org.apache.lucene.analysis

Class LengthFilter

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.lucene.analysis.FilteringTokenFilter

org.apache.lucene.analysis.LengthFilter

All Implemented Interfaces:

Closeable

public final class LengthFilter
extends FilteringTokenFilter

Removes words that are too long or too short from the stream.

Note: Length is calculated as the number of UTF-16 code units.

Nested Class Summary

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

AttributeSource.AttributeFactory, AttributeSource.State

Field Summary

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

input

Constructor Summary

Constructors

Constructor and Description
LengthFilter(boolean enablePositionIncrements, TokenStream in, int min, int max) Build a filter that removes words that are too long or too short from the text.
LengthFilter(TokenStream in, int min, int max) Deprecated. Use LengthFilter(boolean, TokenStream, int, int) instead.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	accept() Override this method and return if the current input token should be returned by FilteringTokenFilter.incrementToken().

Methods inherited from class org.apache.lucene.analysis.FilteringTokenFilter

getEnablePositionIncrements, incrementToken, reset, setEnablePositionIncrements

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

close, end

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

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

Constructor Detail

LengthFilter

public LengthFilter(boolean enablePositionIncrements,
            TokenStream in,
            int min,
            int max)

Build a filter that removes words that are too long or too short from the text.

LengthFilter

@Deprecated
public LengthFilter(TokenStream in,
                       int min,
                       int max)

Deprecated. Use LengthFilter(boolean, TokenStream, int, int) instead.

Build a filter that removes words that are too long or too short from the text.

Method Detail

accept

public boolean accept()
               throws IOException

Description copied from class: FilteringTokenFilter

Override this method and return if the current input token should be returned by FilteringTokenFilter.incrementToken().

Specified by:

accept in class FilteringTokenFilter

Throws:

IOException