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− | == Introduction ==
| + | #REDIRECT [[ContextId]] |
− | This page describes the Higgins [[ContextIdDatatype]] [[Attribute Value Datatype]]
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− | == Definition ==
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− | * A [[ContextIdDatatype]] MUST conform to the ABNF defined below.
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− | == Syntax ==
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− | The following [http://en.wikipedia.org/wiki/Augmented_Backus-Naur_form ABNF] defines a Higgins [[ContextId]]. All rules not defined in this ABNF are defined in the [http://wiki.oasis-open.org/xri/XriCd02/Xri2dot0Abnf ABNF for XRI 2.0] (which includes the IRI ABNF from [http://www.ietf.org/rfc/rfc3987.txt RFC 3987]) except:
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− | * '''xri2-authority''' and '''xri2-subseg''' are the '''xri-authority''' and '''xri-subset''' rules defined in the [http://wiki.oasis-open.org/xri/XriCd02/Xri2dot0Abnf ABNF for XRI 2.0]
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− | * '''xri3-authority''' and '''xri3-subseg''' are the '''xri-authority''' and '''xri-subset''' rules defined in the [http://wiki.oasis-open.org/xri/XriThree/SyntaxAbnf proposed ABNF for XRI 3.0]
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− | <pre>
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− | contextId = contextURI / contextXRI
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− | contextURI = contextfileURI / contexthttpURI
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− | contextfileURI = [ "file://" ] ipath-abempty descriptor-ext
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− | descriptor-ext = ".xrds" / ".xdi" ;see note 1
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− | contexthttpURI = ( "http://" / "https://" ) iauthority
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− | ipath-abempty [ descriptor-ext ] [ "?" iquery ]
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− | contextXRI = contextQXRI / ;see note 2
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− | contextHXRI ;see note 3
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− | contextQXRI = ( [ "xri://" ] xri2-contextQXRI ) /
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− | ( [ "xri:" ] xri3-contextQXRI )
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− | xri2-contextQXRI = xri2-authority [ "/($context)" *xri2-subseg ]
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− | xri3-contextQXRI = xri3-authority [ "/$context" *xri3-subseg ]
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− | contextHXRI = proxy-URI "/" (xri2-contextQXRI / xri3-contextQXRI )
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− | proxy-URI = ( "http://" / "https://" ) proxy-reg-name
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− | proxy-reg-name = "xri." ireg-name
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− | </pre>
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− | | + | |
− | Notes:
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− | # ".xrds" and ".xdi" are formats designed expressly for discovery and description of resources using HTTP(S) URIs and/or XRIs. XRDS format is defined by [http://www.oasis-open.org/committees/download.php/24286/xri-resolution-v2.0-wd-11-ed-02.doc XRI Resolution Working 2.0]. XDI format is being defined by the [http://www.oasis-open.org/committees/xdi OASIS XDI Technical Committee]. Other resource description file types can be supported by extending this ABNF rule. | + | |
− | # QXRI (Query XRI) is an XRI in URI-normal form without the "xri://" prefix (XRI 2.0) or "xri:" prefix (XRI 3.0). See Section 11.2 of [http://docs.oasis-open.org/xri/2.0/specs/cd02/xri-resolution-V2.0-cd-02.pdf XRI Resolution 2.0].
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− | # HXRI (HTTP(S) XRI) is the format for encapsulating an XRI within an HTTP(S) URI for purposes of resolution by an XRI proxy resolver. See Section 6 of [http://docs.oasis-open.org/xri/2.0/specs/cd02/xri-resolution-V2.0-cd-02.pdf XRI Resolution 2.0].
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− | == See Also ==
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− | * [[ContextId]]
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