[jira] [Created] (FLINK-991) Add documentation for POJO expression keys

[Shang Yuanchun (Jira)]

Fabian Hueske created FLINK-991:
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             Summary: Add documentation for POJO expression keys
                 Key: FLINK-991
                 URL: https://issues.apache.org/jira/browse/FLINK-991
             Project: Flink
          Issue Type: Bug
          Components: Documentation, Java API
    Affects Versions: 0.6-incubating
            Reporter: Fabian Hueske


The Java API documentation needs to be extended to reflect the extensions added by FLINK-908.
These are basically expression keys for POJO objects, i.e., selecting public fields of POJOs as keys by their names.



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