Package com.atlassian.jira.util

Class CaseFolding

java.lang.Object
com.atlassian.jira.util.CaseFolding
public class CaseFolding extends Object
Utility for case folding Java Strings. This follows the advice given here. Basically the value is case folded by calling String.toUpperCase(locale).toLowerCase(locale). This is a little better than calling only String.toLowerCase(locale). For example, in German the string "ß" upercase equilavent is "SS". If we only called only String.toLowerCase(java.util.Locale) we would store "ß"in the index which would make matching "SS" impossible. This does not always case fold correctly, for example the Turkish 'I', but it is a good compromise.
Since:
v4.0

  • Constructor Details

    • CaseFolding

      public CaseFolding()

  • Method Details

    • foldString

      public static String foldString(String s1)
      Case fold the passed string using the ENGLISH locale.
      Parameters:
      s1 - the string to case fold. Cannot be null.
      Returns:
      the case folded string.

    • foldUsername

      public static String foldUsername(String username)
      Deprecated.
      Use ApplicationUser.getKey() or IdentifierUtils.toLowerCase(String). Since v6.0
      Case fold the passed username using the method defined by Crowd Embedded. Will return null output for null input.
      Parameters:
      username - the username to case fold.
      Returns:
      the case folded username.

    • foldString

      public static String foldString(String s1, Locale locale)
      Case fold the passed string using the passed locale. You probaly should not use this method because setting a locale may result in non-standard case folding. For example, using the Turkish locale will case fold "I" into "ı" (dotless lowercase letter i).
      Parameters:
      s1 - the string to case fold. Cannot be null.
      locale - the locale to use for folding. Cannot be null.
      Returns:
      the case folded string.