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TX: CodeSystem permission-rule-combining

Properties

Profile http://hl7.org/fhir/StructureDefinition/shareablecodesystem
Defining URL http://hl7.org/fhir/permission-rule-combining
Version 5.0.0
Name PermissionRuleCombining
Title Permission Rule Combining
Status active
Definition

Codes identifying the rule combining. See XACML Combining algorithms http://docs.oasis-open.org/xacml/3.0/xacml-3.0-core-spec-cos01-en.html
Publisher HL7 (FHIR Project)
Committee sec

This case-sensitive code system http://hl7.org/fhir/permission-rule-combining defines the following codes:

Code Display Definition
deny-overrides Deny-overrides The deny overrides combining algorithm is intended for those cases where a deny decision should have priority over a permit decision.
permit-overrides Permit-overrides The permit overrides combining algorithm is intended for those cases where a permit decision should have priority over a deny decision.
ordered-deny-overrides Ordered-deny-overrides The behavior of this algorithm is identical to that of the “Deny-overrides” rule-combining algorithm with one exception. The order in which the collection of rules is evaluated SHALL match the order as listed in the permission.
ordered-permit-overrides Ordered-permit-overrides The behavior of this algorithm is identical to that of the “Permit-overrides” rule-combining algorithm with one exception. The order in which the collection of rules is evaluated SHALL match the order as listed in the permission.
deny-unless-permit Deny-unless-permit The “Deny-unless-permit” combining algorithm is intended for those cases where a permit decision should have priority over a deny decision, and an “Indeterminate” or “NotApplicable” must never be the result. It is particularly useful at the top level in a policy structure to ensure that a PDP will always return a definite “Permit” or “Deny” result.
permit-unless-deny Permit-unless-deny The “Permit-unless-deny” combining algorithm is intended for those cases where a deny decision should have priority over a permit decision, and an “Indeterminate” or “NotApplicable” must never be the result. It is particularly useful at the top level in a policy structure to ensure that a PDP will always return a definite “Permit” or “Deny” result. This algorithm has the following behavior.