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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3702) DataStream API PojoFieldAccessor doesn't support nested POJOs
Date Wed, 24 Aug 2016 11:39:22 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15434757#comment-15434757
] 

ASF GitHub Bot commented on FLINK-3702:
---------------------------------------

Github user ggevay commented on a diff in the pull request:

    https://github.com/apache/flink/pull/2094#discussion_r76040561
  
    --- Diff: flink-core/src/main/java/org/apache/flink/api/java/typeutils/PojoTypeInfo.java
---
    @@ -317,7 +308,39 @@ public int getFieldIndex(String fieldName) {
     
     		return new PojoSerializer<T>(getTypeClass(), fieldSerializers, reflectiveFields,
config);
     	}
    -	
    +
    +	@Override
    +	@PublicEvolving
    +	public <F> FieldAccessor<T, F> getFieldAccessor(String fieldExpression,
ExecutionConfig config) {
    +		
    +		FieldAccessor.FieldExpressionDecomposition decomp = FieldAccessor.decomposeFieldExpression(fieldExpression);
    --- End diff --
    
    de7a68598d0933ee4016ecb87d27c46eb8011cf4


> DataStream API PojoFieldAccessor doesn't support nested POJOs
> -------------------------------------------------------------
>
>                 Key: FLINK-3702
>                 URL: https://issues.apache.org/jira/browse/FLINK-3702
>             Project: Flink
>          Issue Type: Improvement
>          Components: DataStream API
>    Affects Versions: 1.0.0
>            Reporter: Robert Metzger
>            Assignee: Gabor Gevay
>
> The {{PojoFieldAccessor}} (which is used by {{.sum(String)}} and similar methods) doesn't
support nested POJOs right now.
> As part of FLINK-3697 I'll add a check for a nested POJO and fail with an exception.



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