org.apache.lucene.analysis.tokenattributes

Class KeywordAttributeImpl

java.lang.Object

org.apache.lucene.util.AttributeImpl

org.apache.lucene.analysis.tokenattributes.KeywordAttributeImpl

All Implemented Interfaces:

Serializable, Cloneable, KeywordAttribute, Attribute

public final class KeywordAttributeImpl
extends AttributeImpl
implements KeywordAttribute

This attribute can be used to mark a token as a keyword. Keyword aware TokenStreams can decide to modify a token based on the return value of isKeyword() if the token is modified. Stemming filters for instance can use this attribute to conditionally skip a term if isKeyword() returns true.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.lucene.util.AttributeImpl

enableBackwards

Constructor Summary

Constructors

Constructor and Description
KeywordAttributeImpl()

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Clears the values in this AttributeImpl and resets it to its default value.
void	copyTo(AttributeImpl target) Copies the values from this Attribute into the passed-in target attribute.
boolean	equals(Object obj)
int	hashCode()
boolean	isKeyword() Returns true iff the current token is a keyword, otherwise false/
void	setKeyword(boolean isKeyword) Marks the current token as keyword iff set to true.

Methods inherited from class org.apache.lucene.util.AttributeImpl

clone, reflectAsString, reflectWith, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

KeywordAttributeImpl

public KeywordAttributeImpl()

Method Detail

clear

public void clear()

Description copied from class: AttributeImpl

Clears the values in this AttributeImpl and resets it to its default value. If this implementation implements more than one Attribute interface it clears all.

Specified by:

clear in class AttributeImpl

copyTo

public void copyTo(AttributeImpl target)

Description copied from class: AttributeImpl

Copies the values from this Attribute into the passed-in target attribute. The target implementation must support all the Attributes this implementation supports.

Specified by:

copyTo in class AttributeImpl

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

isKeyword

public boolean isKeyword()

Returns true iff the current token is a keyword, otherwise false/

Specified by:

isKeyword in interface KeywordAttribute

Returns:

true iff the current token is a keyword, otherwise false/

setKeyword

public void setKeyword(boolean isKeyword)

Marks the current token as keyword iff set to true.

Specified by:

setKeyword in interface KeywordAttribute

Parameters:

isKeyword - true iff the current token is a keyword, otherwise false.