Hi everyone, We are using ARQ's SPARQL parser to parse graph patterns and noticed that it allows dashes in variable names if these variables occur as the *object* location of a triple pattern. If the variable names at the *subject* location of a triple pattern contains dashes, it fails with a ParseException. As far as we could tell the SPARQL specification does not allow dashes in variable names at all (https://www.w3.org/TR/sparql11-query/#rVARNAME). The pattern1 and pattern2 below should both fail, but the first one does not fail and the second does fail.
String pattern1 = "<test> https://www.tno.nl/example/b ?community-ID ."; ARQParser parser1 = new ARQParser(new StringReader(pattern1)); parser1.GroupGraphPatternSub(); String pattern2 = "?community-ID https://www.tno.nl/example/b <test> ."; ARQParser parser2 = new ARQParser(new StringReader(pattern2)); parser2.GroupGraphPatternSub(); Is this a bug? Best regards, Barry This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. TNO accepts no liability for the content of this e-mail, for the manner in which you use it and for damage of any kind resulting from the risks inherent to the electronic transmission of messages.
