Github user twalthr commented on the pull request:
https://github.com/apache/flink/pull/1789#issuecomment-196360615
@vasia I looked into the code again. You can remove the `typeInfo()` of
`Expression` savely. It is only used by `typeInfo()` of other expressions.
Never executed.
Regarding the `ExpressionException` maybe we keep it and rename it to
`ExpressionParserException` because it is only used by the `ExpressionParser`
after removing `typeInfo()`.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
