nla/amberdb — pull request #52 by shuangzhou (2013-11-22 00:59:27+00:00)
Title: File api changes

Hi Shaun,

I've made the following update to amber api:

- update file.getSize() to cater for if failed to retrieve the file from Doss while having a blob id.

- adding migrationdao for converting the encoding of the value from one data type to another:
e.g. from STR to INT, or from INT to LNG

Could you please review these changes?

Thanks

Shuang