zzzzzzzs commented on code in PR #20342:
URL: https://github.com/apache/flink/pull/20342#discussion_r969203533
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flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/SqlFunctionUtils.java:
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@@ -371,6 +371,11 @@ public static String repeat(String str, int repeat) {
return EncodingUtils.repeat(str, repeat);
}
+ /** Returns an expr where all characters in from have been replaced with
those in to. */
+ public static String translate3(String str, String search, String
replacement) {
+ return org.apache.commons.lang3.StringUtils.replaceChars(str, search,
replacement);
Review Comment:
Replacechars () is a static method of the stringutils class, which is used
to replace all search characters with replacement characters. And replace() is
a static method of the stringutils class, which optionally accepts the first
maximum number of matches of the search string to be replaced in a given text.
Example:
```java
public static void main(String[] args) {
String s1 = StringUtils.replaceChars("AaaBabbCc", "ab", "123");
String s2 = StringUtils.replace("AaaBabbCc", "ab", "123");
System.out.println("replaceChars:" + s1);
System.out.println("replace:" + s2);
}
```
> replaceChars:A11B122Cc
replace:AaaB123bCc
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