[GitHub] flink pull request #5438: [FLINK-8617][TableAPI & SQL] Fix code generation b...

[Xpray]

GitHub user Xpray opened a pull request:

    https://github.com/apache/flink/pull/5438

    [FLINK-8617][TableAPI & SQL] Fix code generation bug while accessing …

    
    ## What is the purpose of the change
    fix code generation error in MapGet
    
    
    ## Brief change log
    handle nullTerm of MapGet GeneratedExpression correctly.
    
    
    ## Verifying this change
    
    *(Please pick either of the following options)*
    
    This change added tests and can be verified as follows:
    
    ```
    run org.apache.flink.table.runtime.batch.sql.CalcITCase testMapGet()
    run org.apache.flink.table.runtime.batch.table.CalcITCase testMapget()
    run org.apache.flink.table.runtime.stream.table.CalcITCase testMapGet()
    run org.apache.flink.table.runtime.stream.sql.SqlITCase testMapGet()
    ```
    
    ## Does this pull request potentially affect one of the following parts:
    
      - Dependencies (does it add or upgrade a dependency): 
         no
      - The public API, i.e., is any changed class annotated with 
`@Public(Evolving)`: 
         no
      - The serializers: 
         no
      - The runtime per-record code paths (performance sensitive): 
         no
      - Anything that affects deployment or recovery: JobManager (and its 
components), Checkpointing, Yarn/Mesos, ZooKeeper:
         no
      - The S3 file system connector:  
         no
    
    ## Documentation
    
      - Does this pull request introduce a new feature? 
         no


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

    $ git pull https://github.com/Xpray/flink FLINK-8617

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

    https://github.com/apache/flink/pull/5438.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 #5438
    
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commit d618aac64156a9fd86c8367d6594e593521a8d8b
Author: Xpray <leonxpray@...>
Date:   2018-02-09T02:17:16Z

    [FLINK-8617][TableAPI & SQL] Fix code generation bug while accessing Map 
type

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