Hi Arthur, Yes, I am exactly suggesting we restrict it to
PrefixedName := PN_PREFIX ':' PN_LOCAL I am currently working on an implementation of the server side of query for the Lyo project. I will change my grammar to use the above, What is the procedure for changing the OSLC core spec? Steve Pitschke Development Lead for IBM Rational Connector for SAP Solution Manager From: Arthur Ryman <[email protected]> To: Steven B Pitschke/Lexington/IBM@IBMUS Cc: [email protected], [email protected] Date: 07/10/2012 07:57 AM Subject: Re: [oslc-core] Core Specification Version 2.0 Query Syntax: Prefixed Names Steven, All of your examples ( ":", "dcterms:" or ":comment") have clear semantics and are frequently used in SPARQL and Turtle. ":" means the URI associated with the prefix ":" "dcterms:" means just the URI associated with the prefix "dcterms:" Neither of the above is likely to appear in a query string. ":comment" is the concatenation of the URI associate with the prefix ":" and the local part "comment". This could be a valid predicate that might appear in a query string. In practice, no OSLC spec uses ":" as a prefix. Are you suggesting we restrict the grammar to only allow "reasonable" prefixed names? In that case, I believe the practice is to use prefixed names of the form: PrefixedName := PN_PREFIX ':' PN_LOCAL Regards, ___________________________________________________________________________ Arthur Ryman DE, Chief Architect, Reporting & Portfolio Strategy and Management IBM Software, Rational Toronto Lab | +1-905-413-3077 (office) | +1-416-939-5063 (mobile) From: Steven B Pitschke <[email protected]> To: [email protected] Date: 06/29/2012 01:15 PM Subject: [oslc-core] Core Specification Version 2.0 Query Syntax: Prefixed Names Sent by: [email protected] The core query specification http://open-services.net/bin/view/Main/OSLCCoreSpecQuery defers to the SPAQL specifction for Prefixed Names PrefixedName ::= /* see "SPARQL Query Language for RDF", http://www.w3.org/TR/rdf-sparql-query/#rPrefixedName */ However, the semantics and usefulness of some the allowed terminals are not clear to me: [68] PrefixedName := PNAME_LN | PNAME_NS [71] PNAME_NS := PN_PREFIX? ':' [72] PNAME_LN := PNAME_NS PN_LOCAL For example, what would the prefixed names of ":", "dcterms:" or ":comment" mean? I think it would be better to only support PrefixedName := ( PN_PREFIX ':' PN_LOCAL ) | PN_LOCAL which have fairly clear semantics. Steve Pitschke Senior Software Engineer and Architect Rational Software, IBM_______________________________________________ Oslc-Core mailing list [email protected] http://open-services.net/mailman/listinfo/oslc-core_open-services.net
