-Re: Support for Serialization and Externalization?
Scott Carey 2012-05-01, 23:30
On 4/23/12 10:37 AM, "Joe Gamache" <[EMAIL PROTECTED]> wrote:
> We have been using Avro successfully to serialize many of our objects, using
> binary encoding, for storage and retrieval. Although the documentation about
> the Reflect Mapping states:
> This API is not recommended except as a stepping stone for systems that
> currently uses Java interfaces to define RPC protocols.
> we used this mapping as that recommendation did not seem to apply. We do not
> use the serialized data for RPC (or any other messaging system). In fact,
> this part has in-place for a while and works exceptionally well.
> Now we would like to "externalize" a smaller subset of the objects for
> interaction with a WebApp. Here we would like to use the JSON encoding and
> the "specific" mapping. We tried having this set of objects implement
> "GenericRecord", however, this then breaks the use of Reflection on these
> objects. [The ReflectData.createSchema method checks for this condition.]
> Can Avro be used to serialize objects one way, and externalize them another?
> [The externalized objects are a subset of the serialized ones.] Perhaps more
> generally, my question is: can both binary encoding and JSON encoding be
> supported on overlapping objects using different mappers? If yes, what is
> the best way to accomplish this?
That should be possible. If not I think It is a bug. The Java reflect API
is supposed to be able to handle Specific and Generic records, or at least
there is supposed to be a way to use them both.
What is the specific error, from what API call? Perhaps it is a simple fix
and you can submit a patch and test to JIRA?
> Thanks for any help - I am still quite a noob here so I greatly appreciate any
> additional details!
> Joe Gamache