[jira] Commented: (MYFACES-1020) Having multiple dataTables on a single page increments the rowCountVar incorrectly.

["Dennis Byrne (JIRA)" <de...@myfaces.apache.org>]

    [ http://issues.apache.org/jira/browse/MYFACES-1020?page=comments#action_12362710 ] 

Dennis Byrne commented on MYFACES-1020:
---------------------------------------

Hello Daniel.  Can you do a favor for me and post your tags?  I also have a few questions here. 

1.) are you explicitly setting the id attribute of these two tags?  If so, is it the same value?
2.) are these two tags siblings (same parent tag) ?  If so, what happens if you make them non-siblings (just wrap one w/ a panelGroup).

I am able to reproduce your problem using the latest SVN but only under certain circumstances.  

First of all, the behavior that I am seeing is not restricted to rowCountVar .  I can get the entire dataModel ( for the value attribute) to be identical.  Furthermore, this is not just for dataTable, but really all attributes of all tags - but only if they are siblings w/ the same expicitly set id.  For example, MyFaces will let me do the following ...

<h:outputText style="background-color: blue" id="foo" value="1" />
<h:outputText style="background-color: green" id="foo" value="2" />

This will *not* throw a unique id exception, both will be blue, and both will render as "1".  This is because UIComponentTag.findComponent() gets confused.  In this case, the second tag will find it's brother's UIComponent and a second UIComponent will not be created ( see private findComponent() ).  There is no non-unique exception because there is no second UIComponent.  You can even do this ...

<h:outputText id="foo" value="1" />
<h:panelGrid id="foo">
     <h:outputText value="bar" />
</h:panelGrid>

This will print two outputTexts, not an outputText and a panelGrid.

> Having multiple dataTables on a single page increments the rowCountVar incorrectly.
> -----------------------------------------------------------------------------------
>
>          Key: MYFACES-1020
>          URL: http://issues.apache.org/jira/browse/MYFACES-1020
>      Project: MyFaces
>         Type: Bug
>   Components: Tomahawk
>     Versions: 1.1.1
>     Reporter: Daniel Ray
>     Priority: Minor

>
> Having multiple dataTables on a single page increments the rowCountVar incorrectly. First dataTable increments as expected, but the second dataTable will pick up the count where the first dataTable left off. Ensuring unique rowCountVar names does not appear to help.

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