[jira] [Created] (FLINK-20624) Refactor StreamExecJoinRule、StreamExecIntervalJoinRule and StreamExecTemporalJoinRule

[Shang Yuanchun (Jira)]

wangsan created FLINK-20624:
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             Summary: Refactor StreamExecJoinRule、StreamExecIntervalJoinRule and StreamExecTemporalJoinRule
                 Key: FLINK-20624
                 URL: https://issues.apache.org/jira/browse/FLINK-20624
             Project: Flink
          Issue Type: Improvement
          Components: Table SQL / Planner
    Affects Versions: 1.13.0
            Reporter: wangsan
             Fix For: 1.13.0


Currentlly, some code are duplicated in `StreamExecJoinRule`、`StreamExecIntervalJoinRule` and `StreamExecTemporalJoinRule`, this JIRA tries to eliminate the code duplication, so we can maintain code easier.

`StreamExecJoinRule`、`StreamExecIntervalJoinRule` and `StreamExecTemporalJoinRule`
are rules for stream-stream join with different match condition, we can add an abstract class `StreamExecJoinRuleBase` as a base implementation for them.



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