Re: [xwiki-devs] JSON Velocity Tool (Reloaded) - xwiki-devs@xwiki.org

4 May 2012

On Fri, May 4, 2012 at 1:32 PM, Paul Libbrecht &lt;paul(a)hoplahup.net&gt; wrote:
...
  Hello Marius,

 What has been the final decision here?
 I'm about to need an upgrade to JSON-lib used in Curriki because that library
doesn't stream the json objects out... so I'd better use the same library. Was
Jackson used? JSON.simple?
 In the xwiki-4.0 download, I only see json-lib 2.4. 
As you can see from
https://github.com/xwiki/xwiki-commons/commit/ac22d47d0f826c93b019d9a7f6fe1…
I've used json-lib in the end but the JSONTool API (method signatures)
is not bound to any JSON implementation so we could change the JSON
library later.

Hope this helps,
Marius

...

 thanks in advance

 Paul

 Le 14 mars 2012 à 13:14, Marius Dumitru Florea a écrit :

  On Wed, Mar 14, 2012 at 12:26 PM, Guillaume
Delhumeau
 &lt;gdelhumeau(a)xwiki.com&gt; wrote:
  Hi.

 Can't you add a parser function too ? 
 A parser function needs to return an object:

 * either the JSON object from some JSON library, but that means
 binding the Velocity tool to a specific JSON library and I tried to
 avoid this for the moment until we reach an agreement regarding the
 JSON library to use
 * a wrapper for the JSON object from some JSON library to hide the
 JSON implementation, but that's a lot of work and I don't have time
 for it right now
 * a Java object, but for this you need a JSON-Java mapping, which is
 specific to the JSON library used and it requires some work to make a
 generic binding method

 Right now, we have to use groovy for JSON parsing. It would be better to
 have it in velocity directly, don't you think ? 
 Yes, but I don't have time for it right now.

 Thanks,
 Marius

 Thanks,

 Guillaume

 2012/3/14 Andreas Jonsson &lt;aj(a)member.fsf.org&gt;

  +1

 2012-03-14 09:08, Marius Dumitru Florea skrev:
> Hi devs,
>
> Following the discussion on
> http://lists.xwiki.org/pipermail/devs/2012-March/049889.html I'd like
> to add a JSON Velocity tool that has (for now) just one method:
>
> /**
>  * Serialize a Java object to the JSON format.
>  * <p>
>  * Examples:
>  * <ul>
>  * <li>numbers and boolean values: 23, 13.5, true, false</li>
>  * <li>strings: "one\"two'three" (quotes
included)</li>
>  * <li>arrays and collections: [1, 2, 3]</li>
>  * <li>maps: {"number": 23, "boolean": false,
"string": "value"}</li>
>  * <li>beans: {"enabled": true, "name": "XWiki"}
for a bean that has
> #isEnabled() and #getName() getters</li>
>  * </ul>
>  *
>  * @param object the object to be serialized to the JSON format
>  * @return the JSON-verified string representation of the given object
>  */
> public String serialize(Object object)
>
> This method is able to do what both of the initially proposed methods
> were able and it doesn't expose the JSON library used (so that we can
> change it later if we want). I'll use json-lib for the initial
> implementation and we can move to Jackson or other JSON library later.
>
> WDYT? I'd like to commit this ASAP.
>
> Thanks,
> Marius
> _______________________________________________
> devs mailing list
> devs(a)xwiki.org
> http://lists.xwiki.org/mailman/listinfo/devs
> .
>

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