org.apache.lucene.analysis.miscellaneous

## Class PatternKeywordMarkerFilter

- java.lang.Object
- - org.apache.lucene.util.AttributeSource
  - - org.apache.lucene.analysis.TokenStream
    - - org.apache.lucene.analysis.TokenFilter
      - - org.apache.lucene.analysis.miscellaneous.KeywordMarkerFilter
        - - org.apache.lucene.analysis.miscellaneous.PatternKeywordMarkerFilter

- All Implemented Interfaces:
    Closeable, AutoCloseable

      public final class PatternKeywordMarkerFilter
      extends KeywordMarkerFilter

  Marks terms as keywords via the `KeywordAttribute`. Each token that matches the provided pattern is marked as a keyword by setting `KeywordAttribute.setKeyword(boolean)` to `true`.

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource

      `AttributeSource.State`

  - ### Field Summary

    - ### Fields inherited from class org.apache.lucene.analysis.TokenFilter

      `input`

    - ### Fields inherited from class org.apache.lucene.analysis.TokenStream

      `DEFAULT_TOKEN_ATTRIBUTE_FACTORY`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `PatternKeywordMarkerFilter(TokenStream in, Pattern pattern)` Create a new `PatternKeywordMarkerFilter`, that marks the current token as a keyword if the tokens term buffer matches the provided `Pattern` via the `KeywordAttribute`.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected boolean` | `isKeyword()`

    - ### Methods inherited from class org.apache.lucene.analysis.miscellaneous.KeywordMarkerFilter

      `incrementToken`

    - ### Methods inherited from class org.apache.lucene.analysis.TokenFilter

      `close, end, reset`

    - ### Methods inherited from class org.apache.lucene.util.AttributeSource

      `addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, endAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, removeAllAttributes, restoreState, toString`

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

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### PatternKeywordMarkerFilter

          public PatternKeywordMarkerFilter(TokenStream in,
                                            Pattern pattern)

      Create a new `PatternKeywordMarkerFilter`, that marks the current token as a keyword if the tokens term buffer matches the provided `Pattern` via the `KeywordAttribute`.
      Parameters:
        `in` - TokenStream to filter
        `pattern` - the pattern to apply to the incoming term buffer

  - ### Method Detail

    - #### isKeyword

          protected boolean isKeyword()

      Specified by:
        `isKeyword` in class `KeywordMarkerFilter`

Copyright © 2000-2019 Apache Software Foundation. All Rights Reserved.