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Difference between revisions of "ContextId"

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* A [[ContextRef]] is a URI that identifies a [[Context]].
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[[Image:Higgins_logo_76Wx100H.jpg|right]]
* [[ContextRef]]s either directly or indirectly (e.g. by conventions, lookups, etc.) provide sufficient information to identify a [[Context]]  
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== Version ==
* Two different [[ContextRef]]s may refer to the same [[Context]]
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This page describes the concept of a [[ContextId]] as used in [[Context Data Model 2.0]].
* If two [[ContextRef]]s are equal, they refer to the same Context dataset, although not necessarily the same [[Context]] "container" instance
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* A given [[ContextRef]] may be used against multiple [[Context Provider]]s to produce the same [[Context]] (although, as mentioned, different IContext instances).
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* [[ContextRef]]s MAY be XRIs
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* [[ContextRef]]s MUST be subdivideable by "/" (e.g. to allow constructing through the following possible kind of concatenation: <contextRef-root>/<schemaType>/<object-identifier>
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* ContextRefs are used by the [[Identity Attribute Service (IdAS)]] and its [[Context Provider]]s
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==Examples==
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== Definition ==
# http://www.fabrikam123.example/4f544/ldap347/HR/employees --an LDAP employee directory
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* An identifier of a [[Context]]
# proprietary-scheme-a://contactlist  -- user's contact list stored as tab-delimited file
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* A ''Context UDI'' as defined in [http://www.azigo.com/udi/udi-syntax.html UDI Syntax]
# xri://foo*bar/baz
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==Open issues==
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[[Category:Context Data Model 2.0]]
# Do we need a method in IdAS to test that two given ContextRefs actually resolve to the same [[Context]]?
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==See Also==
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* [http://eclipse.org/higgins Higgins Home]
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* [Higgins Wiki]
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* [Concepts]
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Latest revision as of 11:35, 31 May 2021

Higgins logo 76Wx100H.jpg

Version

This page describes the concept of a ContextId as used in Context Data Model 2.0.

Definition

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