Re: [regrep-comment] Comment about ebRIM, section 7.4.2

[Farrukh Najmi <farrukh@wellfleetsoftware.com>]

Hi Andreas,

Here is the replacement text for ebRIM 3.0.2. Please take a quick look 
and comment if this is a good fix.
If not, please suggest alternative text. Thanks.


      Attribute queryLanguage

The queryLanguage attribute specifies the query language that the query 
expression conforms to. The value of this attribute MUST be a reference 
to a ClassificationNode within the canonical QueryLanguage 
ClassificationScheme. All query languages supported by a Registry MUST 
be declared as a ClassificationNode within the canonical QueryLanguage 
ClassificationScheme. A Registry MAY implement a subset of the query 
languages defined within the canonical QueryLanguage 
ClassificationScheme as dictated by the conformance profile implemented 
by the registry. The canonical QueryLanguage ClassificationScheme MAY 
easily be extended by adding additional ClassificationNodes to it to 
allow a registry to support additional query language syntaxes.


Farrukh Najmi wrote:
> Hi Andreas,
>
> The intent of the specs was to state that:
>
>    * Filter queries MUST be supported as described by ebRS
>    * SQL Queries MAY be supported as described by ebRS
>    * Any other query syntax MAY be supported as long as it is declared
>      in the canonical QueryLanguage ClassificationScheme
>
>
> Clearly the spec is not clear in Section 7.4.2 of ebRIM. We will 
> consider this a minor spec bug and fix it in our next revision.
>
> Thanks for pointing out this seeming contradiction and lack of clarity.
>
>
> Andreas Veithen wrote:
>> Section 7.4.2 of ebRIM (version 3.0.1-cd3) specifies that "A Registry
>> MUST support the query languages as defined by the canonical
>> QueryLanguage ClassificationScheme." The current version of the
>> relevant canonical classification scheme defines four query languages
>> (SQL, Filter query, XQuery and XPath), only two of which are actually
>> defined in ebRS: SQL and Filter query. Also, section 6.4 of ebRS
>> (version 3.0.1-cd4) specifies that "An ebXML Registry MAY support SQL
>> as a supported query syntax within the <rim:queryExpression> element
>> of AdhocQueryRequest." Only Filter query is declared mandatory by
>> ebRS. Thus, there is a contradiction between ebRIM and ebRS, unless
>> the verb "support" in above citation from ebRIM is to be interpreted
>> in a restricted way (e.g. support to store ad hoc queries in the
>> registry). Could you clarify this issue?
>>
>> Best regards,
>>
>> Andreas Veithen
>>
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>
>
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-- 
Regards,
Farrukh

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