textmaven.stemmer.snowball
Class SnowballProgram

java.lang.Object
  textmaven.stemmer.snowball.SnowballProgram

All Implemented Interfaces:

IStemmer

Direct Known Subclasses:

Stemmer_danish, Stemmer_dutch, Stemmer_english, Stemmer_finnish, Stemmer_french, Stemmer_german, Stemmer_italian, Stemmer_lovins, Stemmer_norwegian, Stemmer_porter, Stemmer_portuguese, Stemmer_russian, Stemmer_spanish, Stemmer_swedish

public abstract class SnowballProgram

extends java.lang.Object

implements IStemmer

This is a modified version of the file shipped with the snowball distribution.

Author:

Peter Kolloch

Field Summary

protected int	bra
protected java.lang.StringBuffer	current
protected int	cursor
protected int	ket
protected int	limit
protected int	limit_backward

Constructor Summary

protected

SnowballProgram()

Method Summary

protected java.lang.StringBuffer	assign_to(java.lang.StringBuffer s)
protected void	copy_from(SnowballProgram other)
protected boolean	eq_s_b(int s_size, java.lang.String s)
protected boolean	eq_s(int s_size, java.lang.String s)
protected boolean	eq_v_b(java.lang.StringBuffer s)
protected boolean	eq_v(java.lang.StringBuffer s)
protected int	find_among_b(Among[] v, int v_size)
protected int	find_among(Among[] v, int v_size)
java.lang.String	getCurrent() Get the current string.
boolean	getGreedy() This normalizer is never greedy.
java.lang.String	getLanguage()
java.util.Vector	getStem(IDictionary dict, java.lang.String word) Tries to normalize word to its stem form.
java.lang.String	getStem(java.lang.String word)
protected boolean	in_grouping_b(char[] s, int min, int max)
protected boolean	in_grouping(char[] s, int min, int max)
protected boolean	in_range_b(int min, int max)
protected boolean	in_range(int min, int max)
protected void	insert(int c_bra, int c_ket, java.lang.String s)
protected void	insert(int c_bra, int c_ket, java.lang.StringBuffer s)
protected boolean	out_grouping_b(char[] s, int min, int max)
protected boolean	out_grouping(char[] s, int min, int max)
protected boolean	out_range_b(int min, int max)
protected boolean	out_range(int min, int max)
protected int	replace_s(int c_bra, int c_ket, java.lang.String s)
void	setCurrent(java.lang.String value) Set the current string.
void	setGreedy(boolean flag) Does not have any effect.
void	setLanguage(java.lang.String id)
protected void	slice_check()
protected void	slice_del()
protected void	slice_from(java.lang.String s)
protected void	slice_from(java.lang.StringBuffer s)
protected java.lang.StringBuffer	slice_to(java.lang.StringBuffer s)
abstract boolean	stem()

Methods inherited from class java.lang.Object

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

Field Detail

current

protected java.lang.StringBuffer current

cursor

protected int cursor

limit

protected int limit

limit_backward

protected int limit_backward

bra

protected int bra

ket

protected int ket

Constructor Detail

SnowballProgram

protected SnowballProgram()

Method Detail

setCurrent

public void setCurrent(java.lang.String value)

Set the current string.

getCurrent

public java.lang.String getCurrent()

Get the current string.

copy_from

protected void copy_from(SnowballProgram other)

in_grouping

protected boolean in_grouping(char[] s,
                              int min,
                              int max)

in_grouping_b

protected boolean in_grouping_b(char[] s,
                                int min,
                                int max)

out_grouping

protected boolean out_grouping(char[] s,
                               int min,
                               int max)

out_grouping_b

protected boolean out_grouping_b(char[] s,
                                 int min,
                                 int max)

in_range

protected boolean in_range(int min,
                           int max)

in_range_b

protected boolean in_range_b(int min,
                             int max)

out_range

protected boolean out_range(int min,
                            int max)

out_range_b

protected boolean out_range_b(int min,
                              int max)

eq_s

protected boolean eq_s(int s_size,
                       java.lang.String s)

eq_s_b

protected boolean eq_s_b(int s_size,
                         java.lang.String s)

eq_v

protected boolean eq_v(java.lang.StringBuffer s)

eq_v_b

protected boolean eq_v_b(java.lang.StringBuffer s)

find_among

protected int find_among(Among[] v,
                         int v_size)

find_among_b

protected int find_among_b(Among[] v,
                           int v_size)

replace_s

protected int replace_s(int c_bra,
                        int c_ket,
                        java.lang.String s)

slice_check

protected void slice_check()

slice_from

protected void slice_from(java.lang.String s)

slice_from

protected void slice_from(java.lang.StringBuffer s)

slice_del

protected void slice_del()

insert

protected void insert(int c_bra,
                      int c_ket,
                      java.lang.String s)

insert

protected void insert(int c_bra,
                      int c_ket,
                      java.lang.StringBuffer s)

slice_to

protected java.lang.StringBuffer slice_to(java.lang.StringBuffer s)

assign_to

protected java.lang.StringBuffer assign_to(java.lang.StringBuffer s)

stem

public abstract boolean stem()

getStem

public java.lang.String getStem(java.lang.String word)

getStem

public java.util.Vector getStem(IDictionary dict,
                                java.lang.String word)

Description copied from interface: IStemmer

Tries to normalize word to its stem form.

Specified by:

getStem in interface IStemmer

Parameters:

dict - source to use for normalizing

word - to be normalized

Returns:

Vector holding translations for normalized word.

setLanguage

public void setLanguage(java.lang.String id)

Specified by:

setLanguage in interface IStemmer

getLanguage

public java.lang.String getLanguage()

Specified by:

getLanguage in interface IStemmer

setGreedy

public void setGreedy(boolean flag)

Does not have any effect.

Specified by:

setGreedy in interface IStemmer

Parameters:

flag - if true greedy mode is enabled.

See Also:

IStemmer.setGreedy(boolean)

getGreedy

public boolean getGreedy()

This normalizer is never greedy.

Specified by:

getGreedy in interface IStemmer

Returns:

boolean

See Also:

IStemmer.getGreedy()