org.apache.lucene.analysis.miscellaneous

## Class CapitalizationFilterFactory

- java.lang.Object
- - org.apache.lucene.analysis.util.AbstractAnalysisFactory
  - - org.apache.lucene.analysis.util.TokenFilterFactory
    - - org.apache.lucene.analysis.miscellaneous.CapitalizationFilterFactory

-     public class CapitalizationFilterFactory
      extends TokenFilterFactory

  Factory for `CapitalizationFilter`.

  The factory takes parameters:

  - "onlyFirstWord" - should each word be capitalized or all of the words?
  - "keep" - a keep word list. Each word that should be kept separated by whitespace.
  - "keepIgnoreCase - true or false. If true, the keep list will be considered case-insensitive.
  - "forceFirstLetter" - Force the first letter to be capitalized even if it is in the keep list
  - "okPrefix" - do not change word capitalization if a word begins with something in this list. for example if "McK" is on the okPrefix list, the word "McKinley" should not be changed to "Mckinley"
  - "minWordLength" - how long the word needs to be to get capitalization applied. If the minWordLength is 3, "and" > "And" but "or" stays "or"
  - "maxWordCount" - if the token contains more then maxWordCount words, the capitalization is assumed to be correct.

       <fieldType name="text_cptlztn" class="solr.TextField" positionIncrementGap="100">
         <analyzer>
           <tokenizer class="solr.WhitespaceTokenizerFactory"/>
           <filter class="solr.CapitalizationFilterFactory" onlyFirstWord="true"
                 keep="java solr lucene" keepIgnoreCase="false"
                 okPrefix="McK McD McA"/>
         </analyzer>
       </fieldType>

  Since:
    solr 1.3

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `FORCE_FIRST_LETTER`
    `static String` | `KEEP`
    `static String` | `KEEP_IGNORE_CASE`
    `static String` | `MAX_TOKEN_LENGTH`
    `static String` | `MAX_WORD_COUNT`
    `static String` | `MIN_WORD_LENGTH`
    `static String` | `OK_PREFIX`
    `static String` | `ONLY_FIRST_WORD`

    - ### Fields inherited from class org.apache.lucene.analysis.util.AbstractAnalysisFactory

      `LUCENE_MATCH_VERSION_PARAM, luceneMatchVersion`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `CapitalizationFilterFactory(Map<String,String> args)` Creates a new CapitalizationFilterFactory

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `CapitalizationFilter` | `create(TokenStream input)` Transform the specified input TokenStream

    - ### Methods inherited from class org.apache.lucene.analysis.util.TokenFilterFactory

      `availableTokenFilters, forName, lookupClass, reloadTokenFilters`

    - ### Methods inherited from class org.apache.lucene.analysis.util.AbstractAnalysisFactory

      `get, get, get, get, get, getBoolean, getChar, getClassArg, getFloat, getInt, getLines, getLuceneMatchVersion, getOriginalArgs, getPattern, getSet, getSnowballWordSet, getWordSet, isExplicitLuceneMatchVersion, require, require, require, requireBoolean, requireChar, requireFloat, requireInt, setExplicitLuceneMatchVersion, splitAt, splitFileNames`

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

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

- - ### Field Detail

    - #### KEEP

          public static final String KEEP

      See Also:
        Constant Field Values

    - #### KEEP_IGNORE_CASE

          public static final String KEEP_IGNORE_CASE

      See Also:
        Constant Field Values

    - #### OK_PREFIX

          public static final String OK_PREFIX

      See Also:
        Constant Field Values

    - #### MIN_WORD_LENGTH

          public static final String MIN_WORD_LENGTH

      See Also:
        Constant Field Values

    - #### MAX_WORD_COUNT

          public static final String MAX_WORD_COUNT

      See Also:
        Constant Field Values

    - #### MAX_TOKEN_LENGTH

          public static final String MAX_TOKEN_LENGTH

      See Also:
        Constant Field Values

    - #### ONLY_FIRST_WORD

          public static final String ONLY_FIRST_WORD

      See Also:
        Constant Field Values

    - #### FORCE_FIRST_LETTER

          public static final String FORCE_FIRST_LETTER

      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### CapitalizationFilterFactory

          public CapitalizationFilterFactory(Map<String,String> args)

      Creates a new CapitalizationFilterFactory

  - ### Method Detail

    - #### create

          public CapitalizationFilter create(TokenStream input)

      Description copied from class: `TokenFilterFactory`
      Transform the specified input TokenStream
      Specified by:
        `create` in class `TokenFilterFactory`

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