Eduardo Pelegri-Llopart's Blog

Using JAXP 1.3; even in older JVMs!

JAXP 1.3 is in Tiger. The latest release of the Java API for XML processing includes support for all the latest versions of your favorite standards (DOM level 3, SAX 2, XML 1.1), the old goodies (Namespaces, XSLT 1.0, XPath 1.0, XML Schema), and some new standards (XInclude). It includes some very useful new APIs including a validation API that can be used to preparse an schema for performance. The validation API can support multiple validators, so it can support, for example, Relax NG. JAXP 1.3 also includes a new API for XPath manipulation, and other goodies.

Jeff, Ramesh and Bhakti gave a good overview of JAXP 1.3 at JavaOne this year. A PDF of the presentation is available for free at JavaOne Online. JavaOne Online also has available the transcript and voice recording of many (all?) presentations, since I expected significant interest, I asked them to make this session free. You may want to check it out; it uses a flash client and it is quite cool.

The spec itself was written by Jeff, Norm and Kohsuke with help from all the JSR-206 crowd and it is available at the JCP site. Jeff insisted in writing it in XML and automatically generate PDF and HTML from it. Unfortunately there seems to be something somewhat broken with the download page for the official final spec, but the proposed final draft 2 is available and my recollection is that it was pretty much the same as the final. Use that while I track down the problem.

Now, how do get your hands on an implementation of JAXP 1.3? The easiest way is to just download Tiger, J2SE 1.5. But if you need to use an older JVM like 1.3 or 1.4, you will need an unbundled implementation. We just released one at Java.Net. It based on the same code base as the Tiger implementation, including the high-performance XSLTC compiler. As with previous versions of JAXP, we are cooperating with ASF and the code will eventually make it back to xerces and xalan, but you don't have to wait to use it!

Enjoy, and start collecting ideas for JAXP 1,4, which will be part of Mustang.

Comments

• The only build currently available from jaxp.dev.java.net is dated 20050614. This build seems to have been compiled with JDK 5 without using the target VM option, and thus does not run under JDK 1.4.

  Can you make available an unbundled version that can be used under 1.4?

  Posted by: rocketraman on June 21, 2005 at 08:23 AM

• Thanks.

  I passed this on to the team yesterday, but, could you file an issue report just so it is recorded?

  Posted by: pelegri on June 21, 2005 at 08:46 AM

• Looks like Neeraj just posted JAXP_RI_20050622 to the jaxp site -- I tested it and it works fine!

  Tell the team thanks!

  Posted by: rocketraman on June 21, 2005 at 01:07 PM

• Sure thing! Thanks for reporting the problem and sorry for the inconvenience...

  Posted by: pelegri on June 21, 2005 at 01:20 PM

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