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From "Sambit Dikshit (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CXF-4799) Parameterized Classes should be automatically added to JAXBContext
Date Fri, 08 Feb 2013 01:51:12 GMT

    [ https://issues.apache.org/jira/browse/CXF-4799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13573829#comment-13573829
] 

Sambit Dikshit edited comment on CXF-4799 at 2/8/13 1:50 AM:
-------------------------------------------------------------

Comments this out and try in the testCase - testGenericsAndSingleContext2

// provider.init(Collections.singletonList(cri));

Also try a full blown client / server model. Where the client is hitting jaxrs service using
WebClient. How this provider.init method get called in client side WebClient. It gets called
in server side. So when writeTo method is called, it writes correctly in server side. Now
in client side when WebClient is used, the readFrom method of povider tries to read but could
not find the class in jaxb context since the provider.init method is not called in client
side. 

In client side try - WebClient wc = WebClient.create(...); XmlList<SuperBook> xmlList
= wc.get(XmlList.class); // How do we pass the parameter type info here. 
                
      was (Author: sambitd):
    Comments this out and try in the testCase - testGenericsAndSingleContext2

// provider.init(Collections.singletonList(cri));

Also try a full blown client / server model. Where the client is hitting jaxrs service using
WebClient. How this provider.init method get called in client side WebClient. It gets called
in server side. So when writeTo method is called, it writes correctly in server side. Now
in client side when WebClient is used, the readFrom method of povider tries to read but could
not find the class in jaxb context since the provider.init method is not called in client
side. 
                  
> 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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