bug#10331: Feature request: SOAP simpleType

[Ken Harris]

Hi, emacs!  I hope this is the right place to send feature requests.

I've been playing with Emacs 24's soap-client.el library, which is a
fantastic concept.

The "soap-load-wsdl-from-url" function seems to work in some cases,
but not in others.  I am certainly not an expert on SOAP or
soap-client but one thing that I've discovered is that it does not
seem to know about "simpleType".  (The term "simpleType" does not
appear in the source code.  The function soap-parse-schema looks at
only xsd:complexType and xsd:element.)

Here's an example of a WSDL that fails on a simpleType (called "AdultOption"):

    (soap-load-wsdl-from-url "http://api.search.live.net/search.wsdl";)

Rather than parsing and returning a WSDL object, it gives a backtrace.
 Here's the top of it (the interesting part):

Debugger entered--Lisp error: (error
"Soap-wsdl-get((http://schemas.microsoft.com/LiveSearch/2008/03/Search
. AdultOption)): cannot find element")
  signal(error 
("Soap-wsdl-get((http://schemas.microsoft.com/LiveSearch/2008/03/Search
. AdultOption)): cannot find element"))
  error("Soap-wsdl-get(%s): cannot find element"
("http://schemas.microsoft.com/LiveSearch/2008/03/Search"; .
"AdultOption"))
  (if element nil (error "Soap-wsdl-get(%s): cannot find element" name))
  (unless element (error "Soap-wsdl-get(%s): cannot find element" name))
  (let ((alias-table ...) namespace element-name element) (when
(symbolp name) (setq name ...)) (when use-local-alias-table (setq
alias-table ...)) (cond (... ... ... ... ...) (... ... ...) (t ...))
(setq element (soap-namespace-get element-name namespace ...)) (unless
element (error "Soap-wsdl-get(%s): cannot find element" name)) (if
(soap-namespace-link-p element) (soap-wsdl-get ... wsdl predicate)
element))
  soap-wsdl-get(("http://schemas.microsoft.com/LiveSearch/2008/03/Search";
. "AdultOption") [cl-struct-soap-wsdl nil ([cl-struct-soap-port
"BingPort" nil "http://api.search.live.net:80/soap.asmx"; ...]) (("ns1"
. "urn:BingPortType") ("soapenc" .
"http://schemas.xmlsoap.org/soap/encoding/";) ("xsd" .
"http://www.w3.org/2001/XMLSchema";) ("tns" .
"http://schemas.microsoft.com/LiveSearch/2008/03/Search";) ("wsa" .
"http://schemas.xmlsoap.org/ws/2004/08/addressing";) ("wsdl" .
"http://schemas.xmlsoap.org/wsdl/";) ("soap" .
"http://schemas.xmlsoap.org/wsdl/soap/";) ("xsi" .
"http://www.w3.org/2001/XMLSchema-instance";) ("xsd" .
"http://www.w3.org/2001/XMLSchema";)) ([cl-struct-soap-namespace
"urn:BingPortType" #s(hash-table size 65 test equal rehash-size 1.5
rehash-threshold 0.8 data ("Search" ... "SearchRequestMessage" ...
"SearchResponseMessage" ... ...))] [cl-struct-soap-namespace
"http://schemas.microsoft.com/LiveSearch/2008/03/Search"; #s(hash-table
size 65 test equal rehash-size 1.5 rehash-threshold 0.8 data
("SearchRequest" ... "ArrayOfSearchOption" ... "ArrayOfSourceType" ...
"WebRequest" ... "ArrayOfWebSearchOption" ... "ArrayOfString" ...
"ImageRequest" ... "PhonebookRequest" ... "VideoRequest" ...
"NewsRequest" ... "MobileWebRequest" ...
"ArrayOfMobileWebSearchOption" ... "TranslationRequest" ...
"SearchResponse" ... "Query" ... "SpellResponse" ...
"ArrayOfSpellResult" ... "SpellResult" ... "WebResponse" ...
"ArrayOfWebResult" ... "WebResult" ... "ArrayOfWebSearchTag" ...
"WebSearchTag" ... "ArrayOfDeepLink" ... "DeepLink" ...
"ImageResponse" ... "ArrayOfImageResult" ... "ImageResult" ...
"Thumbnail" ... "RelatedSearchResponse" ...
"ArrayOfRelatedSearchResult" ... "RelatedSearchResult" ...
"PhonebookResponse" ... "ArrayOfPhonebookResult" ... "PhonebookResult"
... "VideoResponse" ... "ArrayOfVideoResult" ... "VideoResult" ...
"InstantAnswerResponse" ... "ArrayOfInstantAnswerResult" ...
"InstantAnswerResult" ... "NewsResponse" ...
"ArrayOfNewsRelatedSearch" ... "NewsRelatedSearch" ...
"ArrayOfNewsResult" ... "NewsResult" ... "ArrayOfNewsCollection" ...
"NewsCollection" ... "ArrayOfNewsArticle" ... "NewsArticle" ... ...))]
[cl-struct-soap-namespace "http://schemas.xmlsoap.org/soap/encoding/";
#s(hash-table size 65 test equal rehash-size 1.5 rehash-threshold 0.8
data ("string" ... "dateTime" ... "boolean" ... "long" ... "int" ...
"integer" ... "byte" ... "float" ... "base64Binary" ... "anyType" ...
"anyURI" ... "Array" ... "byte[]" ... ...))] [cl-struct-soap-namespace
"http://www.w3.org/2001/XMLSchema"; #s(hash-table size 65 test equal
rehash-size 1.5 rehash-threshold 0.8 data ("string" ... "dateTime" ...
"boolean" ... "long" ... "int" ... "integer" ... "byte" ... "float"
... "base64Binary" ... "anyType" ... "anyURI" ... "Array" ... "byte[]"
... ...))])] soap-type-p)

[...and more...]

I've found that with my own application's WSDL, if I comment out all
uses of simpleType, then soap-client.el can load it just fine.

I have no idea how hard it would be to implement simpleType, but it
would definitely be very useful!  I may take a stab at this myself,
but no promises.


- Ken