B:\datenbrei » Java

digging into XMPP/Jabber pubsub again, for micropublishing

[GNU] — Sat, 23 Feb 2008 11:46:12 +0000

For the last few days I tries to relax by having some ideas how to make the micropublishing world a better place. I would like to be able to push information to some of my peers. Not only that I would like to save a bookmark at delicious and tag it with “for:someone”. I would like to have a more instant way to show them what gets my attention at the moment and what I think might interest them.

The weapon of choice for near real time information delivery is obviously XMPP. I will use publish-subscribe to provide information, by doing so any of my peers may or may not subscribe to a node onto which I publish information. And I will set up a hierarchy of nodes onto which I will publish different kinds of information. So here we go with the root node: home/b4mad.net/goern, this is mainly due to the fact that I use ejabberd2 to run my XMPP Server. There are a few subnodes:

bookmark – for bookmarks that I send out, I need to figure out the format of published information
micropublish – for twitter like things, that is basically Atom over XMPP
media/stillimage – for a photostream…

As a good semantic web citizen I will note down what nodes exist at which URI and what they are used for. The first rough scratch is available.

For the moment there is a shell like Java application which accepts two commands: exit and purge, to exit the shell and purge off all items from the micropublish node. Any other words typed in the shell will be treated a an micropublish update and published as a Atom entry to my micropublish node. The second application is a gateway to twitter.com: it is subscribed to my pubsub micropublish node and will pick up any atom entry and post it as a twitter update.

The next thing it write up is a process and format to publish my bookmarks and to have some nice GUI clients that can handle my updates… Or should it be integrated into WorkPress?!

Generating SIOC data out of mailing list archives

[GNU] — Tue, 30 May 2006 06:23:47 +0000

SIOC provides "an ontology for describing discussion forums and posts on topic threads in online community sites" and so called exporters for WordPress or Drupal blogging/cms software. Using that one is perfectly suited to provide information about the activities of communities on websites. A exporter for mailing lists (which are heavily used by communities too) is not provided. I will outline how such a SIOC mailinglist exporter may work…

I like to reuse, so that’s the first policy.
The second policy is, that I dont want to deal with the email archives, but will use RSS or Atom representation of the archive as the source of information.

How to understand the information provided by mailing list archives in a SIOC context?

First of all, the mailing list archive is obviously a sioc:Forum (archive itself represented by a RSS or Atom feed) with sioc:Posts (individual mails, RSS/Atom items). The sender of the mail is a sioc:User, which is the sioc:has_creator of the sioc:Post. The website hosting the mailing list archive is defined as the sioc:Site, the initialy mentioned sioc:Forum sioc:has_host this sioc:Site. Got it?

As a test subject I took the SIOC-dev mailing list at Google Groups, development is supported by RDFReactor.

Results of my work can be found 1. as Java code and 2. as the resultung SIOC data.

Comments and any other feedback is welcome!

WITW GUI Client

[GNU] — Thu, 05 Jan 2006 07:53:59 +0000

Over the last few weeks I have enhanced my skills in GUI design and programming, not good jet, but here is what I hacked: a Thinlet driven GUI client for WITW webservice. Feel free to download and comment on the current version.

The GUI is pretty simple, you may get or set the current position of a user. The username (and if available) the passowrd may be set in the Preferences dialog. It you get the current position of a user the landmark combobox is updated with the landmarks of the user. That’s it, not much but a start.

next step: find foaf file location of user and display his menow status :)

WITW Java webservice Interface

[GNU] — Thu, 01 Dec 2005 17:11:30 +0000

Today I finished packaging up some of the Java Code I did. I released a WITW-webservice.jar which contains some classes to use with the Where in the World (WITW) web service of Norman Walsh.

The .jar contains the full source but no documentation jet…

TODO: write documentation.