Re: [json-lib-user] fromBean - field order

[<las...@we...>]

Hi,

I made a solution, but not with PropertyDescriptors, but with standard
reflection.
My question is that how can I turn on the order using =
PropertyDescriptors?
My solution is perfect for me, I'm just curios. (Other thing is that you =
are
prefering 3rd party lib instead of java core because of the =
compatibility
with former java versions?)

Lazlo

-----Eredeti =FCzenet-----
Felad=F3: Andres Almiray [mailto:aal...@ya...]=20
K=FCldve: 2006. augusztus 16. 16:02
C=EDmzett: Fogas L=E1szl=F3; jso...@li...
T=E1rgy: Re: [json-lib-user] fromBean - field order

Hi Lazlo,

You are correct, according to the spec: "An object is
an unordered set of name/value pairs."
Its possible to change the lib and let it keep record
of the insertion order, but it wont be using
LinkedHashMap, as that class was introduced in JDK
1.4.

Two solutions are available:
 a) use commons.collection's LinkedMap
 b) home grown Map that preservers order insertion

For option a) a new dependency must be introduced.
For option b) the DRY concept applies.

Once the storage is solved, we can turn on the order
of which PropertyDescriptors are obtained.

 --- Fogas L=E1szl=F3 <las...@we...> escribi=F3:

> Hi,
>=20
> =20
>=20
> I=92m using the JSONObject.fromBean() method and i
> notified, that =96 as the
> JSON specification =96 in an object the lib messes up
> the declared field
> order.
>=20
> It=92s ok for the spec, but not for me. I modded the
> code (use LinkedHashMap
> instead of simple HashMap to take care of the field
> order) The filed order
> in the json text  now almost the same as in my bean,
> but my problem is, that
> the common beanutils propertydescriptor stores the
> fields in =84abc=94 order.=20
>=20
> =20
>=20
> Is there any ready solution for my purpose, or i
> should change the way that
> jsonlib uses reflection. Because
> class.getDeclaredFields(); method gives
> back the declared field order. But if there any
> working solution now, I
> don=92t want to reinvent the wheel.
>=20
> =20
>=20
> Thanks, Lazlo
>=20



-------------------------------------------
Ing. Andres Almiray Jaramillo
http://jroller.com/page/aalmiray
--
What goes up, must come down. Ask any system administrator.
There are 10 types of people in the world: Those who understand binary, =
and
those who don't.
To understand recursion, we must first understand recursion.

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