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https://issues.apache.org/jira/browse/MARMOTTA-298?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sergio Fernández resolved MARMOTTA-298.
---------------------------------------
Resolution: Fixed
> NullPointerException submitting a SPARQL Query
> ----------------------------------------------
>
> Key: MARMOTTA-298
> URL: https://issues.apache.org/jira/browse/MARMOTTA-298
> Project: Marmotta
> Issue Type: Bug
> Components: Platform
> Affects Versions: 3.0-incubating
> Reporter: Sergio Fernández
> Assignee: Sergio Fernández
> Priority: Blocker
> Labels: sparql
> Fix For: 3.1-incubating
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> From a user request from the users' mailing list
> http://markmail.org/message/lnaxpe2ifijwmifk
> I have detected an important bug in the SPARQL Select endpoint, which returns
> an error when html is requested:
> 13:29:54.792 ERROR - null
> java.lang.NullPointerException: null
> at
> org.apache.marmotta.platform.sparql.services.sparqlio.sparqlhtml.SPARQLResultsHTMLWriter.startQueryResult(SPARQLResultsHTMLWriter.java:80)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at org.openrdf.query.QueryResults.report(QueryResults.java:153)
> ~[sesame-query-2.7.5.jar:na]
> at
> org.openrdf.repository.sail.SailTupleQuery.evaluate(SailTupleQuery.java:76)
> ~[sesame-repository-sail-2.7.5.jar:na]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.query(SparqlServiceImpl.java:254)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.access$200(SparqlServiceImpl.java:71)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl$2.call(SparqlServiceImpl.java:133)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl$2.call(SparqlServiceImpl.java:122)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> ~[na:1.7.0_25]
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> ~[na:1.7.0_25]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> ~[na:1.7.0_25]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> ~[na:1.7.0_25]
> at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_25]
> 13:29:54.794 ERROR - error while evaluating query: {}
> org.openrdf.query.QueryEvaluationException: error while writing query tuple
> result:
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.query(SparqlServiceImpl.java:256)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.access$200(SparqlServiceImpl.java:71)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl$2.call(SparqlServiceImpl.java:133)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl$2.call(SparqlServiceImpl.java:122)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> ~[na:1.7.0_25]
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> ~[na:1.7.0_25]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> ~[na:1.7.0_25]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> ~[na:1.7.0_25]
> at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_25]
> Caused by: org.openrdf.query.TupleQueryResultHandlerException:
> java.lang.NullPointerException
> at
> org.apache.marmotta.platform.sparql.services.sparqlio.sparqlhtml.SPARQLResultsHTMLWriter.startQueryResult(SPARQLResultsHTMLWriter.java:83)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at org.openrdf.query.QueryResults.report(QueryResults.java:153)
> ~[sesame-query-2.7.5.jar:na]
> at
> org.openrdf.repository.sail.SailTupleQuery.evaluate(SailTupleQuery.java:76)
> ~[sesame-repository-sail-2.7.5.jar:na]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.query(SparqlServiceImpl.java:254)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> ... 8 common frames omitted
> Caused by: java.lang.NullPointerException: null
> at
> org.apache.marmotta.platform.sparql.services.sparqlio.sparqlhtml.SPARQLResultsHTMLWriter.startQueryResult(SPARQLResultsHTMLWriter.java:80)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> ... 11 common frames omitted
> 13:35:09.904 ERROR - null
> java.lang.NullPointerException: null
> at
> org.apache.marmotta.platform.sparql.services.sparqlio.sparqlhtml.SPARQLResultsHTMLWriter.startQueryResult(SPARQLResultsHTMLWriter.java:80)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at org.openrdf.query.QueryResults.report(QueryResults.java:153)
> ~[sesame-query-2.7.5.jar:na]
> at
> org.openrdf.repository.sail.SailTupleQuery.evaluate(SailTupleQuery.java:76)
> ~[sesame-repository-sail-2.7.5.jar:na]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.query(SparqlServiceImpl.java:254)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.access$200(SparqlServiceImpl.java:71)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl$2.call(SparqlServiceImpl.java:133)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl$2.call(SparqlServiceImpl.java:122)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> ~[na:1.7.0_25]
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> ~[na:1.7.0_25]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> ~[na:1.7.0_25]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> ~[na:1.7.0_25]
> at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_25]
> 13:35:09.907 ERROR - error while evaluating query: {}
> org.openrdf.query.QueryEvaluationException: error while writing query tuple
> result:
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.query(SparqlServiceImpl.java:256)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.access$200(SparqlServiceImpl.java:71)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl$2.call(SparqlServiceImpl.java:133)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl$2.call(SparqlServiceImpl.java:122)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> ~[na:1.7.0_25]
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> ~[na:1.7.0_25]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> ~[na:1.7.0_25]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> ~[na:1.7.0_25]
> at java.lang.Thread.run(Thread.java:724) ~[na:1.7.0_25]
> Caused by: org.openrdf.query.TupleQueryResultHandlerException:
> java.lang.NullPointerException
> at
> org.apache.marmotta.platform.sparql.services.sparqlio.sparqlhtml.SPARQLResultsHTMLWriter.startQueryResult(SPARQLResultsHTMLWriter.java:83)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> at org.openrdf.query.QueryResults.report(QueryResults.java:153)
> ~[sesame-query-2.7.5.jar:na]
> at
> org.openrdf.repository.sail.SailTupleQuery.evaluate(SailTupleQuery.java:76)
> ~[sesame-repository-sail-2.7.5.jar:na]
> at
> org.apache.marmotta.platform.sparql.services.sparql.SparqlServiceImpl.query(SparqlServiceImpl.java:254)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> ... 8 common frames omitted
> Caused by: java.lang.NullPointerException: null
> at
> org.apache.marmotta.platform.sparql.services.sparqlio.sparqlhtml.SPARQLResultsHTMLWriter.startQueryResult(SPARQLResultsHTMLWriter.java:80)
> ~[marmotta-sparql-3.1.0-incubating-SNAPSHOT.jar:3.1.0-incubating-SNAPSHOT]
> ... 11 common frames omitted
> That's because all tests over that endpoint never request html. And for our
> testing, we always use snorql, so the bug got away our control until now.
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