NPE on a particular SPARQL query
--------------------------------
Key: JENA-35
URL: https://issues.apache.org/jira/browse/JENA-35
Project: Jena
Issue Type: Bug
Components: ARQ
Environment: tdb 0.8.9
Reporter: Benson Margulies
Attachments: aq0.ru
nquads to demo this can be found on people.apache.org:~bimargulies,
1k_news.nq.gz
tdbquery --loc=1k_news.tdb --query=aq0.ru
First, the backtrace:
{noformat}
/Users/benson/data tdbquery --loc=1k_news.tdb --query=aq0.ru
Exception
java.lang.NullPointerException
at
com.hp.hpl.jena.sparql.serializer.FmtExpr$FmtExprARQVisitor.visit(FmtExpr.java:126)
at
com.hp.hpl.jena.sparql.expr.ExprFunctionN.visit(ExprFunctionN.java:109)
at com.hp.hpl.jena.sparql.serializer.FmtExpr.format(FmtExpr.java:37)
at com.hp.hpl.jena.sparql.util.ExprUtils.fmtSPARQL(ExprUtils.java:141)
at com.hp.hpl.jena.sparql.util.ExprUtils.fmtSPARQL(ExprUtils.java:146)
at com.hp.hpl.jena.sparql.util.ExprUtils.fmtSPARQL(ExprUtils.java:152)
at com.hp.hpl.jena.sparql.expr.ExprNode.toString(ExprNode.java:94)
at java.lang.String.valueOf(String.java:2826)
at java.lang.StringBuilder.append(StringBuilder.java:115)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterFilterExpr.accept(QueryIterFilterExpr.java:47)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterProcessBinding.hasNextBinding(QueryIterProcessBinding.java:52)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:260)
at
org.openjena.atlas.iterator.RepeatApplyIterator.hasNext(RepeatApplyIterator.java:34)
at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:260)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterPlainWrapper.hasNextBinding(QueryIterPlainWrapper.java:42)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterProcessBinding.hasNextBinding(QueryIterProcessBinding.java:48)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:260)
at
org.openjena.atlas.iterator.RepeatApplyIterator.hasNext(RepeatApplyIterator.java:34)
at
org.openjena.atlas.iterator.RepeatApplyIterator.hasNext(RepeatApplyIterator.java:34)
at
org.openjena.atlas.iterator.RepeatApplyIterator.hasNext(RepeatApplyIterator.java:34)
at
org.openjena.atlas.iterator.RepeatApplyIterator.hasNext(RepeatApplyIterator.java:34)
at org.openjena.atlas.iterator.Iter$4.hasNext(Iter.java:260)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterPlainWrapper.hasNextBinding(QueryIterPlainWrapper.java:42)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterDefaulting.hasNextBinding(QueryIterDefaulting.java:43)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:57)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.makeNextStage(QueryIterRepeatApply.java:84)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIterRepeatApply.hasNextBinding(QueryIterRepeatApply.java:52)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:28)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:28)
at
com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:66)
at
com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execConstruct(QueryExecutionBase.java:117)
at
com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execConstruct(QueryExecutionBase.java:100)
at
com.hp.hpl.jena.sparql.util.QueryExecUtils.doConstructQuery(QueryExecUtils.java:186)
at
com.hp.hpl.jena.sparql.util.QueryExecUtils.executeQuery(QueryExecUtils.java:58)
at arq.query.queryExec(query.java:124)
at arq.query.exec(query.java:91)
at arq.cmdline.CmdMain.mainMethod(CmdMain.java:85)
at arq.cmdline.CmdMain.mainRun(CmdMain.java:47)
at arq.cmdline.CmdMain.mainRun(CmdMain.java:34)
at tdb.tdbquery.main(tdbquery.java:22)
{noformat}
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