From: Brian Marick <marick@...>
Date: 2003-11-07T10:19:22+09:00
Subject: WSDL parse failure (ruby 1.8.1-preview2, soap4r-1_5_1)

The Ruby wsdl library doesn't seem to be able to parse the
GoogleSearch.wsdl file (http://api.google.com/GoogleSearch.wsdl).


I am using ruby 1.8.1-preview2. This problem happens both with the
pre-installed wsdl code and the code from soap4r-1_5_1.

Here's the symptom when I run the googleSearch/wsdlDriver example
from Soap4r:

Unknown attr {http://schemas.xmlsoap.org/wsdl/}arrayType.
Unknown attr {http://schemas.xmlsoap.org/wsdl/}arrayType.
/usr/local/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:396:in 
`decode_tag_by_wsdl': undefined method `namespace' for nil:NilClass 
(NoMethodError)
	from /usr/local/lib/ruby/1.8/soap/encodingstyle/soapHandler.rb:179:in 
`decode_tag'
	from /usr/local/lib/ruby/1.8/soap/parser.rb:184:in `decode_tag'
	from /usr/local/lib/ruby/1.8/soap/parser.rb:132:in `start_element'
	from /usr/local/lib/ruby/1.8/xsd/xmlparser/parser.rb:78:in 
`start_element'
	from /usr/local/lib/ruby/1.8/xsd/xmlparser/rexmlparser.rb:45:in 
`tag_start'
	from /usr/local/lib/ruby/1.8/rexml/parsers/streamparser.rb:17:in 
`parse'
	from /usr/local/lib/ruby/1.8/rexml/document.rb:166:in `parse_stream'
	from /usr/local/lib/ruby/1.8/xsd/xmlparser/rexmlparser.rb:38:in 
`do_parse'
	from /usr/local/lib/ruby/1.8/soap/parser.rb:100:in `parse'
	from /usr/local/lib/ruby/1.8/soap/processor.rb:47:in `unmarshal'
	from /usr/local/lib/ruby/1.8/soap/wsdlDriver.rb:366:in `invoke'
	from /usr/local/lib/ruby/1.8/soap/wsdlDriver.rb:301:in `rpc_send'
	from (eval):2:in `doGoogleSearch'
	from trial.rb:19

Those "Unknown attr" messages come from .../lib/ruby/wsdl/parser.rb in
decode_tag. A few puts's make me think that this part of the WSDL
provokes them:

       <xsd:complexType name="ResultElementArray">
         <xsd:complexContent>
           <xsd:restriction base="soapenc:Array">
              <xsd:attribute ref="soapenc:arrayType" 
wsdl:arrayType="typens:ResultElement[]"/>
           </xsd:restriction>
         </xsd:complexContent>
       </xsd:complexType>

       <xsd:complexType name="DirectoryCategoryArray">
         <xsd:complexContent>
           <xsd:restriction base="soapenc:Array">
              <xsd:attribute ref="soapenc:arrayType" 
wsdl:arrayType="typens:DirectoryCategory[]"/>
           </xsd:restriction>
         </xsd:complexContent>
       </xsd:complexType>

(I deduced this by printing out the name and attrs in
start_element. One element that seems to cause the error prints as:
   xsd:attribute
   wsdl:arrayTypetypens:DirectoryCategory[]refsoapenc:arrayType

Plus, the above two elements are the only ones that contain
"arrayType".)

Unfortunately, I am scandalously ignorant when it comes to SOAP and
WSDL and all that, so I'm not sure where to take this next. Can
someone offer a clue?

-----
Brian Marick
Consulting, training, contracting, and research
Focused on the intersection of testing, programming, and design
marick@testing.com, marick@visibleworkings.com
www.testing.com, www.visibleworkings.com