Class UnifiedHighlighter.TermVectorReusingLeafReader
java.lang.Object
org.apache.lucene.index.IndexReader
org.apache.lucene.index.LeafReader
org.apache.lucene.index.FilterLeafReader
org.apache.lucene.search.uhighlight.UnifiedHighlighter.TermVectorReusingLeafReader
- All Implemented Interfaces:
Closeable
,AutoCloseable
- Enclosing class:
UnifiedHighlighter
Wraps an IndexReader that remembers/caches the last call to
TermVectors.get(int)
so
that if the next call has the same ID, then it is reused. If TV's were column-stride (like
doc-values), there would be no need for this.-
Nested Class Summary
Nested classes/interfaces inherited from class org.apache.lucene.index.FilterLeafReader
FilterLeafReader.FilterFields, FilterLeafReader.FilterPostingsEnum, FilterLeafReader.FilterTerms, FilterLeafReader.FilterTermsEnum
Nested classes/interfaces inherited from class org.apache.lucene.index.IndexReader
IndexReader.CacheHelper, IndexReader.CacheKey, IndexReader.ClosedListener
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Field Summary
FieldsFields inherited from class org.apache.lucene.index.FilterLeafReader
in
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionOptional method: Return aIndexReader.CacheHelper
that can be used to cache based on the content of this leaf regardless of deletions.Optional method: Return aIndexReader.CacheHelper
that can be used to cache based on the content of this reader.Returns aTermVectors
reader for the term vectors of this index.(package private) static IndexReader
wrap
(IndexReader reader) Methods inherited from class org.apache.lucene.index.FilterLeafReader
checkIntegrity, doClose, getBinaryDocValues, getByteVectorValues, getDelegate, getDocValuesSkipper, getFieldInfos, getFloatVectorValues, getLiveDocs, getMetaData, getNormValues, getNumericDocValues, getPointValues, getSortedDocValues, getSortedNumericDocValues, getSortedSetDocValues, maxDoc, numDocs, searchNearestVectors, searchNearestVectors, storedFields, terms, toString, unwrap
Methods inherited from class org.apache.lucene.index.LeafReader
docFreq, getContext, getDocCount, getSumDocFreq, getSumTotalTermFreq, postings, postings, searchNearestVectors, searchNearestVectors, totalTermFreq
Methods inherited from class org.apache.lucene.index.IndexReader
close, decRef, ensureOpen, equals, getRefCount, hasDeletions, hashCode, incRef, leaves, notifyReaderClosedListeners, numDeletedDocs, registerParentReader, tryIncRef
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Field Details
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lastDocId
private int lastDocId -
tvFields
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Constructor Details
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TermVectorReusingLeafReader
TermVectorReusingLeafReader(LeafReader in)
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Method Details
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wrap
- Throws:
IOException
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termVectors
Description copied from class:IndexReader
Returns aTermVectors
reader for the term vectors of this index.This call never returns
null
, even if no term vectors were indexed. The returned instance should only be used by a single thread.Example:
TopDocs hits = searcher.search(query, 10); TermVectors termVectors = reader.termVectors(); for (ScoreDoc hit : hits.scoreDocs) { Fields vector = termVectors.get(hit.doc); }
- Overrides:
termVectors
in classFilterLeafReader
- Throws:
IOException
- If there is a low-level IO error
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getCoreCacheHelper
Description copied from class:LeafReader
Optional method: Return aIndexReader.CacheHelper
that can be used to cache based on the content of this leaf regardless of deletions. Two readers that have the same data but different sets of deleted documents or doc values updates may be considered equal. Consider usingIndexReader.getReaderCacheHelper()
if you need deletions or dv updates to be taken into account.A return value of
null
indicates that this reader is not suited for caching, which is typically the case for short-lived wrappers that alter the content of the wrapped leaf reader.- Specified by:
getCoreCacheHelper
in classLeafReader
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getReaderCacheHelper
Description copied from class:IndexReader
Optional method: Return aIndexReader.CacheHelper
that can be used to cache based on the content of this reader. Two readers that have different data or different sets of deleted documents will be considered different.A return value of
null
indicates that this reader is not suited for caching, which is typically the case for short-lived wrappers that alter the content of the wrapped reader.- Specified by:
getReaderCacheHelper
in classIndexReader
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