• JBossWorld Keynote Demo | Drools – Because Knowledge Matters | Planet JBoss Community – from Aggregated feed of all JBoss feeds http://planet.jboss.org/view/all

• The Naked Marketing Guide to Getting Dramatically More Traffic and Subscribers –
• World Bank Linked Data – Interesting SPARQL queries –
• Shared Stuff –
• Katello Project – System Environment Management –
• OpenCorporates news | News about the Open Database of the Corporate World –

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?!

• dont have sex… seems like a nice posting that helps understand how the web of trust in blogosphere works
• mining user’s content
• Jabber :: JSF :: IPR Policy Jabber Software Foundation’s official policy regarding intellectual property rights
• dynamic reading lists

Especially the last one attracted my attention… what about a dynamic readinglist that adjusts itself using statistics of my reading, tries to filter out over-updated feeds and lowers priority of feeds that doesnt seem to meet my current reading habits?

ikvmc commons-logging.jar log4j-1.2.12.jar  -out:log4j.dll -target:library
ikvmc stax-api-1.0.jar wstx-asl-2.8.jar xercesImpl.jar xml-apis.jar \
 resolver.jar -out:xml.dll -target:library
ikvmc antlr-2.7.5.jar arq.jar concurrent.jar icu4j_3_4.jar \
jakarta-oro-2.0.8.jar jena.jar -reference:xml.dll -reference:log4j.dll \
 -out:arq.dll -target:library

A short test if the Jena classes are working was derived from an example of the Jena documentatio and worked out just fine… replacing import with using and omitting the trailing .* gave quick working results.

The hard part starts if it comes to persistent Jena Models. I am using MySQL, so I ikvmced the Java MySQL 3.2alpha driver and used the following code segment as learned from the docs:

  System.Activator.CreateInstance("mysql32alpha", 
     "com.mysql.jdbc.Driver");

  IDBConnection idbcon = new  DBConnection("jdbc:mysql://db-server-2/jena23", 
     "jdbc", "password", "MySQL");

mysql32alpha is the name of the assembly where the class com.mysql.jdbc.Driver is to be found. Compiling the code went well, running it resulted in Exception: Failure to instantiate DB Driver:MySQL java.lang.NullPointerException. So, I droppt the ikvm developers a line… awaiting an answer. Hang on for updates

UPDATE 1: With the devine intervention of “reinstall and configure your tool chain” I did that, currently running:

goern@node-236:~/src/mono/ARQ-1.2$ ikvm -version
CLR version: 1.1.4322.2032 (32 bit)
System: 1.0.5000.0
IKVM.Runtime: 0.22.0.0
IKVM.GNU.Classpath: 0.22.0.0
ikvm: 0.22.0.0
mscorlib: 1.0.5000.0
GNU Classpath version: 0.19
goern@node-236:~/src/mono/ARQ-1.2$ mono --version
Mono JIT compiler version 1.1.13.1, (C) 2002-2005 Novell, Inc and Contributors. www.mono-project.com
        TLS:           __thread
        GC:            Included Boehm (with typed GC)
        SIGSEGV      : normal

Redoing the build process I got the ARQ and MySql .dlls and my binary, compiled just fine and runs fine. JDBC Connection is opned up, Jena Model gets opened and all the content dumped to Console. Having all the good tools in place two point araise:

1. Determining the Language you use is hard! C# just looks like Java to me at the moment:

using System;
using com.hp.hpl.jena.rdf.model;
using com.hp.hpl.jena.db;

public class hodge {
   public static void Main() {
           IDBConnection idbcon = null;
           ModelMaker maker = null;
           Model model = null;

           System.Activator.CreateInstance("mysql32alpha",
            "com.mysql.jdbc.Driver");

           idbcon = new  DBConnection("jdbc:mysql://server/jena23", 
            "user", "pass", "MySQL");
           if (idbcon == null)
                   Console.WriteLine("no IDBConnection");

           try {
                   maker = ModelFactory.createModelRDBMaker(idbcon);
                   model = maker.openModel("pim");
           } catch (Exception e) {
                   Console.WriteLine("Exception: " + e.Message);
           }

           Console.WriteLine(model); // model.write(System.out);
   }
}

2. C# and Mono world seems to be open for Jena.

PS: I have attached a distribution that contains a nant build file for the tasks above and the source code, just configure at top of build.build.

PPS: I have not tested this under some MS Windows.

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 :)

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

TODO: write documentation.

• Tagback: Joining the Folksonomy Fray
• Open Tags: Made For A Distributed World
• Understanding true decentralisation – the microformat model

• lost boy’s entry
• Jon Udell I
• Jon Udell II

1. Norman has chosen the wrong name for the service and it must be named “Where in the World was”, or
2. some enhancements must be introduced.

I have chosen the second option for now and would like to introduce “Where in the World”/goes/goern. This means I would like to see a webservice which will return information about where I will be in some amount of time. The interface should be something like .../witw/goes/goern?in=2 and the unit for in would be days.

Some XML as proposed by Norman is good and in addition to that a XSLT style sheet to output (RDF)iCal would be great.

After a few webpage readings I came up with “Wo in der Welt?” aka widw… a little python script picking up the current WITW info of a given user. As worldly wisdom showed once again brute force and ignorance helps! My next idea was to fetch the atom feed and push updates of locations into jabber. Unfortunatly the atom feed doesnt seem to be a Atom 0.3 feed, I “filed this bug”… so stay tuned for another step forward to my personal vision of an information desktop…

• Geo 1.0α plugin is WORKING
• FOAF Output 1.16RC is WORKING
• FOAF Output seeAlso’s 1.1 is WORKING
• FOAF Output Semantic Visits 1.2 is WORKING
• Kitten’s Spaminator 1.0rc7 seems to be WORKING but not tested with real world spammers

The third step was a test upgrade of the database, all went ok with the wp-admin/upgrade.php, even the enclosures have been preserved. Afterwards I replaced wp-rdf.php with my own enhanced version.

It looks like everything is prepared to move to WordPress 1.5, some little design work to do on the new templates left…