| This interface defines the methods components like
Listbox use to notify the renderer for several circumstance.
Though
ListitemRenderer.render is called one item a timer,
a request might have several items to render. And, if the renderer
implements this interface,
RendererCtrl.doTry will be called before
any redering, and
RendererCtrl.doFinally will be caleld after all rendering.
If any exception occurs,
RendererCtrl.doCatch will be called.
A typical use is to start a transaction and use it for rendering
all items from the same request.
author:
tomyeh |