org.apache.lucene.analysis.pattern

## Class SimplePatternTokenizerFactory

- java.lang.Object
- - org.apache.lucene.analysis.util.AbstractAnalysisFactory
  - - org.apache.lucene.analysis.util.TokenizerFactory
    - - org.apache.lucene.analysis.pattern.SimplePatternTokenizerFactory

-     public class SimplePatternTokenizerFactory
      extends TokenizerFactory

  Factory for `SimplePatternTokenizer`, for matching tokens based on the provided regexp.

  This tokenizer uses Lucene `RegExp` pattern matching to construct distinct tokens for the input stream. The syntax is more limited than `PatternTokenizer`, but the tokenization is quite a bit faster. It takes two arguments:

  - "pattern" (required) is the regular expression, according to the syntax described at `RegExp`
  - "maxDeterminizedStates" (optional, default 10000) the limit on total state count for the determined automaton computed from the regexp

  The pattern matches the characters to include in a token (not the split characters), and the matching is greedy such that the longest token matching at a given point is created. Empty tokens are never created.

  For example, to match tokens delimited by simple whitespace characters:

       <fieldType name="text_ptn" class="solr.TextField" positionIncrementGap="100">
         <analyzer>
           <tokenizer class="solr.SimplePatternTokenizerFactory" pattern="[^ \t\r\n]+"/>
         </analyzer>
       </fieldType>

  Since:
    6.5.0
  See Also:
    `SimplePatternTokenizer`
  WARNING: This API is experimental and might change in incompatible ways in the next release.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String` | `PATTERN`

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

      `LUCENE_MATCH_VERSION_PARAM, luceneMatchVersion`

  - ### Constructor Summary

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

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `SimplePatternTokenizer` | `create(AttributeFactory factory)` Creates a TokenStream of the specified input using the given AttributeFactory

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

      `availableTokenizers, create, forName, lookupClass, reloadTokenizers`

    - ### 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

    - #### PATTERN

          public static final String PATTERN

      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### SimplePatternTokenizerFactory

          public SimplePatternTokenizerFactory(Map<String,String> args)

      Creates a new SimplePatternTokenizerFactory

  - ### Method Detail

    - #### create

          public SimplePatternTokenizer create(AttributeFactory factory)

      Description copied from class: `TokenizerFactory`
      Creates a TokenStream of the specified input using the given AttributeFactory
      Specified by:
        `create` in class `TokenizerFactory`

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