XML::Compile::SOAP11(3) SOAP 1.1 protocol

INHERITANCE

 XML::Compile::SOAP11 has extra code in
   XML::Compile::SOAP11::Encoding
 XML::Compile::SOAP11
   is a XML::Compile::SOAP
 XML::Compile::SOAP11 is extended by
   XML::Compile::SOAP11::Client
   XML::Compile::SOAP11::Server

SYNOPSIS


# use either XML::Compile::SOAP11::Client or ::Server
# See XML::Compile::SOAP for global usage examples.

DESCRIPTION

This module handles the SOAP protocol version 1.1. See http://www.w3.org/TR/2000/NOTE-SOAP-20000508/). The implementation tries to behave like described in http://www.ws-i.org/Profiles/BasicProfile-1.0.html

Two extensions are made: the SOAP11 client XML::Compile::SOAP11::Client. and server in XML::Compile::SOAP11::Server.

Extends ``DESCRIPTION'' in XML::Compile::SOAP.

METHODS

Extends ``METHODS'' in XML::Compile::SOAP.

Constructors

Extends ``Constructors'' in XML::Compile::SOAP.
$obj->new(%options)
To simplify the URIs of the actors, as specified with the "destination" option, you may use the STRING "NEXT". It will be replaced by the right URI. 

 -Option    --Defined in        --Default
  media_type  XML::Compile::SOAP  text/xml
  schemas     XML::Compile::SOAP  created internally
media_type => MIMETYPE
schemas => "XML::Compile::Cache" object
XML::Compile::SOAP11->register($uri, $envns)
Inherited, see ``Constructors'' in XML::Compile::SOAP

Accessors

Extends ``Accessors'' in XML::Compile::SOAP.
$obj->mediaType()
Inherited, see ``Accessors'' in XML::Compile::SOAP
$obj->schemas()
Inherited, see ``Accessors'' in XML::Compile::SOAP
$obj->version()
Inherited, see ``Accessors'' in XML::Compile::SOAP

Single message

Extends ``Single message'' in XML::Compile::SOAP.
$obj->compileMessage( <'SENDER'|'RECEIVER'>, %options )
 -Option        --Defined in        --Default
  body            XML::Compile::SOAP  []
  destination     XML::Compile::SOAP  []
  faults          XML::Compile::SOAP  []
  header          XML::Compile::SOAP  undef
  headerfault                         []
  mustUnderstand  XML::Compile::SOAP  []
  procedure       XML::Compile::SOAP  undef
  role            XML::Compile::SOAP  ULTIMATE
  roles           XML::Compile::SOAP  []
body => ENTRIES|HASH
destination => ARRAY-OF-PAIRS
faults => ENTRIES|HASH
header => ENTRIES|HASH
headerfault => ENTRIES
ARRAY of simple name with element references, for all expected faults. There can be unexpected faults, which will not get decoded automatically.
mustUnderstand => STRING|ARRAY-OF-STRING
procedure => TYPE
role => URI|ARRAY-OF-URI
roles => ARRAY-OF-URI
$obj->messageStructure($xml)
XML::Compile::SOAP11->messageStructure($xml)
Inherited, see ``Single message'' in XML::Compile::SOAP

Helpers

Extends ``Helpers'' in XML::Compile::SOAP.

Transcoding

Extends ``Transcoding'' in XML::Compile::SOAP.
$obj->replyMustUnderstandFault($type)
Inherited, see ``Transcoding'' in XML::Compile::SOAP
$obj->roleAbbreviation($uri)
Inherited, see ``Transcoding'' in XML::Compile::SOAP
$obj->roleURI($uri|STRING)
Inherited, see ``Transcoding'' in XML::Compile::SOAP

DETAILS

Extends ``DETAILS'' in XML::Compile::SOAP.

SOAP introduction

Extends ``SOAP introduction'' in XML::Compile::SOAP.

Supported servers

Extends ``Supported servers'' in XML::Compile::SOAP.

Naming types and elements

Extends ``Naming types and elements'' in XML::Compile::SOAP.

Client and Server implementations

Extends ``Client and Server implementations'' in XML::Compile::SOAP.

Use of wildcards (any and anyAttribute)

Extends ``Use of wildcards (any and anyAttribute)'' in XML::Compile::SOAP.

Header and Body entries

You only call compileMessage() explicitly if you do not have a WSDL file which contains this information. In the unlucky situation, you have to dig out the defined types by hand.

But even with a WSDL, there are still a few problems you may encounter. For instance, the WSDL will not contain "mustUnderstand" and "actor" header routing information. You can add these to the compileClient call 

  my $call = $wsdl->compileClient
    ( 'MyCall'
    , mustUnderstand => 'h1'
    , destination    => [ h1 => 'NEXT' ]
    );

Simplest form

In the simplest form, the "header" and "body" refer (optionally) to a list of PAIRS, each containing a free to choose unique label and the type of the element. The unique label will be used in the Perl HASH which represents the message. 

 my $h1el = pack_type $myns, $some_local;
 my $b1el = 'myprefix:$other_local';
 my $encode_query = $client->compileMessage
   ( 'SENDER'
   , header   => [ h1 => $h1el ]
   , body     => [ b1 => $b1el ]
   , mustUnderstand => 'h1'
   , destination    => [ h1 => 'NEXT' ]
   );

Most powerful form

When the simple form is too simple, you can use a HASH for the header, body or both. The HASH structure is much like the WSDL structure. For example: 

 my $encode_query = $client->compileMessage
   ( 'SENDER'
   , header   =>
      { use   => 'literal'
      , parts => [ { name => 'h1', element => $h1el
                   , mustUnderstand => 1, destination => 'NEXT'
                   } ]
      }
   , body     => [ b1 => $b1el ]
   );

So, the header now is one HASH, which tells us that we have a literal definition (this is the default). The optional parts for the header is an ARRAY of HASHes, each describing one part. As you can see, the mustUnderstand and destination fields are more convenient (although the other syntax will work as well).

If you feel the need to control the compilation of the various parts, with hooks or options (see XML::Compile::Schema::compile()), then have a look at XML::Compile::Cache::declare(). Declare how to handle the various types before you call compileMessage().

Receiving faults in SOAP1.1

When faults are received, they will be returned with the "Fault" key in the data structure. So: 

  my $answer = $call->($question);
  if($answer->{Fault}) { ... }

As extra service, for each of the fault types, as defined with compileMessage(faults), a decoded structure is included. The name of that structure can be found like this: 

  if(my $faults = $answer->{Fault})
  {   my $name    = $faults->{_NAME};
      my $decoded = $answer->{$name};
      ...
  }

The untranslated $faults HASH looks like this: 

 Fault =>
   { faultcode => '{http://schemas.xmlsoap.org/soap/envelope/}Server.first'
   , faultstring => 'my mistake'
   , faultactor => 'http://schemas.xmlsoap.org/soap/actor/next'
   , detail => { '{http://test-types}fault_one' => [ XMLNODES ] }
   , _NAME => 'fault1'
   }

The "_NAME" originates from the compileMessage(faults) option: 

   $soap->compileMessage('RECEIVER', ...
     , faults => [ fault1 => '{http://test-types}fault_one' ] );

Now, automatically the answer will contain the decoded fault structure as well: 

  fault1 =>
    { code => '{http://schemas.xmlsoap.org/soap/envelope/}Server.first'
    , class  => [ 'http://schemas.xmlsoap.org/soap/envelope/'
         , 'Receiver', 'first' ]
    , reason => 'my mistake',
    , role   => 'NEXT'
    , detail => { help => 'please ignore' }
    }

The "detail" is the decoding of the XMLNODES, which are defined to be of type "{http://test-types}fault_one".

The "class" is an unpacked version of the code. SOAP1.2 is using the (better) terms "Sender" and "Receiver".

"role" is constructed by decoding the "faultactor" using roleAbbreviation(). The names are closer to the SOAP1.2 specification.

If the received fault is of an unpredicted type, then the client tries to DWIM. in the worst case, "detail" will list the unparsed XMLNODEs. When the XML::Compile::SOAP::Daemon server has produced the error, the content of the reply will typically be 

 { Fault =>        # SOAP version specific
    { _NAME => 'error'
    , #...more...
    }
 , error =>        # less SOAP version specific, readable
    { role    => 'NEXT'
    , reason  => 'procedure xyz for SOAP11 produced an invalid response'
    , error   => 'some explanation'
    , code    =>
        '{http://schemas.xmlsoap.org/soap/envelope/}Server.invalidResponse'
    , class   => [ SOAP11ENV, 'Receiver', 'invalidResponse' ],
    }
  }

Hence, a typical client routine could contain 

  my ($answer, $trace) = $call->(message => $message);
  if(my $f = $answer->{Fault})
  {   if($f->{_NAME} eq 'error')
      {   # server implementation error
          die "SERVER ERROR:\n$answer->{error}{error}\n";
      }
      else
      {   # the fault is described in the WSDL, handle it!
          warn "FAULT:\n",Dumper $answer->{$f->{_NAME}};
      }
  }
  else
  {   # correct answer
      print Dumper $answer;
  }

Or 

  my ($answer, $trace) = $call->(message => $message);
  $answer or die $trace->error;

LICENSE

Copyrights 2007-2016 by [Mark Overmeer]. For other contributors see ChangeLog.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://www.perl.com/perl/misc/Artistic.html

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