Em Wed, 24 Jun 2009 18:11:28 -0300, Howard Lewis Ship <hls...@gmail.com>
escreveu:
@Retain are per-instance which can be much different than a static.
@Retain looked like a good idea at the time, but I have never used it in
a project.
I use it to cache some class-specific values got from services in generic
abstract pages (Tapestry CRUD' BaseEditPage, for example). In
BaseEditPage, I need a Controller instance, but it is specific to the
entity class being edited, and there's one BaseEditPage subclass for each
entity class. Instead of using my ControllerSource service everytime I
need a Controller, I @Retain the Controller instance, setting it in
BaseEditPage's constructor.
--
Thiago H. de Paula Figueiredo
Independent Java consultant, developer, and instructor
http://www.arsmachina.com.br/thiago
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