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Re: Fwd: [xsl] curly braces


Subject: Re: Fwd: [xsl] curly braces
From: Ihe Onwuka <ihe.onwuka@xxxxxxxxxxxxxx>
Date: Thu, 20 Sep 2012 01:27:42 +0100

You may wish to try the code I sent you on saxonhe-9.2.1.1.

I predict (don't know for sure because you are running a cut down
version of the code) the following

; SystemID: ; Line#: 10; Column#: -1
net.sf.saxon.trans.XPathException: Failed to load document
        at net.sf.saxon.expr.Expression.dynamicError(Expression.java:961)

where Line 10 is

<xsl:variable name="this" as="node()" select="doc('')"/>

Also try by substituting the above with the document function instead
of doc, you may see different behaviour.

On Thu, Sep 20, 2012 at 12:11 AM, Michael Kay <mike@xxxxxxxxxxxx> wrote:
> Ihe,
>
> Your stylesheet contains the element
>
>
> <this:fieldName elem="productThumbnail" plural="thumbnails"
> bracketType="{{"/>
>
> as part of the definition of a global variable. If this is executed as a
> literal result element the result will be the element
>
>
> <this:fieldName elem="productThumbnail" plural="thumbnails"
> bracketType="{"/>
>
> (with a single "{").
>
> But you are not executing it as a literal result element, you are reading it
> from the source XML of the stylesheet using the function call doc(''). In
> elements read from source documents, curly braces have no special
> significance, so "{{" represents itself. If the element were in a normal
> source document, then bracketType="{" would work fine, but because the
> element has a dual role (as an element in a source document and as a literal
> result element in a stylesheet), bracketType="{" is an error.
>
> The idea of reading the source document using document('') is a hack used in
> XSLT 1.0 to get around the restrictions on using result tree fragments. It
> is never needed in XSLT 2.0: use the global variable directly. (It's also a
> very inefficient hack, because the stylesheet has to be parsed twice.)
>
> Michael Kay
> Saxonica
>
>
>
> On 19/09/2012 12:03, Michael Kay wrote:
>>
>> Could you please construct a complete example that demonstrates the
>> problem? We haven't been able to reproduce it.
>>
>> (Ideally, product-specific issues shouldn't really go on this list.
>> But now the thread is started here, perhaps it's best to keep it here.)
>>
>> Michael Kay
>> Saxonica
>>
>> On 19/09/2012 11:47, Ihe Onwuka wrote:
>>>
>>> The version that comes with Kernow. Saxon HE 9.3.0.5
>>>
>>> On Wed, Sep 19, 2012 at 11:42 AM, O'Neil Delpratt
>>> <oneil@xxxxxxxxxxxx> wrote:
>>>>
>>>> Hi,
>>>>
>>>> According to the specification a single curly bracket is not allowed
>>>> in an attribute. Please see:
>>>>
>>>> http://www.w3.org/TR/xslt20/#attribute-value-templates
>>>>
>>>> In Saxon 9.4.0.5 the bracket {{ is replaced by the single bracket {,
>>>> which is correct.
>>>> Which version of Saxon are you using?
>>>>
>>>>
>>>>
>>>>
>>>> -------- Original Message --------
>>>> Subject: [xsl] curly braces
>>>> Date: Wed, 19 Sep 2012 04:19:53 +0100
>>>> From: Ihe Onwuka <ihe.onwuka@xxxxxxxxxxxxxx>
>>>> Reply-To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
>>>> To: xsl-list <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
>>>>
>>>>
>>>> Not sure whether this is a saxon or XSLT issue (or just me for that
>>>> matter).
>>>>
>>>> Saxon wouldn't allow me to  set the bracketType attrtibute to "{"
>>>> (Unexpected token "<eof>" in path expression)
>>>>
>>>>      <xsl:variable name="fieldNames" as="element()*">
>>>>         <this:fieldName elem="product" plural="products"
>>>> bracketType="["/>
>>>>         <this:fieldName elem="productThumbnail" plural="thumbnails"
>>>> bracketType="{{"/>
>>>>      </xsl:variable
>>>>
>>>> so I set it to "{{" as above, which Saxon accepts but inserts {{ into
>>>> my result tree instead of {.
>>>>
>>>> I have a workaround (substring the bracketType attribute) but would
>>>> like an explanation please.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> kind regards,
>>>>
>>>> --
>>>> O'Neil Delpratt
>>>> Software Developer, Saxonica Limited
>>>> Email: oneil@xxxxxxxxxxxx
>>>> Tel: +44 118 946 5894
>>>> Web: http://www.saxonica.com
>>>> Saxonica Community Site: http://dev.saxonica.com


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