Problem solved.
Hi Naresh,
I added the JAXBContentResolver.java to the pet catalog app and made it
refer to the appropriate JAXB classes. Now the provider class gets detected
and the root element is displayed :)
Now when I go back and read Japod's blog I understood what he was referring
to.
Thanks a lot for your help in getting me around this.
Thanks,
Gautam Arora
Gautam Arora wrote:
>
> Hi Naresh,
>
> I got the json-from-jaxb project and edited the JAXBContentResolver as:
> this.context = new
> JSONJAXBContext(JSONConfiguration.mapped().rootUnwrapping(false).build(),
> cTypes);
>
> This worked and I now get the root element in the json :) Awesome!
>
> The code in this project also looks much simpler to understand than the
> code generated using the "RESTful Web Services using Entity classes" in
> Netbeans. Unless there was a way to understand what the whole automagic
> was and how a Provider class could be provided.
>
> Thanks, I'll look at more samples and learn from them.
>
> Gautam
>
>
> Naresh-2 wrote:
>>
>> Gautam Arora wrote:
>>> Well, thats true but in the link:
>>> http://weblogs.java.net/blog/caroljmcdonald/archive/2008/08/a_restful_pet_c_1.html
>>> on the table "Example json data"
>>> It shows the generation of the root element.
>>>
>>> You could be correct that as such, the author expected this to be the
>>> behavior and had no issues with parsing it in a dojo grid but I ran into
>>> issues with YUI :)
>>> I'll look into how to define and ContextProvider class and set the
>>> rootUnwrapping=false.
>>>
>>> Early days for me using Jersey. Thanks for your help.
>>> Incase you have some links/pointers to tutorials/samples that address
>>> this
>>> generation of root element, do let me know. I could look and learn.
>>>
>> Please have a look at the Jersey samples [jsonp] and [json-from-jaxb].
>>
>> [jsonp]
>> http://download.java.net/maven/2/com/sun/jersey/samples/jsonp/1.0.2/jsonp-1.0.2-project.zip
>> [json-from-jaxb]
>> http://download.java.net/maven/2/com/sun/jersey/samples/json-from-jaxb/1.0.2/json-from-jaxb-1.0.2-project.zip
>>
>> -Naresh
>>
>>> Thanks,
>>> Gautam
>>>
>>>
>>> Srinivas Naresh Bhimisetty wrote:
>>>
>>>> May be the sample is not using any @Provider annotated class, because
>>>> its showing the data in default JSON format. But as you said, your
>>>> requirement is to get the root element (i.e., items) too. For this you
>>>> will have to define a ContextProvider class, and set the
>>>> "rootUnwrapping" to "false" (the default is "true").
>>>>
>>>> Hope this helps,
>>>> Naresh
>>>>
>>>> Gautam Arora wrote:
>>>>
>>>>> Naresh,
>>>>> Yes you seem to be pointing in the right direction.
>>>>> To start with, the pet catalog app does not have any class with a
>>>>> @Provider
>>>>> annotation
>>>>> also, my logs are:
>>>>> ---------------------------------------------------------------------------------
>>>>> etc etc
>>>>> Scanning for root resource and provider classes in the paths:
>>>>> /Users/gautam/NetBeansProjects/catalogitem/build/web/WEB-INF/lib
>>>>> /Users/gautam/NetBeansProjects/catalogitem/build/web/WEB-INF/classes
>>>>> Root resource classes found:
>>>>> class service.ItemsResource
>>>>> Provider classes found:
>>>>> ---------------------------------------------------------------------------------
>>>>>
>>>>> There is no Provider class listed after the statement "Provider
>>>>> classes
>>>>> found" and I was finding this weird as to why nothing is displayed
>>>>> after
>>>>> that line.
>>>>>
>>>>> This is as per the code available at:
>>>>> https://techdayscode.dev.java.net/files/documents/7105/106278/catalog.zip
>>>>>
>>>>> for the RESTful Pet Catalog app:
>>>>> http://weblogs.java.net/blog/caroljmcdonald/archive/2008/08/a_restful_pet_c_1.html
>>>>>
>>>>> To get the project to this state, all one has to do is:
>>>>> 1. Generate Entity classes from database (Table Item or anything else)
>>>>> 2. Generate Restful Web Services from Entity classes
>>>>>
>>>>> The "Example JSON Data" section of this tutorial does seem to show
>>>>> that
>>>>> the
>>>>> "items" element should be generated and mentions nothing about a
>>>>> @Provider
>>>>> annotation.
>>>>>
>>>>> Could you suggest any more investigative steps or have a look at the
>>>>> code
>>>>> in
>>>>> the above link.
>>>>>
>>>>> Thanks,
>>>>> Gautam
>>>>>
>>>>>
>>>>>
>>>>> Srinivas Naresh Bhimisetty wrote:
>>>>>
>>>>>
>>>>>> Hi Gautam,
>>>>>>
>>>>>> I doubt if your Provider class is being detected or not, are you
>>>>>> able
>>>>>> to see some message like:
>>>>>>
>>>>>> ------------------------------------------------------------
>>>>>> INFO: Provider classes found:
>>>>>> class /yourContextResolver
>>>>>> -------------------------------------------------------------
>>>>>>
>>>>>> /in the logs.
>>>>>>
>>>>>> -Naresh
>>>>>>
>>>>>>
>>>>>> Gautam Arora wrote:
>>>>>>
>>>>>>
>>>>>>> Hi Naresh,
>>>>>>>
>>>>>>> I set rootUnwrapping to false, but still same output as before i.e.
>>>>>>> root
>>>>>>> element is dropped
>>>>>>>
>>>>>>> Let me know if you have any more ideas on what I could try, I'll try
>>>>>>> them
>>>>>>> in
>>>>>>> realtime (well, almost!) :)
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Gautam
>>>>>>>
>>>>>>>
>>>>>>> Srinivas Naresh Bhimisetty wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> Hi Gautam,
>>>>>>>>
>>>>>>>> could you try setting rootUnwrapping to 'false' instead, i.e.,
>>>>>>>>
>>>>>>>> JAXBContext context = new
>>>>>>>> JSONJAXBContext(JSONConfiguration.mapped().rootUnwrapping(false).arrays("items").build(),type);
>>>>>>>>
>>>>>>>> Hope this helps,
>>>>>>>> Naresh
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Gautam Arora wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>> update:
>>>>>>>>>
>>>>>>>>> 1. I moved to Jersey 1.0.2 (downloaded it and added to netbeans)
>>>>>>>>> 2. Edited the UriResolver.resolve() method
>>>>>>>>> original: JAXBContext context = JAXBContext.newInstance(type);
>>>>>>>>> modified: JAXBContext context = new
>>>>>>>>> JSONJAXBContext(JSONConfiguration.mapped().rootUnwrapping(true).arrays("items").build(),type);
>>>>>>>>>
>>>>>>>>> This was as per the steps given at
>>>>>>>>> http://blogs.sun.com/japod/entry/configuring_json_for_restful_web
>>>>>>>>>
>>>>>>>>> But the root element is still getting dropped. Any tips on how to
>>>>>>>>> make
>>>>>>>>> this
>>>>>>>>> work with this app?
>>>>>>>>>
>>>>>>>>> Gautam
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Gautam Arora wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Hi,
>>>>>>>>>> I'm following the RESTful Pet Catalog tutorial from
>>>>>>>>>> http://weblogs.java.net/blog/caroljmcdonald/archive/2008/08/a_restful_pet_c_1.html
>>>>>>>>>>
>>>>>>>>>> The expected JSON response (as per the tutorial is)
>>>>>>>>>> http://localhost:8080/catalog/resources/items/
>>>>>>>>>>
>>>>>>>>>> {"items":{"@uri":"http://localhost:8080/catalog/resources/items","item":[{
>>>>>>>>>> etc etc
>>>>>>>>>>
>>>>>>>>>> but I get the response as:
>>>>>>>>>> {"@uri":"http://localhost:8080/catalog/resources/items","item":[{
>>>>>>>>>> etc
>>>>>>>>>> etc
>>>>>>>>>>
>>>>>>>>>> The "items" label is dropped.
>>>>>>>>>> I've read here on forum posts that say that dropping off the root
>>>>>>>>>> element
>>>>>>>>>> is a desired feature and with newer releases of jersey it should
>>>>>>>>>> be
>>>>>>>>>> fixed(/configurable?)
>>>>>>>>>>
>>>>>>>>>> I've developed the app myself and also tested the same app by
>>>>>>>>>> downloading
>>>>>>>>>> it and running it and and running into the same issue.
>>>>>>>>>>
>>>>>>>>>> I'm using Jersey 1.0. Is this issue fixed in 1.0.2?
>>>>>>>>>>
>>>>>>>>>> Whats the best way to make jersey1.0 generate the "items" label
>>>>>>>>>> for
>>>>>>>>>> this
>>>>>>>>>> app? I've read on posts that we need to add a property for the
>>>>>>>>>> json
>>>>>>>>>> unwrapping but cant figure out where/how to put it in the pet
>>>>>>>>>> catalog
>>>>>>>>>> sample app.
>>>>>>>>>>
>>>>>>>>>> I need this as I'm using YUI which expects this and throws an
>>>>>>>>>> invalid
>>>>>>>>>> label error otherwise
>>>>>>>>>> As per the tutorial, having the label is the expected behavior,
>>>>>>>>>> so
>>>>>>>>>> any
>>>>>>>>>> reasons why I could be missing it?
>>>>>>>>>>
>>>>>>>>>> Thanks,
>>>>>>>>>> Gautam
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
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>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
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>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
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>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
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