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Posted to dev@avro.apache.org by "Raymie Stata (JIRA)" <ji...@apache.org> on 2018/11/26 01:03:00 UTC

[jira] [Created] (AVRO-2275) Refactor schema-resolution code from grammar-generation

Raymie Stata created AVRO-2275:
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             Summary: Refactor schema-resolution code from grammar-generation
                 Key: AVRO-2275
                 URL: https://issues.apache.org/jira/browse/AVRO-2275
             Project: Apache Avro
          Issue Type: Improvement
          Components: java
            Reporter: Raymie Stata
            Assignee: Raymie Stata


In my own work to extend AVRO-2090, and also in AVRO-2247, an alternative approach optimizing decoders, we were forced to re-implement Schema resolution logic because it's currently embedded deeply in ResolvingGrammarGenerator.  However, in the past the Avro community found it hard to maintain multiple implementations of the schema resolution code, as it is tedious and error-prone code.

In this JIRA we've refactored the resolution code into a new class called Resolver, and have rewritten ResolvingGrammarGenerator to be a client of this class.  This rewrite passes the full regression suite, including bug-for-bug compatibility with a few questionable resolutions rules, such as the "soft matching" rule for record in unions.



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