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https://issues.apache.org/jira/browse/FLINK-1666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15117115#comment-15117115
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ASF GitHub Bot commented on FLINK-1666:
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Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/1520
> Clean-up Field Expression Code
> ------------------------------
>
> Key: FLINK-1666
> URL: https://issues.apache.org/jira/browse/FLINK-1666
> Project: Flink
> Issue Type: Improvement
> Components: DataSet API
> Affects Versions: 0.9
> Reporter: Fabian Hueske
> Assignee: Fabian Hueske
>
> Field expressions are supported at various places in the user facing APIs.
> However, not every feature allows exactly the same syntax. Also, code for
> analyzing field expressions is scattered around several places.
> Right now, most of the field expression handling is done in the
> {{PojoTypeInfo}}, {{CaseClassTypeInfo}}, and {{ExpressionKeys}} classes.
> Corner cases are inconsistently handled at several other places.
> We should clean this up and add one utility class that defines the syntax of
> field expressions.
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