[jira] [Created] (FLINK-3489) Refactor Table API before merging into master

["Timo Walther (JIRA)" <ji...@apache.org>]

Timo Walther created FLINK-3489:
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             Summary: Refactor Table API before merging into master
                 Key: FLINK-3489
                 URL: https://issues.apache.org/jira/browse/FLINK-3489
             Project: Flink
          Issue Type: Sub-task
          Components: Table API
            Reporter: Timo Walther


Before we merge the `tableOnCalcite` branch back into master, we should do some package/class refactoring. Here are some ideas:

- Move class {{TreeNode}} into {{expressions}} or its methods directly into {{Expression}}.
- Remove the {{org.apache.flink.api.table.trees}} package.
- Rename {{org.apache.flink.api.table.typeinfo}} to {{typeutils}} to be in sync with other Flink modules.
- Move {{TypeConverter}} to {{typeutils}}
- Remove {{ExpressionException}} it is currently only used by {{typeInfo()}} of {{Expression}}
- Remove {{typeInfo()}} of {{Expression}} and subclasses. It is not used.
- Add `ExecutionEnvironment` as parameter of `TableEnvironment` (necessary for Table API specific input formats) in order to not break the API in future?

Feel free to propose other changes.



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