Hi,
I have an interesting case binding/marshalling complex types using the 2.1
snapshot. A NullPointer is thrown [in NamespaceHelper.getPrefix() ] when I
used AegisDataBinding but it works perfectly fine when I use JAXB (see the
"comment me to use JAXB" line in the server & client).
Question: Do I absolutely have to have a prefix for my namespace? How come
it works fine with primitives? [actually I was trying to get the service
working with some interfaces & abstract classes & was running into "no write
method for property xxx" so when I took them out & dealt with POJOs, I ran
into this NPE.]
About the environment: Eclipse Europa, Win XP, Java 1.6
I have 2 beans, the interface and the implementation, the server & the
client (all in the same package).
First, here is the stacktrace:
Apr 6, 2008 2:06:05 AM
org.apache.cxf.service.factory.ReflectionServiceFactoryBean
buildServiceFromClass
INFO: Creating Service {http://education.toorosystems.com/}University from
class com.toorosystems.education.University
Exception in thread "main" java.lang.NullPointerException
at
org.apache.cxf.aegis.util.NamespaceHelper.getPrefix(NamespaceHelper.java:71)
at
org.apache.cxf.aegis.util.NamespaceHelper.getUniquePrefix(NamespaceHelper.java:57)
at
org.apache.cxf.aegis.type.basic.BeanType.getNameWithPrefix(BeanType.java:533)
at
org.apache.cxf.aegis.type.basic.BeanType.writeSchema(BeanType.java:483)
at
org.apache.cxf.aegis.databinding.AegisDatabinding.createSchemas(AegisDatabinding.java:477)
at
org.apache.cxf.aegis.databinding.AegisDatabinding.initialize(AegisDatabinding.java:322)
at
org.apache.cxf.service.factory.ReflectionServiceFactoryBean.buildServiceFromClass(ReflectionServiceFactoryBean.java:343)
at
org.apache.cxf.service.factory.ReflectionServiceFactoryBean.initializeServiceModel(ReflectionServiceFactoryBean.java:392)
at
org.apache.cxf.service.factory.ReflectionServiceFactoryBean.create(ReflectionServiceFactoryBean.java:180)
at
org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createEndpoint(AbstractWSDLBasedEndpointFactory.java:79)
at
org.apache.cxf.frontend.ServerFactoryBean.create(ServerFactoryBean.java:113)
at com.toorosystems.education.Server.main(Server.java:19)
The model:
*a)* The beans:
1. Course [id (long), name & description; their getters and setters, + 2
constructors: (no-arg & all-arg)]
2. Teacher [age (int), name, department; their getters/setters, + 2
constructors (no-arg & all-arg i.e. Course(int age, String name, String
dept)]
*b)* The interface:
package com.toorosystems.education;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.jws.WebMethod;
import javax.jws.WebResult;
import javax.jws.WebParam;
@WebService(name="University", targetNamespace="
http://education.toorosystems.com/";)
@SOAPBinding(use=SOAPBinding.Use.LITERAL, style=SOAPBinding.Style.DOCUMENT,
parameterStyle=SOAPBinding.ParameterStyle.BARE)
public interface University {
@WebResult(targetNamespace="http://education.toorosystems.com/";,
name="return", partName="return")
@WebMethod(operationName="getTeacher", exclude=false)
public Teacher getTeacher(@WebParam(targetNamespace="
http://education.toorosystems.com/";, name="course", mode=WebParam.Mode.IN)
Course course);
}
*c)* The implementation
package com.toorosystems.education;
import javax.xml.ws.WebServiceClient;
//@WebServiceClient(name="com.toorosystems.education.UniversityImpl",
targetNamespace="http://education.toorosystems.com/";)
public class UniversityImpl implements University {
public UniversityImpl() {}
public Teacher getTeacher(Course course) {
System.out.println("getTeacher called...");
return new Teacher("Mr. Tom", 52, "Computer Science" +
course.getName());
}
}
*d)* The Server
package com.toorosystems.education;
import org.apache.cxf.aegis.databinding.AegisDatabinding;
import org.apache.cxf.frontend.ServerFactoryBean;
public class Server {
public static void main(String[] args) {
// Create our service implementation
System.out.println("Starting server ...");
ServerFactoryBean svrFactory = new ServerFactoryBean();
svrFactory.setServiceClass(University.class);
svrFactory.setAddress("http://localhost:9090/TV";);
svrFactory.setServiceBean(new UniversityImpl());
// comment me to use JAXB
svrFactory.getServiceFactory().setDataBinding(new
AegisDatabinding());
svrFactory.create();
System.out.println("Server started!");
}
}
*e)* The client
package com.toorosystems.education;
import org.apache.cxf.aegis.databinding.AegisDatabinding;
import org.apache.cxf.frontend.ClientProxyFactoryBean;
public class Client {
public static void main(String[] args) {
// see
http://cwiki.apache.org/CXF20DOC/introduction-to-aegis-21.html
ClientProxyFactoryBean factory = new ClientProxyFactoryBean();
// comment me to use JAXB
factory.getServiceFactory().setDataBinding(new AegisDatabinding());
factory.setServiceClass(University.class);
factory.setAddress("http://localhost:9090/TV";);
University client = (University) factory.create();
Teacher tr = client.getTeacher(new Course(40, "Intro to CS",
"Introductory Comp Sci"));
System.out.println("Response is: " + tr.getName() + ", " +
tr.getAge() + ", " + tr.getDepartment());
}
}
Any pointers will be appreciated,
Judes T
