Saxon XSLT and XQuery Processor / Support Requests / #66 for-each loops through empty collection

oneil - 2014-02-04

Hi,

Thanks for contacting us in regards to the error you have hit.

Regardless of the not executing the for-loop the DateTime 'T12:00:00Z'
is not correct. You are missing the actual date part that is why it is
failing. E.g. 2014-02-01T12:00:00Z

I recommend using a developer site to report potential bugs:

https://saxonica.plan.io/projects/saxon

And forums:

https://saxonica.plan.io/projects/saxon/boards

On 04/02/2014 11:30, Ticket 66 wrote:

[support-requests:#66]
http://sourceforge.net/p/saxon/support-requests/66/ for-each loops
through empty collection

Status: open
Labels: for-each; loop; sequence; inner statement;
Created: Tue Feb 04, 2014 11:30 AM UTC by Anonymous
Last Updated: Tue Feb 04, 2014 11:30 AM UTC
Owner: nobody

In the following example the output of
$var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)] is
empty.
Therefore there is nothing to loop through. Although Saxon is
evaluating the inner statement which fails on xs:dateTime function.
$var565_cur/NonExistingElement is not available and fn:string will
return an empty string.

The underneath exception: Invalid dateTime value "T12:00:00Z"
(Non-numeric year component) is thrown.

Saxon (9.4.0.7) is evaluating code in a loop that not meant to be hit
because there are no items in the collection.

\<xsl:for-each
select="$var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)]">
\<ElementToGenerateForEachItemInLoop>
\<xsl:sequence
select="xs:string(xs:dateTime(fn:concat(fn:string($var565_cur/NonExistingElement),
'T12:00:00Z')))"/>
\</ElementToGenerateForEachItemInLoop>
\</xsl:for-each>

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Support Requests: #66

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- oneil - 2014-02-04
  
  Hi,
  
  My apologies you are correct the code in the for loop should not be
  evaluated. The problem is the xsl:sequence in the loop is being pulled
  out into a variable since it is not dependent on the for-loop. The
  policy should be to do lazy evaluation of the variable to where it is
  called in the loop, but this is not happening. We will investigate this
  further and let you know.
  
  Kind regards,
  
  O'Neil
  
  On 04/02/2014 14:51, oneil wrote:
  
  Hi,
  
  Thanks for contacting us in regards to the error you have hit.
  
  Regardless of the not executing the for-loop the DateTime 'T12:00:00Z'
  is not correct. You are missing the actual date part that is why it is
  failing. E.g. 2014-02-01T12:00:00Z
  
  I recommend using a developer site to report potential bugs:
  
  https://saxonica.plan.io/projects/saxon
  
  And forums:
  
  https://saxonica.plan.io/projects/saxon/boards
  
  On 04/02/2014 11:30, Ticket 66 wrote:
  
  ------------------------------------------------------------------------ /[support-requests:#66] <http://sourceforge.net/p/saxon/support-requests/66/> http://sourceforge.net/p/saxon/support-requests/66/ for-each loops through empty collection/ /Status:/ open /Labels:/ for-each; loop; sequence; inner statement; /Created:/ Tue Feb 04, 2014 11:30 AM UTC by Anonymous /Last Updated:/ Tue Feb 04, 2014 11:30 AM UTC /Owner:/ nobody In the following example the output of $var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)] is empty. Therefore there is nothing to loop through. Although Saxon is evaluating the inner statement which fails on xs:dateTime function. $var565_cur/NonExistingElement is not available and fn:string will return an empty string. The underneath exception: Invalid dateTime value "T12:00:00Z" (Non-numeric year component) is thrown. Saxon (9.4.0.7) is evaluating code in a loop that not meant to be hit because there are no items in the collection. \<xsl:for-each select="$var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)]"> \<ElementToGenerateForEachItemInLoop> \<xsl:sequence select="xs:string(xs:dateTime(fn:concat(fn:string($var565_cur/NonExistingElement), 'T12:00:00Z')))"/> \</ElementToGenerateForEachItemInLoop> \</xsl:for-each> ------------------------------------------------------------------------ Sent from sourceforge.net because you indicated interest in https://sourceforge.net/p/saxon/support-requests/66/ To unsubscribe from further messages, please visit https://sourceforge.net/auth/subscriptions/ No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2014.0.4259 / Virus Database: 3684/7058 - Release Date: 02/03/14
  
  [support-requests:#66]
  http://sourceforge.net/p/saxon/support-requests/66/ for-each loops
  through empty collection
  
  Status: open
  Labels: for-each; loop; sequence; inner statement;
  Created: Tue Feb 04, 2014 11:30 AM UTC by Anonymous
  Last Updated: Tue Feb 04, 2014 11:30 AM UTC
  Owner: nobody
  
  In the following example the output of
  $var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)] is
  empty.
  Therefore there is nothing to loop through. Although Saxon is
  evaluating the inner statement which fails on xs:dateTime function.
  $var565_cur/NonExistingElement is not available and fn:string will
  return an empty string.
  
  The underneath exception: Invalid dateTime value "T12:00:00Z"
  (Non-numeric year component) is thrown.
  
  Saxon (9.4.0.7) is evaluating code in a loop that not meant to be hit
  because there are no items in the collection.
  
  \<xsl:for-each
  select="$var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)]">
  \<ElementToGenerateForEachItemInLoop>
  \<xsl:sequence
  select="xs:string(xs:dateTime(fn:concat(fn:string($var565_cur/NonExistingElement),
  'T12:00:00Z')))"/>
  \</ElementToGenerateForEachItemInLoop>
  \</xsl:for-each>
  
  Sent from sourceforge.net because you indicated interest in
  https://sourceforge.net/p/saxon/support-requests/66/
  
  To unsubscribe from further messages, please visit
  https://sourceforge.net/auth/subscriptions/
  
  No virus found in this message.
  Checked by AVG - www.avg.com http://www.avg.com
  Version: 2014.0.4259 / Virus Database: 3684/7058 - Release Date: 02/03/14
  
  Related
  
  Support Requests: #66
  
  alternate
  
  If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
  - Anonymous
    
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  - oneil - 2014-02-04
    
    The bug has been reported and fixed. See the bug entry at
    
    https://saxonica.plan.io/issues/1997
    
    On 04/02/2014 15:09, oneil wrote:
    
    Hi,
    
    My apologies you are correct the code in the for loop should not be
    evaluated. The problem is the xsl:sequence in the loop is being pulled
    out into a variable since it is not dependent on the for-loop. The
    policy should be to do lazy evaluation of the variable to where it is
    called in the loop, but this is not happening. We will investigate this
    further and let you know.
    
    Kind regards,
    
    O'Neil
    
    On 04/02/2014 14:51, oneil wrote:
    
    Hi, Thanks for contacting us in regards to the error you have hit. Regardless of the not executing the for-loop the DateTime 'T12:00:00Z' is not correct. You are missing the actual date part that is why it is failing. E.g. 2014-02-01T12:00:00Z I recommend using a developer site to report potential bugs: https://saxonica.plan.io/projects/saxon And forums: https://saxonica.plan.io/projects/saxon/boards On 04/02/2014 11:30, Ticket 66 wrote: ------------------------------------------------------------------------ /[support-requests:#66] <http://sourceforge.net/p/saxon/support-requests/66/> http://sourceforge.net/p/saxon/support-requests/66/ for-each loops through empty collection/ /Status:/ open /Labels:/ for-each; loop; sequence; inner statement; /Created:/ Tue Feb 04, 2014 11:30 AM UTC by Anonymous /Last Updated:/ Tue Feb 04, 2014 11:30 AM UTC /Owner:/ nobody In the following example the output of $var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)] is empty. Therefore there is nothing to loop through. Although Saxon is evaluating the inner statement which fails on xs:dateTime function. $var565_cur/NonExistingElement is not available and fn:string will return an empty string. The underneath exception: Invalid dateTime value "T12:00:00Z" (Non-numeric year component) is thrown. Saxon (9.4.0.7) is evaluating code in a loop that not meant to be hit because there are no items in the collection. \<xsl:for-each select="$var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)]"> \<ElementToGenerateForEachItemInLoop> \<xsl:sequence select="xs:string(xs:dateTime(fn:concat(fn:string($var565_cur/NonExistingElement), 'T12:00:00Z')))"/> \</ElementToGenerateForEachItemInLoop> \</xsl:for-each> ------------------------------------------------------------------------ Sent from sourceforge.net because you indicated interest in https://sourceforge.net/p/saxon/support-requests/66/ To unsubscribe from further messages, please visit https://sourceforge.net/auth/subscriptions/ No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2014.0.4259 / Virus Database: 3684/7058 - Release Date: 02/03/14 ------------------------------------------------------------------------ /[support-requests:#66] <http://sourceforge.net/p/saxon/support-requests/66/> http://sourceforge.net/p/saxon/support-requests/66/ for-each loops through empty collection/ /Status:/ open /Labels:/ for-each; loop; sequence; inner statement; /Created:/ Tue Feb 04, 2014 11:30 AM UTC by Anonymous /Last Updated:/ Tue Feb 04, 2014 11:30 AM UTC /Owner:/ nobody In the following example the output of $var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)] is empty. Therefore there is nothing to loop through. Although Saxon is evaluating the inner statement which fails on xs:dateTime function. $var565_cur/NonExistingElement is not available and fn:string will return an empty string. The underneath exception: Invalid dateTime value "T12:00:00Z" (Non-numeric year component) is thrown. Saxon (9.4.0.7) is evaluating code in a loop that not meant to be hit because there are no items in the collection. \<xsl:for-each select="$var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)]"> \<ElementToGenerateForEachItemInLoop> \<xsl:sequence select="xs:string(xs:dateTime(fn:concat(fn:string($var565_cur/NonExistingElement), 'T12:00:00Z')))"/> \</ElementToGenerateForEachItemInLoop> \</xsl:for-each> ------------------------------------------------------------------------ Sent from sourceforge.net because you indicated interest in https://sourceforge.net/p/saxon/support-requests/66/ To unsubscribe from further messages, please visit https://sourceforge.net/auth/subscriptions/ No virus found in this message. Checked by AVG - www.avg.com http://www.avg.com Version: 2014.0.4259 / Virus Database: 3684/7058 - Release Date: 02/03/14
    
    [support-requests:#66]
    http://sourceforge.net/p/saxon/support-requests/66/ for-each loops
    through empty collection
    
    Status: open
    Labels: for-each; loop; sequence; inner statement;
    Created: Tue Feb 04, 2014 11:30 AM UTC by Anonymous
    Last Updated: Tue Feb 04, 2014 11:30 AM UTC
    Owner: nobody
    
    In the following example the output of
    $var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)] is
    empty.
    Therefore there is nothing to loop through. Although Saxon is
    evaluating the inner statement which fails on xs:dateTime function.
    $var565_cur/NonExistingElement is not available and fn:string will
    return an empty string.
    
    The underneath exception: Invalid dateTime value "T12:00:00Z"
    (Non-numeric year component) is thrown.
    
    Saxon (9.4.0.7) is evaluating code in a loop that not meant to be hit
    because there are no items in the collection.
    
    \<xsl:for-each
    select="$var564_resultof_filter[fn:exists($var565_cur/NonExistingElement)]">
    \<ElementToGenerateForEachItemInLoop>
    \<xsl:sequence
    select="xs:string(xs:dateTime(fn:concat(fn:string($var565_cur/NonExistingElement),
    'T12:00:00Z')))"/>
    \</ElementToGenerateForEachItemInLoop>
    \</xsl:for-each>
    
    Sent from sourceforge.net because you indicated interest in
    https://sourceforge.net/p/saxon/support-requests/66/
    
    To unsubscribe from further messages, please visit
    https://sourceforge.net/auth/subscriptions/
    
    No virus found in this message.
    Checked by AVG - www.avg.com http://www.avg.com
    Version: 2014.0.4259 / Virus Database: 3684/7058 - Release Date: 02/03/14
    
    Related
    
    Support Requests: #66
    
    alternate
    
    If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
    
    Anonymous
    
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Anonymous - 2014-02-05

Hi oneil,

Thanks for fixing this bug so rapidly.
We will use an ugly workaround till the fix is released.

Can't stop saying it's great you fixed it this quick.

Thanks a million,
Wesley

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for-each loops through empty collection

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