Package org.apache.lucene.tests.analysis

Class MockTokenFilter

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.lucene.tests.analysis.MockTokenFilter

All Implemented Interfaces:

Closeable, AutoCloseable, Unwrappable<TokenStream>

public final class MockTokenFilter
extends TokenFilter

A tokenfilter for testing that removes terms accepted by a DFA.

• Union a list of singletons to act like a stopfilter.
• Use the complement to act like a keepwordfilter
• Use a regex like .{12,} to act like a lengthfilter

Nested Class Summary

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

AttributeSource.State

Field Summary

Fields

Modifier and Type	Field	Description
static final CharacterRunAutomaton	EMPTY_STOPSET	Empty set of stopwords
static final CharacterRunAutomaton	ENGLISH_STOPSET	Set of common english stopwords

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
MockTokenFilter(TokenStream input, CharacterRunAutomaton filter)	Create a new MockTokenFilter.

Method Summary

Modifier and Type	Method	Description
void	end()
boolean	incrementToken()
void	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

Field Details

EMPTY_STOPSET

public static final CharacterRunAutomaton EMPTY_STOPSET

Empty set of stopwords

ENGLISH_STOPSET

public static final CharacterRunAutomaton ENGLISH_STOPSET

Set of common english stopwords

Constructor Details

MockTokenFilter

public MockTokenFilter(TokenStream input,
 CharacterRunAutomaton filter)

Create a new MockTokenFilter.

Parameters:

input - TokenStream to filter

filter - DFA representing the terms that should be removed.

Method Details

incrementToken

public boolean incrementToken()
                       throws IOException

Specified by:

incrementToken in class TokenStream

Throws:

IOException

end

public void end()
         throws IOException

Overrides:

end in class TokenFilter

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class TokenFilter

Throws:

IOException