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From "Sambit Dikshit (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CXF-4799) Parameterized Classes should be automatically added to JAXBContext
Date Fri, 08 Feb 2013 13:31:13 GMT

    [ https://issues.apache.org/jira/browse/CXF-4799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13574475#comment-13574475
] 

Sambit Dikshit commented on CXF-4799:
-------------------------------------

Hi Sergey, The custom jaxb provider extends JAXBElementProvider and its set in server side
bean as well as WebClient.  

The problem is on the readFrom method where it can not resolve the parameter type when trying
to deserialize the binary stream to a object at client side. You can try out same test case
but in a server and client fashion.
                
> Parameterized Classes should be automatically added to JAXBContext
> ------------------------------------------------------------------
>
>                 Key: CXF-4799
>                 URL: https://issues.apache.org/jira/browse/CXF-4799
>             Project: CXF
>          Issue Type: Improvement
>          Components: JAXB Databinding
>    Affects Versions: 2.7.2
>            Reporter: Sambit Dikshit
>
> We are using a payload type which is a parameterized generic. For example, ServiceResponse<T>
 { 
> T payload;
> public T getPayload() { 
> return T
> }
> public void setPayload(T t){
> this.payload = t;
> }
> We are using this as a payload wrapper for JAXRS services.  The payload can be any type
at runtime. Unless we set the extraClass, the JAXBContext created in AbstractJAXBProvider
is not picking up the actual parameter types. I was thinking of extending to add to existing
jaxb context map, i could not since its a private scoped hashmap. This should be automatically
handled in AbstractJAXBProvider class.  Following check can be made and added for actual type.

> ParameterizedType paramType = (genericType instanceof ParameterizedType) ? (ParameterizedType)
genericType: null;
> if (paramType.getActualTypeArguments().length > 0) {
>   // Fetch the actual type at index 0
>    actualWrapperParamType = InjectionUtils.getType(
>    paramType.getActualTypeArguments(), 0);
>    Class<?> actualWrapperClass = InjectionUtils.getActualType(actualWrapperParamType);
> 				
> This actual class type check can be done inside getJAXBContext. This will do automatic
deep check and setting into JAXB context only for custom payload types. 
> Or else expose the jaxb context map to be accessible when extend AbstractJAXBprovider
or JAXBElementProvider.

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