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https://issues.apache.org/jira/browse/WICKET-4153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13133667#comment-13133667
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Martin Grigorov commented on WICKET-4153:
-----------------------------------------

@Bertrand: NoRecordsToolbar is added by default in DefaultDataTable, but it is 
optional by default. I.e. a user can use DataTable without adding 
NoRecordsToolbar neither in the top nor in the bottom toolbars.
Your patch is good Wicket-wise, but as Sven noted it is semantically bad, e.g. 
it is wrong for SEO. 
                
> The tbody section of a DataTable is empty when no records are returned by the 
> provider.
> ---------------------------------------------------------------------------------------
>
>                 Key: WICKET-4153
>                 URL: https://issues.apache.org/jira/browse/WICKET-4153
>             Project: Wicket
>          Issue Type: Bug
>          Components: wicket-extensions
>    Affects Versions: 1.5.1
>            Reporter: Bertrand Guay-Paquet
>            Priority: Trivial
>              Labels: datatable
>             Fix For: 1.5.3
>
>         Attachments: DataTable-usePlainTR.diff, DataTable.patch, 
> DataTableTest-usePlainTR.diff, good.png, with_patch.png, without_patch.png
>
>
> When a DataTable is rendered without records, the tbody section is empty. 
> This violates the html spec.
> From the spec:
> "When present, each THEAD, TFOOT, and TBODY contains a row group. Each row 
> group must contain at least one row, defined by the TR element."
> and
> "The THEAD, TFOOT, and TBODY sections must contain the same number of 
> columns."

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