Mr. Ferro - thank you for catching this error in the XCQL schema. It has now been corrected. Ray Denenberg

From: Nicola Ferro [mailto:fer...@dei.unipd.it] Sent: Wednesday, November 03, 2010 2:49 PM To: sear...@lists.oasis-open.org Subject: [search-ws-comment] XCQL Schema: mandatory sortKeys element

Dear All,

I would like to point to your attention a probable inconsistence between the CQL draft specification and the XCQL XSchema.

In the XCQL Xschema of June 16, 2010 at

http://www.loc.gov/standards/sru/oasis/schemas/xcql.xsd

the sortKeys element is mandatory:

<xs:complexType name="xcqlDefinition">

<xs:sequence>

<xs:element ref="prefixes" minOccurs="0"/>

<xs:element ref="triple"/>

<xs:element ref="sortKeys"/>

</xs:sequence>

</xs:complexType>

On the other hand, in the draft CQL specification of September 20, 2010:

http://www.loc.gov/standards/sru/oasis/current/cql.doc

it is said that:

"A CQL query [...] may have a sort specification at the end, following the 'sortBy' keyword" (page 4)

as also reported in the ABNF query syntax:

cql-query = query [sort-spec] (page 8)

Best regards,

Nicola Ferro

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Nicola Ferro - Ph.D. in Computer Science Assistant Professor

Department of Information Engineering (DEI) University of Padua Via Gradenigo, 6/A - 35131 Padova - Italy Tel +39 049 827 7939 Fax: +39 049 827 7799

skype: nicola.ferro e-mail: fer...@dei.unipd.it home page: http://ims.dei.unipd.it/members/ferro/