You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@jena.apache.org by "Dimitris Kontokostas (JIRA)" <ji...@apache.org> on 2014/07/25 22:16:38 UTC
[jira] [Updated] (JENA-750) Inconsistent state of QuerySolution
[ https://issues.apache.org/jira/browse/JENA-750?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dimitris Kontokostas updated JENA-750:
--------------------------------------
Description:
Steps to reproduce:
1) create an ontology Model
{code}
ModelFactory.createOntologyModel(OntModelSpec.OWL_DL_MEM, ModelFactory.createDefaultModel());
{code}
2) read the following URI: http://dbpedia.org/resource/Berlin
with model.read()
3) run this query against the model
{code}
SELECT DISTINCT ?resource
WHERE
{ ?resource <http://xmlns.com/foaf/0.1/age> ?c }
GROUP BY ?resource
HAVING ( count(?c) != 1 )
{code}
===================
"resource" variable does not exists in the query solution and I get a NullPointerException
{code}
while (results.hasNext()) {
QuerySolution qs = results.next();
String resource = qs.get("resource").toString();
}
{code}
was:
Steps to reproduce:
1) create an ontology Model
ModelFactory.createOntologyModel(OntModelSpec.OWL_DL_MEM, ModelFactory.createDefaultModel());
2) read the following URI: http://dbpedia.org/resource/Berlin
with model.read()
3) run this query against the model
SELECT DISTINCT ?resource
WHERE
{ ?resource <http://xmlns.com/foaf/0.1/age> ?c }
GROUP BY ?resource
HAVING ( count(?c) != 1 )
===================
"resource" variable does not exists in the query solution and I get a NullPointerException
while (results.hasNext()) {
QuerySolution qs = results.next();
String resource = qs.get("resource").toString();
}
> Inconsistent state of QuerySolution
> -----------------------------------
>
> Key: JENA-750
> URL: https://issues.apache.org/jira/browse/JENA-750
> Project: Apache Jena
> Issue Type: Bug
> Components: Jena
> Affects Versions: Jena 2.11.1
> Environment: Ubuntu 14.02
> Reporter: Dimitris Kontokostas
>
> Steps to reproduce:
> 1) create an ontology Model
> {code}
> ModelFactory.createOntologyModel(OntModelSpec.OWL_DL_MEM, ModelFactory.createDefaultModel());
> {code}
> 2) read the following URI: http://dbpedia.org/resource/Berlin
> with model.read()
> 3) run this query against the model
> {code}
> SELECT DISTINCT ?resource
> WHERE
> { ?resource <http://xmlns.com/foaf/0.1/age> ?c }
> GROUP BY ?resource
> HAVING ( count(?c) != 1 )
> {code}
> ===================
> "resource" variable does not exists in the query solution and I get a NullPointerException
> {code}
> while (results.hasNext()) {
> QuerySolution qs = results.next();
> String resource = qs.get("resource").toString();
> }
> {code}
--
This message was sent by Atlassian JIRA
(v6.2#6252)