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From "Nicolas " <nto...@gmail.com>
Subject Re: Adding a method to PropInfos
Date Tue, 15 Aug 2006 11:47:25 GMT
Of course.

Actually the backup tool is backupping all workspaces and the version node
histories using the XML system view. The advantage of this approach are:
easiness to check the backup is correct, easiness to modify a backup if
needed, built as much as possible on JCR and a little bit on Jackrabbit API,
built on top of existing code so safer in the long run.

Other approaches has been thought of but eliminated compared to the ease of
use of the system view. Please see the wiki on this.

The issue lay in restoring content: the importXML methods have never been
planned to allow restore. They check the content is correct and do not break
anything. For instance, you can't write to a protected Item through this
method. It is of course the right behavior. This is why I wrote  a custom
importer (heavily borrowing code from the WorkspaceImporter) to escape all
checks. But I couldn't do this with PropInfo: a class used to pass the
property of a Node to an Importer... This  class contains a method apply.
This method checks for protection and I need to escape it. It's why I added
a method which *do not* check any protection. It is a small method which
don't break anything and might be useful for others. I am of course open to
other ideas on this issue :) I realize it is not the best solution, but the
best I currently have.

In the longer term, Jukka suggested to create a parameter maintenance mode
which would escape all test (and other things) to allow easier maintenance
of the repository.

I have a similar issue with restoring the Node Version Histories but it's
another post ;)

my blog! http://www.deviant-abstraction.net !!

On 8/15/06, Jukka Zitting <jukka.zitting@gmail.com> wrote:
> Hi,
> On 8/15/06, Nicolas <ntoper@gmail.com> wrote:
> > I am working on a backup and restore tool for Jackrabbit. It's why I
> need to
> > escape all checks since I am writing protected node (for this reason).
> Could you elaborate on the details, i.e. why you chose the system view
> XML format for the backup, why you can't use the standard import
> functionality for restoring the backups, what alternatives have you
> looked at, what you think is the best solution, and why you need
> changes to Jackrabbit core to implement that?  That would give people
> more background on why you want to modify PropInfo. Just saying that
> it's needed for the restore tool and that you need to write a
> protected node doesn't explain the reasoning behind this requirement.
> :-)
> BR,
> Jukka Zitting
> --
> Yukatan - http://yukatan.fi/ - info@yukatan.fi
> Software craftsmanship, JCR consulting, and Java development

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