Having trouble inserting elements using XQJ

On Sat, May 22, 2010 at 12:05 AM, <stefano at santoro.org> wrote: > Hi, > > I am attempting to execute an XQJ prepared expression that uses an external bind variable that accepts an xml element, and inserts it into the database document: > > declare variable $inserto as element(*,xs:untyped) external; > let $root := basex:db('Annotations')/Annotations > return (insert node $inserto into $root) > > I prepare the above statement and I bind DOM element as follows (groovy syntax): > > eltype = conn.createElementType(null, XQItemType.XQBASETYPE_ANYTYPE); > ixpr.bindNode(new QName("inserto"), irel, eltype); > > irel is dom element that serializes as follows: > > <inserto id="6"> > <testo>six</testo> > </inserto> > > unfortunately I get an NPE when I try to execute the Query: > > groovy:000> rs = ixpr.executeQuery() > ERROR java.lang.NullPointerException: > null > at org.basex.query.item.FElem.copy (FElem.java:214) > at org.basex.query.item.FElem.copy (FElem.java:1) > at org.basex.query.item.FElem.copy (FElem.java:210) > at org.basex.query.item.FElem.copy (FElem.java:1) > at org.basex.query.expr.Constr.add (Constr.java:107) > at org.basex.query.expr.Constr.<init> (Constr.java:53) > at org.basex.query.up.Insert.atomic (Insert.java:60) > at org.basex.query.up.Insert.atomic (Insert.java:1) > at org.basex.query.expr.Expr.iter (Expr.java:53) > at org.basex.query.QueryContext.iter (QueryContext.java:322) > at org.basex.query.QueryContext.iter (QueryContext.java:290) > at org.basex.api.xqj.BXQDynamicContext.execute (BXQDynamicContext.java:247) > at org.basex.api.xqj.BXQPreparedExpression.executeQuery (BXQPreparedExpression.java:54) > at groovysh_evaluate.run (groovysh_evaluate:10) > ... > > I am using BaseX 6.1 > > Am I doing anything wrong? > > Stefano

On Tue, May 25, 2010 at 10:21 PM, Stefano Santoro <stefano at santoro.org> wrote: > Hi Christian, > > thank you so very much for looking into this! I am enclosing a java > class that reproduces the NPE using the 6.1 base libraries. This code > assumes that you have created an 'Annotations' database with one > <Annotations/> root element. > > Ciao > Stefano > > > On Mon, May 24, 2010 at 8:56 AM, Christian Grün > <christian.gruen at gmail.com> wrote: >> Stefano, >> >> sorry for the delay. Yes, this looks like a bug. To speed this up, >> could you provide us with a code snippet that's running out of the >> box? (I didn't manage to quickly reproduce the problem). >> >> Thanks, >> Christian >> >> >> On Sat, May 22, 2010 at 12:05 AM, <stefano at santoro.org> wrote: >>> Hi, >>> >>> I am attempting to execute an XQJ prepared expression that uses an external bind variable that accepts an xml element, and inserts it into the database document: >>> >>> declare variable $inserto as element(*,xs:untyped) external; >>> let $root := basex:db('Annotations')/Annotations >>> return (insert node $inserto into $root) >>> >>> I prepare the above statement and I bind DOM element as follows (groovy syntax): >>> >>> eltype = conn.createElementType(null, XQItemType.XQBASETYPE_ANYTYPE); >>> ixpr.bindNode(new QName("inserto"), irel, eltype); >>> >>> irel is dom element that serializes as follows: >>> >>> <inserto id="6"> >>> <testo>six</testo> >>> </inserto> >>> >>> unfortunately I get an NPE when I try to execute the Query: >>> >>> groovy:000> rs = ixpr.executeQuery() >>> ERROR java.lang.NullPointerException: >>> null >>> at org.basex.query.item.FElem.copy (FElem.java:214) >>> at org.basex.query.item.FElem.copy (FElem.java:1) >>> at org.basex.query.item.FElem.copy (FElem.java:210) >>> at org.basex.query.item.FElem.copy (FElem.java:1) >>> at org.basex.query.expr.Constr.add (Constr.java:107) >>> at org.basex.query.expr.Constr.<init> (Constr.java:53) >>> at org.basex.query.up.Insert.atomic (Insert.java:60) >>> at org.basex.query.up.Insert.atomic (Insert.java:1) >>> at org.basex.query.expr.Expr.iter (Expr.java:53) >>> at org.basex.query.QueryContext.iter (QueryContext.java:322) >>> at org.basex.query.QueryContext.iter (QueryContext.java:290) >>> at org.basex.api.xqj.BXQDynamicContext.execute (BXQDynamicContext.java:247) >>> at org.basex.api.xqj.BXQPreparedExpression.executeQuery (BXQPreparedExpression.java:54) >>> at groovysh_evaluate.run (groovysh_evaluate:10) >>> ... >>> >>> I am using BaseX 6.1 >>> >>> Am I doing anything wrong? >>> >>> Stefano >> ___________________________ >

On Mon, May 24, 2010 at 8:56 AM, Christian Grün <christian.gruen at gmail.com> wrote: > Stefano, > > sorry for the delay. Yes, this looks like a bug. To speed this up, > could you provide us with a code snippet that's running out of the > box? (I didn't manage to quickly reproduce the problem). > > Thanks, > Christian > > > On Sat, May 22, 2010 at 12:05 AM, <stefano at santoro.org> wrote: >> Hi, >> >> I am attempting to execute an XQJ prepared expression that uses an external bind variable that accepts an xml element, and inserts it into the database document: >> >> declare variable $inserto as element(*,xs:untyped) external; >> let $root := basex:db('Annotations')/Annotations >> return (insert node $inserto into $root) >> >> I prepare the above statement and I bind DOM element as follows (groovy syntax): >> >> eltype = conn.createElementType(null, XQItemType.XQBASETYPE_ANYTYPE); >> ixpr.bindNode(new QName("inserto"), irel, eltype); >> >> irel is dom element that serializes as follows: >> >> <inserto id="6"> >> <testo>six</testo> >> </inserto> >> >> unfortunately I get an NPE when I try to execute the Query: >> >> groovy:000> rs = ixpr.executeQuery() >> ERROR java.lang.NullPointerException: >> null >> at org.basex.query.item.FElem.copy (FElem.java:214) >> at org.basex.query.item.FElem.copy (FElem.java:1) >> at org.basex.query.item.FElem.copy (FElem.java:210) >> at org.basex.query.item.FElem.copy (FElem.java:1) >> at org.basex.query.expr.Constr.add (Constr.java:107) >> at org.basex.query.expr.Constr.<init> (Constr.java:53) >> at org.basex.query.up.Insert.atomic (Insert.java:60) >> at org.basex.query.up.Insert.atomic (Insert.java:1) >> at org.basex.query.expr.Expr.iter (Expr.java:53) >> at org.basex.query.QueryContext.iter (QueryContext.java:322) >> at org.basex.query.QueryContext.iter (QueryContext.java:290) >> at org.basex.api.xqj.BXQDynamicContext.execute (BXQDynamicContext.java:247) >> at org.basex.api.xqj.BXQPreparedExpression.executeQuery (BXQPreparedExpression.java:54) >> at groovysh_evaluate.run (groovysh_evaluate:10) >> ... >> >> I am using BaseX 6.1 >> >> Am I doing anything wrong? >> >> Stefano > ___________________________

On Tue, May 25, 2010 at 5:22 PM, Christian Grün <christian.gruen at gmail.com> wrote: > Stefano, > > thanks for your Java class. I hope the problem is now fixed; please > have a look at our sources, or check out the latest versions from the > Maven repository: > > http://basex.org/maven/org/basex/basex/6.1.3/basex-6.1.3.jar > http://basex.org/maven/org/basex/basex-api/6.1.3/basex-api-6.1.3.jar > > Christian > >