...
‡ Further research is needed to figure out the semantics of a ModeShape move operation and how policies shall be enforced.
RDF Predicates as Dynamic Resource Attributes
There are many RDF predicates that are available in the graph for Fedora objects and datastreams. These include numerous properties like mime-type, datastream size, and even checksum. Without trying to predict which of these will be useful in policies, Fedora XACML can reference any predicate URI as a resource attribute ID.
Here are some examples of these resource attributes:
| ID | Data Type | Source | In Request? | Notes |
|---|---|---|---|---|
| ?? | String | ModeShape property (via RDF property) | No |
Environment Attributes
| ID | Data Type | Source | In Request? | Notes |
|---|---|---|---|---|
urn:oasis:names:tc:xacml:1.0:environment:current-time | time | AuthZ Delegate | Yes | |
urn:oasis:names:tc:xacml:1.0:environment:current-date | date | AuthZ Delegate | Yes | |
urn:oasis:names:tc:xacml:1.0:environment:current-dateTime | dateTime | AuthZ Delegate | Yes |