XXL is a Java library that contains a rich infrastructure for implementing advanced query processing functionality. The library offers low-level components like access to raw disks as well as high-level ones like a query optimizer. On the intermediate levels, XXL provides a demand-driven cursor algebra, a framework for indexing and a powerful package for supporting aggregation. The XXL project provides various packages. See the longer introduction to XXL for an explanation of the packages. The library is publicly available under GNU LGPL and comes with a full documentation.
| May 2004 |
Version 1.0 of XXL released!
We proudly present version 1.0 of XXL including
much more functionality, a full documentation as well as many use-cases.
|
| November 2004 |
Version 1.1 Beta 2 of XXL released!
Our latest release includes several extensions for
PIPES and several bug-fixes for B+-Trees.
Visit the Download page for more details.
|
| Dezember 2004 |
Online demo of PIPES available!
Start our online demo of PIPES and execute continuous queries over data streams
in traffic management as well as in an online auction.
Visit the PIPES page for more details.
|
| January 2005 |
Online version of XXL-Viewer available!
Experience the rich functionality of XXL with the XXL-Viewer, a powerful tool for visual java programming.
Visit the XXL page for more details.
|
| March 2006 |
Version 1.1 Beta 3 of XXL released!
Our latest release provides major changes to PIPES plus new functionality
including metadata management, heartbeats, plan migration, CQL parsing, etc.
Furthermore, it contains extensions and bug-fixes for several classes in XXL.
Visit the Download page for more details.
|
|
The XXL-Viewer offers an intuitive way of visual Java programming. We already presented this powerful tool at the SIGMOD conference 2004. Feel free to start our online version. In order to become familiar with the XXL-Viewer, read our tutorial (soon also available in english) that describes the basic steps. Since our library XXL is completely developed in Java, the XXL-Viewer provides an easy access to the functionality of XXL. Just add xxl.jar to the classpath by calling "Add jar" in the explorer of the XXL-Viewer and you can explore XXL. In order to get familiar with the XXL-Viewer, examine a simple awt example by opening this file with the XXL-Viewer. A more complex example modeling a continuous query over traffic data is illustrated here. Note that running the XXL-Viewer requires Java Web Start. |
 |
Faculty:
Prof. Dr. Bernhard
Seeger
| Graduate: | Undergraduate: | Alumni: |
| Michael Cammert | Martin Ander | Björn Blohsfeld, T-Systems |
| Evangelos Dellis | Kay Bürger | Jochen van den Bercken, IXOS AG |
| Christoph Heinz | Tim Dörnemann | Jens-Peter Dittrich, SAP AG |
| Jürgen Krämer | Maxim Schwarzkopf | |
| Tobias Riemenschneider | Sonny Vaupel | |
| Martin Schneider | ||
| Akrivi Vlachou | ||
| Ilya Vladimirskiy |
For support and questions feel free to send us an e-mail: request@xxl-library.de.
If you want to be informed on new versions of XXL you can subscribe to our
mailing-list.
Send an email to xxl-request@lists.uni-marburg.de without subject and the word
"subscribe" in the message body.