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https://issues.apache.org/jira/browse/CLK-718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bob Schellink resolved CLK-718.
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Resolution: Not A Problem
I don't see the bug. Click recursively scans up the hierarchy for the Page, so
you can have n deep hierarchies. What would be problematic is if a control
parent is not set, essentially creating orphaned controls.
> NullPointerException for Complex page structure with panels
> -----------------------------------------------------------
>
> Key: CLK-718
> URL: https://issues.apache.org/jira/browse/CLK-718
> Project: Click
> Issue Type: Bug
> Components: core
> Affects Versions: 3.0.0, 2.3.0-M1
> Environment: Linux, Java(TM) SE Runtime Environment (build
> 1.6.0_20-b02)
> Reporter: tomasz bandura
>
> For a complex page structure (for Panel embedded on another Panel), exception
> is raised:
> java.lang.NullPointerException
> at org.apache.click.control.Panel.createTemplateModel(Panel.java:789)
> at org.apache.click.control.Panel.render(Panel.java:752)
> at
> com.ratibor.control.PanelColumn.renderTableDataContent(PanelColumn.java:33)
> at org.apache.click.control.Column.renderTableData(Column.java:1191)
> at org.apache.click.control.Table.renderBodyRowColumns(Table.java:1879)
> (...)
> The reason is that the Panel (e.g. childPanel) which is on another Panel
> (rootPanel) has not parent Page because his parent is Panel (rootPanel) .
> Example of complex structure:
> mainPage--
> ------------------rootPanel--
> ---------------------------------childPanel1 <--- exception
> It also causes problem with access to the page.properties (i.e.
> $messages.<label>) and velocity does not work correctly (for example
> $format.date(<date>) )
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