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From "Christophe Lombart" <christophe.lomb...@gmail.com>
Subject Re: Sling Proposal
Date Fri, 03 Aug 2007 08:13:10 GMT
Maybe we can add this kind of info in the wiki.


On 8/3/07, Felix Meschberger <fmeschbe@gmail.com> wrote:
> Hi Ransford,
> Am Mittwoch, den 01.08.2007, 13:46 -0700 schrieb paksegu:
> > I have read the documention but I am still confuse on the purpose and
> benefit of sling, can you please give me  a brief explanation of what is
> does and where it applicable, say a usecase scenario.
> Basically, the intent of Sling is to be JCR-based web application
> development framework. All content delivered is backed by actual
> Repository Content (Nodes and Properties). As such, a request is
> resolved against a Repository Node, loaded (using the JCR Mapper) into a
> Java Object called the Content object, which is handed to a Component
> object which in turn handles the Java Object representing the node and
> renders the response.
> The uses of these are vast and way beyond my own imagination (David is
> much better at that :-) ). But here are a few ones:
> Wiki
> ----
> We built a Wiki system on Sling. Each Wiki page is a node (with optional
> child nodes) in the repository. As a page is requested, the respective
> node is accessed and through the applying Component is rendered.
> Thanks to the JCR Mapping and the resolution of the Component from the
> mapped Content, the system does not care for what actual node is
> addressed as long as there is a Content mapping and a Component capable
> of handling the Content.
> Thus in the tradition of REST, the attachement of a Wiki page, which
> happens to be in a node nested below the wiki page node is easily
> accessed using the URL of the wiki page attaching the relative path of
> the attachement node. The system resolves the URL to the attachement
> Content and just calls the attachement's Component to spool the
> attachement.
> Digital Asset Management
> ------------------------
> Day has implemented a Digital Asset Management (DAM) Application based
> on Sling. Thanks to the flexibility of the Content/Component combo as
> well as the service registration/access functionality offered by OSGi,
> extending DAM for new content type is merely a matter of implementing
> one or two interfaces and registering the respective service(s).
> Again, the management assets may be easily spooled by directly accessing
> them.
> Web Content Management
> ----------------------
> Last but not least, Sling offers it self very well to implementing a Web
> Content Management system. Thanks to the flexibility of rendering the
> output - remmber: the system does not care what to render, as long as
> the URL resolves to a Content object for which a Component exists, which
> is called to render the Content - providing support for Web Content
> authors (not PHP programmers but users out in the field) to build pages
> to their likings can easily be done.
> I hope these examples helped clarfiy a bit the scope of Sling and what
> can be accomplished.
> Regards
> Felix

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