UseCase: NegotiateAccessToResource

PrimaryActor:

Gatekeeper daemon for a data-resource.

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OtherActors:

User of the VO.

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EndResult:

Gatekeeper has a yes/no answer to whether User should be allowed the requested access to the resource.

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Subsidiary use-cases:

AuthenticateIdentity and DetermineAuthority

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PreConditions:

See preconditions in subsidiary cases.

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FlowOfEvents:

1. The actors perform the use-case AuthenticateIdentity.
2. Authentication is successful; Gatekeeper accepts User's identity.
3. The actors perform the use-case DetermineAuthority.

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PostCondition:

Gatekeeper knows whether User is entitles to the requested access.

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BasicAssumptions:

See assumptions for subsidiary use-cases.

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AlternativeFlows:

If authentication fails, the actors don't bother with DetermineAuthority.

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Links to ScienceProblems:

type here

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KeyReferences:

type here

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Please also see the sequence diagram for this case:

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GoodStyle: Please add comments below. This area should be used for refinement of the above document. If you want to ask questions or start a dialogue with the author, please use (or create) a topic in the Use Cases Forum.
Author: Once the refinements here and comments in the forum die down, perhaps you could rewrite the problem, incorporating the comments and refinements.

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-- GuyRixon - 08 Feb 2002