[Soaplite-devel] c-gensym

[Robbie B. <rob...@gm...>]

Hello all

I'm attempting to write up some examples for a tutorial / quickstart
guide and am currently deriving examples of clients for doc/lit style
services. Here's the first example:

use SOAP::Lite +trace;
use strict;

my $uri = 'http://www.webserviceX.NET';
my $url = 'http://www.webservicex.net/globalweather.asmx';

my $client = SOAP::Lite
       -> uri($uri)
       -> on_action( sub { join '/', $uri, $_[1] } )
       -> proxy($url)
       -> autotype(0)
       -> readable(1);


my $args = { CityName    => 'Cambridge',
             CountryName => 'United Kingdom',
           };

$client->GetWeather($args)->attr({xmlns => $uri});

However, the XML this sends to the service is thus:

<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
    xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <GetWeather xmlns="http://www.webserviceX.NET">
      <c-gensym3>
        <CountryName>United Kingdom</CountryName>
        <CityName>Cambridge</CityName>
      </c-gensym3>
    </GetWeather>
  </soap:Body>
</soap:Envelope>

Note the c-gensym3 wrapper around my arguments, which causes the
request to fail. I get around this with this:

use SOAP::Lite +trace;
use strict;

my $uri = 'http://www.webserviceX.NET';
my $url = 'http://www.webservicex.net/globalweather.asmx';

my $client = SOAP::Lite
       -> uri($uri)
       -> on_action( sub { join '/', $uri, $_[1] } )
       -> proxy($url)
       -> autotype(0)
       -> readable(1);

my $args = { CityName    => 'Cambridge',
             CountryName => 'United Kingdom',
           };

my $data   = handroll($args);

$client->GetWeather($data)->attr({xmlns => $uri});

sub handroll {
  my $hash = shift;
  my @array;
  while(my($key,$value) = each %$hash) {
    push @array, SOAP::Data->name($key)->value($value);
  }
  return \@array;
}

Which produces the following XML:

<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
    xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <GetWeather xmlns="http://www.webserviceX.NET">
      <CountryName>United Kingdom</CountryName>
      <CityName>Cambridge</CityName>
    </GetWeather>
  </soap:Body>
</soap:Envelope>

Note now there is no c-gensym wrapper, and the service accepts the
request and returns my results as expected (try it, it's a valid
working service). The question I have is: is there a more elegant way
to avoid the c-gensym wrapper and, if not, might it be a good idea to
add such a way to S::L?

Cheers



Robbie