public final class EdgeNGramTokenFilter extends TokenFilter
This TokenFilter
create n-grams from the beginning edge or ending edge of a input token.
Modifier and Type | Class and Description |
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static class |
EdgeNGramTokenFilter.Side
Specifies which side of the input the n-gram should be generated from
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AttributeSource.AttributeFactory, AttributeSource.State
Modifier and Type | Field and Description |
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static int |
DEFAULT_MAX_GRAM_SIZE |
static int |
DEFAULT_MIN_GRAM_SIZE |
static EdgeNGramTokenFilter.Side |
DEFAULT_SIDE |
input
Constructor and Description |
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EdgeNGramTokenFilter(TokenStream input,
EdgeNGramTokenFilter.Side side,
int minGram,
int maxGram)
Creates EdgeNGramTokenFilter that can generate n-grams in the sizes of the given range
|
EdgeNGramTokenFilter(TokenStream input,
String sideLabel,
int minGram,
int maxGram)
Creates EdgeNGramTokenFilter that can generate n-grams in the sizes of the given range
|
Modifier and Type | Method and Description |
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boolean |
incrementToken() |
void |
reset() |
close, end
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState
public static final EdgeNGramTokenFilter.Side DEFAULT_SIDE
public static final int DEFAULT_MAX_GRAM_SIZE
public static final int DEFAULT_MIN_GRAM_SIZE
public EdgeNGramTokenFilter(TokenStream input, EdgeNGramTokenFilter.Side side, int minGram, int maxGram)
input
- TokenStream
holding the input to be tokenizedside
- the EdgeNGramTokenFilter.Side
from which to chop off an n-gramminGram
- the smallest n-gram to generatemaxGram
- the largest n-gram to generatepublic EdgeNGramTokenFilter(TokenStream input, String sideLabel, int minGram, int maxGram)
input
- TokenStream
holding the input to be tokenizedsideLabel
- the name of the EdgeNGramTokenFilter.Side
from which to chop off an n-gramminGram
- the smallest n-gram to generatemaxGram
- the largest n-gram to generatepublic final boolean incrementToken() throws IOException
incrementToken
in class TokenStream
IOException
public void reset() throws IOException
reset
in class TokenFilter
IOException
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