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From: Harsh J <harsh@cloudera.com>
Date: Tue, 31 Mar 2015 12:43:41 +0530
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 <CAOcnVr3Pi0XQ+yFu4YxBUWAkEGsoC7NkaVMuY7eBmriHiX18-Q@mail.gmail.com>
Subject: Re: Value constraints in schemas?
To: "user@avro apache. org" <user@avro.apache.org>
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No, arbitrary value constraints (aside of "null" checks) cannot be
expressed in the schema currently:
http://avro.apache.org/docs/current/spec.html#schema_primitive. All
values for a given primitive type are taken as a valid one.

On Mon, Mar 30, 2015 at 9:00 PM, Avi Flax <avi@timehop.com> wrote:
> Hi all, I=E2=80=99m new to Avro so I apologize if this is a FAQ =E2=80=94=
 I did try to
> search the list archives, Google, the spec, etc=E2=80=A6
>
> I just wrote a module that serializes and deserializes a certain data
> structure to/from Avro and my module also has a validate method for
> validating value constraints that so far I have yet to see how to
> express in my Avro schema. For example that certain int fields may not
> be 0, or that certain string fields may not be empty.
>
> Is it possible to express such constraints in an Avro schema?
>
> Thanks!
> Avi


--=20
Harsh J