caishunfeng commented on code in PR #12502:
URL:
https://github.com/apache/dolphinscheduler/pull/12502#discussion_r1002643655
##########
dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/utils/StringUtils.java:
##########
@@ -38,144 +38,6 @@ private StringUtils() {
throw new UnsupportedOperationException("Construct StringUtils");
}
- /**
- * <p>Checks if a CharSequence is empty ("") or null.</p>
- *
- * @param cs the CharSequence to check, may be null
- * @return {@code true} if the CharSequence is empty or null
- */
- public static boolean isEmpty(final CharSequence cs) {
- return cs == null || cs.length() == 0;
- }
-
- /**
- * <p>Checks if a CharSequence is not empty ("") and not null.</p>
- *
- * @param cs the CharSequence to check, may be null
- * @return {@code true} if the CharSequence is not empty and not null
- */
- public static boolean isNotEmpty(final CharSequence cs) {
- return !isEmpty(cs);
- }
-
- /**
- * <p>Checks if a CharSequence is empty (""), null or whitespace only.</p>
- *
- * @param cs the CharSequence to check, may be null
- * @return {@code true} if the CharSequence is null, empty or whitespace
only
- */
- public static boolean isBlank(final CharSequence cs) {
- int strLen;
- if (cs == null || (strLen = cs.length()) == 0) {
- return true;
- }
- for (int i = 0; i < strLen; i++) {
- if (!Character.isWhitespace(cs.charAt(i))) {
- return false;
- }
- }
- return true;
- }
-
- /**
- * <p>Checks if a CharSequence is not empty (""), not null and not
whitespace only.</p>
- *
- * @param cs the CharSequence to check, may be null
- * @return {@code true} if the CharSequence is not empty and not null and
not whitespace only
- */
- public static boolean isNotBlank(final CharSequence cs) {
- return !isBlank(cs);
- }
-
- /**
- * <p>Removes control characters (char <= 32) from both
- * ends of this String, handling {@code null} by returning
- * {@code null}.</p>
- *
- * @param str the String to be trimmed, may be null
- * @return the trimmed string, {@code null} if null String input
- */
- public static String trim(final String str) {
- return str == null ? null : str.trim();
- }
-
- /**
- * <p>Returns either the passed in CharSequence, or if the CharSequence is
- * whitespace, empty ("") or {@code null}, the value of {@code
defaultStr}.</p>
- *
- * @param <T> the specific kind of CharSequence
- * @param str the CharSequence to check, may be null
- * @param defaultStr the default CharSequence to return
- * if the input is whitespace, empty ("") or {@code null}, may be null
- * @return the passed in CharSequence, or the default
- */
- public static <T extends CharSequence> T defaultIfBlank(final T str, final
T defaultStr) {
- return isBlank(str) ? defaultStr : str;
- }
-
- /**
- * <p>Compares two String, returning {@code true} if they represent
- * equal string, ignoring case.</p>
- *
- * @param str1 the first String, may be null
- * @param str2 the second String, may be null
- * @return {@code true} if the String are equal, case insensitive, or
- * both {@code null}
- */
- public static boolean equalsIgnoreCase(String str1, String str2) {
- return str1 == null ? str2 == null : str1.equalsIgnoreCase(str2);
- }
-
- /**
- * <p>Joins the elements of the provided Collection into a single String
- * containing the provided Collection of elements.</p>
- *
- * @param collection the collection, may be null
- * @param separator the separator
- * @return a single String
- */
- public static String join(Collection<?> collection, String separator) {
- return collection == null ? null : join(collection.iterator(),
separator);
- }
-
- /**
- * <p>Joins the elements of the provided Iterator into a single String
- * containing the provided Iterator of elements.</p>
- *
- * @param iterator the iterator, may be null
- * @param separator the separator
- * @return a single String
- */
- public static String join(Iterator<?> iterator, String separator) {
- if (iterator == null) {
- return null;
- } else if (!iterator.hasNext()) {
- return "";
- } else {
- Object first = iterator.next();
- if (!iterator.hasNext()) {
- return first == null ? "" : first.toString();
- } else {
- StringBuilder buf = new StringBuilder(256);
- if (first != null) {
- buf.append(first);
- }
-
- while (iterator.hasNext()) {
- if (separator != null) {
- buf.append(separator);
- }
-
- Object obj = iterator.next();
- if (obj != null) {
- buf.append(obj);
- }
- }
- return buf.toString();
- }
- }
- }
-
public static String escapeJava(String str) {
Review Comment:
Thanks, and then we can remove the StringUtils now.
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