Hello, I would like just to add more information about the utility of using interfaces in cxf without implementation classes. For my previous example about Resource, ResourceImpl1 and ResourceImpl2, my proposed solution by using an adapter of Resource class in order to allow JAXB to use interfaces is not a very nice solution. It will be nice if for example I define three interfaces, Resource, Resource1 and Resource2, while Resource1 and Resource2 extends Resource. That way, by using MOXY, I can avoid the use of adapters and I can distinguish the treatment of messages at reception according to Resource1 or Resource2 types. This approach is very similar to what is actually possible in cxf when for example a subclass instance is sent to a service waiting a superclass of it.
Can somebody help me to find the way to do it in cxf please? Regards, Diana On Wed, Feb 20, 2013 at 6:22 PM, diana allam <[email protected]> wrote: > thanks for your fast reply. > I tested it because actually I am interested in deploying services with an > interface type as input or output. > I already tested on cxf how to do it by using implementation classes, for > example, I defined a Resource interface and two implementations > ResourceImpl1 and ResourceImpl2 such that all my REST methods are declared > with a Resource type and I consider to differentiate the treatment at a > reception of a ResourceImpl1 or ResourceImpl2. In order to do that I added > the following two annotations to my Resource interface, and my > AdaptedResource class (which is the adapted java instance for serialization > and deserialization) contains an attribute which refers to the > corresponding implementation (ResourceImpl1 or ResourceImpl2). > > ------------------------------------------------------------------------------------ > @XmlSeeAlso({ResourceImpl1.class, ResourceImpl2.class}) > @XmlJavaTypeAdapter(MyResourceAdapter.class) > public interface Resource {...} > > ------------------------------------------------------------------------------------ > > > By curiosity, I tested MOXY without implementation classes and it works, > but not for cxf, I didn't understand the problem > > > On Wed, Feb 20, 2013 at 5:59 PM, Sergey Beryozkin <[email protected]>wrote: > >> Hi >> >> The appears to be some issue with your invocation handler, why do you >> need it all ? If users had to write InvocationHandlers in order to be able >> to work with CXF RS client runtime then it would not be ideal at all :-) >> >> Thanks, Sergey >> >> >> On 20/02/13 16:49, allam-di wrote: >> >>> Hello all, >>> >>> I would like to use MOXY in order to handle interfaces as input >>> arguments on >>> my service methods. >>> First, I tested MOXY data binding with interfaces as it is given in the >>> following blog: >>> http://blog.bdoughan.com/2010/**07/moxy-jaxb-map-interfaces-** >>> to-xml.html<http://blog.bdoughan.com/2010/07/moxy-jaxb-map-interfaces-to-xml.html> >>> >>> It works oK for me, thus I can serialize and deserialize messages by >>> declaring a service method with an interface argument, without defining >>> any >>> implementation classes of this interface. >>> In order to do a similar think integrated to cxf, I followed the >>> discussion >>> at this link: >>> http://cxf.547215.n5.nabble.**com/How-to-configure-CXF-to-** >>> use-different-**JAXBContextFactory-td5281773.**html<http://cxf.547215.n5.nabble.com/How-to-configure-CXF-to-use-different-JAXBContextFactory-td5281773.html> >>> >>> Here is my ContextResolver Class: >>> ------------------------------**----------- >>> >>> package project; >>> >>> @Provider >>> public class MyContextResolver implements ContextResolver<JAXBContext> { >>> private JAXBContext jc; >>> >>> public MyContextResolver() { >>> try { >>> >>> jc = JAXBContext.newInstance(**MyObjectFactory.class); >>> } catch(JAXBException e) { >>> throw new RuntimeException(e); >>> } >>> } >>> >>> public JAXBContext getContext(Class<?> type) { >>> try { >>> jc = JAXBContextFactory.**createContext(new >>> Class[] >>> {MyObjectFactory.class}, null); >>> >>> return jc; >>> } catch (JAXBException e) { >>> e.printStackTrace(); >>> } >>> return null; >>> } >>> >>> } >>> >>> Here is my ObjectFactory class: >>> ------------------------------**----------- >>> @XmlRegistry >>> public class MyObjectFactory { >>> >>> >>> public Customer createCustomer() { >>> return createInstance(Customer.class)**; >>> >>> } >>> ... >>> >>> >>> private<T> T createInstance(Class<T> anInterface) { >>> return (T) Proxy.newProxyInstance(**anInterface.getClassLoader(), >>> new >>> Class[] {anInterface}, new InterfaceInvocationHandler()); >>> } >>> >>> private static class InterfaceInvocationHandler implements >>> InvocationHandler { >>> >>> private Map<String, Object> values = new HashMap<String, >>> Object>(); >>> >>> public Object invoke(Object proxy, Method method, Object[] args) >>> throws Throwable { >>> String methodName = method.getName(); >>> if(methodName.startsWith("get"**)) { >>> return values.get(methodName.**substring(3)); >>> >>> } >>> else { >>> values.put(methodName.**substring(3), args[0]); >>> return null; >>> } >>> } >>> >>> } >>> } >>> >>> Here is my bean.xml file: >>> ------------------------------**----- >>> <?xml version="1.0" encoding="UTF-8"?> >>> <beans >>> xmlns="http://www.**springframework.org/schema/**beans<http://www.springframework.org/schema/beans> >>> " >>> >>> xmlns:xsi="http://www.w3.org/**2001/XMLSchema-instance<http://www.w3.org/2001/XMLSchema-instance> >>> " >>> xmlns:jaxrs="http://cxf.**apache.org/jaxrs <http://cxf.apache.org/jaxrs> >>> " >>> xsi:schemaLocation=" >>> http://www.springframework.**org/schema/beans<http://www.springframework.org/schema/beans> >>> http://www.springframework.**org/schema/beans/spring-beans.**xsd<http://www.springframework.org/schema/beans/spring-beans.xsd> >>> http://cxf.apache.org/jaxrs >>> http://cxf.apache.org/schemas/**jaxrs.xsd<http://cxf.apache.org/schemas/jaxrs.xsd> >>> "> >>> <import resource="classpath:META-INF/**cxf/cxf.xml" /> >>> <import resource="classpath:META-INF/**cxf/cxf-servlet.xml" /> >>> <jaxrs:server id="test" address="/"> >>> <jaxrs:serviceBeans> >>> <ref bean="myWebService" /> >>> </jaxrs:serviceBeans> >>> <jaxrs:providers> >>> <ref bean="MOXYProvider" /> >>> </jaxrs:providers> >>> </jaxrs:server> >>> >>> <bean id="MOXYProvider" class="project.**MyContextResolver" /> >>> <bean id="myWebService" class="project.Service" /> >>> </beans> >>> >>> Here is a the constructor of my service class: >>> ------------------------------**---------------------- >>> public Service(){ >>> >>> ObjectFactory objectFactory = new ObjectFactory(); >>> Customer c = objectFactory.createCustomer()**; >>> c.setName("defaultName"); >>> Address address = objectFactory.createAddress(); >>> address.setCity("**defaultAddress"); >>> address.setStreet("**defaultStreet"); >>> c.setAddress(address); >>> >>> this.resources.put(c.getName()**, s); >>> >>> } >>> >>> and here is my GET method: >>> >>> @GET >>> @Path("/resources/{name}/") >>> public Customer getCustomer(@PathParam("name") String name) { >>> return this.resources.get(name); >>> } >>> >>> When I call my service, I get the following error: >>> >>> Exception in thread "main" Status : 500 >>> Headers : >>> Date : Wed, 20 Feb 2013 16:02:30 GMT >>> Content-Length : 65 >>> Content-Type : text/plain >>> Connection : close >>> Server : Apache-Coyote/1.1 >>> Error message : >>> No message body writer has been found for response class $Proxy5. >>> >>> at >>> org.apache.cxf.jaxrs.client.**ClientProxyImpl.checkResponse(** >>> ClientProxyImpl.java:250) >>> at >>> org.apache.cxf.jaxrs.client.**ClientProxyImpl.**handleResponse(** >>> ClientProxyImpl.java:517) >>> at >>> org.apache.cxf.jaxrs.client.**ClientProxyImpl.**doChainedInvocation(** >>> ClientProxyImpl.java:487) >>> at >>> org.apache.cxf.jaxrs.client.**ClientProxyImpl.invoke(** >>> ClientProxyImpl.java:188) >>> at $Proxy18.getResource(Unknown Source) >>> at project.Client.main(Client.**java:35) >>> >>> >>> >>> Any idea about this error please? >>> >>> Regards, >>> >>> Diana >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> -- >>> View this message in context: http://cxf.547215.n5.nabble.** >>> com/How-to-configure-cxf-to-**use-MOXY-Jaxb-for-RESTful-**tp5723506.html<http://cxf.547215.n5.nabble.com/How-to-configure-cxf-to-use-MOXY-Jaxb-for-RESTful-tp5723506.html> >>> Sent from the cxf-user mailing list archive at Nabble.com. >>> >> >> >> -- >> Sergey Beryozkin >> >> Talend Community Coders >> http://coders.talend.com/ >> >> Blog: http://sberyozkin.blogspot.com >> > >
