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From "Timo Walther (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-4825) Implement a RexExecutor that uses Flink's code generation
Date Thu, 13 Oct 2016 14:13:20 GMT
Timo Walther created FLINK-4825:
-----------------------------------

             Summary: Implement a RexExecutor that uses Flink's code generation
                 Key: FLINK-4825
                 URL: https://issues.apache.org/jira/browse/FLINK-4825
             Project: Flink
          Issue Type: Improvement
          Components: Table API & SQL
            Reporter: Timo Walther


The added {{ReduceExpressionRule}} leads to inconsistent behavior. Because some parts of an
expression are evalutated using Flink's code generation and some parts use Calcite's code
generation.

A very easy example: boolean expressions casted to string are represented as "TRUE/FALSE"
using Calcite and "true/false" using Flink.

I propose to implement the RexExecutor interface and forward the calls to Flink's code generation.
Additional improvements in order to be more standard compliant could be solved in new Jira
issues.



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