Re: [Erlyaws-list] SOAP multiple namespaces / prefixes

[Tom H. <tom...@go...>]

Hi Steve:

1) I meant erlsoap, which Chandru uses in his suggestion:

<snip>
compile_wsdl(Wsdl, Wsdl_erlsoap_config) ->
    Header_file_name = filename:basename(Wsdl, ".wsdl") ++ ".hrl",
    Model_header_file_name = filename:basename(Wsdl, ".wsdl") ++
"_model.hrl",
    Model = erlsoap_lib:initModelFile(   <=========== HERE
Wsdl_erlsoap_config),
    ok = erlsoap_lib:write_hrl(Model, Header_file_name),  <==== HERE
    {ok, Iod} = file:open(Model_header_file_name, [write]),
    io:format(Iod, "-define(~s_MODEL, ~p).~n", [filename:basename(Wsdl,
".wsdl"), Model]),
    file:close(Iod),
<snip>

I already have erlsom which is a prereq for yaws SOAP support.

2) The problem was not with include_files in the config.  The problem was as
follows:
* My WSDL imports two XSDs
* The XSDs use different namespaces
* Both XSDs contain a declaration of Document element
* This is not a problem in XML because the namespace does what it's supposed
to and de-duplicates the names
* Running yaws_soap_lib:write_hrl against the WSDL results in all record
definitions using the same prefix P:, hence duplicate record names
'P:Document' with different structures
* Despite trying many different combinations of namespaces in the WSDL and
the (undocumented?) yaws_soap_config file (import_files), I was unable to
persuade yaws to generate record definitions with different prefixes for the
two imported XSDs.
* My fix was to enable the erlsom Options to be passed into yaws.  I passed
an include_fun thus:

findFile2(Namespace, Location, IncludeFiles, IncludeDirs) ->
  Map = [{"urn:iso:std:iso:20022:tech:xsd:pacs.008.001.02","ct"},
         {"urn:iso:std:iso:20022:tech:xsd:pacs.002.001.03","psr"}],
  case lists:keyfind(Namespace, 1, Map) of
    {_, Prefix} ->
        erlsom_lib:findFile(Namespace, Location,
[{Namespace,Prefix,undefined}], IncludeDirs);
    _ ->
        erlsom_lib:findFile(Namespace, Location, IncludeFiles, IncludeDirs)
  end.

and that fixed the problem - I get the ct: prefix on the pacs.008 namespace
records, and the psr: prefix on the pacs.002.

If you have a more elegant way of achieving the same result, I'd really
appreciate it !

Thanks
Tom.

On Mon, Aug 9, 2010 at 2:23 PM, Steve Vinoski <vi...@ie...> wrote:

> On Mon, Aug 9, 2010 at 9:15 AM, Tom Hay <tom...@go...> wrote:
> > I finally achieved what I needed, but it was hard work !
> >
> > I added a new function yaws_soap_lib:initModelOptions that allows me to
> pass
> > in erlsom options, instead of faking them in yaws_soap_lib:initModel2;
> also
> > a new function yaws_soap_srv:setupOptions that allows me to use the new
> > initialisation in the server.  That allowed me to pass in a custom
> > include_fun that applies the appropriate prefix for the namespaces I'm
> > interested in.  I'd be happy to contribute the code back to yaws if a
> > committer is interested.
> >
> > Chandru's suggestion gave me the clues I needed, but I struggled with it
> a)
> > because erlsoap is virtually unobtainable (sources seem to have vanished
> > from sourceforge) and b) because yaws scans the wsdl file and
> automatically
> > pulls in the xsd schemas, and doesn't seem to honour the include_files
> > options in the config file.
>
> Thanks for digging into this. Questions:
>
> 1. Did you mean erlsom, rather than erlsoap? If so, the erlsom sources are
> here:
>
> http://github.com/willemdj/erlsom
>
> 2. If there's a problem with include_files in the config file, do you
> think it would be preferable to fix that rather than adding new
> functions?
>
> --steve
>