GitHub user viirya opened a pull request:
https://github.com/apache/spark/pull/20043
[SPARK-22856][SQL] Add wrappers for codegen output and nullability
## What changes were proposed in this pull request?
The codegen output of `Expression`, aka `ExprCode`, now encapsulates only
strings of output value (`value`) and nullability (`isNull`). It makes
difficulty for us to know what the output really is. I think it is better if we
can add wrappers for the value and nullability that let us to easily know that.
## How was this patch tested?
Existing tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/viirya/spark-1 SPARK-22856
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20043.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 #20043
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commit 78680cc60c27d645c349451090bfa056380e89f6
Author: Liang-Chi Hsieh <viirya@...>
Date: 2017-12-21T04:22:10Z
Add wrappers for codegen output.
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