com.hp.hpl.jena.query.QueryParseException: Variable used when already in-scope: ?v1 in ((AGG ?.0 count(?y0)) AS ?v1)

GitHub | KonradHoeffner | 3 years ago
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    Oxford error "Give me all houses with 2 rooms." Variable used when already in-scope

    GitHub | 3 years ago | KonradHoeffner
    com.hp.hpl.jena.query.QueryParseException: Variable used when already in-scope: ?v1 in ((AGG ?.0 count(?y0)) AS ?v1)

    Root Cause Analysis

    1. com.hp.hpl.jena.query.QueryParseException

      Variable used when already in-scope: ?v1 in ((AGG ?.0 count(?y0)) AS ?v1)

      at com.hp.hpl.jena.sparql.lang.SyntaxVarScope.checkAssignment()
    2. Apache Jena - ARQ (SPARQL 1.1 Query Engine)
      QueryExecutionFactory.create
      1. com.hp.hpl.jena.sparql.lang.SyntaxVarScope.checkAssignment(SyntaxVarScope.java:189)
      2. com.hp.hpl.jena.sparql.lang.SyntaxVarScope.checkExprListAssignment(SyntaxVarScope.java:141)
      3. com.hp.hpl.jena.sparql.lang.SyntaxVarScope.checkQueryScope(SyntaxVarScope.java:92)
      4. com.hp.hpl.jena.sparql.lang.SyntaxVarScope.check(SyntaxVarScope.java:66)
      5. com.hp.hpl.jena.sparql.lang.SPARQLParser.validateParsedQuery(SPARQLParser.java:56)
      6. com.hp.hpl.jena.sparql.lang.ParserSPARQL11.parse$(ParserSPARQL11.java:54)
      7. com.hp.hpl.jena.sparql.lang.SPARQLParser.parse(SPARQLParser.java:37)
      8. com.hp.hpl.jena.query.QueryFactory.parse(QueryFactory.java:139)
      9. com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:79)
      10. com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:52)
      11. com.hp.hpl.jena.query.QueryFactory.create(QueryFactory.java:40)
      12. com.hp.hpl.jena.query.QueryExecutionFactory.makeQuery(QueryExecutionFactory.java:565)
      13. com.hp.hpl.jena.query.QueryExecutionFactory.create(QueryExecutionFactory.java:192)
      13 frames
    3. org.aksw.autosparql
      MainView$11.run
      1. org.aksw.autosparql.tbsl.gui.vaadin.TBSLManager.executeSelect(TBSLManager.java:959)
      2. org.aksw.autosparql.tbsl.gui.vaadin.TBSLManager.fetchResult(TBSLManager.java:415)
      3. org.aksw.autosparql.tbsl.gui.vaadin.TBSLManager.createAnswer(TBSLManager.java:384)
      4. org.aksw.autosparql.tbsl.gui.vaadin.TBSLManager.answerQuestion(TBSLManager.java:345)
      5. org.aksw.autosparql.tbsl.gui.vaadin.view.MainView$11.run(MainView.java:504)
      5 frames
    4. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:744)
      1 frame