Even for GSON:

http://www.javacodegeeks.com/2012/04/json-with-gson-and-abstract-classes.html

{
    "type": "Circle",     "properties": {

though I prefer json-io:  @type to make it unambigous for any case with
instance variable named type and does not add another node to the tree..



On Thu, Feb 12, 2015 at 2:58 PM, S Krish <krishnamachari.sudha...@gmail.com>
wrote:

>
> I get your point .. like GSON we should not type the json string output,
> if we want it to adhere abs to spec.
>
> The saving grace for gson in Java is if you just give the root level
> object type, rest of it is automatic typing. We lack that capability in
> Pharo. Though there also for types specified as an interface can then
> require code assistance in deserializing.
>
> So either we follow a meta data route, code helper methods, that is needed
> for deserializing a JSON as spec or let it have an optional @type tag..  to
> make the whole thing automatic
>
> That way we can be both gson / or any other lib compatible for reading
> given format ignoring the extra tag, but helps if given to hydrate the
> object.
>
>
>
>
> On Thu, Feb 12, 2015 at 1:13 PM, Sven Van Caekenberghe <s...@stfx.eu>
> wrote:
>
>> Hi,
>>
>> I will read a bit about json-io and come back to you.
>>
>> In any case, JSON is a standard that explicitly excludes typing info, and
>> yes I know it has been added in several places. NeoJSON's mission is to
>> stay true to the pure spec and to be efficient. Of course, it could be
>> extended or subclassed if its original goals remain in place.
>>
>> BTW, STON is what I think JSON with typing info should be ;-)
>>
>> Sven
>>
>> > On 12 Feb 2015, at 06:33, S Krish <krishnamachari.sudha...@gmail.com>
>> wrote:
>> >
>> >
>> >
>> > Can I extend NeoJSON to be more like json-io.
>> >
>> > * Object serialization
>> > * format synchronization
>> >
>> > To help make it bidirectional for Pharo to external world serialization
>> / deserialization
>> >
>> >
>> > Seems the closest to what is appropriate for Pharo - Scala/ Groovy /
>> Java
>> >
>> >
>> > Gson : no type information..
>> > Jackson: painful annotation or workarounds
>> >
>> >
>>
>>
>>
>

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