Package org.apache.lucene.analysis.util

Class StemmerUtil

  • public class StemmerUtil
extends java.lang.Object
    Some commonly-used stemming functions

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static int delete​(char[] s, int pos, int len)
      Delete a character in-place
      static int deleteN​(char[] s, int pos, int len, int nChars)
      Delete n characters in-place
      static boolean endsWith​(char[] s, int len, char[] suffix)
      Returns true if the character array ends with the suffix.
      static boolean endsWith​(char[] s, int len, java.lang.String suffix)
      Returns true if the character array ends with the suffix.
      static boolean startsWith​(char[] s, int len, java.lang.String prefix)
      Returns true if the character array starts with the suffix.

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • startsWith

        public static boolean startsWith​(char[] s,
                                 int len,
                                 java.lang.String prefix)
        Returns true if the character array starts with the suffix.
        Parameters:
        s - Input Buffer
        len - length of input buffer
        prefix - Prefix string to test
        Returns:
        true if s starts with prefix

      • endsWith

        public static boolean endsWith​(char[] s,
                               int len,
                               java.lang.String suffix)
        Returns true if the character array ends with the suffix.
        Parameters:
        s - Input Buffer
        len - length of input buffer
        suffix - Suffix string to test
        Returns:
        true if s ends with suffix

      • endsWith

        public static boolean endsWith​(char[] s,
                               int len,
                               char[] suffix)
        Returns true if the character array ends with the suffix.
        Parameters:
        s - Input Buffer
        len - length of input buffer
        suffix - Suffix string to test
        Returns:
        true if s ends with suffix

      • delete

        public static int delete​(char[] s,
                         int pos,
                         int len)
        Delete a character in-place
        Parameters:
        s - Input Buffer
        pos - Position of character to delete
        len - length of input buffer
        Returns:
        length of input buffer after deletion

      • deleteN

        public static int deleteN​(char[] s,
                          int pos,
                          int len,
                          int nChars)
        Delete n characters in-place
        Parameters:
        s - Input Buffer
        pos - Position of character to delete
        len - Length of input buffer
        nChars - number of characters to delete
        Returns:
        length of input buffer after deletion