Not storing unnecessary versions looks like a feature for me.

Imagine a scheduler job that update some pages every night, I would be glad
that it does not create new versions when nothing has changed in the end.

Maybe I look at this with a biased vision: I know that having a lot of
versions of a document can cause problems (when we move the document for
example). If we had not this problem, maybe I would have the same opinion
than you.

Thanks,

2017-02-08 14:33 GMT+01:00 Thomas Mortagne <[email protected]>:

> Hi devs,
>
> We have a unintended regression in the standard import: if what you
> import is identical to what is already in the database (including the
> author) it won't add a new version (if you use the default option "Add
> a new version to the existing page").
>
> What happen in practice is that if you keep calling XWikiDocument#set*
> methods with the same data it won't update the metadata or content
> dirty flags. This flags are what hibernate store look at to know if it
> should add a new version or not.
>
> You can reproduce the same behavior with a simple script which load a
> document, always set the same content and save. You will notice that
> the history of that document does not change.
>
> So the question is do we force metadata dirty to true all the time in
> the instance output filter or do we keep this feature (in which case
> we should optimize it a bit to not do the useless XWiki#saveDocument
> but that's another subject).
>
> WDYT ?
>
> It could be seen as a nice feature but in practice my first reaction
> was WTF and you often want to be sure the import actually did
> something so I'm +1 to force metadata dirty. But I'm +0 to keep the
> current behavior if there is a majority for it.
>
> --
> Thomas Mortagne
>



-- 
Guillaume Delhumeau ([email protected])
Research & Development Engineer at XWiki SAS
Committer on the XWiki.org project

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