com.atlassian.confluence.search.lucene.filter
Class ConfluenceNGramTokenFilter
java.lang.Object
org.apache.lucene.util.AttributeSource
org.apache.lucene.analysis.TokenStream
org.apache.lucene.analysis.TokenFilter
com.atlassian.confluence.search.lucene.filter.ConfluenceNGramTokenFilter
public class ConfluenceNGramTokenFilter
- extends org.apache.lucene.analysis.TokenFilter
Token filter that returns n-grams from the input (excluding start grams).
Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource |
org.apache.lucene.util.AttributeSource.AttributeFactory, org.apache.lucene.util.AttributeSource.State |
Fields inherited from class org.apache.lucene.analysis.TokenFilter |
input |
Method Summary |
org.apache.lucene.analysis.Token |
next()
Returns the next token in the stream, or null at EOS. |
Methods inherited from class org.apache.lucene.analysis.TokenFilter |
close, end, reset |
Methods inherited from class org.apache.lucene.analysis.TokenStream |
getOnlyUseNewAPI, incrementToken, next, setOnlyUseNewAPI |
Methods inherited from class org.apache.lucene.util.AttributeSource |
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, restoreState, toString |
DEFAULT_MIN_NGRAM_SIZE
public static final int DEFAULT_MIN_NGRAM_SIZE
- See Also:
- Constant Field Values
DEFAULT_MAX_NGRAM_SIZE
public static final int DEFAULT_MAX_NGRAM_SIZE
- See Also:
- Constant Field Values
EXCLUDE_START_GRAMS
public static final ConfluenceNGramTokenFilter.Callback EXCLUDE_START_GRAMS
ALL_GRAMS
public static final ConfluenceNGramTokenFilter.Callback ALL_GRAMS
ONLY_START_GRAMS
public static final ConfluenceNGramTokenFilter.Callback ONLY_START_GRAMS
ConfluenceNGramTokenFilter
public ConfluenceNGramTokenFilter(org.apache.lucene.analysis.TokenStream input,
int minGram,
int maxGram,
ConfluenceNGramTokenFilter.Callback callback)
- Creates NGramTokenFilter with given min and max n-grams.
- Parameters:
input
- TokenStream holding the input to be tokenizedminGram
- the smallest n-gram to generatemaxGram
- the largest n-gram to generatecallback
- this is called before a n-gram token is added
ConfluenceNGramTokenFilter
public ConfluenceNGramTokenFilter(org.apache.lucene.analysis.TokenStream input,
ConfluenceNGramTokenFilter.Callback callback)
- Creates NGramTokenFilter with default min and max n-grams.
- Parameters:
input
- TokenStream holding the input to be tokenizedcallback
- this is called before a n-gram token is added
next
public final org.apache.lucene.analysis.Token next()
throws IOException
- Returns the next token in the stream, or null at EOS.
- Overrides:
next
in class org.apache.lucene.analysis.TokenStream
- Throws:
IOException
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