Class SlowCompositeReaderWrapper

This class forces a composite reader (eg a MultiReader or DirectoryReader) to emulate an atomic reader. This requires implementing the postings APIs on-the-fly, using the static methods in MultiFields, MultiDocValues, by stepping through the sub-readers to merge fields/terms, appending docs, etc.

NOTE: This class almost always results in a performance hit. If this is important to your use case, you'll get better performance by gathering the sub readers using Context to get the atomic leaves and then operate per-AtomicReader, instead of using this class.

Inheritance
System.Object
IndexReader
AtomicReader
SlowCompositeReaderWrapper
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 sealed class SlowCompositeReaderWrapper : AtomicReader, IDisposable

Properties

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CombinedCoreAndDeletesKey

Declaration
public override object CombinedCoreAndDeletesKey { get; }
Property Value
Type Description
System.Object
Overrides
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CoreCacheKey

Declaration
public override object CoreCacheKey { get; }
Property Value
Type Description
System.Object
Overrides
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FieldInfos

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()
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Wrap(IndexReader)

This method is sugar for getting an AtomicReader from an IndexReader of any kind. If the reader is already atomic, it is returned unchanged, otherwise wrapped by this class.

Declaration
public static AtomicReader Wrap(IndexReader reader)
Parameters
Type Name Description
IndexReader reader
Returns
Type Description
AtomicReader

Implements

System.IDisposable