[JENA-741] SPARQL replace causes query to crash when non-existent group in replacement pattern

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Jena 2.11.0
• Fix Version/s: Jena 2.12.0
• Component/s: ARQ
• Labels: arq sparql xpath
• Assignee: Andy Seaborne
• Reporter: Joshua Taylor
• Created: 08/Jul/14 00:57
• Updated: 19/Jul/14 18:26
• Resolved: 19/Jul/14 18:26

Description

If a replacement string uses a group that's not in the pattern, the whole query crashes (as opposed to the value of replace just being an error value). Version, query, and command line to reproduce:

$ sparql --version && cat query.rq && sparql --query query.rq --data data.n3 
Jena:       VERSION: 2.11.0
Jena:       BUILD_DATE: 2013-09-12T10:49:49+0100
ARQ:        VERSION: 2.11.0
ARQ:        BUILD_DATE: 2013-09-12T10:49:49+0100
RIOT:       VERSION: 2.11.0
RIOT:       BUILD_DATE: 2013-09-12T10:49:49+0100
select (replace("x", ".", "$1") as ?error) where {}
Exception
java.lang.IndexOutOfBoundsException: No group 1
        at java.util.regex.Matcher.start(Matcher.java:375)
        at java.util.regex.Matcher.appendReplacement(Matcher.java:880)
        at java.util.regex.Matcher.replaceAll(Matcher.java:955)
        at com.hp.hpl.jena.sparql.expr.nodevalue.XSDFuncOp.strReplace(XSDFuncOp.java:421)
        at com.hp.hpl.jena.sparql.expr.E_StrReplace.eval(E_StrReplace.java:52)
        at com.hp.hpl.jena.sparql.expr.ExprFunctionN.eval(ExprFunctionN.java:115)
        at com.hp.hpl.jena.sparql.expr.ExprFunctionN.eval(ExprFunctionN.java:112)
        at com.hp.hpl.jena.sparql.core.VarExprList.get(VarExprList.java:82)
        at com.hp.hpl.jena.sparql.engine.iterator.QueryIterAssign.accept(QueryIterAssign.java:68)
        at com.hp.hpl.jena.sparql.engine.iterator.QueryIterProcessBinding.hasNextBinding(QueryIterProcessBinding.java:64)
        at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
        at com.hp.hpl.jena.sparql.engine.iterator.QueryIterConvert.hasNextBinding(QueryIterConvert.java:59)
        at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
        at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
        at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
        at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorWrapper.hasNextBinding(QueryIteratorWrapper.java:40)
        at com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:112)
        at com.hp.hpl.jena.sparql.engine.ResultSetStream.hasNext(ResultSetStream.java:75)
        at com.hp.hpl.jena.sparql.resultset.ResultSetMem.<init>(ResultSetMem.java:97)
        at com.hp.hpl.jena.query.ResultSetFactory.makeRewindable(ResultSetFactory.java:420)
        at com.hp.hpl.jena.sparql.resultset.TextOutput.write(TextOutput.java:149)
        at com.hp.hpl.jena.sparql.resultset.TextOutput.write(TextOutput.java:132)
        at com.hp.hpl.jena.sparql.resultset.TextOutput.write(TextOutput.java:120)
        at com.hp.hpl.jena.sparql.resultset.TextOutput.format(TextOutput.java:67)
        at com.hp.hpl.jena.query.ResultSetFormatter.out(ResultSetFormatter.java:135)
        at com.hp.hpl.jena.sparql.util.QueryExecUtils.outputResultSet(QueryExecUtils.java:157)
        at com.hp.hpl.jena.sparql.util.QueryExecUtils.doSelectQuery(QueryExecUtils.java:199)
        at com.hp.hpl.jena.sparql.util.QueryExecUtils.executeQuery(QueryExecUtils.java:75)
        at arq.query.queryExec(query.java:194)
        at arq.query.exec(query.java:145)
        at arq.cmdline.CmdMain.mainMethod(CmdMain.java:101)
        at arq.cmdline.CmdMain.mainRun(CmdMain.java:63)
        at arq.cmdline.CmdMain.mainRun(CmdMain.java:50)
        at arq.query.main(query.java:63)
        at arq.sparql.main(sparql.java:27)

I would have expected

---------
| error |
=========
|       |
---------