Package io.honeycomb.beeline.tracing.utils

Class StringUtils

java.lang.Object

io.honeycomb.beeline.tracing.utils.StringUtils

public class StringUtils
extends Object

Utilities for String parsing and manipulation; primarily for use with AntPathMatcher and BeelineServletFilter.

NB:: This class is forked from the Spring Framework with modifications.

This was to avoid having a dependency on Spring in the core Beeline module, but also to avoid rewriting an implementation of Ant-style path pattern matching.

As per the Apache 2.0 license, the original copyright notice and all author and copyright information have remained in tact.

Constructor Summary

Constructors

Constructor	Description
StringUtils()

Method Summary

Modifier and Type	Method	Description
static boolean	hasText(String input)	Check whether the given CharSequence contains actual text.
static String[]	tokenizeToStringArray(String str, String delimiters, boolean trimTokens, boolean ignoreEmptyTokens)	Tokenize the given String into a String array via a StringTokenizer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StringUtils

public StringUtils()

Method Detail

hasText

public static boolean hasText(String input)

Check whether the given CharSequence contains actual text.

More specifically, this method returns true if the CharSequence is not null, its length is greater than 0, and it contains at least one non-whitespace character.

 StringUtils.hasText(null) = false
 StringUtils.hasText("") = false
 StringUtils.hasText(" ") = false
 StringUtils.hasText("12345") = true
 StringUtils.hasText(" 12345 ") = true
 

Parameters:

input - the CharSequence to check (may be null)

Returns:

true if the CharSequence is not null, its length is greater than 0, and it does not contain whitespace only

See Also:

hasText(String), Character.isWhitespace(char)

tokenizeToStringArray

public static String[] tokenizeToStringArray(String str,
                                             String delimiters,
                                             boolean trimTokens,
                                             boolean ignoreEmptyTokens)

Tokenize the given String into a String array via a StringTokenizer.

The given delimiters string can consist of any number of delimiter characters. Each of those characters can be used to separate tokens. A delimiter is always a single character.

Parameters:

str - the String to tokenize (potentially null or empty)

delimiters - the delimiter characters, assembled as a String (each of the characters is individually considered as a delimiter)

trimTokens - trim the tokens via String.trim()

ignoreEmptyTokens - omit empty tokens from the result array (only applies to tokens that are empty after trimming; StringTokenizer will not consider subsequent delimiters as token in the first place).

Returns:

an array of the tokens

See Also:

StringTokenizer, String.trim()