Package org.apache.lucene.analysis.miscellaneous

Class CodepointCountFilter

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.miscellaneous.CodepointCountFilter

All Implemented Interfaces:

Closeable, AutoCloseable, Unwrappable<TokenStream>

public final class CodepointCountFilter
extends FilteringTokenFilter

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

Note: Length is calculated as the number of Unicode codepoints.

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	Description
CodepointCountFilter(TokenStream in, int min, int max)	Create a new CodepointCountFilter.

Method Summary

Modifier and Type	Method	Description
boolean	accept()

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

end, incrementToken, reset

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

close, 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 Detail

CodepointCountFilter

public CodepointCountFilter(TokenStream in,
                            int min,
                            int max)

Create a new CodepointCountFilter. This will filter out tokens whose CharTermAttribute is either too short (Character.codePointCount(char[], int, int) < min) or too long (Character.codePointCount(char[], int, int) > max).

Parameters:

in - the TokenStream to consume

min - the minimum length

max - the maximum length

Method Detail

accept

public boolean accept()

Specified by:

accept in class FilteringTokenFilter