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| − | {{#eclipseproject:technology.higgins}}
| + | #REDIRECT [[ContextId]] |
| − | == Version ==
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| − | This page describes the Higgins [[ContextId Data Range]] [[UDI]] used in the [[Higgins Global Graph 1.1]].
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| − | == Definition ==
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| − | * A [[Context UDI]] is a kind of URI [[Data Range]]
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| − | * The value of a [[Context UDI]] UDI identifies a [[Context]]
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| − | * The value of a [[Context UDI]] MUST conform to the ABNF defined below
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| − | == Definition ==
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| − | * An [[Context UDI]] is defined in [http://www.parity.com/spec/udi/udi-syntax.html UDI Syntax]
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| − | == Relationship to OpenID ==
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| − | Any OpenID 2.0 identifier as defined by [http://openid.net/specs/openid-authentication-2_0.html OpenID Authentication 2.0] may function as a Higgins [[ContextId]]. OpenID 2.0 supports both URLs and XRIs. All of the examples of contexthttpURI and contextXRI above are valid OpenID 2.0 identifiers.
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| − | The only caveat to keep in mind is that if an OpenID 2.0 URL is used as a Higgins [[ContextId]], the XRDS or XDI document to which it resolves must EITHER contain:
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| − | * Only one XRDS service endpoint or XDI context reference describing the target [[Context]], OR
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| − | * The consuming application must know how to select the XRDS service endpoint or XDI context descriptor it requires (i.e., it must know which Higgins [[Context Type]] it is seeking).
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| − | == Used as a Value Data Range By ==
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| − | * [[ContextId]]
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| − | == See Also ==
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| − | * [[ContextId]]
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| − | * [[Context Relation]]
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| − | * [[Context Correlation]]
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| − | * [[EntityId Data Range]]
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