Overview

The Gazelle project develops External Validation Services. The purpose of such a tool is to offer to application developers with a service to validate the messages and documents their systems produce.

Today we have validation services for :

• HL7v2 messages used by IHE 
• some HL7V3 messages used in the context of IHE or epSOS
• CDA documents used in the context of IHE or epSOS
• SAML assertion used in the context of epSOS
• ATNA log messages as used by epSOS
• Certificates validation as used by epSOS or IHE
• Dicom validation using David Clunie dciodvfy tool.
• XDW Validation, used in the context IHE

HL7v2 message validation is done using what we call "message profiles", the ones are available through the web service InriaHL7MessageProfileRepository. Concerning the other kinds of messages, documents and assertions, we use a validation based on schematrons. An application named Schematron-based Validator has been developed and gathers all the schematrons writen by the team together with a web service to validate documents.

All validation services offer a webservice interface. We have however developed a common front end to the external validation services. The front end is called the "EVSClient" and is accessible there