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Date: Sun, 14 May 2017 10:11:05 +0000 (UTC)
From: "Thiruvalluvan M. G. (JIRA)" <jira@apache.org>
To: dev@avro.apache.org
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Subject: [jira] [Commented] (AVRO-1723) Add support for forward declarations
 in avro IDL
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archived-at: Sun, 14 May 2017 10:11:13 -0000


    [ https://issues.apache.org/jira/browse/AVRO-1723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16009655#comment-16009655 ] 

Thiruvalluvan M. G. commented on AVRO-1723:
-------------------------------------------

Hi [~zolyfarkas] I had one problem and couldn't come up with a quick solution. {{./build.sh test}} from {{lang/java}} fails because the compiler does not see the Guava classes. I thought adding the classes in {{lang/java/guava/src/main/java/org/apache/avro/GuavaClasses.java}} would fix the problem. It doesn't.

If you have time, can you take a stab at it?

Thank you

> Add support for forward declarations in avro IDL
> ------------------------------------------------
>
>                 Key: AVRO-1723
>                 URL: https://issues.apache.org/jira/browse/AVRO-1723
>             Project: Avro
>          Issue Type: Improvement
>    Affects Versions: 1.8.0
>            Reporter: Zoltan Farkas
>            Assignee: Zoltan Farkas
>         Attachments: AVRO-1723.patch
>
>
> Currently Recursive data structures like:
> record SampleNode {
>    int count = 0;
>    array<SamplePair> samples = [];
> }
> record SamplePair {
>  string name;
>  SampleNode node;
> }
> It is not possible to declare in IDL,
> however it is possible to declare in avsc (with fix from https://issues.apache.org/jira/browse/AVRO-1667 )
> It is actually not complicated to implement, here is some detail on a possible implementation:
> https://github.com/zolyfarkas/avro/commit/210c50105717149f3daa39b8d4160b8548b8e363
> This would close a capability gap with google protocol buffers...


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