Root dataverse not shown when deploying on Payara 5

[poikilotherm]

This issue has been triaged a while ago: see #5907, #5933 and #4172

In the following, it doesn't matter if you are logged in or not - these problems occur way before the authz in DataversePage.init() can happen.

When deploying develop (6bebe7f) to Payara 5, the following screen is shown:

After switching http://github.com/poikilotherm/dataverse/blob/develop/src/main/webapp/dataverse_header.xhtml#L313 to <h:messages id="messages"/>, you'll see this error message:

As f:viewActions are not executed when validation fails, DataversePage.init() will not be executed. Thus you have an empty Dataverse object in DataversePage, which results in all kind of funny side effects (because if no dataverse was present, it would have been set to null by init()), including the "New Dataverse" title, etc (see result in the first picture).

This has been verified by removing all code from DatasetPage.init() and inserting a throw new RuntimeException - nothing happens. See also here and here

Next question: why is alias failing validation?
Answer: because setting the alias name in the empty new Dataverse() object at DataversePage causes validation constraints to fail: Dataverse.java

[poikilotherm]

This has been attacked due to short notice availability of a pair programming partner here with knowledge about JSF. This was an evaluation to estimate options how to continue. Mentioning @djbrooke.

[scolapasta]

I'm going to ahead and close this issue as we've resolved it for #6230. (using the ideas that were suggested here, thanks @poikilotherm).