CODEWITHSUNDEEP
jsfjstlrichfacesseam
Joe
Joe

Reputation: 15359

c:forEach.items getting repetitively called

Environment: Seam, Richfaces

The following code snippet causes the method getUsers to be called multiple times, how do I avoid this in my application so that it gets called only once.

<c:forEach items="#{userHome.getUsers()}" var="_user">
</c:forEach>

Upvotes: 0

Views: 550

Answers (2)

Bozho
Bozho

Reputation: 597402

A rule of thumb is to avoid <c: tags when using JSF (unless you are sure they work as expected)

Here you'd better replace it with:

<a4j:repeat value="#{userHome.users}" var ="_user">
</a4j:repeat>

(or <ui:repeat> if using facelets)

PS: I guess getUsers() is JBoss' EL-extension, but I'd suggest not to use its extended features unless really needed.

Upvotes: 5

Shervin Asgari
Shervin Asgari

Reputation: 24517

And for the love of god, if you care about performance avoid using the EntityHome/Query framework. Just put a breakpoint or output on your getResultList() and see how many times it is being called. Now try the same think with a normal seam component. You will see a significant change(!)

Upvotes: 2

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