Package org.apache.lucene.analysis.util

Class ElisionFilter

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.lucene.analysis.util.ElisionFilter

All Implemented Interfaces:

Closeable, AutoCloseable

public final class ElisionFilter
extends TokenFilter

Removes elisions from a TokenStream. For example, "l'avion" (the plane) will be tokenized as "avion" (plane).

See Also:

• Elision in Wikipedia

Nested Class Summary

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

AttributeSource.AttributeFactory, AttributeSource.State

Constructor Summary

Constructors

Constructor	Description
ElisionFilter(TokenStream input, CharArraySet articles)	Constructs an elision filter with a Set of stop words

Method Summary

Modifier and Type	Method	Description
final boolean	incrementToken()	Increments the TokenStream with a CharTermAttribute without elisioned start

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, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

ElisionFilter

public ElisionFilter(TokenStream input,
 CharArraySet articles)

Constructs an elision filter with a Set of stop words

Parameters:

input - the source TokenStream

articles - a set of stopword articles

Method Details

incrementToken

public final boolean incrementToken()
                             throws IOException

Increments the TokenStream with a CharTermAttribute without elisioned start

Specified by:

incrementToken in class TokenStream

Returns:

false for end of stream; true otherwise

Throws:

IOException