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https://issues.apache.org/jira/browse/JENA-362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14875633#comment-14875633
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Andy Seaborne commented on JENA-362:
------------------------------------
The current codebase has the changes applied. I'm unclear what you are
suggesting. What could the code do? If O and S are null, calling (?,P,?) and
filter for string objects is about the best that can happen as far as I am
aware. Note: there is no indexing of L.
Do you have a proposal relative to the current codebase?
(Even when O is null, there is an implicit "O is a string" condition in this
call.)
> model.listStatements(s,p,o,lang) has problems when o or lang is null
> --------------------------------------------------------------------
>
> Key: JENA-362
> URL: https://issues.apache.org/jira/browse/JENA-362
> Project: Apache Jena
> Issue Type: Bug
> Components: Jena
> Affects Versions: Jena 2.7.4
> Reporter: François-Paul Servant
> Assignee: Andy Seaborne
> Priority: Minor
> Fix For: Jena 2.10.0
>
> Attachments: ListStatementTest.java, ModelCom.java
>
>
> 1) model.listStatements(s,p,null,lang) doesn't filter on lang param
> 2) model.listStatements(s,p,o,null) only returns statements whose object has
> lang "" (when o != null)
> TEST 1
> import org.junit.Test;
> import com.hp.hpl.jena.rdf.model.*;
> public class LstStmt1 {
> @Test
> public final void test() {
> Model m = ModelFactory.createDefaultModel();
> Resource s = m.createResource("http://www.a.com/s";);
> Property p = m.createProperty("http://www.a.com/p";);
> m.add(s,p,m.createResource("http://www.a.com/o";));
> m.add(s,p,"texte","fr");
> m.add(s,p,"text","en");
>
> StmtIterator it = m.listStatements(s, p, null,"en");
> // list all the statements - not what one can expect
> for (;it.hasNext();) {
> System.out.println(it.next());
> }
> }
> }
> TEST2
> public class LstStmt2 {
> @Test
> public final void test() {
> Model m = ModelFactory.createDefaultModel();
> Resource s = m.createResource("http://www.a.com/s";);
> Property p = m.createProperty("http://www.a.com/p";);
> m.add(s,p,"text","en");
> m.add(s,p,"text");
>
> StmtIterator it = m.listStatements(s, p,"text",null);
> // should list the 2 statements, but doesn't: only the one
> without lang
> for (;it.hasNext();) {
> System.out.println(it.next());
> }
> }
> }
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