Hi,
Am 15.05.2008 um 22:11 schrieb janandith jayawardena:
The extensions directory in sling contains 3 directories.
There are a few more now, because there was some refactoring of Slings
source organization.
1. apt
This contains actually 2 bundles, a servlet for handling requests with
*.aptml extension and a parser for transforming APT files (http://maven.apache.org/doxia/references/apt-format.html
) into HTML. Since APT is a kind of simple markup language (like wiki
markup) this can be used for implementing wiki apps (or other social
apps with user generated content). Your user can just write their
content in APT and the app stores it in a file. You can then access
the content file using *.aptml extension and you get an HTML view of
that content.
2. dojo
This provides the core sources of the latest DOJO release as content
and allows you to use DOJO in your client implementations.
For instance you can add something like the following code snippet to
your JSPs and then use DOJO for implementing a rich client:
<script type="text/javascript" src="<%= request.getContextPath() %>/
dojo/dojo.js" djConfig="isDebug:false, parseOnLoad:true"></script>
<script type="text/javascript">
dojo.require("dojo.parser");
</script>
3. dojo-ujax
This contains some DOJO extensions like a Sling based DOJO store which
can be used for storing content from DOJO widgets into the repository
that comes with Sling.
How can i use these extensions and what are the roles of each
extension in
sling ?.
Generally the role of the extensions is to provide functionality that
goes beyond the core of Sling, which is targeted at providing a
RESTful framework (as set of bundles/services) and API for building
applications on top of JCR compliant repositories. Since Sling is
based on OSGI you can just install the bundles using the Sling Console
or the Maven Sling plugin. After that the functionality should be
available.
Is apt used for list processing. If so how does it fit in sling ?.
See above.
I would also like to know more about ujax. Is it related to Ajax.
ujax is a kind of HTTP based protocol for manipulating content in the
JCR repository that comes with Sling. It was originally developed as
part of microsling and is now merged into Sling. It consists of two
parts. One is the SlingPostServlet that allows to create, delete, copy
and move nodes by using HTTP requests. The other part is the sling
client library which provides JS methods for working the
SlingPostServlet. Since the protocol is HTTP, you can easily
manipulate content using XHR requests and thus access it directly with
AJAX clients.
Hope this helps.
Regards,
Alex
