Re: RPC vs HTTP requests

On 01/04/2010 10:57 AM, Thomas Broyer wrote:
>
> On Jan 4, 4:01 pm, Jeff Chimene <jchim...@gmail.com> wrote:
>>
>> I have a question:
>> <snip>
>>
>>> *Performance*
>>
>>> - Client Side - REST with JSON wins over RPC. Browsers are
>>> exceptionally good at json parsing. It is going to be much faster than GWTs
>>> serialization/deserialization mechanism. This is applicable only if you use
>>> javascript overlays. JSONArray/JSONObject/JSONValue classes don't give you
>>> this performance benefit.
>>
>> I've been using the following technique to use the JSON parsing in 2.0. I
>> don't see a specific example in the docs:
>>
>> Report.set(JSONParser.parse(response.getText()).isObject().getJavaScriptObj ect());
>>
>> Where Report is defined as follows:
>>
>> public class Report extends JavaScriptObject {
>>
>> protected Report() {}
>>
>> public final static native Report get() /*-{
>> return $wnd.Report;
>> }-*/;
>>
>> public final static native void set(JavaScriptObject value) /*-{
>> $wnd.Report = value;
>> }-*/;
>>
>> }
>>
>> I don't see any other way to avoid unsafe parsing.
>>
>> Comments?
>
> Use JsonUtils.unsafeEval() to avoid the unused JSONObject created by
> JSONParser.parse(), and then just use .cast() to turn the JSO into a
> Report (unless of course you want a singleton in the $wnd.Report
> global JS variable):
>
> Report myReport = JsonUtils.unsafeEval(response.getText()).cast();

Hi Thomas:

Isn't an aspect of unsafeEval() that it's unsafe? Is JSONParser() also
unsafe? Or do I always want to add comments to the cargo at the
generator, strip such comments at the receiver and call unsafeEval() (&
its equivalent on the server)

From the JSONParser() code, I get the impression that it tries to
differentiate among arrays, strings, &c. I thought that such behavior
was A Good Thing.

>
> --
>
> You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group.
> To post to this group, send email to google-web-toolkit@googlegroups.com.
> To unsubscribe from this group, send email to google-web-toolkit+unsubscribe@googlegroups.com.
> For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
>
>

--

You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to google-web-toolkit+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.