Zkplo opened a new pull request, #11086:
URL: https://github.com/apache/inlong/pull/11086
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Fixes #11081
### Motivation
Based on
[Mysql](https://dev.mysql.com/doc/refman/8.4/en/expressions.html#temporal-intervals):
1. Added IntervalParser class
```
IntervalParser <-> INTERVAL expr unit ->
Pair(factor,Map(ChronoField,Count)):
`factor`:
1) `expr` can accept strings starting with '-', representing the meaning
of subtraction.
So the positive or negative sign of `factor` indicates whether `expr`
starts with a '-' or not.
2) For units like WEEK and QUARTER, it is not easy to parse,
so WEEK -> ( unit=DAY, adb(factor)=7 ); QUARTER -> ( unit=MONTH,
adb(factor)=3 ).
`Map(ChronoField,Count)`:
IntervalParser will automatically match the corresponding
DateTimeFormatter based on the input `expr`,
Based on DateTimeFormatter, IntervalParser will parse the incoming units
and store them in a Map.
In addition,acceptable expression parsing and specifying parameters in two
ways:
1) interval rowName year -> expression
3) interval 2 year -> fixed parameter
```
2. Modified AdditionParser and SubtractionParser to have the ability of time
calculation.
3. Also, add the corresponding unit test classe: TestAdditionParser,
TestSubtractionParser
### Modifications
<!--Describe the modifications you've done.-->
### Verifying this change
*(Please pick either of the following options)*
- [ ] This change is a trivial rework/code cleanup without any test coverage.
- [x] This change is already covered by existing tests, such as:
*(please describe tests)*
- [ ] This change added tests and can be verified as follows:
*(example:)*
- *Added integration tests for end-to-end deployment with large payloads
(10MB)*
- *Extended integration test for recovery after broker failure*
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