Oj Time dump - differences in linux and windows - ruby

Question

I have a time stamp I am obtaining from an Access database. Unfortunately, the timestamp represents the time only, but is stored as 1899-12-30 13:05:00 +0000. The date part of it is in a different field. I need to preserve the data as much as possible while I am storing it in a json blob.
I am using Oj (which is wonderful) to dump the data to json. I have encountered the following behavior on the Windows platform:
irb(main):001:0> require 'oj'
=> true
irb(main):002:0> t = Time.new(1899,12,30,13,5,0) #this is my actual timestamp
=> 1899-12-30 13:05:00 +0000
irb(main):003:0> Oj.dump(t)
RangeError: bignum too big to convert into `long'
from (irb):3:in `dump'
from (irb):3
from C:/RailsInstaller/Ruby2.2.0/bin/irb:11:in `<main>'
irb(main):004:0>
Now, on linux:
2.3.0 :001 > require 'oj'
=> true
2.3.0 :002 > t = Time.new(1899,12,30,13,5,0)
=> 1899-12-30 13:05:00 +0000
2.3.0 :003 > Oj.dump(t)
=> "{\"^t\":-2209114500.000000000e0}"
I need to make this work on Windows because my source database is MS Access. Please help.

Answer 1

Time is not handled properly, but you can convert to float. The result string differ a bit from your original:
irb(main):001:0> require 'oj'
=> true
irb(main):002:0> t = Time.new(1899,12,30,13,5,0)
=> 1899-12-30 13:05:00 +0100
irb(main):003:0> Oj.dump(t)
RangeError: bignum too big to convert into `long'
from (irb):3:in `dump'
from (irb):3
from C:/Ruby23-x64/bin/irb.cmd:19:in `<main>'
irb(main):005:0> Oj.dump(t.to_f)
=> "-2209118100.0"
Or if you need the exact response you can use an array:
irb(main):001:0> require 'oj'
=> true
irb(main):002:0> t = Time.new(1899,12,30,13,5,0)
=> 1899-12-30 13:05:00 +0100
irb(main):012:0> A1 = Array.new(1)
=> [nil]
irb(main):017:0> A1[0] = '^t'
=> "^t"
irb(main):028:0> A1[1] = t.to_f
=> "-2209118100.0"
irb(main):035:0> Oj.dump(A1).tr("[","{").tr("]","}")
=> "{\"^t\",\"-2209118100.0\"}"