We have a .NET 1.1 web service which we're trying to use from Java using
stubs generated by Axis 1.2 RC2 (with the WSDL2Java tool).
We are calling a method ('QueryExecute') on the web service which takes
three parameters, one of which is used to return a value ('pRecordSet'). If
an error occurs when executing the method, it returns a QueryExecuteResult;
if the method worked as expected, a QueryExecuteResult will not be returned
in the response.
Here is the WSDL for the method and the response:
<s:element name="QueryExecute">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="SessionID"
type="s:string" />
<s:element minOccurs="0" maxOccurs="1" name="Query"
type="tns:csDtoQueryItem" />
<s:element minOccurs="0" maxOccurs="1" name="pRecordSet"
type="tns:csDtoRecordSet" />
</s:sequence>
</s:complexType>
</s:element>
<s:element name="QueryExecuteResponse">
<s:complexType>
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="QueryExecuteResult"
type="tns:csDtoQueryFeedBackList" />
<s:element minOccurs="0" maxOccurs="1" name="pRecordSet"
type="tns:csDtoRecordSet" />
</s:sequence>
</s:complexType>
</s:element>
When we call this method, we get the following error:
Didn't find specified return QName
{http://localhost/AgoraWS/Serducts}QueryExecuteResult!
This is thrown from the following piece of code at line 2513 in Call:
// If we were looking for a particular QName for the return and
// still didn't find it, throw an exception
if (findReturnParam) {
String returnParamName = returnParamQName.toString();
throw new AxisFault(Messages.getMessage("noReturnParam",
returnParamName));
}
We have debugged Axis and what seems to be happening is that the
OperationDesc object representing the method which is used in the Call has a
ParameterDesc for the return which contains QueryExecuteResult; this causes
a problem as when the Call searches for the return parameters, it cannot
find QueryExecuteResult in the return parameters in the response - the
pRecordSet return parameter is the only return parameter present.
We can execute this method using a .NET-generated client and it works as
expected, with no errors.
Unfortunately, we don't have control over the web service, so have to work
with what we're given!
Does anyone have a clue why this doesn't work using the Axis stubs, or how
to resolve it? It seems that Axis isn't taking into account the
'minOccurs="0"' for the QueryExecuteResult; is that the root of the problem?
Many thanks for any insight!
Alistair
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