Uses of Class
org.apache.lucene.index.IndexReader
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Packages that use IndexReader Package Description org.apache.lucene.index Code to maintain and access indices.org.apache.lucene.search Code to search indices. -
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Uses of IndexReader in org.apache.lucene.index
Classes in org.apache.lucene.index with type parameters of type IndexReader Modifier and Type Class Description class
BaseCompositeReader<R extends IndexReader>
Base class for implementingCompositeReader
s based on an array of sub-readers.Subclasses of IndexReader in org.apache.lucene.index Modifier and Type Class Description class
BaseCompositeReader<R extends IndexReader>
Base class for implementingCompositeReader
s based on an array of sub-readers.class
CodecReader
LeafReader implemented by codec APIs.class
CompositeReader
Instances of this reader type can only be used to get stored fields from the underlying LeafReaders, but it is not possible to directly retrieve postings.class
DirectoryReader
DirectoryReader is an implementation ofCompositeReader
that can read indexes in aDirectory
.class
ExitableDirectoryReader
TheExitableDirectoryReader
wraps a real indexDirectoryReader
and allows for aQueryTimeout
implementation object to be checked periodically to see if the thread should exit or not.static class
ExitableDirectoryReader.ExitableFilterAtomicReader
Wrapper class for another FilterAtomicReader.class
FilterCodecReader
AFilterCodecReader
contains another CodecReader, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.class
FilterDirectoryReader
A FilterDirectoryReader wraps another DirectoryReader, allowing implementations to transform or extend it.class
FilterLeafReader
AFilterLeafReader
contains another LeafReader, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality.class
LeafReader
LeafReader
is an abstract class, providing an interface for accessing an index.class
MultiReader
ACompositeReader
which reads multiple indexes, appending their content.class
ParallelCompositeReader
AnCompositeReader
which reads multiple, parallel indexes.class
ParallelLeafReader
AnLeafReader
which reads multiple, parallel indexes.class
SegmentReader
IndexReader implementation over a single segment.class
SoftDeletesDirectoryReaderWrapper
This reader filters out documents that have a doc values value in the given field and treat these documents as soft deleted.class
SortingCodecReader
AnCodecReader
which supports sorting documents by a givenSort
.class
StandardDirectoryReader
Default implementation ofDirectoryReader
.Methods in org.apache.lucene.index that return IndexReader Modifier and Type Method Description abstract IndexReader
IndexReaderContext. reader()
Returns theIndexReader
, this context represents.Methods in org.apache.lucene.index that return types with arguments of type IndexReader Modifier and Type Method Description protected abstract List<? extends IndexReader>
CompositeReader. getSequentialSubReaders()
Expert: returns the sequential sub readers that this reader is logically composed of.Methods in org.apache.lucene.index with parameters of type IndexReader Modifier and Type Method Description static BinaryDocValues
MultiDocValues. getBinaryValues(IndexReader r, String field)
Returns a BinaryDocValues for a reader's docvalues (potentially merging on-the-fly)static int
PointValues. getDocCount(IndexReader reader, String field)
Return the cumulated number of docs that have points across all leaves of the givenIndexReader
.static Collection<String>
FieldInfos. getIndexedFields(IndexReader reader)
Returns a set of names of fields that have a terms index.static Bits
MultiBits. getLiveDocs(IndexReader reader)
Returns a singleBits
instance for this reader, merging live Documents on the fly.static byte[]
PointValues. getMaxPackedValue(IndexReader reader, String field)
Return the maximum packed values across all leaves of the givenIndexReader
.static FieldInfos
FieldInfos. getMergedFieldInfos(IndexReader reader)
Call this to get the (merged) FieldInfos for a composite reader.static byte[]
PointValues. getMinPackedValue(IndexReader reader, String field)
Return the minimum packed values across all leaves of the givenIndexReader
.static NumericDocValues
MultiDocValues. getNormValues(IndexReader r, String field)
Returns a NumericDocValues for a reader's norms (potentially merging on-the-fly).static NumericDocValues
MultiDocValues. getNumericValues(IndexReader r, String field)
Returns a NumericDocValues for a reader's docvalues (potentially merging on-the-fly)static SortedNumericDocValues
MultiDocValues. getSortedNumericValues(IndexReader r, String field)
Returns a SortedNumericDocValues for a reader's docvalues (potentially merging on-the-fly)static SortedSetDocValues
MultiDocValues. getSortedSetValues(IndexReader r, String field)
Returns a SortedSetDocValues for a reader's docvalues (potentially doing extremely slow things).static SortedDocValues
MultiDocValues. getSortedValues(IndexReader r, String field)
Returns a SortedDocValues for a reader's docvalues (potentially doing extremely slow things).static PostingsEnum
MultiTerms. getTermPostingsEnum(IndexReader r, String field, BytesRef term)
ReturnsPostingsEnum
for the specified field and term.static PostingsEnum
MultiTerms. getTermPostingsEnum(IndexReader r, String field, BytesRef term, int flags)
ReturnsPostingsEnum
for the specified field and term, with control over whether freqs, positions, offsets or payloads are required.static Terms
MultiTerms. getTerms(IndexReader r, String field)
This method may return null if the field does not exist or if it has no terms.void
IndexReader. registerParentReader(IndexReader reader)
Expert: This method is called byIndexReader
s which wrap other readers (e.g.static long
PointValues. size(IndexReader reader, String field)
Return the cumulated number of points across all leaves of the givenIndexReader
.long
IndexWriter. tryDeleteDocument(IndexReader readerIn, int docID)
Expert: attempts to delete by document ID, as long as the provided reader is a near-real-time reader (fromDirectoryReader.open(IndexWriter)
).long
IndexWriter. tryUpdateDocValue(IndexReader readerIn, int docID, Field... fields)
Expert: attempts to update doc values by document ID, as long as the provided reader is a near-real-time reader (fromDirectoryReader.open(IndexWriter)
).Constructors in org.apache.lucene.index with parameters of type IndexReader Constructor Description BaseCompositeReader(R[] subReaders, Comparator<R> subReadersSorter)
Constructs aBaseCompositeReader
on the given subReaders.MultiReader(IndexReader... subReaders)
Construct a MultiReader aggregating the named set of (sub)readers.MultiReader(IndexReader[] subReaders, boolean closeSubReaders)
Construct a MultiReader aggregating the named set of (sub)readers.MultiReader(IndexReader[] subReaders, Comparator<IndexReader> subReadersSorter, boolean closeSubReaders)
Construct a MultiReader aggregating the named set of (sub)readers.Constructor parameters in org.apache.lucene.index with type arguments of type IndexReader Constructor Description MultiReader(IndexReader[] subReaders, Comparator<IndexReader> subReadersSorter, boolean closeSubReaders)
Construct a MultiReader aggregating the named set of (sub)readers. -
Uses of IndexReader in org.apache.lucene.search
Methods in org.apache.lucene.search that return IndexReader Modifier and Type Method Description IndexReader
IndexSearcher. getIndexReader()
Return theIndexReader
this searches.Methods in org.apache.lucene.search with parameters of type IndexReader Modifier and Type Method Description static IndexSearcher
SearcherManager. getSearcher(SearcherFactory searcherFactory, IndexReader reader, IndexReader previousReader)
Expert: creates a searcher from the providedIndexReader
using the providedSearcherFactory
.IndexSearcher
SearcherFactory. newSearcher(IndexReader reader, IndexReader previousReader)
Returns a new IndexSearcher over the given reader.Query
DocValuesRewriteMethod. rewrite(IndexReader reader, MultiTermQuery query)
abstract Query
MultiTermQuery.RewriteMethod. rewrite(IndexReader reader, MultiTermQuery query)
Query
Query. rewrite(IndexReader reader)
Deprecated.Query
ScoringRewrite. rewrite(IndexReader reader, MultiTermQuery query)
Query
TopTermsRewrite. rewrite(IndexReader reader, MultiTermQuery query)
Constructors in org.apache.lucene.search with parameters of type IndexReader Constructor Description IndexSearcher(IndexReader r)
Creates a searcher searching the provided index.IndexSearcher(IndexReader r, Executor executor)
Runs searches for each segment separately, using the provided Executor.
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