haruki-830 commented on code in PR #4491:
URL: https://github.com/apache/flink-cdc/pull/4491#discussion_r3718281339
##########
flink-cdc-runtime/src/main/java/org/apache/flink/cdc/runtime/functions/impl/StringFunctions.java:
##########
@@ -62,6 +65,72 @@ public static String regexpReplace(String str, String regex,
String replacement)
}
}
+ /** Returns a string extracted with a specified regular expression and
capture group index. */
+ public static String regexpExtract(String str, String regex) {
+ return regexpExtract(str, regex, 0);
+ }
+
+ public static String regexpExtract(String str, String regex, Number
extractIndex) {
+ if (extractIndex == null || extractIndex.longValue() < 0) {
+ return null;
+ }
+ Matcher matcher = getRegexpMatcher(str, regex);
Review Comment:
Addressed in the latest commit.
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