/TAPESTRY-1991
Project: Tapestry
Issue Type: Improvement
Components: Framework
Affects Versions: 5.0.6
Reporter: Hugo Palma
Priority: Minor
By default an ASO is never null. It's automatically created using the ASO class
default constructor.
It's many times needed to have the null value in an ASO, for example if i want
to keep the logged in user in an ASO.
Right now we can do this by contributing a new ApplicationStateCreator to the
ApplicationStateManager but it seems to me that should be as easy as providing
a parameter to the @ApplicationState indicating that you don't want it to be
automatically initialized.
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