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https://issues.apache.org/jira/browse/CLEREZZA-15?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reto Bachmann-Gmür reassigned CLEREZZA-15:
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Assignee: Hasan
> Sparql query serialization error
> --------------------------------
>
> Key: CLEREZZA-15
> URL: https://issues.apache.org/jira/browse/CLEREZZA-15
> Project: Clerezza
> Issue Type: Bug
> Reporter: Hasan
> Assignee: Hasan
>
> The following query after being parsed generates an error when serialized
> PREFIX owl: <http://www.w3.org/2002/07/owl#>
> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
> PREFIX skos: <http://www.w3.org/2008/05/skos#>
> CONSTRUCT {?concept a skos:Concept; skos:prefLabel ?prefLabel; rdfs:comment
> ?comment; owl:sameAs ?sameConcept .}
> WHERE { ?concept skos:inScheme
> <http://localhost:8080/concept-scheme/default>; skos:prefLabel ?prefLabel .
> OPTIONAL { ?concept skos:altLabel ?altLabel; rdfs:comment ?comment;
> owl:sameAs ?sameConcept . }
> FILTER (STR(?prefLabel) = 'Linux' || STR(?altLabel) = 'Linux')}
> => error generated:
> java.lang.ClassCastException:
> org.apache.clerezza.rdf.core.sparql.query.impl.SimpleBasicGraphPattern cannot
> be cast to org.apache.clerezza.rdf.core.sparql.query.GroupGraphPattern
> at
> org.apache.clerezza.rdf.core.sparql.query.impl.SimpleStringQuerySerializer.appendQueryPattern(SimpleStringQuerySerializer.java:127)
> at
> org.apache.clerezza.rdf.core.sparql.query.impl.SimpleStringQuerySerializer.appendWhere(SimpleStringQuerySerializer.java:112)
> at
> org.apache.clerezza.rdf.core.sparql.query.impl.SimpleStringQuerySerializer.serialize(SimpleStringQuerySerializer.java:270)
> affected bundle: org.apache.clerezza.rdf.core
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