[Exist-open] Improvements to the package repository

[Wolfgang M. <wol...@ex...>]

I extended eXist's expath package repository with additional
deployment features. There's a new function repo:deploy to install an
application package. The repo.xml package descriptor format has been
extended to allow pre-/post-setup XQuery scripts to be run
automatically, configure the target collection and default
permissions. The documentation
(http://localhost:8080/exist/repo/repo.xml) describes this.

When you build eXist trunk, you'll find a number of installable .xar
packages in webapp/repo/packages. Those can be uploaded to the
repository using the corresponding page of the admin web app
(http://localhost:8080/exist/admin/admin.xql?panel=repo).

I added an example, the mobile XQuery function docs browser, which is
based on jQuery mobile and provides optimized access to the XQuery
function docs for mobile devices. To install it, use the "Upload
package" button on the "Package Repository" page of the admin web app.
After uploading, click "activate", then "deploy". The post-install
script automatically loads and indexes the function docs.

After deployment, you should be able to go to

http://localhost:8080/exist/apps/mobiledocs/

and browse the docs.

In the future, the package repository should become the central
mechanism to distribute and install applications into eXist. More work
will be required to make this process more user-friendly. In
particular, the admin page needs to be improved.

Wolfgang