Re: [xsl] passing parameters to XSL,what if no value in some cases

[himanshu padmanabhi <himanshu.padmanabhi@xxxxxxxxx>]

Thank you all.If I passed arguments using hash %params.How to access
them in XSL file,
I tried this,but got error.
   <xsl:param name="args" select="$params{$args}" />
   <xsl:param name="val" select="$params{$val}" />
   <xsl:param name="newl" select="$params{$new}" />

What are the advantages of passing it using hash?

On Fri, Mar 6, 2009 at 7:10 PM, Nic Gibson <nicg@xxxxxxxxxx> wrote:
>
> 2009/3/6 himanshu padmanabhi <himanshu.padmanabhi@xxxxxxxxx>:
> > First time,code will go to 'else' part,it again returns to this form
> > and 'if' part executes.
> >
> > <CODE>
> >         my $parser = XML::LibXML->new();
> >         my $xslt = XML::LibXSLT->new();
> >
> >         my $source = $parser->parse_file($xmlfile);
> >         my $style_doc = $parser->parse_file($xslfile);
> >
> >         my $stylesheet = $xslt->parse_stylesheet($style_doc);
> >         if($in{'flag'} eq "2") {
> >             my $results = $stylesheet->transform($source,
> > XML::LibXSLT::xpath_to_string(args => "$in{'args'}",val => "1",new =>
> > "$in{'new'}"));
> >             print $stylesheet->output_string($results);
> >         }else{
> >             my $results = $stylesheet->transform($source,
> > XML::LibXSLT::xpath_to_string(args => "",val => "3",new =>
> > "$in{'new'}"));
> >             print $stylesheet->output_string($results);
> >         }
> > </CODE>
> >
> > 1.In my 'else' above,I don't want to pass 'args'(can I do it?),
> >
> > 2.How can I check in my xsl file whether it is passed or not probably
> > using some 'if' statement or something like this?
> > <CODE>
> >    <xsl:choose>
> >    <xsl:when test="args_is_given">
> >         <some code>
> >    </xsl:when>
> >    </xsl:choose>
> > </CODE>
>
> If you were to choose to use a sensible default parameter as suggested
> by Michael Kay
> then you could rewrite that perl to be a little simpler and avoid
> passing the redundant arg. Something like:
>
> my $parser = XML::LibXML->new();
> my $xslt = XML::LibXSLT->new();
>
> my $source = $parser->parse_file($xmlfile);
> my $style_doc = $parser->parse_file($xslfile);
>
> my $stylesheet = $xslt->parse_stylesheet($style_doc);
>
> # The quotes around your args are redundant unless
> # the values are actually objects not scalar data.
> my %params = (
>  val => XML::LibXSLT::xpath_to_string(1),
>  new =>  XML::LibXSLT::xpath_to_string($in{'new'})
> );
>
> # I changed this to a numeric comparison
> # (this may be wrong in your case).
> $params{'args'} = XML::LibXST::xpath_to_string($in{'args'}) if $in{'flag'}
== 2;
>
> my $results = $stylesheet->transform($source, %params);
> print $stylesheet->output_string($results);
>
>
> I don't tend to write that exact code myself. I usually have a function to
> set up the arguments but your mileage may vary...
>
> cheers
>
> nic
>
> --
> Nic Gibson
> Director, Corbas Consulting
> Editorial and Technical Consultancy
> http://www.corbas.co.uk/
>



--
Regards,
Himanshu Padmanabhi