@Override
    public boolean isMatch(String event) {
      if (regexPattern == null) {
        regexPattern = Pattern.compile(pathPattern.getNodes()[patternIndex].replace("*", ".*"));
      }
      return regexPattern.matcher(event).matches();
    }
The patternNode of the rawNode contains *, like d*.
iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/path/fa/nfa/SimpleNFA.java