Sunday  2002-06-30   Software

IETF's guideline on XML

"Guidelines for the Use of XML within IETF Protocols" is currently in draft stage but it is still useful for XML application developers.

The guideline can be summarized as "keep it simple, stupid" or KISS. Avoid processing instructions, entity declarations and references; be careful with namespaces; beware of whitespaces; think twice before using attributes or even worse their default values, and so on.

When will W3C provide a guideline on what processing XML means?

Sunday  2002-06-30   Software

eclectic - the XML-DEV weblog

Because XML digerati are rather loquacious, mere mortals are indebted to Leigh Dodds' "eclectic", the XML-DEV weblog for summary. Many links to XML issues that appear in short notes on 2002-07-01 come from "eclectic" and many articles by him and others from xml.com.

Thursday  2002-06-27   Web of Services

Cult of Google

Google Weblog has many interesting tidbits including screenshots of Google on original web browsers.

Even more minimalistic google page

Thursday  2002-06-27   Web of Services

Glue, Gaia, and the services grid

Glue, Gaia, and the services grid - Jon Udell's short summary on this topic as well as snippets of conversation with Graham Glass.

See also Graham Glass on Gaia vs Jini.

Wednesday  2002-06-19   Development

Macromedia Blueprint Application Center : Pet Market.

From mesh on MX

Macromedia has released the Macromedia MX Pet Market Blueprint Application and Center. The Pet Market Blueprint application is an online store for a fictional pet retailer similar to the Java™ Pet Store released by Sun and the Microsoft .NET Pet Shop.

Tuesday  2002-06-18   Development

JXPath - XPath for Java

From Jakarta page on JXPath:

JXPath applies XPath expressions to graphs of objects of all kinds: JavaBeans, Maps, Servlet contexts, DOM etc, including mixtures thereof.

Consider this example:

Address address = (Address)JXPathContext.newContext(vendor).
         getValue("locations[address/zipCode='90210']/address");

This XPath expression is equvalent to the following Java code:

Address address = null;
Collection locations = vendor.getLocations();
Iterator it = locations.iterator();
while (it.hasNext()){
    Location location = (Location)it.next();
    String zipCode = location.getAddress().getZipCode();
    if (zipCode.equals("90210")){
      address = location.getAddress();
      break;
    }
}

NB JXPath is a subset of Jex API.
 
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Tuesday  2002-06-11   Policy, Process, Mechanism

Knowledge Management 101

IBM Systems Journal Vol. 40, No 4, 2001 is dedicated to knowledge management. A few overview papers are especially interesting:

• Where did knowledge management come from? by Prusak
• Views of knowledge are human views by Dueck