[jira] [Created] (FLINK-12253) Setup a class hierarchy for the new type system

[Shang Yuanchun (Jira)]

Timo Walther created FLINK-12253:
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             Summary: Setup a class hierarchy for the new type system
                 Key: FLINK-12253
                 URL: https://issues.apache.org/jira/browse/FLINK-12253
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / API
            Reporter: Timo Walther
            Assignee: Timo Walther


Setup a new class hierarchy around {{DataType}} and {{LogicalType}} in {{table-common}}.

The classes implement the types listed in the table of FLIP-37.

The classes won't be connected to the API yet.



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