Class ParallelAtomicReader

An AtomicReader which reads multiple, parallel indexes. Each index added must have the same number of documents, but typically each contains different fields. Deletions are taken from the first reader. Each document contains the union of the fields of all documents with the same document number. When searching, matches for a query term are from the first index added that has the field.

This is useful, e.g., with collections that have large fields which change rarely and small fields that change more frequently. The smaller fields may be re-indexed in a new index and both indexes may be searched together.

Warning: It is up to you to make sure all indexes are created and modified the same way. For example, if you add documents to one index, you need to add the same documents in the same order to the other indexes. Failure to do so will result in undefined behavior.

Inheritance
System.Object
IndexReader
AtomicReader
ParallelAtomicReader
Implements
System.IDisposable
Inherited Members
System.Object.Equals(System.Object, System.Object)
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: Lucene.Net.Index
Assembly: Lucene.Net.dll
Syntax
public class ParallelAtomicReader : AtomicReader, IDisposable

Constructors

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ParallelAtomicReader(AtomicReader[])

Create a ParallelAtomicReader based on the provided readers; auto-disposes the given readers on Dispose().

Declaration
public ParallelAtomicReader(params AtomicReader[] readers)
Parameters
Type Name Description
AtomicReader[] readers
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ParallelAtomicReader(Boolean, AtomicReader[])

Create a ParallelAtomicReader based on the provided readers.

Declaration
public ParallelAtomicReader(bool closeSubReaders, params AtomicReader[] readers)
Parameters
Type Name Description
System.Boolean closeSubReaders
AtomicReader[] readers
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ParallelAtomicReader(Boolean, AtomicReader[], AtomicReader[])

Expert: create a ParallelAtomicReader based on the provided readers and storedFieldsReaders; when a document is loaded, only storedFieldsReaders will be used.

Declaration
public ParallelAtomicReader(bool closeSubReaders, AtomicReader[] readers, AtomicReader[] storedFieldsReaders)
Parameters
Type Name Description
System.Boolean closeSubReaders
AtomicReader[] readers
AtomicReader[] storedFieldsReaders

Properties

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FieldInfos

Get the FieldInfos describing all fields in this reader.

NOTE: the returned field numbers will likely not correspond to the actual field numbers in the underlying readers, and codec metadata (GetAttribute(String) will be unavailable.

Declaration
public override FieldInfos FieldInfos { get; }
Property Value
Type Description
FieldInfos
Overrides
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Fields

Declaration
public override Fields Fields { get; }
Property Value
Type Description
Fields
Overrides
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LiveDocs

Declaration
public override IBits LiveDocs { get; }
Property Value
Type Description
IBits
Overrides
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MaxDoc

Declaration
public override int MaxDoc { get; }
Property Value
Type Description
System.Int32
Overrides
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NumDocs

Declaration
public override int NumDocs { get; }
Property Value
Type Description
System.Int32
Overrides

Methods

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CheckIntegrity()

Declaration
public override void CheckIntegrity()
Overrides
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DoClose()

Declaration
protected override void DoClose()
Overrides
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Document(Int32, StoredFieldVisitor)

Declaration
public override void Document(int docID, StoredFieldVisitor visitor)
Parameters
Type Name Description
System.Int32 docID
StoredFieldVisitor visitor
Overrides
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GetBinaryDocValues(String)

Declaration
public override BinaryDocValues GetBinaryDocValues(string field)
Parameters
Type Name Description
System.String field
Returns
Type Description
BinaryDocValues
Overrides
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GetDocsWithField(String)

Declaration
public override IBits GetDocsWithField(string field)
Parameters
Type Name Description
System.String field
Returns
Type Description
IBits
Overrides
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GetNormValues(String)

Declaration
public override NumericDocValues GetNormValues(string field)
Parameters
Type Name Description
System.String field
Returns
Type Description
NumericDocValues
Overrides
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GetNumericDocValues(String)

Declaration
public override NumericDocValues GetNumericDocValues(string field)
Parameters
Type Name Description
System.String field
Returns
Type Description
NumericDocValues
Overrides
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GetSortedDocValues(String)

Declaration
public override SortedDocValues GetSortedDocValues(string field)
Parameters
Type Name Description
System.String field
Returns
Type Description
SortedDocValues
Overrides
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GetSortedSetDocValues(String)

Declaration
public override SortedSetDocValues GetSortedSetDocValues(string field)
Parameters
Type Name Description
System.String field
Returns
Type Description
SortedSetDocValues
Overrides
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GetTermVectors(Int32)

Declaration
public override Fields GetTermVectors(int docID)
Parameters
Type Name Description
System.Int32 docID
Returns
Type Description
Fields
Overrides
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ToString()

Declaration
public override string ToString()
Returns
Type Description
System.String
Overrides
System.Object.ToString()

Implements

System.IDisposable

Extension Methods