The first 8 characters of the root is a folder name. I want to group by folder name. I simplified the xquery to eliminate the collateral interactions, but still receive this error.

p.s. I was able to get bindings working using quotes:

open C4;set  QUERYPATH c:\dev\xq;set bindings "$date=20120507, $envir=PRD_Win"

Source scheme:

<20120507/PRD_Win.nessus>

       <NessusClientData_v2>

  <Policy>

  <Report>

       <ReportHost>

              < ReportItem>

-------------------

Query: declare variable $date external;

<results>

{

for $x in //Report/ReportHost/ReportItem

  let $src := fn:root($x)

               return

                                             <summary>

      <source>substring(fn:name({$src}),1,8)</source>

                                             </summary>

}</results>

Query plan:

<QueryPlan>

  <VarStack>

    <Var name="$date" id="0">

      <Atm value="20120507" type="xs:untypedAtomic"/>

    </Var>

    <Var name="$envir" id="1">

      <Atm value="PRD_Win" type="xs:untypedAtomic"/>

    </Var>

  </VarStack>

  <CElem>

    <QNm value="results" type="xs:QName"/>

    <FLWR>

      <For var="$x">

        <AxisPath>

          <DBNodeSeq size="28">

            <DBNode name="C4" pre="0"/>

            <DBNode name="C4" pre="21934"/>

            <DBNode name="C4" pre="74441"/>

            <DBNode name="C4" pre="121967"/>

            <DBNode name="C4" pre="145433"/>

          </DBNodeSeq>

          <IterStep axis="descendant" test="Report"/>

          <IterStep axis="child" test="ReportHost"/>

          <IterStep axis="child" test="ReportItem"/>

        </AxisPath>

      </For>

      <Let var="$src">

        <FNNode name="root([node])">

          <VarRef>

            <Var name="$x" id="3"/>

          </VarRef>

        </FNNode>

      </Let>

      <Return>

        <CElem>

          <QNm value="summary" type="xs:QName"/>

          <CElem>

            <QNm value="source" type="xs:QName"/>

            <Str value="substring(fn:name(" type="xs:string"/>

            <VarRef>

              <Var name="$src" id="4"/>

            </VarRef>

            <Str value="),1,8)" type="xs:string"/>

          </CElem>

        </CElem>

      </Return>

    </FLWR>

  </CElem>

</QueryPlan>

Error: Improper use? Potential bug? Your feedback is welcome:

Contact: basex-talk@mailman.uni-konstanz.de

Version: BaseX 7.2.2 beta

Java: Oracle Corporation, 1.7.0

OS: Windows 7, amd64

Stack Trace:

java.lang.ArrayIndexOutOfBoundsException

v/r,

David Brown

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