Newbie Question

[fancyplants]

Hi,

I am looking to use Gson in my code, as it seems to be a very powerful
library, but I can't find how it does the simple stuff, namely, given
a String input, return a JsonElement output, ie a simple parser.

something like:

Gson gson = new Gson()

String someJson = "{'id':1,'name':'parent','children':[{'id':
2,'name':'child1'},{'id':3,'name':'child2'}]}";

JsonElement parsed = gson.fromJson( someJson );

Am I missing something obvious about the Gson class? It seems easy
enough to go the other way (jsonElement.toString() )

Regards,
FP

[inde...@gmail.com]

As a user, you typically dont use JsonElement and its subclasses. You
should instead just do this:

Object foo = gson.fromJson(someJson, Foo.class);

See user guide for details: http://sites.google.com/site/gson/gson-user-guide

Inder

[fancyplants]

Hi Inder,

I have checked out the user guide, but it all presumes that I have a
set of classes that I want to directly translate into JSON. If I did,
that would be fine,
but the JSON data is coming from a combination of several different
objects. I want to be able to take out certain attributes from those
objects and make up a JSON tree from that. Making up a another class
(ie Foo) that contains fields for each of these things is not really
what I want to do.

Not a problem at the moment - this is for an AJAX request so I can
create the JsonElement tree manually and then just spit out the
toString, although being able to specify single or double quotes
somehow would be nice.

Regards,

FP

[Jacob Tomaw]

FP,

Take a look at this discussion http://groups.google.com/group/google-gson/browse_thread/thread/412b1dab8a67961e/b6fb1b672a348c34#b6fb1b672a348c34

It includes an adapter that might help you out.

It is not the cleanest way of converting a string to a JsonElement, but it works.

Jacob

--
Jacob Tomaw
tfl:The Flatiron Life (http://tomaw.com)
Follow me on Twitter! (http://twitter.com/JacobTomaw)

[fancyplants]

Ah this is just the ticket, thanks!

FP

On Nov 26, 3:14 pm, "Jacob Tomaw" <jacob.to...@gmail.com> wrote:
> FP,
>

> Take a look at this discussionhttp://groups.google.com/group/google-gson/browse_thread/thread/412b1...

>
> It includes an adapter that might help you out.
>
> It is not the cleanest way of converting a string to a JsonElement, but it
> works.
>
> Jacob
>