Package org.apache.lucene.analysis.compound

# Class HyphenationCompoundWordTokenFilter

java.lang.Object
org.apache.lucene.util.AttributeSource
org.apache.lucene.analysis.TokenStream
org.apache.lucene.analysis.TokenFilter
org.apache.lucene.analysis.compound.CompoundWordTokenFilterBase
org.apache.lucene.analysis.compound.HyphenationCompoundWordTokenFilter

All Implemented Interfaces:
  `Closeable`, `AutoCloseable`, `Unwrappable<TokenStream>`

public class HyphenationCompoundWordTokenFilter extends CompoundWordTokenFilterBase
A `TokenFilter` that decomposes compound words found in many Germanic languages.

"Donaudampfschiff" becomes Donau, dampf, schiff so that you can find "Donaudampfschiff" even when you only enter "schiff". It uses a hyphenation grammar and a word dictionary to achieve this.

- ## Nested Class Summary

  ## Nested classes/interfaces inherited from class org.apache.lucene.analysis.compound.CompoundWordTokenFilterBase

  `CompoundWordTokenFilterBase.CompoundToken`

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

  `AttributeSource.State`

- ## Field Summary

  ### Fields inherited from class org.apache.lucene.analysis.compound.CompoundWordTokenFilterBase

  `DEFAULT_MAX_SUBWORD_SIZE, DEFAULT_MIN_SUBWORD_SIZE, DEFAULT_MIN_WORD_SIZE, dictionary, maxSubwordSize, minSubwordSize, minWordSize, offsetAtt, onlyLongestMatch, termAtt, tokens`

  ### 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
  Description
  `HyphenationCompoundWordTokenFilter(TokenStream input, HyphenationTree hyphenator)`
  Create a HyphenationCompoundWordTokenFilter with no dictionary.
  `HyphenationCompoundWordTokenFilter(TokenStream input, HyphenationTree hyphenator, int minWordSize, int minSubwordSize, int maxSubwordSize)`
  Create a HyphenationCompoundWordTokenFilter with no dictionary.
  `HyphenationCompoundWordTokenFilter(TokenStream input, HyphenationTree hyphenator, CharArraySet dictionary)`
  Creates a new `HyphenationCompoundWordTokenFilter` instance.
  `HyphenationCompoundWordTokenFilter(TokenStream input, HyphenationTree hyphenator, CharArraySet dictionary, int minWordSize, int minSubwordSize, int maxSubwordSize, boolean onlyLongestMatch)`
  Creates a new `HyphenationCompoundWordTokenFilter` instance.
  `HyphenationCompoundWordTokenFilter(TokenStream input, HyphenationTree hyphenator, CharArraySet dictionary, int minWordSize, int minSubwordSize, int maxSubwordSize, boolean onlyLongestMatch, boolean noSubMatches, boolean noOverlappingMatches)`
  Creates a new `HyphenationCompoundWordTokenFilter` instance.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `protected void`
  `decompose()`
  Decomposes the current `CompoundWordTokenFilterBase.termAtt` and places `CompoundWordTokenFilterBase.CompoundToken` instances in the `CompoundWordTokenFilterBase.tokens` list.
  `static HyphenationTree`
  `getHyphenationTree(String hyphenationFilename)`
  Create a hyphenator tree
  `static HyphenationTree`
  `getHyphenationTree(InputSource hyphenationSource)`
  Create a hyphenator tree

  ### Methods inherited from class org.apache.lucene.analysis.compound.CompoundWordTokenFilterBase

  `incrementToken, reset`

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

  `close, end, unwrap`

  ### 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 Details

  - ### HyphenationCompoundWordTokenFilter

    public HyphenationCompoundWordTokenFilter(TokenStream input, HyphenationTree hyphenator, CharArraySet dictionary)
    Creates a new `HyphenationCompoundWordTokenFilter` instance.
    Parameters:
      `input` - the `TokenStream` to process
      `hyphenator` - the hyphenation pattern tree to use for hyphenation
      `dictionary` - the word dictionary to match against.

  - ### HyphenationCompoundWordTokenFilter

    public HyphenationCompoundWordTokenFilter(TokenStream input, HyphenationTree hyphenator, CharArraySet dictionary, int minWordSize, int minSubwordSize, int maxSubwordSize, boolean onlyLongestMatch)
    Creates a new `HyphenationCompoundWordTokenFilter` instance.
    Parameters:
      `input` - the `TokenStream` to process
      `hyphenator` - the hyphenation pattern tree to use for hyphenation
      `dictionary` - the word dictionary to match against.
      `minWordSize` - only words longer than this get processed
      `minSubwordSize` - only subwords longer than this get to the output stream
      `maxSubwordSize` - only subwords shorter than this get to the output stream
      `onlyLongestMatch` - Add only the longest matching subword to the stream

  - ### HyphenationCompoundWordTokenFilter

    public HyphenationCompoundWordTokenFilter(TokenStream input, HyphenationTree hyphenator, CharArraySet dictionary, int minWordSize, int minSubwordSize, int maxSubwordSize, boolean onlyLongestMatch, boolean noSubMatches, boolean noOverlappingMatches)
    Creates a new `HyphenationCompoundWordTokenFilter` instance.
    Parameters:
      `input` - the `TokenStream` to process
      `hyphenator` - the hyphenation pattern tree to use for hyphenation
      `dictionary` - the word dictionary to match against.
      `minWordSize` - only words longer than this get processed
      `minSubwordSize` - only subwords longer than this get to the output stream
      `maxSubwordSize` - only subwords shorter than this get to the output stream
      `onlyLongestMatch` - Add only the longest matching subword to the stream
      `noSubMatches` - Excludes subwords that are enclosed by an other token
      `noOverlappingMatches` - Excludes subwords that overlap with an other subword

  - ### HyphenationCompoundWordTokenFilter

    public HyphenationCompoundWordTokenFilter(TokenStream input, HyphenationTree hyphenator, int minWordSize, int minSubwordSize, int maxSubwordSize)
    Create a HyphenationCompoundWordTokenFilter with no dictionary.

    Calls `HyphenationCompoundWordTokenFilter(matchVersion, input, hyphenator, null, minWordSize, minSubwordSize, maxSubwordSize`

  - ### HyphenationCompoundWordTokenFilter

    public HyphenationCompoundWordTokenFilter(TokenStream input, HyphenationTree hyphenator)
    Create a HyphenationCompoundWordTokenFilter with no dictionary.

    Calls `HyphenationCompoundWordTokenFilter(matchVersion, input, hyphenator, DEFAULT_MIN_WORD_SIZE, DEFAULT_MIN_SUBWORD_SIZE, DEFAULT_MAX_SUBWORD_SIZE`

- ## Method Details

  - ### getHyphenationTree

    public static HyphenationTree getHyphenationTree(String hyphenationFilename) throws IOException
    Create a hyphenator tree
    Parameters:
      `hyphenationFilename` - the filename of the XML grammar to load
    Returns:
      An object representing the hyphenation patterns
    Throws:
      `IOException` - If there is a low-level I/O error.

  - ### getHyphenationTree

    public static HyphenationTree getHyphenationTree(InputSource hyphenationSource) throws IOException
    Create a hyphenator tree
    Parameters:
      `hyphenationSource` - the InputSource pointing to the XML grammar
    Returns:
      An object representing the hyphenation patterns
    Throws:
      `IOException` - If there is a low-level I/O error.

  - ### decompose

    protected void decompose()
    Description copied from class: `CompoundWordTokenFilterBase`
    Decomposes the current `CompoundWordTokenFilterBase.termAtt` and places `CompoundWordTokenFilterBase.CompoundToken` instances in the `CompoundWordTokenFilterBase.tokens` list. The original token may not be placed in the list, as it is automatically passed through this filter.
    Specified by:
      `decompose` in class `CompoundWordTokenFilterBase`