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[refactor][perf] cache compiled regex pattern (#10099)
(cherry picked from commit 5161df04d7
)
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68e6e45bb8
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@ -40,9 +40,8 @@ import java.util.regex.Pattern;
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* parameter parse utils
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*/
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public class ParameterUtils {
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private static final String DATE_PARSE_PATTERN = "\\$\\[([^\\$\\]]+)]";
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private static final String DATE_START_PATTERN = "^[0-9]";
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private static final Pattern DATE_PARSE_PATTERN = Pattern.compile("\\$\\[([^\\$\\]]+)]");
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private static final Pattern DATE_START_PATTERN = Pattern.compile("^[0-9]");
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private ParameterUtils() {
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throw new UnsupportedOperationException("Construct ParameterUtils");
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@ -165,15 +164,15 @@ public class ParameterUtils {
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if (templateStr == null) {
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return null;
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}
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Pattern pattern = Pattern.compile(DATE_PARSE_PATTERN);
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StringBuffer newValue = new StringBuffer(templateStr.length());
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Matcher matcher = pattern.matcher(templateStr);
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Matcher matcher = DATE_PARSE_PATTERN.matcher(templateStr);
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while (matcher.find()) {
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String key = matcher.group(1);
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if (Pattern.matches(DATE_START_PATTERN, key)) {
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if (DATE_START_PATTERN.matcher(key).matches()) {
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continue;
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}
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String value = TimePlaceholderUtils.getPlaceHolderTime(key, date);
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