GitHub user wuchong opened a pull request:
https://github.com/apache/flink/pull/2102
[FLINK-4068] [tableAPI] Move constant computations out of code-generated
The `ReduceExpressionsRule` rule can reduce constant expressions and
replacing them with the corresponding constant. We have
`ReduceExpressionsRule.CALC_INSTANCE` in both `DATASET_OPT_RULES` and
`DATASET_OPT_RULES`, but it dose not take effect. Because it require the
planner have an executor to evaluate the constant expressions. This PR does
this, and resolve FLINK-4068.
And some tests added.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/wuchong/flink FLINK-4068
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2102.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 #2102
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commit 786653b7be085c1e80481137fed3d47c5da2357a
Author: Jark Wu <wuchong...@alibaba-inc.com>
Date: 2016-06-15T09:19:35Z
[FLINK-4068] [tableAPI] Move constant computations out of code-generated
functions.
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