org.apache.lucene.index.memory

Class MemoryIndex.MemoryIndexReader

java.lang.Object

org.apache.lucene.index.IndexReader

org.apache.lucene.index.LeafReader

org.apache.lucene.index.memory.MemoryIndex.MemoryIndexReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Enclosing class:

MemoryIndex

private final class MemoryIndex.MemoryIndexReader
extends LeafReader

Search support for Lucene framework integration; implements all methods required by the Lucene IndexReader contracts.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	MemoryIndex.MemoryIndexReader.MemoryFields
private class	MemoryIndex.MemoryIndexReader.MemoryIndexPointValues
private class	MemoryIndex.MemoryIndexReader.MemoryPostingsEnum
private class	MemoryIndex.MemoryIndexReader.MemoryTermsEnum

Nested classes/interfaces inherited from class org.apache.lucene.index.LeafReader

LeafReader.CoreClosedListener

Nested classes/interfaces inherited from class org.apache.lucene.index.IndexReader

IndexReader.ReaderClosedListener

Field Summary

Fields

Modifier and Type	Field and Description
private PointValues	pointValues

Constructor Summary

Constructors

Modifier	Constructor and Description
private	MemoryIndexReader()

Method Summary

Modifier and Type	Method and Description
void	addCoreClosedListener(LeafReader.CoreClosedListener listener) Expert: adds a CoreClosedListener to this reader's shared core
void	checkIntegrity() Checks consistency of this reader.
protected void	doClose() Implements close.
void	document(int docID, StoredFieldVisitor visitor) Expert: visits the fields of a stored document, for custom processing/loading of each field.
Fields	fields() Returns Fields for this reader.
BinaryDocValues	getBinaryDocValues(java.lang.String field) Returns BinaryDocValues for this field, or null if no BinaryDocValues were indexed for this field.
Bits	getDocsWithField(java.lang.String field) Returns a Bits at the size of reader.maxDoc(), with turned on bits for each docid that does have a value for this field, or null if no DocValues were indexed for this field.
FieldInfos	getFieldInfos() Get the FieldInfos describing all fields in this reader.
private MemoryIndex.Info	getInfoForExpectedDocValuesType(java.lang.String fieldName, DocValuesType expectedType)
Bits	getLiveDocs() Returns the Bits representing live (not deleted) docs.
NumericDocValues	getNormValues(java.lang.String field) Returns NumericDocValues representing norms for this field, or null if no NumericDocValues were indexed.
NumericDocValues	getNumericDocValues(java.lang.String field) Returns NumericDocValues for this field, or null if no NumericDocValues were indexed for this field.
PointValues	getPointValues() Returns the PointValues used for numeric or spatial searches, or null if there are no point fields.
SortedDocValues	getSortedDocValues(java.lang.String field) Returns SortedDocValues for this field, or null if no SortedDocValues were indexed for this field.
private SortedDocValues	getSortedDocValues(java.lang.String field, DocValuesType docValuesType)
SortedNumericDocValues	getSortedNumericDocValues(java.lang.String field) Returns SortedNumericDocValues for this field, or null if no SortedNumericDocValues were indexed for this field.
SortedSetDocValues	getSortedSetDocValues(java.lang.String field) Returns SortedSetDocValues for this field, or null if no SortedSetDocValues were indexed for this field.
Fields	getTermVectors(int docID) Retrieve term vectors for this document, or null if term vectors were not indexed.
int	maxDoc() Returns one greater than the largest possible document number.
int	numDocs() Returns the number of documents in this index.
void	removeCoreClosedListener(LeafReader.CoreClosedListener listener) Expert: removes a CoreClosedListener from this reader's shared core

Methods inherited from class org.apache.lucene.index.LeafReader

addCoreClosedListenerAsReaderClosedListener, docFreq, getContext, getDocCount, getSumDocFreq, getSumTotalTermFreq, postings, postings, removeCoreClosedListenerAsReaderClosedListener, terms, totalTermFreq

Methods inherited from class org.apache.lucene.index.IndexReader

addReaderClosedListener, close, decRef, document, document, ensureOpen, equals, getCombinedCoreAndDeletesKey, getCoreCacheKey, getRefCount, getTermVector, hasDeletions, hashCode, incRef, leaves, numDeletedDocs, registerParentReader, removeReaderClosedListener, tryIncRef

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

pointValues

private final PointValues pointValues

Constructor Detail

MemoryIndexReader

private MemoryIndexReader()

Method Detail

addCoreClosedListener

public void addCoreClosedListener(LeafReader.CoreClosedListener listener)

Description copied from class: LeafReader

Expert: adds a CoreClosedListener to this reader's shared core

Specified by:

addCoreClosedListener in class LeafReader

removeCoreClosedListener

public void removeCoreClosedListener(LeafReader.CoreClosedListener listener)

Description copied from class: LeafReader

Expert: removes a CoreClosedListener from this reader's shared core

Specified by:

removeCoreClosedListener in class LeafReader

getInfoForExpectedDocValuesType

private MemoryIndex.Info getInfoForExpectedDocValuesType(java.lang.String fieldName,
                                                         DocValuesType expectedType)

getLiveDocs

public Bits getLiveDocs()

Description copied from class: LeafReader

Returns the Bits representing live (not deleted) docs. A set bit indicates the doc ID has not been deleted. If this method returns null it means there are no deleted documents (all documents are live). The returned instance has been safely published for use by multiple threads without additional synchronization.

Specified by:

getLiveDocs in class LeafReader

getFieldInfos

public FieldInfos getFieldInfos()

Description copied from class: LeafReader

Get the FieldInfos describing all fields in this reader.

Specified by:

getFieldInfos in class LeafReader

getNumericDocValues

public NumericDocValues getNumericDocValues(java.lang.String field)

Description copied from class: LeafReader

Returns NumericDocValues for this field, or null if no NumericDocValues were indexed for this field. The returned instance should only be used by a single thread.

Specified by:

getNumericDocValues in class LeafReader

getBinaryDocValues

public BinaryDocValues getBinaryDocValues(java.lang.String field)

Description copied from class: LeafReader

Returns BinaryDocValues for this field, or null if no BinaryDocValues were indexed for this field. The returned instance should only be used by a single thread.

Specified by:

getBinaryDocValues in class LeafReader

getSortedDocValues

public SortedDocValues getSortedDocValues(java.lang.String field)

Description copied from class: LeafReader

Returns SortedDocValues for this field, or null if no SortedDocValues were indexed for this field. The returned instance should only be used by a single thread.

Specified by:

getSortedDocValues in class LeafReader

getSortedDocValues

private SortedDocValues getSortedDocValues(java.lang.String field,
                                           DocValuesType docValuesType)

getSortedNumericDocValues

public SortedNumericDocValues getSortedNumericDocValues(java.lang.String field)

Description copied from class: LeafReader

Returns SortedNumericDocValues for this field, or null if no SortedNumericDocValues were indexed for this field. The returned instance should only be used by a single thread.

Specified by:

getSortedNumericDocValues in class LeafReader

getSortedSetDocValues

public SortedSetDocValues getSortedSetDocValues(java.lang.String field)

Description copied from class: LeafReader

Returns SortedSetDocValues for this field, or null if no SortedSetDocValues were indexed for this field. The returned instance should only be used by a single thread.

Specified by:

getSortedSetDocValues in class LeafReader

getDocsWithField

public Bits getDocsWithField(java.lang.String field)
                      throws java.io.IOException

Description copied from class: LeafReader

Returns a Bits at the size of reader.maxDoc(), with turned on bits for each docid that does have a value for this field, or null if no DocValues were indexed for this field. The returned instance should only be used by a single thread

Specified by:

getDocsWithField in class LeafReader

Throws:

java.io.IOException

getPointValues

public PointValues getPointValues()

Description copied from class: LeafReader

Returns the PointValues used for numeric or spatial searches, or null if there are no point fields.

Specified by:

getPointValues in class LeafReader

checkIntegrity

public void checkIntegrity()
                    throws java.io.IOException

Description copied from class: LeafReader

Checks consistency of this reader.

Note that this may be costly in terms of I/O, e.g. may involve computing a checksum value against large data files.

Specified by:

checkIntegrity in class LeafReader

Throws:

java.io.IOException

fields

public Fields fields()

Description copied from class: LeafReader

Returns Fields for this reader. This method will not return null.

Specified by:

fields in class LeafReader

getTermVectors

public Fields getTermVectors(int docID)

Description copied from class: IndexReader

Retrieve term vectors for this document, or null if term vectors were not indexed. The returned Fields instance acts like a single-document inverted index (the docID will be 0).

Specified by:

getTermVectors in class IndexReader

numDocs

public int numDocs()

Description copied from class: IndexReader

Returns the number of documents in this index.

Specified by:

numDocs in class IndexReader

maxDoc

public int maxDoc()

Description copied from class: IndexReader

Returns one greater than the largest possible document number. This may be used to, e.g., determine how big to allocate an array which will have an element for every document number in an index.

Specified by:

maxDoc in class IndexReader

document

public void document(int docID,
                     StoredFieldVisitor visitor)

Description copied from class: IndexReader

Expert: visits the fields of a stored document, for custom processing/loading of each field. If you simply want to load all fields, use IndexReader.document(int). If you want to load a subset, use DocumentStoredFieldVisitor.

Specified by:

document in class IndexReader

doClose

protected void doClose()

Description copied from class: IndexReader

Implements close.

Specified by:

doClose in class IndexReader

getNormValues

public NumericDocValues getNormValues(java.lang.String field)

Description copied from class: LeafReader

Returns NumericDocValues representing norms for this field, or null if no NumericDocValues were indexed. The returned instance should only be used by a single thread.

Specified by:

getNormValues in class LeafReader