According to XACML 2.0 Spec, Chapter 10.2.5, the attributes
MUST be supplied by the context handler if not already present.
For HERAS-AF this means the SimplePDP must create the above mentioned attributes if they are not present and enrich the given RequestType.
Please review the attached patch for this issue. It modifies the RequestType so that the attributes for time/date/dateTime are only added if they do not already exist. The SimplePDP calls this functionality per request. A test is also added.