[redland-dev] [Raptor RDF Syntax Library 0000580]: Bnode collisions when converting from ttl to nt using rapper

[Mantis Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.librdf.org/mantis/view.php?id=580 
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Reported By:                jrweave
Assigned To:                
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Project:                    Raptor RDF Syntax Library
Issue ID:                   580
Category:                   utilities
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Syntax Name:                 
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Date Submitted:             2014-08-19 18:23
Last Modified:              2014-08-19 18:23
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Summary:                    Bnode collisions when converting from ttl to nt
using rapper
Description: 
Turtle files allow blank nodes labels with underscores, like _:a_b.  N-triples
does not.  It appears that when converting turtle files to N-triples, rapper
simply replaces '_' with 'z'.  However, this will cause a blank node collision
if there is already a blank node _:azb.

Steps to Reproduce: 
1. Set up the following file.ttl.

_:ab a <data:type> .
_:azb a <data:type> .
_:a_b a <data:type> .

2. Then run the following:

rapper -i turtle -o ntriples file.ttl 
rapper: Parsing URI file://[REDACTED]/file.ttl with parser turtle
rapper: Serializing with serializer ntriples
_:ab <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <data:type> .
_:azb <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <data:type> .
_:azb <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <data:type> .
rapper: Parsing returned 3 triples
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Issue History 
Date Modified    Username       Field                    Change               
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2014-08-19 18:23 jrweave        New Issue                                    
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