[jira] [Commented] (AVRO-1569) ReflectData.AllowNull fails with polymorphism

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AVRO-1569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14349629#comment-14349629 ] 

ASF GitHub Bot commented on AVRO-1569:
--------------------------------------

GitHub user sachingsachin opened a pull request:

    https://github.com/apache/avro/pull/22

    AVRO-1569: Check base-classes too while resolving unions

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/sachingsachin/avro AVRO-1569

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/avro/pull/22.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #22
    
----
commit eacbb109ef73b670753d3b4adf6f43d29088c7fd
Author: Sachin Goyal <sg...@walmart.com>
Date:   2015-03-05T23:36:45Z

    AVRO-1569: Check base-classes too while resolving unions

----


> ReflectData.AllowNull fails with polymorphism
> ---------------------------------------------
>
>                 Key: AVRO-1569
>                 URL: https://issues.apache.org/jira/browse/AVRO-1569
>             Project: Avro
>          Issue Type: Bug
>    Affects Versions: 1.7.6
>            Reporter: Sachin Goyal
>
> UnresolvedUnionException is thrown if the following structure is serialized with ReflectData.AllowNull
> (Plain ReflectData works fine)
> {code}
> class Base 
> {
>    Integer a = 5;
> }
> class Derived extends Base
> {
>     String b = "Foo";
> }
> class PolymorphicDO
> {
>    Base obj = new Derived();
> }
> // Serialization code:
> ReflectData rdata = ReflectData.AllowNull.get();
> Schema schema = rdata.getSchema(PolymorphicDO.class);
> ReflectDatumWriter<T> datumWriter = new ReflectDatumWriter (PolymorphicDO.class, rdata);
> DataFileWriter<T> fileWriter = new DataFileWriter<T> (datumWriter);
> fileWriter.create(schema, new ByteArrayOutputStream());
> fileWriter.append(new PolymorphicDO());
> {code}



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