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Posted to dev@avro.apache.org by "Thiruvalluvan M. G. (Updated) (JIRA)" <ji...@apache.org> on 2011/11/07 17:24:51 UTC
[jira] [Updated] (AVRO-956) Remove dependency on Flex/Bison

     [ https://issues.apache.org/jira/browse/AVRO-956?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thiruvalluvan M. G. updated AVRO-956:
-------------------------------------

    Description: 
The current schema parser uses Flex/Bison. Making Flex/Bison work with CMake seems difficult. Moreover trying to parse Json directly into in-memory schema object appears hard. The code is not friendly for extensions to implement new features such as namespace, documentation comments etc.

We already have a Json parser in Avro C++ codebase, but is hidden inside the JsonCodec. Bringing it out and implementing a schema parser on top of that (similar to the Java and C# implementations) would fix the problem. The forthcoming patch does just that.

  was:
The current schema parser uses Flex/Bison. Making Flex/Bison work with CMake seems difficult. Moreover trying to parse Json directly into in-memory schema object appears hard. The code is not friendly for extensions to implement new features such as namespace, documentation comments etc.

We already have a Json parser in Avro C++ codebase, but is hidden inside the JsonCodec. Bringing it out and implementing a schema parser on top of that (similar to the Java and C++ implementations) would fix the problem. The forthcoming patch does just that.

    
> Remove dependency on Flex/Bison
> -------------------------------
>
>                 Key: AVRO-956
>                 URL: https://issues.apache.org/jira/browse/AVRO-956
>             Project: Avro
>          Issue Type: Improvement
>          Components: c++
>    Affects Versions: 1.6.1
>            Reporter: Thiruvalluvan M. G.
>            Assignee: Thiruvalluvan M. G.
>             Fix For: 1.7.0
>
>
> The current schema parser uses Flex/Bison. Making Flex/Bison work with CMake seems difficult. Moreover trying to parse Json directly into in-memory schema object appears hard. The code is not friendly for extensions to implement new features such as namespace, documentation comments etc.
> We already have a Json parser in Avro C++ codebase, but is hidden inside the JsonCodec. Bringing it out and implementing a schema parser on top of that (similar to the Java and C# implementations) would fix the problem. The forthcoming patch does just that.

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