C# 클래스 Lucene.Net.Facet.Taxonomy.Directory.DirectoryTaxonomyReader

A TaxonomyReader which retrieves stored taxonomy information from a Directory.

Reading from the on-disk index on every method call is too slow, so this implementation employs caching: Some methods cache recent requests and their results, while other methods prefetch all the data into memory and then provide answers directly from in-memory tables. See the documentation of individual methods for comments on their performance. @lucene.experimental

상속: TaxonomyReader, IDisposable

파일 보기 프로젝트 열기: apache/lucenenet 1 사용 예제들

Private Properties

프로퍼티	타입	설명
DirectoryTaxonomyReader	System
InitTaxoArrays	void

공개 메소드들

메소드	설명
DirectoryTaxonomyReader ( Directory directory ) : System	Open for reading a taxonomy stored in a given Directory.
DirectoryTaxonomyReader ( DirectoryTaxonomyWriter taxoWriter ) : System	Opens a DirectoryTaxonomyReader over the given DirectoryTaxonomyWriter (for NRT).
Dispose ( ) : void
GetOrdinal ( FacetLabel cp ) : int
GetPath ( int ordinal ) : FacetLabel
ToString ( int max ) : string	Returns ordinal -> label mapping, up to the provided max ordinal or number of ordinals, whichever is smaller.

보호된 메소드들

메소드	설명
DoClose ( ) : void
DoOpenIfChanged ( ) : TaxonomyReader	Implements the opening of a new DirectoryTaxonomyReader instance if the taxonomy has changed. NOTE: the returned DirectoryTaxonomyReader shares the ordinal and category caches with this reader. This is not expected to cause any issues, unless the two instances continue to live. The reader guarantees that the two instances cannot affect each other in terms of correctness of the caches, however if the size of the cache is changed through CacheSize, it will affect both reader instances.
OpenIndexReader ( Directory directory ) : DirectoryReader	Open the DirectoryReader from this Directory.
OpenIndexReader ( IndexWriter writer ) : DirectoryReader	Open the DirectoryReader from this IndexWriter.

비공개 메소드들

메소드	설명
DirectoryTaxonomyReader ( DirectoryReader indexReader, DirectoryTaxonomyWriter taxoWriter, IntClass>.LRUHashMap ordinalCache, FacetLabel>.LRUHashMap categoryCache, TaxonomyIndexArrays taxoArrays ) : System	Called only from DoOpenIfChanged(). If the taxonomy has been recreated, you should pass `null` as the caches and parent/children arrays.
InitTaxoArrays ( ) : void

메소드 상세

DirectoryTaxonomyReader() 공개 메소드

Open for reading a taxonomy stored in a given Directory.

if the Taxonomy is corrupt. if another error occurred.

public DirectoryTaxonomyReader ( Directory directory ) : System
directory	System.IO.Directory	The in which the taxonomy resides.
리턴	System

DirectoryTaxonomyReader() 공개 메소드

Opens a DirectoryTaxonomyReader over the given DirectoryTaxonomyWriter (for NRT).

public DirectoryTaxonomyReader ( DirectoryTaxonomyWriter taxoWriter ) : System
taxoWriter	DirectoryTaxonomyWriter	/// The from which to obtain newly /// added categories, in real-time.
리턴	System

Dispose() 공개 메소드

public Dispose ( ) : void
리턴	void

DoClose() 보호된 메소드

protected DoClose ( ) : void
리턴	void

DoOpenIfChanged() 보호된 메소드

Implements the opening of a new DirectoryTaxonomyReader instance if the taxonomy has changed.

NOTE: the returned DirectoryTaxonomyReader shares the ordinal and category caches with this reader. This is not expected to cause any issues, unless the two instances continue to live. The reader guarantees that the two instances cannot affect each other in terms of correctness of the caches, however if the size of the cache is changed through CacheSize, it will affect both reader instances.

protected DoOpenIfChanged ( ) : TaxonomyReader
리턴	TaxonomyReader

GetOrdinal() 공개 메소드

public GetOrdinal ( FacetLabel cp ) : int
cp	FacetLabel
리턴	int

GetPath() 공개 메소드

public GetPath ( int ordinal ) : FacetLabel
ordinal	int
리턴	FacetLabel

OpenIndexReader() 보호된 메소드

Open the DirectoryReader from this Directory.

protected OpenIndexReader ( Directory directory ) : DirectoryReader
directory	System.IO.Directory
리턴	DirectoryReader

OpenIndexReader() 보호된 메소드

Open the DirectoryReader from this IndexWriter.

protected OpenIndexReader ( IndexWriter writer ) : DirectoryReader
writer	IndexWriter
리턴	DirectoryReader

ToString() 공개 메소드

Returns ordinal -> label mapping, up to the provided max ordinal or number of ordinals, whichever is smaller.

public ToString ( int max ) : string
max	int
리턴	string