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https://issues.apache.org/jira/browse/JENA-1941?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne reassigned JENA-1941:
-----------------------------------
Assignee: Andy Seaborne
> Parsed query cannot get serialized
> ----------------------------------
>
> Key: JENA-1941
> URL: https://issues.apache.org/jira/browse/JENA-1941
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ, Jena
> Affects Versions: Jena 3.16.0
> Environment: Oracle jdk-14.0.1
> Reporter: Michael Cochez
> Assignee: Andy Seaborne
> Priority: Minor
> Labels: Serializer, parser
>
> The following query can be parsed, but cannot be serialized back:
> {code:java}
> import org.apache.jena.query.Query;
> import org.apache.jena.query.QueryFactory;
> public class MinimalTest {
> public static void main(String[] args) {
> String queryString = "SELECT ?a WHERE { <%s> <http://ex.com>
> <http://ex.com> }";
> Query q = QueryFactory.create(queryString);
> String serialized = q.serialize();
> System.out.println(serialized);
> }
> }
> {code}
> {noformat}
> Exception in thread "main" java.lang.StringIndexOutOfBoundsException: begin
> 0, end 51, length 50
> at java.base/java.lang.String.checkBoundsBeginEnd(String.java:3756)
> at java.base/java.lang.String.substring(String.java:1902)
> at
> org.apache.jena.shared.impl.PrefixMappingImpl.qnameFor(PrefixMappingImpl.java:235)
> at org.apache.jena.sparql.util.FmtUtils.prefixFor(FmtUtils.java:494)
> at org.apache.jena.sparql.util.FmtUtils.stringForURI(FmtUtils.java:448)
> at org.apache.jena.sparql.util.FmtUtils.stringForURI(FmtUtils.java:431)
> at org.apache.jena.sparql.util.FmtUtils.stringForNode(FmtUtils.java:374)
> at org.apache.jena.sparql.util.FmtUtils.stringForNode(FmtUtils.java:348)
> at
> org.apache.jena.sparql.serializer.FormatterBase.slotToString(FormatterBase.java:57)
> at
> org.apache.jena.sparql.serializer.FormatterElement.setWidths(FormatterElement.java:615)
> at
> org.apache.jena.sparql.serializer.FormatterElement.formatTriples(FormatterElement.java:503)
> at
> org.apache.jena.sparql.serializer.FormatterElement.flush(FormatterElement.java:558)
> at
> org.apache.jena.sparql.serializer.FormatterElement.visit(FormatterElement.java:165)
> at
> org.apache.jena.sparql.syntax.ElementPathBlock.visit(ElementPathBlock.java:94)
> at
> org.apache.jena.sparql.serializer.FormatterElement.visit(FormatterElement.java:321)
> at
> org.apache.jena.sparql.syntax.ElementGroup.visit(ElementGroup.java:120)
> at
> org.apache.jena.sparql.serializer.FormatterElement.visitAsGroup(FormatterElement.java:453)
> at
> org.apache.jena.sparql.serializer.QuerySerializer.visitQueryPattern(QuerySerializer.java:207)
> at org.apache.jena.query.Query.visit(Query.java:770)
> at org.apache.jena.query.Query.serialize(Query.java:928)
> at org.apache.jena.query.Query.serialize(Query.java:905)
> at org.apache.jena.query.Query.serialize(Query.java:895)
> at org.apache.jena.query.Query.serialize(Query.java:856)
> at MinimalTest.main(MinimalTest.java:10)
> {noformat}
> I am not entirely sure whether it is
> # The query which is invalid, in which case there is a bug in the parser
> # The serialization which should not fail, in which case the serializer has a
> bug.
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