Dart2Summary
Contents
Description
DART2 is a ground up re-write of the DART server. Some very different design critera are being used for DART2, some of which are described in this document. DART2 is currently being designed and implemented as part of NAMIC's Core 2 Engineering activities. A progress report was given at the 2006 NAMIC All Hands Meeting in Salt Lake City.
Documentation, Resources & Plans
This page serves as the main Dart home page. Most questions can be answered in the Dart manual, if not, please see the Dart mailing list.
Currently, Dart is being used for the Slicer3 dashboard. Over the upcoming months, Dart will be adapted and "hardened" for the enterprise environment. This mainly consists of using MySQL rather than Derby. MySQL is highly scalable with mature management tools, mitigating a point of failure for Dart (though Derby performs wonderfully for most applications).
Releases
Release 1.0.7 (June 20, 2006)
Dart1.0.7.zip or Dart1.0.7.tar.gz
For JDK 1.4
Dart1.0.7-jdk1.4.zip or Dart1.0.7-jdk1.4.tar.gz
This release fixes several resource exhaustion bugs, and includes an (untested) HTTP PUT method for submission. Please download and update any existing Dart servers.
Previous Releases
Release 1.0.0 (May 4, 2006)
Dart1.0.0.zip or Dart1.0.0.tar.gz
Release 1.0.0-rc1 (April 28, 2006)
Dart1.0.0-rc1.zip or Dart1.0.0-rc1.tar.gz
Release 0.8.5 (March 25, 2006)
Dart0.8.5.tar.gz or Dart0.8.5.zip
Note: Please see upgrade instructions in the Dart.pdf file.
Release 0.6.0 (September 27, 2005)
Dart0.6.0.tar.gz or Dart0.6.0.zip
Release 0.5 (September 7, 2005)
Release 0.4 (September 7, 2005)
Note: The 0.5 and later releases are not backwards compatable w/0.4. If you have been building Dart from the source and would like to migrate, please see the instructions in the manual or look here. With the exceptions of extreme database schema changes, newer versions of Dart should have a straightforward migration path.
Source code
The Source code for Dart2 is current under the Subversion revision control system (homepage), and may be browsed or checked out:
svn co http://svn.na-mic.org:8000/svn/Dart/trunk Dart
Status
The current plan is that DART2 will be written in the single language Java. Besides its simplicity and portability, Java provides many different packages dedicated to particular programming tasks. Some of the packages used in DART2 are described here including accompaning descriptions and licenses.
| Package Name | Description | License |
|---|---|---|
| Enterprise scheduler, has features similar to cron | BSD-like | |
| XMLRPC implementation, integrates with servlet engines | Apache | |
| Part of the Apache Jakarta Commons project. Converts XML to Java objects | Apache | |
| Command line processing | Apache | |
| Template engine, provides HTML generation from Java objects | BSD-like | |
| Object-Relational bridge. Generates objects that are dynamically mapped to RDBMS | BSD | |
| Very flexible logging system | Apache | |
| Embedded RDBMS donated to Apache by IBM. Formely known as Cloudscape | Apache | |
| Excellent unit testing framework. All Dart2 Server tests use JUnit | Common Public License | |
| DB Connection pooling library, helps manage server resources. | Apache | |
| Manipulate files in the file system, JAR files, FTP, etc... uniformly and transparently. | Apache | |
| An embeddable servlet and web server engine | Apache | |
| Where would we be without Ant? Ant is a Java version of Make. | Apache | |
| Charting tools accessible via a servlet | GNU Lesser General Public License |
