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Date: Tue, 1 Mar 2011 13:15:37 +0000 (UTC)
From: "Richard Cyganiak (JIRA)" <jira@apache.org>
To: jena-dev@incubator.apache.org
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Subject: [jira] Commented: (JENA-51) Turtle parser misses prefix
 declarations
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    [ https://issues.apache.org/jira/browse/JENA-51?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13000865#comment-13000865 ] 

Richard Cyganiak commented on JENA-51:
--------------------------------------

Upgrading to 2.6.4 fixed the problem. Sorry, should have tried that first. Thanks for the help everyone.

(Good to see that jena.jar and arq.jar now have the version number in the filename.)

> Turtle parser misses prefix declarations
> ----------------------------------------
>
>                 Key: JENA-51
>                 URL: https://issues.apache.org/jira/browse/JENA-51
>             Project: Jena
>          Issue Type: Bug
>          Components: Jena
>            Reporter: Richard Cyganiak
>            Assignee: Andy Seaborne
>            Priority: Minor
>
> Jena's Turtle parser doesn't capture @prefix declarations in the prefix mapping. Any triples are parsed correctly, but model.getNsPrefixMap() and friends show an empty prefix mapping.
> The N3 parser handles this correctly.
> ====== example code below =======
> import com.hp.hpl.jena.rdf.model.*;
> public class Test {
> 	public static void main(String[] args) {
> 		String s =
> 			"@prefix ex1: <http://example.com/1#>.\n" +
> 			"@prefix ex2: <http://example.com/2#>.\n" +
> 			"ex1:A a ex1:B .";
> 		
> 		Model n3 = ModelFactory.createDefaultModel();
> 		System.out.println("Parsing with N3 parser and printing prefixes:");
> 		n3.read(new java.io.ByteArrayInputStream(s.getBytes()), null, "N3");
> 		System.out.println(n3.getNsPrefixMap());
> 		Model turtle = ModelFactory.createDefaultModel();
> 		System.out.println("Parsing with Turtle parser and printing prefixes:");
> 		turtle.read(new java.io.ByteArrayInputStream(s.getBytes()), null, "TURTLE");
> 		System.out.println(turtle.getNsPrefixMap());
> 	}
> }
> ===== output ======
> Parsing with N3 parser:
> {ex2=http://example.com/2#, ex1=http://example.com/1#}
> Parsing with Turtle parser:
> {}

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