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From "Wyatt Anderse (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AVRO-2001) Add support for doc in the Ruby library for Avro schemas
Date Wed, 15 Feb 2017 19:37:41 GMT
Wyatt Anderse created AVRO-2001:

             Summary: Add support for doc in the Ruby library for Avro schemas
                 Key: AVRO-2001
                 URL: https://issues.apache.org/jira/browse/AVRO-2001
             Project: Avro
          Issue Type: New Feature
          Components: ruby
            Reporter: Wyatt Anderse
            Priority: Minor

The Avro schema and protocol specification(http://avro.apache.org/docs/current/spec.html)
allows for an optional attribute "doc" defined as, "a JSON string describing this field for
users." Users should be able to include a doc with each field for "records" (http://avro.apache.org/docs/current/spec.html#N10085)
and "enums" (http://avro.apache.org/docs/current/spec.html#N10186).

This doc attribute should be stripped when transforming into "Parsing Canonical Form" (http://avro.apache.org/docs/current/spec.html#N10815).

Currently, the Ruby Avro library (https://github.com/apache/avro/tree/master/lang/ruby) does
not support doc. It is supported in other languages libraries, for example PHP (https://github.com/apache/avro/blob/master/lang/php/lib/avro/schema.php#L46).

Not supporting doc in Ruby causes confusion for the end user, and prevents that end use from
taking advantage of a useful tool for managing complex schema. 

doc should be supported for schema and protocols in the Apache Ruby Avro library.

Possible implementation: https://github.com/lostphilosopher/avro/tree/add_doc_to_schema based
on https://github.com/apache/avro/pull/14/commits/164fb49f80dfaac421639e6249a6f92c802a50b6.

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