Schema validation in JAX WW web service - web-services

Question

I am developing web services using jax-ws and apache cxf with code first approach . I want to enable schema validation in my service . For this I have configured the cxf configuration file as follows
<jaxws:endpoint id="testService"
implementorClass="com.test.impl.TestServiceImpl"
implementor="#testServiceImpl"
address="/testService">
<jaxws:serviceFactory>
<ref bean="jaxws-and-aegis-service-factory"/>
</jaxws:serviceFactory>
<jaxws:properties>
<entry key="schema-validation-enabled" value="true"/>
</jaxws:properties>
</jaxws:endpoint>
Service,
#WebService
#SOAPBinding(style=SOAPBinding.Style.DOCUMENT,use=SOAPBinding.Use.LITERAL)
public interface TestService {
#WebMethod
String test(MyVo myVo) ;
}
MyVo,
#XmlAccessorType(XmlAccessType.FIELD)
#XmlType(name = "MyVo")
public class MyVo {
#XmlElement(name = "name", required = true)
private String name;
............. // getter and setter
}
.
But after deploying the service wsdl looks like
<xsd:complexType name="MyVo">
<xsd:sequence>
<xsd:element minOccurs="0" name="name" nillable="true" type="xsd:string" />
</xsd:sequence>
</xsd:complexType>
As per documentation minOccurs should be 1 (because of required=true ) .
Also I am able to call service without setting name attribute in MyVo object . No error is coming from server.
I have created a endorsed directory in my jre\lib folder and jdk\lib folder and put jaxb-api-2.2.jar and jaxws-api-2.2.1.jar there . Still facing same problem . I am using jdk1.6.0_11.
Thanks
Please advice .