Trying to understand a WS-I validation failure

Question

I'm trying to understand the following WS-I validation failure message. I'm sure I'm making a basic mistake but I can't find an example of the use case where an xsd is imported. Can someone point out my error?
Thanks,
Bret
Validation failure:
Result failed:
Failure Message: A QName reference that is referring to a schema component, uses a namespace not defined in the targetNamespace attribute on the xs:schema element, or in the namespace attribute on an xs:import element within the xs:schema element.Failure Detail Message:
{http://Messages.xsd}SigReplyMessage,
{http://schemas.xmlsoap.org/wsdl/}string,
{http://Messages.xsd}SigRequestMessage
Element Location: lineNumber=8
My wsdl looks like this:
<definitions targetNamespace="urn:S3SignatureGenerator"
xmlns="http://schemas.xmlsoap.org/wsdl/"
xmlns:tns="urn:S3SignatureGenerator"
xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:messages="http://Messages.xsd">
<types>
<xsd:schema>
<xsd:import id="Messages.xsd"
schemaLocation="../../XSDDocument/Messages.xsd"
namespace="http://Messages.xsd"/>
</xsd:schema>
</types>
<message name="ReturnSignature">
<part name="SigAndExp" type="messages:SigReplyMessage"/>
</message>
<message name="RequestSignature">
<part name="Keys" type="messages:SigRequestMessage"/>
</message>
<portType name="SigGenerator">
<operation name="GetSignature">
<input message="tns:RequestSignature"/>
<output message="tns:ReturnSignature"/>
<fault name="sigFault" message="tns:SigFault"/>
</operation>
</portType>
<message name="SigFault">
<part name="faultMessage" element="string"/>
</message>
<binding name="SigGenSoapHttp" type="tns:SigGenerator">
<soap:binding style="document"
transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="GetSignature">
<soap:operation soapAction="urn:S3SignatureGenerator/GetSignature"/>
<input>
<soap:body use="literal" parts="SecretKey PublicKey"/>
</input>
<output>
<soap:body use="literal" parts="Signature"/>
</output>
<fault name="sigFault">
<soap:body use="literal" parts="SecretKey PublicKey"/>
</fault>
</operation>
</binding>
<service name="SignatureGenerationService">
<port name="SigGenSoapHttpPort" binding="tns:SigGenSoapHttp">
<soap:address location="tbd"/>
</port>
</service>
</definitions>
Messages.xsd looks like this:
<?xml version="1.0" encoding="windows-1252" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns="http://www.bret.org/S3test/Messages"
targetNamespace="http://www.bret.org/S3test/Messages"
elementFormDefault="qualified">
<xsd:complexType name="sigRequestMessage">
<xsd:sequence>
<xsd:element name="publicKey" type="xsd:string"/>
<xsd:element name="privateKey" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="sigReplyMessage">
<xsd:sequence>
<xsd:element name="Signature" type="xsd:string"/>
<xsd:element name="expiration" type="xsd:dateTime"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>

Answer 1

Hi Bret,
Sorry it's taken me a bit of time to respond, but please find below a run-down of the WS-I related problems I spotted in your WSDL document. The first few are related to the import error you saw, and there's a few others that I'll also discuss. Apologies in advance if you've already spotted and corrected those.
I'll use line numbering based on the formatting of the WSDL and XSD that you supplied.
BP2417 (the one you asked about)
The line number in the error is a red herring. There are two problems here:
- WSDL document, line 29: You're using the XSD type string unqualified - it should be xsd:string.
- WSDL document, lines 8 and 13; schema, lines 3 and 4: The namespaces you're using don't match. Either change the namespaces in the schema to be http://Messages.xsd, or change the namespaces in the WSDL to http://www.bret.org/S3test/Messages.
BP2202
You should declare UTF-8 or UTF-16 encoding when creating WSDL or schema documents. The easiest way to do this is to go to Tools|Preferences, and set JDeveloper's default encoding to either UTF-8 or UTF-16.
BP2032
WSDL document, line 26 and 43: The name attribute of the fault should read SigFault, not sigFault, as WSDL is case-sensitive.
WSDL document, line 44: You should use a soap:fault element, not a soap:body element, to bind a fault, thus:
<soap:fault name="SigFault" use="literal"/>
BP2012
WSDL document, lines 17 and 20: Message parts in a document-bound service like this one should reference XSD elements and not complexTypes. What you need to do is define two elements in your messages schema whose types are SigReplyMessage and SigRequestMessage respectively, and then reference those elements from the WSDL.
WSDL document, line 38: The value of the parts attribute should be Keys to match the name of the part child of the RequestSignature.
WSDL document, line 41: The value of the parts attribute should be SigAndExp to match the name of the part child of the ReturnSignature.
WSDL document, line 44: The value of the parts attribute should be faultMessage to match the name of the part child of the SigFault.
BP2115
WSDL document, lines 17 and 20: The names of the elements should be sigReplyMessage and sigRequestMessage and not SigReplyMessage and SigRequestMessage, again because WSDL is case-sensitive.
WSDL document, line 30: The element attribute of the part references xsd:string, which is not an element but a complexType. You'll need to add an element declaration to your schema, which is of type xsd:string.
I've included corrected versions of your WSDL and schema below, I hope this helps. I also note you've posted a few other messages related to WS-I and WSDL, I hope I've managed to cover those in this message too.
Regards,
Alan.
WSDL:
<?xml version="1.0" encoding="UTF-8" ?>
<definitions targetNamespace="urn:S3SignatureGenerator"
xmlns="http://schemas.xmlsoap.org/wsdl/"
xmlns:tns="urn:S3SignatureGenerator"
xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:messages="http://Messages.xsd">
<types>
<xsd:schema>
<xsd:import id="Messages.xsd"
schemaLocation="Messages.xsd"
namespace="http://Messages.xsd"/>
</xsd:schema>
</types>
<message name="ReturnSignature">
<part name="SigAndExp" element="messages:sigReplyMessage"/>
</message>
<message name="RequestSignature">
<part name="Keys" element="messages:sigRequestMessage"/>
</message>
<message name="SigFault">
<part name="faultMessage" element="messages:faultMessage"/>
</message>
<portType name="SigGenerator">
<operation name="GetSignature">
<input message="tns:RequestSignature"/>
<output message="tns:ReturnSignature"/>
<fault name="SigFault" message="tns:SigFault"/>
</operation>
</portType>
<binding name="SigGenSoapHttp" type="tns:SigGenerator">
<soap:binding style="document"
transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="GetSignature">
<soap:operation soapAction="urn:S3SignatureGenerator/GetSignature"/>
<input>
<soap:body use="literal" parts="Keys"/>
</input>
<output>
<soap:body use="literal" parts="SigAndExp"/>
</output>
<fault name="SigFault">
<soap:fault name="SigFault" use="literal"/>
</fault>
</operation>
</binding>
<service name="SignatureGenerationService">
<port name="SigGenSoapHttpPort" binding="tns:SigGenSoapHttp">
<soap:address location="tbd"/>
</port>
</service>
</definitions>
Schema:
<?xml version="1.0" encoding="UTF-8" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns="http://Messages.xsd"
targetNamespace="http://Messages.xsd"
elementFormDefault="qualified">
<xsd:element name="sigRequestMessage">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="publicKey" type="xsd:string"/>
<xsd:element name="privateKey" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="sigReplyMessage">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="Signature" type="xsd:string"/>
<xsd:element name="expiration" type="xsd:dateTime"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="faultMessage" type="xsd:string"/>
</xsd:schema>