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https://issues.apache.org/jira/browse/CXF-6937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15974542#comment-15974542
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fred assi commented on CXF-6937:
--------------------------------
I will be investigating this issue
> Dealing with empty soap:body together with MIME-Attachment in wsdl
> ------------------------------------------------------------------
>
> Key: CXF-6937
> URL: https://issues.apache.org/jira/browse/CXF-6937
> Project: CXF
> Issue Type: Bug
> Components: Soap Binding
> Affects Versions: 3.1.6
> Environment: Windows 7, Java 1.8_74
> Reporter: Stefan Laube
> Priority: Minor
>
> There are problems validating a wsdl and generating java-stubs from wsdl when
> the wsdl-file contains an empty soap:body-definition while data is put to
> MIME-Attachment.
> In a wsdl-file, i need to specify an empty soap:body, while the
> <message>-specific data needs to go to header and/ or attachment.
> As far as i know, an empty soap:body is defined with:
> {{<soap:body parts=""/>}}
> This construct is used in two cases in the following showcase in line 61 and
> line 71.
> {code:title=showcase.wsdl|borderStyle=solid}
> <?xml version="1.0"?>
> <definitions name="Showcase"
> targetNamespace="http://showcase.de/v1";
> xmlns:tns="http://showcase.de/v1";
> xmlns:xs="http://www.w3.org/2001/XMLSchema";
> xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/";
> xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/";
> xmlns="http://schemas.xmlsoap.org/wsdl/";>
> <documentation>
> Showcase
> demonstrate handling for empty soap:body together with attachments
> </documentation>
> <types>
> <schema targetNamespace="http://showcase.de/v1";
> xmlns="http://www.w3.org/2001/XMLSchema";
> elementFormDefault="qualified">
> <element name="DataTypeIn">
> <complexType>
> <sequence>
> <any processContents="skip" />
> </sequence>
> </complexType>
> </element>
> <element name="DataTypeOut">
> <complexType>
> <sequence>
> <any processContents="skip" />
> </sequence>
> </complexType>
> </element>
> </schema>
> </types>
> <message name="MyFuncReq">
> <part name="Version" type="xs:string" />
> <part name="DataReq" element="tns:DataTypeIn" />
> </message>
> <message name="MyFuncRsp">
> <part name="DataRsp" element="tns:DataTypeOut" />
> </message>
> <portType name="MyPort">
> <operation name="MyFunc">
> <input message="tns:MyFuncReq" />
> <output message="tns:MyFuncRsp" />
> </operation>
> </portType>
> <binding name="MySoapBinding" type="tns:MyPort">
> <soap:binding transport="http://schemas.xmlsoap.org/soap/http"; />
> <operation name="MyFunc">
> <soap:operation soapAction="MyFunc" />
> <input>
> <mime:multipartRelated>
> <mime:part>
> <soap:header message="tns:MyFuncReq" part="Version"
> use="literal" />
> <soap:body parts=""/>
> </mime:part>
> <mime:part>
> <mime:content part="DataReq" type="text/xml" />
> </mime:part>
> </mime:multipartRelated>
> </input>
> <output>
> <mime:multipartRelated>
> <mime:part>
> <soap:body parts=""/>
> </mime:part>
> <mime:part>
> <mime:content part="DataRsp" type="text/xml" />
> </mime:part>
> </mime:multipartRelated>
> </output>
> </operation>
> </binding>
> <service name="MyService">
> <port name="MyHttpSoapPort" binding="tns:MySoapBinding">
> <soap:address location="http://host:port/services/func_1/"; />
> </port>
> </service>
> </definitions>
> {code}
> In the wsdl:input-definition (line 57ff.), the message-part "Version" is put
> into soap:header, as mentioned no part shall be put into soap:body and the
> "DataReq"-part is put into attachment.
> In the wsdl:output-definition (line 68ff.), again, nothing shall be put into
> soap:body while the "DataRsp"-part is put into attachment.
> Now, when i validate this wsdl-file using the command line:
> {{apache-cxf-3.1.6\bin\wsdlvalidator.bat showcase.wsdl}}
> i get multiple error messages, basically saying:
> {{cvc-minLength-valid: Value '' with length = '0' is not facet-valid with
> respect to minLength '1' for type 'NMTOKENS'.}}
> {{cvc-attribute.3: The value '' of attribute 'parts' on element 'soap:body'
> is not valid with respect to its type, 'NMTOKENS'}}
> As far as i understand these output, it is not allowed to define an empty
> "parts"-element, thus no empty soap:body.
> *But why?*
> Now when i generate java-stubs from this wsdl-file, using the command line:
> {{apache-cxf-3.1.6\bin\wsdl2java.bat" -verbose -d java_out showcase.wsdl}}
> the resulting files seem to be ok (generated interfaces and classes can be
> implemented/ extended) but during stub-generation i get the message:
> {{INFORMATION: Operation \{http://showcase.de/v1}MyFunc cannot be unwrapped,
> input and output messages (if present) must contain only a single part}}
> which i don't know how to interpret. For me, it seems to be connected to the
> error-messages during validation.
> *Can this be ignored?* *Is anything left out in the generated stubs?*
> Interestingly i get no such messages when generating the java-stubs using the
> ant-task "com.sun.tools.ws.ant.WsImport" (having verbose=true).
> Any clarification is appreciated.
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