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[William Candillon <1011126@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I'm writing the following query which streams fine:
 let $raw-data as xs:string := http:send-request(<http:request
href="http://cf.zorba-xquery.com.s3.amazonaws.com/forecasts.xml";
method="GET" override-media-type="text/plain" />)[2]
 let $data := p:parse($raw-data,
<opt:options><opt:parse-external-parsed-entity
opt:skip-root-nodes="1"/></opt:options>)
 for $node in $data
 where $node/@site-id = "3"
 return
   $node

However if I write:
let $result :=
 let $raw-data as xs:string := http:send-request(<http:request
href="http://cf.zorba-xquery.com.s3.amazonaws.com/forecasts.xml";
method="GET" override-media-type="text/plain" />)[2]
 let $data := p:parse($raw-data,
<opt:options><opt:parse-external-parsed-entity
opt:skip-root-nodes="1"/></opt:options>)
 for $node in $data
 where $node/@site-id = "3"
 return
   $node
return subsequence($result, 1, 1)
The query result is extremely long to compute.

** Affects: zorba
     Importance: Undecided
     Assignee: Markos Zaharioudakis (markos-za)
         Status: New

** Changed in: zorba
    Milestone: None => 3.0

** Changed in: zorba
     Assignee: (unassigned) => Markos Zaharioudakis (markos-za)

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https://bugs.launchpad.net/bugs/1011126

Title:
  subsequence and streaming

Status in Zorba - The XQuery Processor:
  New

Bug description:
  I'm writing the following query which streams fine:
   let $raw-data as xs:string := http:send-request(<http:request
  href="http://cf.zorba-xquery.com.s3.amazonaws.com/forecasts.xml";
  method="GET" override-media-type="text/plain" />)[2]
   let $data := p:parse($raw-data,
  <opt:options><opt:parse-external-parsed-entity
  opt:skip-root-nodes="1"/></opt:options>)
   for $node in $data
   where $node/@site-id = "3"
   return
     $node

  However if I write:
  let $result :=
   let $raw-data as xs:string := http:send-request(<http:request
  href="http://cf.zorba-xquery.com.s3.amazonaws.com/forecasts.xml";
  method="GET" override-media-type="text/plain" />)[2]
   let $data := p:parse($raw-data,
  <opt:options><opt:parse-external-parsed-entity
  opt:skip-root-nodes="1"/></opt:options>)
   for $node in $data
   where $node/@site-id = "3"
   return
     $node
  return subsequence($result, 1, 1)
  The query result is extremely long to compute.

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