1. Amy Krause Applications Consultant, EPCC a.krause@epcc.ed.ac.uk Extending OGSA-DAI Principles and Architectures for Structured Data Integration: OGSA-DAI as an example ISSGC06 (Ischia, Italy) 17 July 2006

2. ISSGC06, Ischia, Italy2 Outline Extensibility Points An Example

3. 17 July 2006ISSGC06, Ischia, Italy3 Extensibility Points Extensibility points in OGSA-DAI can be used to implement very powerful additions –Activity Framework –Data Resource Accessors –Activity and Resource Authorization –Role Mapping Allow applications to be tailored for specific tasks

4. 17 July 2006ISSGC06, Ischia, Italy4 Extensibility Points DB connection role data query perform document response document element credentials Query Activity WebRowSet Activity Delivery Activity Data Resource Accessor Role Mapper Activity Engine connection Session ID Activity Request Activity Authorisation credentials element credentials data

5. 17 July 2006ISSGC06, Ischia, Italy5 An Example perform document response document element Activity Engine Session ID Activity Request Activity Authorisation credentials Sensor

6. 17 July 2006ISSGC06, Ischia, Italy6 Build a Data Resource Accessor perform document response document element Activity Engine Session ID Activity Request Activity Authorisation credentials Data Resource Accessor Sensor getTemperaturevalue

7. 17 July 2006ISSGC06, Ischia, Italy7 Implement an Activity perform document response document element Activity Engine Session ID Activity Request Activity Authorisation credentials data Data Resource Accessor Sensor getTemperaturevalue Temperature Activity element

8. 17 July 2006ISSGC06, Ischia, Italy8 Build your own role mapper perform document response document element Activity Engine Session ID Activity Request Activity Authorisation credentials data Data Resource Accessor Sensor getTemperaturevalue Temperature Activity element role Role Mapper credentials

9. 17 July 2006ISSGC06, Ischia, Italy9 Questions What are YOUR application requirements? ?