[Barcode4j-users] Re: [barcode4j] question / issue with Barcode / FOP

[Jeremias M. <dev...@gr...>]

Hello Daniel

On 19.07.2004 20:05:42 Daniel Greene wrote:
> I'm trying to use Barcode with FOP.  Sounds simple enough, as the example xsl seems to work. 
> However, I cannot substiture variable values in for the barcode message:
> 
> <xsl:variable name="testit" select="FIELD_FROM_XML" />
> 
> <barcode:barcode xmlns:barcode="http://www.krysalis.org/barcode/ns" msg="$testit" >
> .....
> </barcode>
> 
> what I get is a barcode with literally "$testit" as the text.

Yes, because you forgot the enclosing curly braces: msg="{$testit}"

(See http://www.w3.org/TR/xslt#attribute-value-templates)

An alternative is to do this:

<barcode:barcode xmlns:barcode="http://www.krysalis.org/barcode/ns">
  <xsl:attribute name="msg">
    <xsl:value-of select="$testit"/>
  </xsl:attribute>

> I tried the other way of generating them shown in the example section, with the 
> 
> <xsl:variable name="block">
> <barcode>
>   <ean-13/>
> </barcode>
> </xsl:variable>
> 
> and later with
> <xsl:copy-of select="barcode:generate($block,'test')" />
> 
> 
> I get a 'Function not supported' error....

Here, you probably forgot to declare the barcode: namespace prefix.
Check the instructions here:
http://barcode4j.krysalis.org/xalan-ext.html#Using+the+barcode+extension+for+Apache+Xalan

I hope this helps.

Jeremias Maerki