How to use rowkeyvar??

[xiaocase]

In richfaces 3.0.1-snapshot,,, datatable has a property named " rowkeyvar ",, how to use it???? is there any documents about it??? and dropdown menu???

[ilya_shaikovsky]

Attribute stores the rows numbers.
very simple example

<rich:dataTable rowkeyVar="rowkey"... >
...
 <h:column>
 <h:outputText value="#{rowKey}">
 </h:column>
</rich:dataTable>

will output nubmers of rows.

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