controller methods called multiple times

[mow.spackenwasser.gmx.de]

Hi,

im pretty new to seam/JSF but i already run into a potential performance problem with my code.
i have multiple links which shall be rendered depending on the users roles etc:

Controller:

public boolean allowViewHistory() {
          return securityManager.isPersonAuthorized(...);//this call may be expensive
     }

View:

<s:link view="/history.xhtml" rendered="#{oucontrol.allowViewHistory()}">...

Debugging shows that the method is called 5 times per Page request, while the method is only referenced once on the JSF. How can i effectivly prevent this without caching the results in the controller? i have a lot of such small but potential expensive controller methods..

[mow.spackenwasser.gmx.de]

almost forgot:
Running Jboss 5.1, Seam 2.2 with Richfaces

[kragoth]

Well, I was going to write a way to work around this problem only to find out my work around doesn't actually work! sigh

So anyways, the explanation to  your problem and the potential solution can be found here http://jsfcentral.com/articles/speed_up_your_jsf_app_1.html. This article is VERY good. I would recommend bookmarking it.

[mow.spackenwasser.gmx.de]

thanks, that explained a lot. for the moment i can live with the c:if-workaround