dataTable performance issue?

vh Aug 10, 2007 2:41 PM

<rich:dataTable
 id="myTable"
 rows="20"
 onRowMouseOver="richTableRowMouseOver('desktopForm:myTable', this)"
 onRowMouseOut="richTableRowMouseOut('desktopForm:myTable', this)"
 onRowClick="richTableRowClick('desktopForm:myTable', this)"
 cellpadding="0" cellspacing="0" width="700" border="0"
 var="desktop"
 value="#{allDesktopBean.list}">

I noticed that when showing the table, even the bean instance is still the same, the bean's getList() is called many many time. I think it should be called just once. Why it is called so many times?

1. Re: dataTable performance issue?

ishabalov Aug 10, 2007 3:01 PM (in response to vh)

getList() is called on every phase, as it suppose to by JSF spec. This is well known flaw of JSF spec.

To deal with it in a simple case you may cache list in request scope bean, or in more complicated cases use rich:dataTable as explained here

http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4072282
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