[DAIS-WG] OGSA-DAI 4.0 released

Mike Jackson michaelj at epcc.ed.ac.uk
Fri Apr 9 11:34:44 CDT 2010

Hi there,

The OGSA-DAI project have released version 4.0 of their database
access and integration software.

OGSA-DAI is a customisable framework for the management of distributed
data resources - whether these be databases, files or other types of
data - via web services. OGSA-DAI provides a workflow engine for the
execution of data access, update, transformation, federation and
delivery scenarios. It also provides a powerful distributed query
processor allowing SQL queries to be targeted across distributed

The main features of OGSA-DAI 4.0 are:

-OGSA-DAI SQL views components, which allow views to be defined over
  read-only databases, previously released in December 2008, have
  been refactored and fully-integrated.
-Generic activities, contributed by the ADMIRE project. These allow
  clients to do joins or transform a stream of tuples using a script
  (written in JavaScript or another scripting language) that they
  submit to the server with their workflow. 
-JDBC-based relational resources now support connection pooling using
  the Apache Commons DBCP package. 
-Data sink and data source operations now support sequence
  numbers. This allows clients to resynchronize with a server in the
  event of a network outage. 
-Data sinks and sources now support non-blocking read and write
-A trace facility to view the execution of an OGSA-DAI workflow via a
  JSP page.
-A web server file caching activity that streams data into a server
  file and a RESTful interface to allow access to these files. 
-Example activities and supporting classes to convert OGSA-DAI
  tuples into KML (Keyhole Markup Language) documents.
-Configuration and deployment changes to make it easier to express
  complex configuration requirements and copy configurations across
-OGSA-DAI now compiles and runs under Java 1.6. 
-Numerous bug fixes have been applied.

OGSA-DAI is a free, open source, 100% Java product and is released
under the Apache 2.0 licence. Downloads compatible with Apache Axis
1.4 and Globus 4.2.0, are available at


OGSA-DAI's user doc is at


and the release notes at


To find out more about OGSA-DAI visit our project WWW site at


and our open source project site at




On behalf of the OGSA-DAI team.

Dr. Michael (Mike) Jackson      E-mail: m.jackson at epcc.ed.ac.uk
OGSA-DAI project                EPCC
WWW: http://www.ogsadai.org.uk  WWW:  http://www.epcc.ed.ac.uk

The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.

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