Bodo,

thanks for your mail. It would be great if you could provide us with the data you're working with (which you can directly send to me), or build a small, self-contained example.

Christian

Am 18.06.2012 08:25 schrieb "Bodo Hüsemann" <bodo.huesemann@gmx.de>:
Hi,

the following xquery (BaseX721, Java, embedded server):

       for $guildchar in
collection('default')/apiresponse/guild[@name="Guild"]/characters/character
       return
               for $detailchar in
collection('default')/apiresponse/character
               where $detailchar/@name=$guildchar/@name
               return
               $detailchar

produces the exception:
java.io.IOException: Das Handle ist ungültig
 java.io.RandomAccessFile.seek(Native Method)
 org.basex.io.random.TableDiskAccess.readBlock(TableDiskAccess.java:519)
 org.basex.io.random.TableDiskAccess.readIndex(TableDiskAccess.java:502)
 org.basex.io.random.TableDiskAccess.cursor(TableDiskAccess.java:481)
 org.basex.io.random.TableDiskAccess.read1(TableDiskAccess.java:189)
 org.basex.data.Data.kind(Data.java:293)
 org.basex.query.item.DBNode$4.next(DBNode.java:350)
 org.basex.query.path.IterStep$1.next(IterStep.java:44)
 org.basex.query.iter.NodeIter.next(NodeIter.java:1)
 org.basex.query.path.IterPath$1.next(IterPath.java:64)
 org.basex.query.iter.NodeIter.next(NodeIter.java:1)
 org.basex.query.flwor.For$1.next(For.java:85)
 org.basex.query.flwor.FLWR$1.next(FLWR.java:63)
 org.basex.query.expr.Constr.add(Constr.java:63)
 org.basex.query.expr.CElem.item(CElem.java:82)
 org.basex.query.expr.CElem.item(CElem.java:1)
 org.basex.query.expr.CFrag.item(CFrag.java:1)
 org.basex.query.expr.ParseExpr.value(ParseExpr.java:66)
 org.basex.query.QueryContext.value(QueryContext.java:286)
 org.basex.query.func.UserFunc.value(UserFunc.java:153)
 org.basex.query.QueryContext.value(QueryContext.java:286)
 org.basex.query.func.TailFuncCall.value(TailFuncCall.java:46)
 org.basex.query.QueryContext.value(QueryContext.java:286)
 org.basex.query.func.UserFunc.value(UserFunc.java:153)
 org.basex.query.QueryContext.value(QueryContext.java:286)
 org.basex.query.func.BaseFuncCall.value(BaseFuncCall.java:55)
 org.basex.query.func.BaseFuncCall.iter(BaseFuncCall.java:68)
 org.basex.query.QueryContext.iter(QueryContext.java:275)
 org.basex.query.QueryContext.iter(QueryContext.java:229)
 org.basex.query.QueryProcessor.iter(QueryProcessor.java:74)
 org.basex.server.QueryListener.execute(QueryListener.java:122)
 org.basex.server.ClientListener.query(ClientListener.java:463)
 org.basex.server.ClientListener.run(ClientListener.java:148)

The Query is doing ok in the BaseX Gui but fails in my Application (other
queries are running like a charm).

Reformulations or similar variants of the query fail the same way. Do you
have a hint what could be wrong here? What should I try next?

Thanks a lot for this great xml db!

Best regards,
Bodo

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