Have created the Sequence diagram using ArgoUML and exported it as XMI. I need to identify the class,function and their relationships by parsing the XMI. I can able to parse the class and their corresponding operation and attribute as explained in http://www.ibm.com/developerworks/library/x-wxxm24/#resources
Can any one help me in parsing the association role and classifier role in order to obtain their relationship?
The main thing that you need to know is that it's UML 1.4/1.5 serialized using XMI 1.2. ArgoUML uses the NetBeans UML/XMI support for writing these files, but it's been long since retired.
Good luck!