Re: [saxon] No select expression for global variable!!

[Michael Kay <mike@sa...>]

> Same problem in 8.7.3.
> 
> Just a remark: the stylesheet in question has no global 
> variables or params, at least not explicitly.
> 

This really surprises me. Saxon only creates a GlobalParam object in two
situations: (a) in XSLT, for an xsl:param element appearing as a child of an
xsl:stylesheet element, and (b) in XQuery, for "declare variable ...
external".

So there's something pretty strange going on!

One reason this might happen when tracing is that when tracing is on, Saxon
evaluates all global variables eagerly, rather than waiting until the
variable is first referenced. This might cause variables to be evaluated
even if they are never referenced. One thing I will want to look at is
whether it's possibly causing a param to be evaluated even though it is
masked by a higher-precedence variable or param with the same name.

Michael Kay
http://www.saxonica.com/

Re: [saxon] No select expression for global variable!!

[Michael Kay <mike@sa...>]

This is an internal error reporting something that shouldn't happen, i.e.
it's prima facie evidence of a bug. In this case the run-time is reporting
what appears to be incorrect output of the compile-time phase, so it will
need a repro to get to the bottom of it.

IIRC correctly 8.7.2.3 was a "private" bug-fix build: have you tried this on
8.7.3? 

Michael Kay
Saxonica Limited

> -----Original Message-----
> From: saxon-help-bounces@... 
> [mailto:saxon-help-bounces@...] On Behalf 
> Of alan.painter@...
> Sent: 25 July 2006 17:13
> To: saxon-help@...
> Subject: [saxon] No select expression for global variable!!
> 
> 
> When turning on the "trace" function, I'm running into the 
> following error and message.  Any ideas?
> 
> trace saxon-version="8.7.2.3" xmlns:xsl="
> http://www.w3.org/1999/XSL/Transform">;
> $$2006-07-25 17:27:53,333
> |ERROR|com.sgcib.fsi.fsio|(FsioBatchMain.java.main:75)|Error in
> transformation: Global AllTra Paring.  Rolling back ...
> java.lang.AssertionError: *** No select expression for global 
> variable!!
>       at net.sf.saxon.instruct.GlobalVariable.getSelectValue(
> GlobalVariable.java:170)
>       at net.sf.saxon.instruct.GlobalParam.evaluateVariable(
> GlobalParam.java:58)
>       at 
> net.sf.saxon.Controller.preEvaluateGlobals(Controller.java:1613)
>       at 
> net.sf.saxon.Controller.transformDocument(Controller.java:1522)
>       at net.sf.saxon.Controller.transform(Controller.java:1389)
> 
> **************************************************************
> ***********
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> confidential and intended solely for the addressee(s).
> Any unauthorised use or dissemination is prohibited. E-mails 
> are susceptible to alteration.   
> Neither SOCIETE GENERALE nor any of its subsidiaries or 
> affiliates shall be liable for the message if altered, 
> changed or falsified.
>                               ************ Ce message et 
> toutes les pieces jointes (ci-apres le "message") sont 
> confidentiels et etablis a l'intention exclusive de ses 
> destinataires. Toute utilisation ou diffusion non autorisee 
> est interdite. Tout message electronique est susceptible 
> d'alteration. 
> La SOCIETE GENERALE et ses filiales declinent toute 
> responsabilite au titre de ce message s'il a ete altere, 
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Re: [saxon] No select expression for global variable!!

[<alan.painter@sg...>]

Same problem in 8.7.3.

Just a remark: the stylesheet in question has no global variables or
params, at least not explicitly.



                                                                           
             Alan                                                          
             PAINTER/fr/socgen                                             
                                                                        To 
             07/25/06 06:13 PM         saxon-help@...    
                                                                        cc 
                                                                           
                                                                   Subject 
                                       No select expression for global     
                                       variable!!(Document link: Alan      
                                       PAINTER)                            
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




When turning on the "trace" function, I'm running into the following error
and message.  Any ideas?

trace saxon-version="8.7.2.3" xmlns:xsl="
http://www.w3.org/1999/XSL/Transform">;
$$2006-07-25 17:27:53,333
|ERROR|com.sgcib.fsi.fsio|(FsioBatchMain.java.main:75)|Error in
transformation: Global AllTra Paring.  Rolling back ...
java.lang.AssertionError: *** No select expression for global variable!!
      at net.sf.saxon.instruct.GlobalVariable.getSelectValue(
GlobalVariable.java:170)
      at net.sf.saxon.instruct.GlobalParam.evaluateVariable(
GlobalParam.java:58)
      at net.sf.saxon.Controller.preEvaluateGlobals(Controller.java:1613)
      at net.sf.saxon.Controller.transformDocument(Controller.java:1522)
      at net.sf.saxon.Controller.transform(Controller.java:1389)


*************************************************************************
This message and any attachments (the "message") are confidential and intended solely for the addressee(s).
Any unauthorised use or dissemination is prohibited. E-mails are susceptible to alteration.   
Neither SOCIETE GENERALE nor any of its subsidiaries or affiliates shall be liable for the message if altered, changed or falsified.
                              ************
Ce message et toutes les pieces jointes (ci-apres le "message") sont confidentiels et etablis a l'intention exclusive de ses
destinataires. Toute utilisation ou diffusion non autorisee est interdite. Tout message electronique est susceptible d'alteration. 
La SOCIETE GENERALE et ses filiales declinent toute responsabilite au titre de ce message s'il a ete altere, deforme ou falsifie.
*************************************************************************

Re: [saxon] No select expression for global variable!!

[Michael Kay <mike@sa...>]

> Same problem in 8.7.3.
> 
> Just a remark: the stylesheet in question has no global 
> variables or params, at least not explicitly.
> 

This really surprises me. Saxon only creates a GlobalParam object in two
situations: (a) in XSLT, for an xsl:param element appearing as a child of an
xsl:stylesheet element, and (b) in XQuery, for "declare variable ...
external".

So there's something pretty strange going on!

One reason this might happen when tracing is that when tracing is on, Saxon
evaluates all global variables eagerly, rather than waiting until the
variable is first referenced. This might cause variables to be evaluated
even if they are never referenced. One thing I will want to look at is
whether it's possibly causing a param to be evaluated even though it is
masked by a higher-precedence variable or param with the same name.

Michael Kay
http://www.saxonica.com/