public class WeightedSpanTermExtractor extends Object
WeightedSpanTerm
s from a Query
based on whether
Term
s from the Query
are contained in a supplied TokenStream
.Constructor and Description |
---|
WeightedSpanTermExtractor() |
WeightedSpanTermExtractor(String defaultField) |
Modifier and Type | Method and Description |
---|---|
boolean |
getExpandMultiTermQuery() |
TokenStream |
getTokenStream() |
Map<String,WeightedSpanTerm> |
getWeightedSpanTerms(Query query,
TokenStream tokenStream)
Creates a Map of
WeightedSpanTerms from the given Query and TokenStream . |
Map<String,WeightedSpanTerm> |
getWeightedSpanTerms(Query query,
TokenStream tokenStream,
String fieldName)
Creates a Map of
WeightedSpanTerms from the given Query and TokenStream . |
Map<String,WeightedSpanTerm> |
getWeightedSpanTermsWithScores(Query query,
TokenStream tokenStream,
String fieldName,
IndexReader reader)
Creates a Map of
WeightedSpanTerms from the given Query and TokenStream . |
boolean |
isCachedTokenStream() |
void |
setExpandMultiTermQuery(boolean expandMultiTermQuery) |
void |
setWrapIfNotCachingTokenFilter(boolean wrap)
By default,
TokenStream s that are not of the type
CachingTokenFilter are wrapped in a CachingTokenFilter to
ensure an efficient reset - if you are already using a different caching
TokenStream impl and you don't want it to be wrapped, set this to
false. |
public WeightedSpanTermExtractor()
public WeightedSpanTermExtractor(String defaultField)
public Map<String,WeightedSpanTerm> getWeightedSpanTerms(Query query, TokenStream tokenStream) throws IOException
WeightedSpanTerms
from the given Query
and TokenStream
.
query
- that caused hittokenStream
- of text to be highlightedIOException
- If there is a low-level I/O errorpublic Map<String,WeightedSpanTerm> getWeightedSpanTerms(Query query, TokenStream tokenStream, String fieldName) throws IOException
WeightedSpanTerms
from the given Query
and TokenStream
.
query
- that caused hittokenStream
- of text to be highlightedfieldName
- restricts Term's used based on field nameIOException
- If there is a low-level I/O errorpublic Map<String,WeightedSpanTerm> getWeightedSpanTermsWithScores(Query query, TokenStream tokenStream, String fieldName, IndexReader reader) throws IOException
WeightedSpanTerms
from the given Query
and TokenStream
. Uses a supplied
IndexReader
to properly weight terms (for gradient highlighting).
query
- that caused hittokenStream
- of text to be highlightedfieldName
- restricts Term's used based on field namereader
- to use for scoringIOException
- If there is a low-level I/O errorpublic boolean getExpandMultiTermQuery()
public void setExpandMultiTermQuery(boolean expandMultiTermQuery)
public boolean isCachedTokenStream()
public TokenStream getTokenStream()
public void setWrapIfNotCachingTokenFilter(boolean wrap)
TokenStream
s that are not of the type
CachingTokenFilter
are wrapped in a CachingTokenFilter
to
ensure an efficient reset - if you are already using a different caching
TokenStream
impl and you don't want it to be wrapped, set this to
false.Copyright © 2010 - 2020 Adobe. All Rights Reserved