Excel Export Control uses HTTP get request, which should avoid restore view
phase, thus the DataTable will be unavailable.
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Key: TOMAHAWK-1230
URL: https://issues.apache.org/jira/browse/TOMAHAWK-1230
Project: MyFaces Tomahawk
Issue Type: Bug
Affects Versions: 1.1.6
Environment: Any
Reporter: Chris Hornsey
I was recently debugging the excelExport component and phaseListener. A core
requirement of this component is that the user clicks the link created by the
component and the browser will send a get request to reopen the page. The
phase listener will fire on the restore view phase, and write the excel
representation of the table to the response prior to the response being written
to the client.
According to the JSF spec, if the JSF handler receives a get request from a
client it should bypass recreating the component tree during the restore view
phase and go directly to the render response phase since clearly nothing has
changed in the view. When this happens the phase listener will throw a null
pointer exception due to the fact that the component can not be retrieved from
the view since the view will not be recreated until the response is rendered.
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