org.apache.lucene.analysis.ja.dict

## Class UserDictionary

- java.lang.Object
- - org.apache.lucene.analysis.ja.dict.UserDictionary

- All Implemented Interfaces:
    Dictionary

      public final class UserDictionary
      extends Object
      implements Dictionary

  Class for building a User Dictionary. This class allows for custom segmentation of phrases.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static int` | `LEFT_ID`
    `static int` | `RIGHT_ID`
    `static int` | `WORD_COST`

    - ### Fields inherited from interface org.apache.lucene.analysis.ja.dict.Dictionary

      `INTERNAL_SEPARATOR`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `String` | `getBaseForm(int wordId, char[] surface, int off, int len)` Get base form of word
    `TokenInfoFST` | `getFST()`
    `String` | `getInflectionForm(int wordId)` Get inflection form of tokens
    `String` | `getInflectionType(int wordId)` Get inflection type of tokens
    `int` | `getLeftId(int wordId)` Get left id of specified word
    `String` | `getPartOfSpeech(int wordId)` Get Part-Of-Speech of tokens
    `String` | `getPronunciation(int wordId, char[] surface, int off, int len)` Get pronunciation of tokens
    `String` | `getReading(int wordId, char[] surface, int off, int len)` Get reading of tokens
    `int` | `getRightId(int wordId)` Get right id of specified word
    `int` | `getWordCost(int wordId)` Get word cost of specified word
    `int[][]` | `lookup(char[] chars, int off, int len)` Lookup words in text
    `int[]` | `lookupSegmentation(int phraseID)`
    `static UserDictionary` | `open(Reader reader)`

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### WORD_COST

          public static final int WORD_COST

      See Also:
        Constant Field Values

    - #### LEFT_ID

          public static final int LEFT_ID

      See Also:
        Constant Field Values

    - #### RIGHT_ID

          public static final int RIGHT_ID

      See Also:
        Constant Field Values

  - ### Method Detail

    - #### open

          public static UserDictionary open(Reader reader)
                                     throws IOException

      Throws:
        `IOException`

    - #### lookup

          public int[][] lookup(char[] chars,
                                int off,
                                int len)
                         throws IOException

      Lookup words in text
      Parameters:
        `chars` - text
        `off` - offset into text
        `len` - length of text
      Returns:
        array of {wordId, position, length}
      Throws:
        `IOException`

    - #### getFST

          public TokenInfoFST getFST()

    - #### lookupSegmentation

          public int[] lookupSegmentation(int phraseID)

    - #### getLeftId

          public int getLeftId(int wordId)

      Description copied from interface: `Dictionary`
      Get left id of specified word
      Specified by:
        `getLeftId` in interface `Dictionary`
      Returns:
        left id

    - #### getRightId

          public int getRightId(int wordId)

      Description copied from interface: `Dictionary`
      Get right id of specified word
      Specified by:
        `getRightId` in interface `Dictionary`
      Returns:
        right id

    - #### getWordCost

          public int getWordCost(int wordId)

      Description copied from interface: `Dictionary`
      Get word cost of specified word
      Specified by:
        `getWordCost` in interface `Dictionary`
      Returns:
        word's cost

    - #### getReading

          public String getReading(int wordId,
                                   char[] surface,
                                   int off,
                                   int len)

      Description copied from interface: `Dictionary`
      Get reading of tokens
      Specified by:
        `getReading` in interface `Dictionary`
      Parameters:
        `wordId` - word ID of token
      Returns:
        Reading of the token

    - #### getPartOfSpeech

          public String getPartOfSpeech(int wordId)

      Description copied from interface: `Dictionary`
      Get Part-Of-Speech of tokens
      Specified by:
        `getPartOfSpeech` in interface `Dictionary`
      Parameters:
        `wordId` - word ID of token
      Returns:
        Part-Of-Speech of the token

    - #### getBaseForm

          public String getBaseForm(int wordId,
                                    char[] surface,
                                    int off,
                                    int len)

      Description copied from interface: `Dictionary`
      Get base form of word
      Specified by:
        `getBaseForm` in interface `Dictionary`
      Parameters:
        `wordId` - word ID of token
      Returns:
        Base form (only different for inflected words, otherwise null)

    - #### getPronunciation

          public String getPronunciation(int wordId,
                                         char[] surface,
                                         int off,
                                         int len)

      Description copied from interface: `Dictionary`
      Get pronunciation of tokens
      Specified by:
        `getPronunciation` in interface `Dictionary`
      Parameters:
        `wordId` - word ID of token
      Returns:
        Pronunciation of the token

    - #### getInflectionType

          public String getInflectionType(int wordId)

      Description copied from interface: `Dictionary`
      Get inflection type of tokens
      Specified by:
        `getInflectionType` in interface `Dictionary`
      Parameters:
        `wordId` - word ID of token
      Returns:
        inflection type, or null

    - #### getInflectionForm

          public String getInflectionForm(int wordId)

      Description copied from interface: `Dictionary`
      Get inflection form of tokens
      Specified by:
        `getInflectionForm` in interface `Dictionary`
      Parameters:
        `wordId` - word ID of token
      Returns:
        inflection form, or null

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