HTTP Status 500 - 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)


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.


Apache Tomcat/7.0.56