[dotNetRDF-Develop] Issue CORE-158 has been added to a project you are monitoring.

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Title: Update to latest SPARQL 1.1 draft specs
Project: Core Library (dotNetRDF.dll)
Created By: Rob Vesse
Milestone: 0.6.1 Beta
Category: Query
Priority: Critical
Type: Improvement
Description: 

 As usual shortly after a release the SPARQL 1.1 specs changed yet again. The latest specs include the following changes: 

 Remove SHA224 from hash function choices 
 Add functionSTRBEFORE,STRAFTER,REPLACE 
 BroadenREGXPto take a first argument of xsd:string and rdf:langString. 
 DefineDATATYPEon language tag literals. 
 Allow aggregates inORDER BYclause 
 Grammar: Backslash character escapes in prefixed names 
 Grammar: Fix: Allow ASK to take solution modifiers 
 Grammar: Fix:AdditiveExpression: ? => *  


 We already support STRBEFORE, STRAFTER and REPLACE so those are done  
 Removing SHA224 as a standard function should be relatively simple 
 Broadening REGEX is easy 
 Broadening DATATYPE is easy 
 Aggregates in ORDER BY is more complex, parser support should be simple but evaluation support may be tricky 
 Character escapes in QNames should be a relatively simple tokeniser fix 
 ASK allowing solution modifiers is an easy parser fix but need to look at what it means evaluation wise (if anything) 
 Already supported by parser, this was just an error, the SPARQL 1.0 grammar already specified it with * rather than ?  

 

 More information on this issue can be found at http://www.dotnetrdf.org/tracker/Issues/IssueDetail.aspx?id=158


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