org.apache.lucene.codecs.uniformsplit

Class DictionaryBrowserSupplier

java.lang.Object

org.apache.lucene.codecs.uniformsplit.DictionaryBrowserSupplier

All Implemented Interfaces:

java.util.function.Supplier<IndexDictionary.Browser>, Accountable

public class DictionaryBrowserSupplier
extends java.lang.Object
implements java.util.function.Supplier<IndexDictionary.Browser>, Accountable

Supplier for a new stateful IndexDictionary.Browser created on the immutable IndexDictionary.

The immutable IndexDictionary is lazy loaded thread safely. This lazy loading allows us to load it only when TermsEnum.seekCeil(org.apache.lucene.util.BytesRef) or TermsEnum.seekExact(org.apache.lucene.util.BytesRef) are called (it is not loaded for a direct all-terms enumeration).

Field Summary

Fields

Modifier and Type	Field and Description
protected BlockDecoder	blockDecoder
protected IndexDictionary	dictionary Lazy loaded immutable index dictionary (trie hold in RAM).
protected IndexInput	dictionaryInput

Constructor Summary

Constructors

Constructor and Description
DictionaryBrowserSupplier(IndexInput dictionaryInput, long startFilePointer, BlockDecoder blockDecoder)

Method Summary

Modifier and Type	Method and Description
IndexDictionary.Browser	get() Gets or lazy loads the immutable IndexDictionary thread safely and creates a new IndexDictionary.Browser.
long	ramBytesUsed() Return the memory usage of this object in bytes.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.lucene.util.Accountable

getChildResources

Field Detail

dictionaryInput

protected final IndexInput dictionaryInput

blockDecoder

protected final BlockDecoder blockDecoder

dictionary

protected IndexDictionary dictionary

Lazy loaded immutable index dictionary (trie hold in RAM).

Constructor Detail

DictionaryBrowserSupplier

public DictionaryBrowserSupplier(IndexInput dictionaryInput,
                                 long startFilePointer,
                                 BlockDecoder blockDecoder)
                          throws java.io.IOException

Throws:

java.io.IOException

Method Detail

get

public IndexDictionary.Browser get()

Gets or lazy loads the immutable IndexDictionary thread safely and creates a new IndexDictionary.Browser.

Specified by:

get in interface java.util.function.Supplier<IndexDictionary.Browser>

ramBytesUsed

public long ramBytesUsed()

Description copied from interface: Accountable

Return the memory usage of this object in bytes. Negative values are illegal.

Specified by:

ramBytesUsed in interface Accountable