Hi Laurent,

> I discovered BaseX recently and I find it really powerfull. Unfortunately, I
> read that versioning was not supported out of the box in 2014 [1]. Is it
> still the case ? Is there no simple workaround ?

BaseX does not come with an out-of-the-box solution for versioning XML
documents, but there are many ways to realize this via XQuery or the
existing commands. You could e.g. attach timestamps in the database
file paths or update information in an additional XML meta file with
each request. We have also started defining document metadata
properties [1], but this is still work in progress.

> A simple way to achieve such a behaviour would be to be able to index a XML
> resource in BaseX with some additional meta information such as an ID and a
> timestamp, and then offer the possibility to use these meta information in
> an XQuery to filter resources.
>
> Is it possible with BaseX 8.3 ?

This is absolutely possible. I don’t know how much time you have
already spent with XQuery, but could check out our Wiki articles on
XQuery Update [2] and the Database Module [3].

Hope this helps,
Christian

[1] https://github.com/BaseXdb/basex/issues/988
[2] http://docs.basex.org/wiki/XQuery_Update
[3] http://docs.basex.org/wiki/Database_Module

On Wed, Dec 23, 2015 at 2:18 PM, Laurent Pellegrino
<laurent.pellegrino@activeeon.com> wrote:
> Hello all,
>
> I discovered BaseX recently and I find it really powerfull. Unfortunately, I
> read that versioning was not supported out of the box in 2014 [1]. Is it
> still the case ? Is there no simple workaround ?
>
> My usecase is the following. I have thousands of XML files which are indexed
> using BaseX in a specific database, lets say "mydb". At some point of time,
> a user may want to add a new XML file which is a slightly modified version
> of one already indexed by BaseX.
>
> I would like to be able to:
>
>   - store this new XML resource in "mydb" database without loosing the XML
> from which it is issued
>   - to retrieve the latest version or a previous one.
>   - filter resources based on the latest version
>
> A simple way to achieve such a behaviour would be to be able to index a XML
> resource in BaseX with some additional meta information such as an ID and a
> timestamp, and then offer the possibility to use these meta information in
> an XQuery to filter resources.
>
> Is it possible with BaseX 8.3 ?
>
> I am looking for a solution that does not a require another database.
>
> [1]
> https://mailman.uni-konstanz.de/pipermail/basex-talk/2014-March/006535.html
>
> Kind Regards,
>
> Laurent Pellegrino
>