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https://issues.apache.org/jira/browse/FLINK-3574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15184870#comment-15184870
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Timo Walther commented on FLINK-3574:
-------------------------------------
Maybe we need some casting/fallback logic in {{getCallGenerator}} to find a
suitable function: first check entire signature, then check signature with
casting. {{addSqlFunctionMethod}} just determine which types the final Java
method needs. The design of the `ScalarFunctions` class is not completely done
yet as we also want to integrate custom user-defined functions later.
RexNodeTranslator is the interface between the Table API and the Calcite stack.
However, we will have a SQL API in the near future that won't go through the
RexNodeTranslator but directly to the CodeGenerator.
> Implement math functions for Table API
> --------------------------------------
>
> Key: FLINK-3574
> URL: https://issues.apache.org/jira/browse/FLINK-3574
> Project: Flink
> Issue Type: Sub-task
> Components: Table API
> Reporter: Timo Walther
> Assignee: Dawid Wysakowicz
>
> {code}
> MOD
> EXP
> POWER
> LN
> LOG10
> ABS
> {code}
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