incubator-couchdb-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Adam Kocoloski <kocol...@apache.org>
Subject Re: json/couchdb integer min max values
Date Sun, 22 Mar 2009 22:25:38 GMT
Hi Daniel, I think you won't be able to do the padding inside a  
(JavaScript) view because at that point you'll already be working with  
a floating point number, right?

Adam

On Mar 22, 2009, at 6:23 PM, Daniel Friesen wrote:

> The easiest way to check should just be to throw a few documents  
> with really large numbers in them.
> Also do some views, I think the real issue will be the standard  
> floating point number limitation inside of JavaScript.
>
> If you have numbers that are too large, the catch all way to handle  
> that would probably be to use a string instead and left 0 pad  
> numbers. Though you could probably do that inside of a view itself.
>
> ~Daniel Friesen (Dantman, Nadir-Seen-Fire)
>
> Paul Davis wrote:
>> IIRC, the JSON RFC either doesn't mention limits whatsoever or only
>> mentions that there is no limit.
>>
>> A quick glance at mochijson2.erl which is CouchDB's JSON decoder  
>> looks
>> like its using list_to_integer for its conversion routine. The docs  
>> at
>> [1] on list_to_integer don't mention limits. I'm not at all certain,
>> but I think that erlang has builtin large number support so it may
>> Just Work &trade;. But tracking down any caveats on list_to_integer/1
>> should give you what you need.
>>
>> HTH,
>> Paul Davis
>>
>> [1] http://erlang.org/doc/man/erlang.html
>>
>> On Sun, Mar 22, 2009 at 6:06 PM, Evan McLean <evan@michevan.id.au>  
>> wrote:
>>
>>> Is it documented anywhere what the minimum and maximum values for  
>>> an int
>>> are in couchdb and/or json?
>>>
>>> Based on a 32 bit integer?
>>>
>>> I had a quick scan through the json RFC and couldn't find anything.
>>>
>>> How would you go about efficiently handling very large numbers,
>>> especially if you wanted to use them in (sorted) keys?
>>>
>>> E.
>>>
>>>
>>
>>
>


Mime
View raw message