Uses of Class
org.apache.lucene.index.IndexReader

Packages that use IndexReader

Package	Description
org.apache.lucene.index	Code to maintain and access indices.
org.apache.lucene.search	Code to search indices.
org.apache.lucene.search.spans	The calculus of spans.

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 implementing CompositeReaders based on an array of sub-readers.

Subclasses of IndexReader in org.apache.lucene.index

Modifier and Type	Class	Description
class	AtomicReader	AtomicReader is an abstract class, providing an interface for accessing an index.
class	BaseCompositeReader<R extends IndexReader>	Base class for implementing CompositeReaders based on an array of sub-readers.
class	CompositeReader	Instances of this reader type can only be used to get stored fields from the underlying AtomicReaders, but it is not possible to directly retrieve postings.
class	DirectoryReader	DirectoryReader is an implementation of CompositeReader that can read indexes in a Directory.
class	FilterAtomicReader	A FilterAtomicReader contains another AtomicReader, 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	MultiReader	A CompositeReader which reads multiple indexes, appending their content.
class	ParallelAtomicReader	An AtomicReader which reads multiple, parallel indexes.
class	ParallelCompositeReader	An CompositeReader which reads multiple, parallel indexes.
final class	SegmentReader	IndexReader implementation over a single segment.
final class	SlowCompositeReaderWrapper	This class forces a composite reader (eg a MultiReader or DirectoryReader) to emulate an atomic reader.

Methods in org.apache.lucene.index that return IndexReader

Modifier and Type	Method	Description
abstract IndexReader	IndexReaderContext.reader()	Returns the IndexReader, 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
void	IndexWriter.addIndexes(IndexReader... readers)	Merges the provided indexes into this index.
long	TrackingIndexWriter.addIndexes(IndexReader... readers)	Calls IndexWriter.addIndexes(IndexReader...) and returns the generation that reflects this change.
static BinaryDocValues	MultiDocValues.getBinaryValues(IndexReader r, String field)	Returns a BinaryDocValues for a reader's docvalues (potentially merging on-the-fly)
static Bits	MultiDocValues.getDocsWithField(IndexReader r, String field)	Returns a Bits for a reader's docsWithField (potentially merging on-the-fly)
static Fields	MultiFields.getFields(IndexReader reader)	Returns a single Fields instance for this reader, merging fields/terms/docs/positions on the fly.
static Collection<String>	MultiFields.getIndexedFields(IndexReader reader)	Call this to get the (merged) FieldInfos representing the set of indexed fields only for a composite reader.
static Bits	MultiFields.getLiveDocs(IndexReader reader)	Returns a single Bits instance for this reader, merging live Documents on the fly.
static FieldInfos	MultiFields.getMergedFieldInfos(IndexReader reader)	Call this to get the (merged) FieldInfos for a composite reader.
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 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 DocsEnum	MultiFields.getTermDocsEnum(IndexReader r, Bits liveDocs, String field, BytesRef term)	Returns DocsEnum for the specified field & term.
static DocsEnum	MultiFields.getTermDocsEnum(IndexReader r, Bits liveDocs, String field, BytesRef term, int flags)	Returns DocsEnum for the specified field & term, with control over whether freqs are required.
static DocsAndPositionsEnum	MultiFields.getTermPositionsEnum(IndexReader r, Bits liveDocs, String field, BytesRef term)	Returns DocsAndPositionsEnum for the specified field & term.
static DocsAndPositionsEnum	MultiFields.getTermPositionsEnum(IndexReader r, Bits liveDocs, String field, BytesRef term, int flags)	Returns DocsAndPositionsEnum for the specified field & term, with control over whether offsets and payloads are required.
static Terms	MultiFields.getTerms(IndexReader r, String field)	This method may return null if the field does not exist.
void	IndexReader.ReaderClosedListener.onClose(IndexReader reader)	Invoked when the IndexReader is closed.
final void	IndexReader.registerParentReader(IndexReader reader)	Expert: This method is called by IndexReaders which wrap other readers (e.g.
boolean	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 (from DirectoryReader.open(IndexWriter,boolean)).
long	TrackingIndexWriter.tryDeleteDocument(IndexReader reader, int docID)	Cals IndexWriter.tryDeleteDocument(IndexReader,int) and returns the generation that reflects this change.
static AtomicReader	SlowCompositeReaderWrapper.wrap(IndexReader reader)	This method is sugar for getting an AtomicReader from an IndexReader of any kind.

Constructors in org.apache.lucene.index with parameters of type IndexReader

Modifier	Constructor	Description
protected	BaseCompositeReader(R[] subReaders)	Constructs a BaseCompositeReader 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.

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 the IndexReader 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)	Expert: creates a searcher from the provided IndexReader using the provided SearcherFactory.
IndexSearcher	SearcherFactory.newSearcher(IndexReader reader)	Returns a new IndexSearcher over the given reader.
Query	BooleanQuery.rewrite(IndexReader reader)
Query	ConstantScoreQuery.rewrite(IndexReader reader)
Query	DisjunctionMaxQuery.rewrite(IndexReader reader)	Optimize our representation and our subqueries representations
Query	DocTermOrdsRewriteMethod.rewrite(IndexReader reader, MultiTermQuery query)
Query	FieldCacheRewriteMethod.rewrite(IndexReader reader, MultiTermQuery query)
Query	FilteredQuery.rewrite(IndexReader reader)	Rewrites the query.
Query	MultiPhraseQuery.rewrite(IndexReader reader)
final Query	MultiTermQuery.rewrite(IndexReader reader)	To rewrite to a simpler form, instead return a simpler enum from MultiTermQuery.getTermsEnum(Terms, AttributeSource).
abstract Query	MultiTermQuery.RewriteMethod.rewrite(IndexReader reader, MultiTermQuery query)
Query	NGramPhraseQuery.rewrite(IndexReader reader)
Query	PhraseQuery.rewrite(IndexReader reader)
Query	Query.rewrite(IndexReader reader)	Expert: called to re-write queries into primitive queries.
final Q	ScoringRewrite.rewrite(IndexReader reader, MultiTermQuery query)
final Q	TopTermsRewrite.rewrite(IndexReader reader, MultiTermQuery query)

Constructors in org.apache.lucene.search with parameters of type IndexReader

Modifier	Constructor	Description
	IndexSearcher(IndexReader r)	Creates a searcher searching the provided index.
	IndexSearcher(IndexReader r, ExecutorService executor)	Runs searches for each segment separately, using the provided ExecutorService.

Uses of IndexReader in org.apache.lucene.search.spans

Methods in org.apache.lucene.search.spans with parameters of type IndexReader

Modifier and Type	Method	Description
Query	FieldMaskingSpanQuery.rewrite(IndexReader reader)
Query	SpanMultiTermQueryWrapper.rewrite(IndexReader reader)
abstract SpanQuery	SpanMultiTermQueryWrapper.SpanRewriteMethod.rewrite(IndexReader reader, MultiTermQuery query)
SpanQuery	SpanMultiTermQueryWrapper.TopTermsSpanBooleanQueryRewrite.rewrite(IndexReader reader, MultiTermQuery query)
Query	SpanNearQuery.rewrite(IndexReader reader)
Query	SpanNotQuery.rewrite(IndexReader reader)
Query	SpanOrQuery.rewrite(IndexReader reader)
Query	SpanPositionCheckQuery.rewrite(IndexReader reader)