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https://issues.apache.org/jira/browse/BEAM-4454?focusedWorklogId=174250&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-174250
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ASF GitHub Bot logged work on BEAM-4454:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 11/Dec/18 20:04
            Start Date: 11/Dec/18 20:04
    Worklog Time Spent: 10m 
      Work Description: kanterov commented on a change in pull request #7233:  
[BEAM-4454] Add remaining functionality for AVRO schemas
URL: https://github.com/apache/beam/pull/7233#discussion_r240578960
 
 

 ##########
 File path: 
sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/GetterBasedSchemaProvider.java
 ##########
 @@ -35,6 +36,7 @@
   abstract FieldValueGetterFactory fieldValueGetterFactory();
 
   /** Implementing class should override to return a setter factory. */
+  @Nullable
   abstract FieldValueSetterFactory fieldValueSetterFactory();
 
 Review comment:
   As far as I see in the code, the only usage of `fieldValueSetterFactory` is 
`schemaTypeCreatorFactory`. In `AvroSpecificRecordSchema`, 
`fieldValueSetterFactory` is overridden to null, and `schemaTypeCreatorFactory` 
has own implementation. 
   
   As for me, it wasn't easy to follow. What do you think about extracting 
anonymous class from `GetterBasedSchemaProvider#schemaTypeCreatorFactory` and 
removing `GetterBasedSchemaProvider#fieldValueSetterFactory`, or in other 
words, using composition over inheritance, as I feel it doesn't fit as well 
anymore.

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 174250)
    Time Spent: 7h  (was: 6h 50m)

> Provide automatic schema registration for AVROs
> -----------------------------------------------
>
>                 Key: BEAM-4454
>                 URL: https://issues.apache.org/jira/browse/BEAM-4454
>             Project: Beam
>          Issue Type: Sub-task
>          Components: sdk-java-core
>            Reporter: Reuven Lax
>            Assignee: Reuven Lax
>            Priority: Major
>          Time Spent: 7h
>  Remaining Estimate: 0h
>
> Need to make sure this is a compatible change



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