public final class EdgeNGramTokenFilter
extends org.apache.lucene.analysis.TokenFilter
This TokenFilter create n-grams from the beginning edge or ending edge of a input token.
| Modifier and Type | Class and Description |
|---|---|
static class |
EdgeNGramTokenFilter.Side
Specifies which side of the input the n-gram should be generated from
|
| Modifier and Type | Field and Description |
|---|---|
static int |
DEFAULT_MAX_GRAM_SIZE |
static int |
DEFAULT_MIN_GRAM_SIZE |
static EdgeNGramTokenFilter.Side |
DEFAULT_SIDE |
| Constructor and Description |
|---|
EdgeNGramTokenFilter(org.apache.lucene.analysis.TokenStream input,
EdgeNGramTokenFilter.Side side,
int minGram,
int maxGram)
Creates EdgeNGramTokenFilter that can generate n-grams in the sizes of the given range
|
EdgeNGramTokenFilter(org.apache.lucene.analysis.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 |
|---|---|
boolean |
incrementToken() |
void |
reset() |
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toStringpublic static final EdgeNGramTokenFilter.Side DEFAULT_SIDE
public static final int DEFAULT_MAX_GRAM_SIZE
public static final int DEFAULT_MIN_GRAM_SIZE
public EdgeNGramTokenFilter(org.apache.lucene.analysis.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(org.apache.lucene.analysis.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 org.apache.lucene.analysis.TokenStreamIOExceptionpublic void reset()
throws IOException
reset in class org.apache.lucene.analysis.TokenFilterIOExceptionCopyright © 2000-2012 Apache Software Foundation. All Rights Reserved.