Class BaseCompositeReader<R>

Base class for implementing CompositeReaders based on an array of sub-readers. The implementing class has to add code for correctly refcounting and closing the sub-readers.

User code will most likely use MultiReader to build a composite reader on a set of sub-readers (like several DirectoryReaders).

For efficiency, in this API documents are often referred to via document numbers, non-negative integers which each name a unique document in the index. These document numbers are ephemeral -- they may change as documents are added to and deleted from an index. Clients should thus not rely on a given document having the same number between sessions.

NOTE: IndexReader instances are completely thread safe, meaning multiple threads can call any of its methods, concurrently. If your application requires external synchronization, you should not synchronize on the IndexReader instance; use your own (non-Lucene) objects instead.

Note

This API is for internal purposes only and might change in incompatible ways in the next release.

Inheritance
System.Object
IndexReader
CompositeReader
BaseCompositeReader<R>
DirectoryReader
MultiReader
ParallelCompositeReader
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 abstract class BaseCompositeReader<R> : CompositeReader, IDisposable where R : IndexReader
Type Parameters
Name Description
R

Constructors

| Improve this Doc View Source

BaseCompositeReader(R[])

Constructs a BaseCompositeReader<R> on the given subReaders.

Declaration
protected BaseCompositeReader(R[] subReaders)
Parameters
Type Name Description
R[] subReaders

the wrapped sub-readers. This array is returned by GetSequentialSubReaders() and used to resolve the correct subreader for docID-based methods. Please note: this array is not cloned and not protected for modification, the subclass is responsible to do this.

Properties

| Improve this Doc View Source

MaxDoc

Declaration
public sealed override int MaxDoc { get; }
Property Value
Type Description
System.Int32
Overrides
| Improve this Doc View Source

NumDocs

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

Methods

| Improve this Doc View Source

DocFreq(Term)

Declaration
public sealed override int DocFreq(Term term)
Parameters
Type Name Description
Term term
Returns
Type Description
System.Int32
Overrides
| Improve this Doc View Source

Document(Int32, StoredFieldVisitor)

Declaration
public sealed override void Document(int docID, StoredFieldVisitor visitor)
Parameters
Type Name Description
System.Int32 docID
StoredFieldVisitor visitor
Overrides
| Improve this Doc View Source

GetDocCount(String)

Declaration
public sealed override int GetDocCount(string field)
Parameters
Type Name Description
System.String field
Returns
Type Description
System.Int32
Overrides
| Improve this Doc View Source

GetSequentialSubReaders()

Declaration
protected sealed override IList<IndexReader> GetSequentialSubReaders()
Returns
Type Description
System.Collections.Generic.IList<IndexReader>
Overrides
| Improve this Doc View Source

GetSumDocFreq(String)

Declaration
public sealed override long GetSumDocFreq(string field)
Parameters
Type Name Description
System.String field
Returns
Type Description
System.Int64
Overrides
| Improve this Doc View Source

GetSumTotalTermFreq(String)

Declaration
public sealed override long GetSumTotalTermFreq(string field)
Parameters
Type Name Description
System.String field
Returns
Type Description
System.Int64
Overrides
| Improve this Doc View Source

GetTermVectors(Int32)

Declaration
public sealed override Fields GetTermVectors(int docID)
Parameters
Type Name Description
System.Int32 docID
Returns
Type Description
Fields
Overrides
| Improve this Doc View Source

ReaderBase(Int32)

Helper method for subclasses to get the docBase of the given sub-reader index.

Declaration
protected int ReaderBase(int readerIndex)
Parameters
Type Name Description
System.Int32 readerIndex
Returns
Type Description
System.Int32
| Improve this Doc View Source

ReaderIndex(Int32)

Helper method for subclasses to get the corresponding reader for a doc ID

Declaration
protected int ReaderIndex(int docID)
Parameters
Type Name Description
System.Int32 docID
Returns
Type Description
System.Int32
| Improve this Doc View Source

TotalTermFreq(Term)

Declaration
public sealed override long TotalTermFreq(Term term)
Parameters
Type Name Description
Term term
Returns
Type Description
System.Int64
Overrides

Implements

System.IDisposable

See Also