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Difference between revisions of "ContextId"
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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). | * A given [[ContextRef]] may be used against multiple [[Context Provider]]s to produce the same [[Context]] (although, as mentioned, different IContext instances). | ||
* [[ContextRef]]s MAY be XRIs | * [[ContextRef]]s MAY be XRIs | ||
| − | * [[ContextRef]]s MUST be subdivideable by "/" (e.g. to allow constructing through the following possible kind of concatenation: <contextRef-root>/<schemaType>/<object-identifier> | + | * [[ContextRef]]s MUST be subdivideable by "/" (e.g. to allow constructing through the following possible kind of concatenation: <contextRef-root>/<schemaType>/<object-identifier>) |
* ContextRefs are used by the [[Identity Attribute Service (IdAS)]] and its [[Context Provider]]s | * ContextRefs are used by the [[Identity Attribute Service (IdAS)]] and its [[Context Provider]]s | ||
Revision as of 02:04, 14 December 2006
- A ContextRef is a URI that identifies a Context.
- ContextRefs either directly or indirectly (e.g. by conventions, lookups, etc.) provide sufficient information to identify a Context
- Two different ContextRefs may refer to the same Context
- If two ContextRefs are equal, they refer to the same Context dataset, although not necessarily the same Context "container" instance
- A given ContextRef may be used against multiple Context Providers to produce the same Context (although, as mentioned, different IContext instances).
- ContextRefs MAY be XRIs
- ContextRefs MUST be subdivideable by "/" (e.g. to allow constructing through the following possible kind of concatenation: <contextRef-root>/<schemaType>/<object-identifier>)
- ContextRefs are used by the Identity Attribute Service (IdAS) and its Context Providers
Examples
- http://www.fabrikam123.example/4f544/ldap347/HR/employees --an LDAP employee directory
- proprietary-scheme-a://contactlist -- user's contact list stored as tab-delimited file
- xri://foo*bar/baz
Open issues
- Do we need a method in IdAS to test that two given ContextRefs actually resolve to the same Context?