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Re: Newbie Question: Creating Error Description from

Subject: Re: Newbie Question: Creating Error Description from Invalid Input
From: Richard Lewis <richardlewis@xxxxxxxxxxxxxx>
Date: Fri, 13 Oct 2006 16:30:59 +0100
Re:  Newbie Question: Creating Error Description from
On Friday 13 October 2006 15:20, Badari wrote:
> I am a newbie to XSL and am hoping that somebody can help me with the
> following scenario. I tried to use xsl:variable but was not successful. :(
>
> I have an "errorDescription" element in the target structure. Depending on
> the error condition result on input fields, I have to concatenate the field
> names (that are in error) and post them to the errorDescription field.
>
> How can I do it?  Any help is appreciated.
>
> sample input.
>
> <request>
>  <header>
>   <address1>1234</address1>
>   <address2></address2>
>   <address3>3456</address3>
>   <address4></address4>
>  </header>
> </request>
>
> If all address elements are expected to have values, and 2nd and 4th don't
> have values the output file should look like:
>
> <response>
>  <header>
>   <address1>1234</address1>
>   <address3>3456</address3>
>   <errorDescription>Invalid Elements: Address2,Address4</errorDescription
>  </header>
> </response>
>

<xsl:template match="header">
  <header>
    <xsl:apply-templates mode="valid" />
  </header>
  <errorDescription>
    <xsl:apply-templates mode="invalid" />
  </errorDescription>
</xsl:template>

<xsl:template match="*" mode="valid">
  <xsl:if test="string(.)!=''">
    <xsl:element name="name()">
      <xsl:apply-templates />
    </xsl:element>
  </xsl:if>
</xsl:template>

<xsl:template match="*" mode="invalid">
  <xsl:if test="string(.)=''">
    <xsl:value-of select="name()" />
    <xsl:if test="position()!=last()">; </xsl:if>
  </xsl:if>
</xsl:template>

I haven't tested it.

If there is a XPath expression to match elements by whether they have any text 
content or not which would be better:

<xsl:template match="header">
  <header>
    <xsl:apply-templates select="all address* children with content" />
  </header>
  <xsl:if test="count(all address* children without content) &gt; 0">
    <errorDescription>
      <xsl:value-of select="all address* children without content" />
    </errorDescription>
  </xsl:if>
</xsl:template>

Any ideas if such an XPath exists?

Cheers,
Richard
-- 
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Richard Lewis
Sonic Arts Research Archive
http://www.sara.uea.ac.uk/
JID: ironchicken@xxxxxxxxxxxxxxx
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

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