emptyOVO opened a new pull request, #10993:
URL: https://github.com/apache/inlong/pull/10993
…nction
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Fixes #10986
### Motivation
add RegexpMatchesFunction class to support postgresql function
REGEXP_MATCHES(str, pattern), provide unit tests
<!--Explain here the context, and why you're making that change. What is the
problem you're trying to solve.-->
### Modifications
<!--Describe the modifications you've done.-->
### Verifying this change
Matching a single pattern:
Let's say we have a string from which we want to extract substrings that
match a particular pattern
* REGEXP_MATCHES('The quick brown fox', 'quick')--returns {quick}
Extract multiple subpatterns
Multiple substrings can be extracted using capture groups in regular
expressions
* REGEXP_MATCHES('User: Alice, ID: 12345', 'User: (\w+), ID:
(\d+)')--returns {Alice,12345}
Globally match multiple patterns
The g flag can be used when you want to match all the substrings that occur
* REGEXP_MATCHES('foo 123 bar 456', '\d+', 'g')--returns {"123","456"}
Case matching is ignored
Use the i flag to ignore case for matching
* REGEXP_MATCHES('Hello World', 'hello', 'i')--returns {Hello}
Multi-line pattern matching
Using the m flag allows regular expressions to match across multiple lines
* REGEXP_MATCHES('First line\nSecond line', '^Second', 'm')--returns {Second}
Some Announcements：
REGEXP_MATCHES() returns an array, so be careful about using arrays when
processing the results.
If the global flag g is not used, only the first matching substring is
returned.
If there are multiple flags, the effects need to be performed simultaneously
*(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*
### Documentation
- Does this pull request introduce a new feature? (yes / no)
- If yes, how is the feature documented? (not applicable / docs / JavaDocs
/ not documented)
- If a feature is not applicable for documentation, explain why?
- If a feature is not documented yet in this PR, please create a follow-up
issue for adding the documentation
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