Xalan Interceptor?

["Timm, Sean" <ST...@mailgo.com>]

Is there a way to write some sort of plug-in extension to Xalan that
intercepts the resultant output of an <xsl:template> match for manipulation
purposes prior to writing it to the stream?  For example, let's say I have
the following XSL snippet:

...
<xsl:template match="Name">
   <b>Name: <xsl:value-of select="."/></b>
</xsl:template>
...

I'd like to intercept the output of "<b>Name: Joe Blow</b>" and manipulate
it by embedding <em> tags around it.  (This is a very simplified
example...suffice it to say that the decision of which matched elements to
manipulate depends on some back-end Java code.)  I'll never know which
elements I need to manipulate until I've seen the XML.

Is this possible?

Thanks for your help!

- Sean T.

Re: Xalan Interceptor?

[Gary L Peskin <ga...@firstech.com>]

Sean --

I would think that you could surround your template contents with an
xsl:variable element to assign the contents of the template to a
variable.  Then, you could pass that variable into an extension function
to manipulate it in java and return the result you wanted to see. 
Something like:

<xsl:template match="Name">
  <xsl:variable name="templResult">
    <b>Name: <xsl:value-of select="."/></b>
  </xsl:variable>
  <xsl:copy-of select="myExt:myFunc($templResult)">
</xsl:template>

Haven't tested this but will this accomplish what you need?

Gary

"Timm, Sean" wrote:
> 
> Is there a way to write some sort of plug-in extension to Xalan that
> intercepts the resultant output of an <xsl:template> match for manipulation
> purposes prior to writing it to the stream?  For example, let's say I have
> the following XSL snippet:
> 
> ...
> <xsl:template match="Name">
>    <b>Name: <xsl:value-of select="."/></b>
> </xsl:template>
> ...
> 
> I'd like to intercept the output of "<b>Name: Joe Blow</b>" and manipulate
> it by embedding <em> tags around it.  (This is a very simplified
> example...suffice it to say that the decision of which matched elements to
> manipulate depends on some back-end Java code.)  I'll never know which
> elements I need to manipulate until I've seen the XML.
> 
> Is this possible?
> 
> Thanks for your help!
> 
> - Sean T.

RE: Xalan Interceptor?

[Ed Staub <es...@mediaone.net>]

Sean,
Are you doing this under Cocoon?
This strikes me as the kind of pipeline processing that it's made for.
-Ed Staub

-----Original Message-----
From: Timm, Sean [mailto:STimm@mailgo.com]
Sent: Wednesday, July 19, 2000 12:46 PM
To: 'xalan-dev@xml.apache.org'
Subject: Xalan Interceptor?


Is there a way to write some sort of plug-in extension to Xalan that
intercepts the resultant output of an <xsl:template> match for manipulation
purposes prior to writing it to the stream?  For example, let's say I have
the following XSL snippet:

...
<xsl:template match="Name">
   <b>Name: <xsl:value-of select="."/></b>
</xsl:template>
...

I'd like to intercept the output of "<b>Name: Joe Blow</b>" and manipulate
it by embedding <em> tags around it.  (This is a very simplified
example...suffice it to say that the decision of which matched elements to
manipulate depends on some back-end Java code.)  I'll never know which
elements I need to manipulate until I've seen the XML.

Is this possible?

Thanks for your help!

- Sean T.