org.apache.lucene.analysis.shingle

Class ShingleMatrixFilter.TokenSettingsCodec

java.lang.Object

org.apache.lucene.analysis.shingle.ShingleMatrixFilter.TokenSettingsCodec

Direct Known Subclasses:

ShingleMatrixFilter.OneDimensionalNonWeightedTokenSettingsCodec, ShingleMatrixFilter.SimpleThreeDimensionalTokenSettingsCodec, ShingleMatrixFilter.TwoDimensionalNonWeightedSynonymTokenSettingsCodec

Enclosing class:

ShingleMatrixFilter

public abstract static class ShingleMatrixFilter.TokenSettingsCodec
extends java.lang.Object

Strategy used to code and decode meta data of the tokens from the input stream regarding how to position the tokens in the matrix, set and retreive weight, et c.

Constructor Summary

Constructors

Constructor and Description
TokenSettingsCodec()

Method Summary

Modifier and Type	Method and Description
abstract ShingleMatrixFilter.TokenPositioner	getTokenPositioner(Token token) Retrieves information on how a Token is to be inserted to a ShingleMatrixFilter.Matrix.
abstract float	getWeight(Token token) Have this method return 1f in order to 'disable' weights.
abstract void	setTokenPositioner(Token token, ShingleMatrixFilter.TokenPositioner tokenPositioner) Sets information on how a Token is to be inserted to a ShingleMatrixFilter.Matrix.
abstract void	setWeight(Token token, float weight) Have this method do nothing in order to 'disable' weights.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TokenSettingsCodec

public TokenSettingsCodec()

Method Detail

getTokenPositioner

public abstract ShingleMatrixFilter.TokenPositioner getTokenPositioner(Token token)
                                                                throws java.io.IOException

Retrieves information on how a Token is to be inserted to a ShingleMatrixFilter.Matrix.

Parameters:

token -

Returns:

ShingleMatrixFilter.TokenPositioner

Throws:

java.io.IOException

setTokenPositioner

public abstract void setTokenPositioner(Token token,
                                        ShingleMatrixFilter.TokenPositioner tokenPositioner)

Sets information on how a Token is to be inserted to a ShingleMatrixFilter.Matrix.

Parameters:

token -

tokenPositioner -

getWeight

public abstract float getWeight(Token token)

Have this method return 1f in order to 'disable' weights.

Parameters:

token -

Returns:

the weight of parameter token

setWeight

public abstract void setWeight(Token token,
                               float weight)

Have this method do nothing in order to 'disable' weights.

Parameters:

token -

weight -