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   Re: Any XQL query engine for DOM in Java

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  • From: "Ingo Macherius" <macherius@darmstadt.gmd.de>
  • To: "Prakash Mandgi" <pmandgi@hotmail.com>
  • Date: Wed, 18 Aug 1999 01:04:15 +0200

Prakash Mandgi <pmandgi@hotmail.com> wrote at 17 Aug 99, 16:20:

>     I am looking for an XQL query engine for DOM objects in Java. If =
> there are such free implementations
> please let me know about it. I will post a summary of the results

The complete list of XQL implementations is at [1]. 

Two of those are in Java, Ed Howland's OpenXQL [2] and our GMD-IPSI 
engine [3]. The latter is offered in an improved, commericalized 
version by Globit GmbH [4].

A bit on cons and pros.

OpenXQL is a newcomer and not yet fully a fully blown implementation. 
A big pro is its strong bias towards the open source movement.

The GMD-IPSI engine is around for more then half a year and has been 
downloaded hundreds of times. As a big pro it can deal with documents 
larger then main memory by using a persistent DOM store. It has, 
however, not been updated for a while because of the 

Finally, the Globit product is the GMD-IPSI engine plus some 
additional months of development. It also offers extended features, 
see [5]. We believe it will be the first engine to support the 
upcoming XQL99 standard. The con is the price, starting from Euro 100 
(personal version) to Euro 1500 (server license per CPU).


[1] http://metalab.unc.edu/xql/
[2] http://www.openxql.org/
[3] http://xml.darmstadt.gmd.de/xql/
[4] http://www.globit.com/infonyte.htm
[5] http://xml.darmstadt.gmd.de/xql/extensions/

Ingo Macherius//Dolivostrasse 15//D-64293 Darmstadt//+49-6151-869-882
GMD-IPSI German National Research Center for Information Technology
mailto:macherius@gmd.de http://www.darmstadt.gmd.de/~inim/
Information!=Knowledge!=Wisdom!=Truth!=Beauty!=Love!=Music==BEST (Zappa)

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