users@javaee-spec.java.net

[javaee-spec users] Re: Consolidation of Type Conversion

From: Martijn Verburg <martijnverburg_at_gmail.com>
Date: Thu, 7 Aug 2014 19:13:46 +0100

Hi Arjan,

Good summary - do you know of the overall javaee EG mailing list?

Cheers,
Martijn


On 7 August 2014 19:10, arjan tijms <arjan.tijms_at_gmail.com> wrote:

> On Thu, Aug 7, 2014 at 2:43 PM, Martijn Verburg <martijnverburg_at_gmail.com>
> wrote:
>
>> +1 to this - it needs a strawman doc for the various spec leads to
>> discuss around. Great thinking BTW - it would be good to have a unifier
>> for this.
>>
>
> I just published my article about this subject, it's at:
> http://arjan-tijms.blogspot.com/2014/08/high-time-to-standardize-java-ee.html
>
> Hopefully this will be a good starting point for further discussion.
>
> Kind regards,
> Arjan Tijms
>
>
>
>> Cheers,
>> Martijn
>>
>>
>> On 7 August 2014 04:24, Reza Rahman <Reza.Rahman_at_oracle.com> wrote:
>>
>>> I think the best course of action is to write up a detailed proposal in
>>> JIRA.
>>>
>>>
>>> On 8/6/2014 10:58 PM, John D. Ament wrote:
>>>
>>>> Hi all,
>>>>
>>>> So in the last few days, i've pulled out what I would consider to be
>>>> the last of my short hair dealing with type conversion in Java EE 7. In my
>>>> project, I'm using JPA 2.1, JAX-RS 2.0 and WebSockets 1.0. In my use case,
>>>> I have some POJOs that I pass around those three layers via JSON. In each
>>>> of these, I have to worry about the type conversion requirements of each of
>>>> them, specifically
>>>>
>>>> JPA leverages an AttributeConverter
>>>> WebSockets use Encoder/Decoder's
>>>> JAX-RS uses MessageBodyReader/Writer
>>>>
>>>> In two of these, it gets a little more confusing as I have to implement
>>>> different interfaces for reading and writing. In total I need to implement
>>>> 5 different interfaces, some of which support CDI injection and others that
>>>> do not.
>>>>
>>>> In addition, if you look across the Java EE spectrum, we have
>>>> additional ways in which type conversion is supported.
>>>>
>>>> JMS 2.0 added support for implicit body reading when getting a message
>>>> and new ways to create messages from some POJOs.
>>>> - We did not add support a serialization process other than
>>>> reconfirming that ObjectMessage requires a Serializable object.
>>>>
>>>> JSF has a Converter interface
>>>>
>>>> I'm sure there are other use cases as well. I'd like to propose that
>>>> the entire platform needs to consolidate down to a single way of converting
>>>> objects, arbitrarily. Then allow each of these specs to build from that
>>>> conversion going forward.
>>>>
>>>> I'm not sure the right course of action. Should this become a ticket
>>>> for this spec? Does something like this require an enhancement
>>>> specification by itself?
>>>>
>>>> Thanks,
>>>>
>>>> John
>>>>
>>>
>>>
>>
>