They're tagged on the wire. Getting the type back in some implementations is sometimes a bit tricky: in java, you can use instanceof.
-- Philip On Tue, Jan 17, 2012 at 2:44 PM, Uhlig, Hans <[email protected]> wrote: > Are unions in avro tagged for the type they contain or does this need to > be manually added with an enum. Specifically I am creating a union of > records and wish to know if I need a record containing an enum and the > union of records to be able to parse them back out.**** > > ** ** > > *Hans Uhlig | Senior Systems Engineer | R&D PMO & Ops* > > Aol. Inc. | Direct 650.937.2119 | Email [email protected] | AIM > hansuhlig9 > GPG Key: 0xE523CC64 | Fingerprint: 64F7 9B30 C845 CB54 EDCA 190A 1C3E > 6571 E523 CC64**** > > This message contains privileged and confidential information. Any > dissemination, distribution, copying or other use of this message or > any of its content (data, prices...) to any third parties may only occur > with ADTECH's prior consent.**** > > ** ** >
