[jbossseam-issues] [JBoss JIRA] Updated: (JBSEAM-2185) s:selectItems performance issue with many combo-box items

Pete Muir (JIRA) jira-events at lists.jboss.org
Tue Oct 30 10:05:01 EDT 2007


     [ http://jira.jboss.com/jira/browse/JBSEAM-2185?page=all ]

Pete Muir updated JBSEAM-2185:
------------------------------

    Fix Version/s: 2.0.x

> s:selectItems performance issue with many combo-box items
> ---------------------------------------------------------
>
>                 Key: JBSEAM-2185
>                 URL: http://jira.jboss.com/jira/browse/JBSEAM-2185
>             Project: JBoss Seam
>          Issue Type: Bug
>          Components: JSF
>    Affects Versions: 2.0.0.CR3
>            Reporter: Stephan Bublava
>            Priority: Minor
>             Fix For: 2.0.x
>
>
> UISelectItems.asSelectItems() iterates over all combo box items and calls getLabel() and getDisabled() (usually value expressions) twice per entry:
> for (Object o : iterable)
> {
>     initVar(o);
>     selectItems.add(new javax.faces.model.SelectItem(o, getLabel() == null ? null : getLabel(), "", getDisabled() == null ? false : getDisabled()));
>     destroyVar();
> }
> Using local variables can make a noticeable difference, if there are many combo box items.

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