- From: Michael Hausenblas <michael.hausenblas@deri.org>
- Date: Tue, 14 Jun 2011 16:21:20 +0100
- To: Eric Prud'hommeaux <eric@w3.org>
- Cc: public-rdb2rdf-wg@w3.org
Awesome! Wasn't aware of Yacker ... can I haz JS plz? ... http://pegjs.majda.cz/ Cheers, Michael -- Dr. Michael Hausenblas, Research Fellow LiDRC - Linked Data Research Centre DERI - Digital Enterprise Research Institute NUIG - National University of Ireland, Galway Ireland, Europe Tel. +353 91 495730 http://linkeddata.deri.ie/ http://sw-app.org/about.html On 14 Jun 2011, at 16:10, Eric Prud'hommeaux wrote: > I hacked up a "grammar" for an R2RML mapping (scare quotes 'cause it's > an abstract syntax -- there are no lexical tokens to e.g. tell if the > first Name is a TableOwner or a LogicalTable). > > http://www.w3.org/2005/01/yacker/uploads/R2RML_Mapping?lang=perl&markup=html#prod-R2RML_Mapping-R2RML_Mapping > > Anyone can hack on this. Note that there's no history, so if you're > going to do something radical, it's polite to either save under a new > name or copy the old bnf someplace safe like an email. > > I tried to be as faitful to the spec text as possible, which should > hilight some possible questions, e.g. > > [2] TriplesMap ::= (TableOwner)? LogicalTable SubjectMap > (PredicateObjectMap)* (RefPredicateObjectMap)* > [4] LogicalTable ::= TableName > | SqlQuery > > Shouldn't the TableOwner be optional only when the LogicalTable is a > TableName, i.e. > > [2] TriplesMap ::= LogicalTable SubjectMap (PredicateObjectMap)* > (RefPredicateObjectMap)* > [4] LogicalTable ::= TableOwner? TableName > | SqlQuery > ? > > Anyways, I think working out an abstract syntax will help many people > towards understand R2RML. > -- > -ericP >
Received on Tuesday, 14 June 2011 15:21:51 UTC