type Exception report
message Streaming result set com.mysql.jdbc.RowDataDynamic@5670957d is still active. No statements may be issued when any streaming result sets are open and in use on a given connection. Ensure that you have called .close() on any active streaming result sets before attempting more queries.: SELECT `publicaciones`.`ID` FROM `publicaciones` WHERE ((CONCAT('http://dx.doi.org/', `publicaciones`.`doi`)) = 'https://linkeddata.cenpat-conicet.gob.ar/resource/instant/1996-01-03T04:21:00' AND (CONCAT('http://dx.doi.org/', `publicaciones`.`doi`)) IS NOT NULL) (E0)
description The server encountered an internal error that prevented it from fulfilling this request.
exception
de.fuberlin.wiwiss.d2rq.D2RQException: Streaming result set com.mysql.jdbc.RowDataDynamic@5670957d is still active. No statements may be issued when any streaming result sets are open and in use on a given connection. Ensure that you have called .close() on any active streaming result sets before attempting more queries.: SELECT `publicaciones`.`ID` FROM `publicaciones` WHERE ((CONCAT('http://dx.doi.org/', `publicaciones`.`doi`)) = 'https://linkeddata.cenpat-conicet.gob.ar/resource/instant/1996-01-03T04:21:00' AND (CONCAT('http://dx.doi.org/', `publicaciones`.`doi`)) IS NOT NULL) (E0) de.fuberlin.wiwiss.d2rq.sql.SQLIterator.ensureQueryExecuted(SQLIterator.java:165) de.fuberlin.wiwiss.d2rq.sql.SQLIterator.hasNext(SQLIterator.java:54) de.fuberlin.wiwiss.d2rq.engine.QueryIterTableSQL.hasNextBinding(QueryIterTableSQL.java:90) com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:108) com.hp.hpl.jena.sparql.engine.iterator.QueryIterConcat.hasNextBinding(QueryIterConcat.java:83) com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:108) com.hp.hpl.jena.sparql.engine.iterator.QueryIterConcat.hasNextBinding(QueryIterConcat.java:83) com.hp.hpl.jena.sparql.engine.iterator.QueryIteratorBase.hasNext(QueryIteratorBase.java:108) de.fuberlin.wiwiss.d2rq.find.TripleQueryIter.hasNext(TripleQueryIter.java:31) com.hp.hpl.jena.util.IteratorCollection.iteratorToList(IteratorCollection.java:64) com.hp.hpl.jena.graph.impl.SimpleBulkUpdateHandler.addIterator(SimpleBulkUpdateHandler.java:72) com.hp.hpl.jena.graph.impl.SimpleBulkUpdateHandler.add(SimpleBulkUpdateHandler.java:68) de.fuberlin.wiwiss.d2rq.ResourceDescriber.description(ResourceDescriber.java:72) de.fuberlin.wiwiss.d2rq.server.D2RServer$1$1.describe(D2RServer.java:216) com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execDescribe(QueryExecutionBase.java:338) com.hp.hpl.jena.sparql.engine.QueryExecutionBase.execDescribe(QueryExecutionBase.java:276) de.fuberlin.wiwiss.d2rq.server.ResourceDescriptionServlet.doGet(ResourceDescriptionServlet.java:60) javax.servlet.http.HttpServlet.service(HttpServlet.java:620) javax.servlet.http.HttpServlet.service(HttpServlet.java:727) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.56 logs.