java.lang.Exception: No such operation: login j - soap

Question

I'm trying to invoke sfdc login webservice from mule. I generated classes using apache cxxf wsdl2java on partner wsdl. I tried all possible ways of sending the input,but still continue to get the "java.lang.Exception: No such operation: login" error
Following is my flow:
<mule....>
<cxf:configuration name="CXF_Configuration" enableMuleSoapHeaders="true" initializeStaticBusInstance="true" doc:name="CXF Configuration"/>
<flow name="mainFlow1" doc:name="mainFlow1">
<http:inbound-endpoint exchange-pattern="request-response" path="sfdclogin" host="localhost" port="8081" doc:name="HTTP"/>
<scripting:component doc:name="Groovy">
<scripting:script engine="Groovy"><![CDATA[import com.sforce.soap.partner.*;
ObjectFactory of= new ObjectFactory();
com.sforce.soap.partner.Login loginReq=new com.sforce.soap.partner.Login();
loginReq.setUsername("username");
loginReq.setPassword("password");
return loginReq;]]></scripting:script>
</scripting:component>
<cxf:jaxws-client operation="login" serviceClass="com.sforce.soap.partner.SforceService" doc:name="SOAP"/>
<https:outbound-endpoint address="https://test.salesforce.com/services/Soap/u/30.0" exchange-pattern="request-response" method="POST" doc:name="HTTPS"/>
</flow>
</mule>
Exception stack trace. As can be seen below, correct object of Login type is being passed to SOAP component.
Object after transform: com.sforce.soap.partner.Login#5d9683ed
The transformed object is of expected type. Type is: Login
********************************************************************************
Message : No such operation: login. Failed to route event via endpoint: org.mule.module.cxf.CxfOutboundMessageProcessor. Message payload is of type: Login
Type : org.mule.api.transport.DispatchException
Code : MULE_ERROR--2
Payload : com.sforce.soap.partner.Login#5d9683ed
JavaDoc : http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transport/DispatchException.html
********************************************************************************
Exception stack is:
1. No such operation: login (java.lang.Exception)
org.mule.module.cxf.CxfOutboundMessageProcessor:282 (null)
2. No such operation: login. Failed to route event via endpoint: org.mule.module.cxf.CxfOutboundMessageProcessor. Message payload is of type: Login (org.mule.api.transport.DispatchException)
org.mule.module.cxf.CxfOutboundMessageProcessor:150 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transport/DispatchException.html)
********************************************************************************
Root Exception stack trace:
java.lang.Exception: No such operation: login
at org.mule.module.cxf.CxfOutboundMessageProcessor.getOperation(CxfOutboundMessageProcessor.java:282)
at org.mule.module.cxf.CxfOutboundMessageProcessor.getOperation(CxfOutboundMessageProcessor.java:363)
WSDL:
<!-- Login Message Types -->
<element name="login">
<complexType>
<sequence>
<element name="username" type="xsd:string"/>
<element name="password" type="xsd:string"/>
</sequence>
</complexType>
</element>
<message name="loginRequest">
<part element="tns:login" name="parameters"/>
</message>
<!-- Soap PortType -->
<portType name="Soap">
<operation name="login">
<documentation>Login to the Salesforce.com SOAP Api</documentation>
<input message="tns:loginRequest"/>
<output message="tns:loginResponse"/>
<fault message="tns:LoginFault" name="LoginFault"/>
<fault message="tns:UnexpectedErrorFault" name="UnexpectedErrorFault"/>
<fault message="tns:InvalidIdFault" name="InvalidIdFault"/>
</operation>
</portType>
<!-- Soap Binding -->
<binding name="SoapBinding" type="tns:Soap">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="login">
<soap:operation soapAction=""/>
<input>
<soap:header use="literal" message="tns:Header" part="LoginScopeHeader"/>
<soap:header use="literal" message="tns:Header" part="CallOptions"/>
<soap:body parts="parameters" use="literal"/>
</input>
<output>
<soap:body use="literal"/>
</output>
<fault name="LoginFault">
<soap:fault name="LoginFault" use="literal"/>
</fault>
<fault name="UnexpectedErrorFault">
<soap:fault name="UnexpectedErrorFault" use="literal"/>
</fault>
<fault name="InvalidIdFault">
<soap:fault name="InvalidIdFault" use="literal"/>
</fault>
</operation>
</binding>
<!-- Soap Service Endpoint -->
<service name="SforceService">
<documentation>Sforce SOAP API</documentation>
<port binding="tns:SoapBinding" name="Soap">
<soap:address location="https://test.salesforce.com/services/Soap/u/30.0"/>
</port>
</service>