Class MemoryPostingsFormat

Stores terms & postings (docs, positions, payloads) in RAM, using an FST.

Note that this codec implements advance as a linear scan! This means if you store large fields in here, queries that rely on advance will (AND BooleanQuery, PhraseQuery) will be relatively slow!

Note

This API is experimental and might change in incompatible ways in the next release.

Inheritance

System.Object

Lucene.Net.Codecs.PostingsFormat

MemoryPostingsFormat

Inherited Members

Lucene.Net.Codecs.PostingsFormat.EMPTY

Lucene.Net.Codecs.PostingsFormat.SetPostingsFormatFactory(Lucene.Net.Codecs.IPostingsFormatFactory)

Lucene.Net.Codecs.PostingsFormat.GetPostingsFormatFactory()

Lucene.Net.Codecs.PostingsFormat.Name

Lucene.Net.Codecs.PostingsFormat.ForName(System.String)

Lucene.Net.Codecs.PostingsFormat.AvailablePostingsFormats

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

Namespace: Lucene.Net.Codecs.Memory

Assembly: Lucene.Net.Codecs.dll

Syntax

[PostingsFormatName("Memory")]
public sealed class MemoryPostingsFormat : PostingsFormat

Constructors

MemoryPostingsFormat()

Declaration

public MemoryPostingsFormat()

MemoryPostingsFormat(Boolean, Single)

Create MemoryPostingsFormat, specifying advanced FST options.

Declaration

public MemoryPostingsFormat(bool doPackFST, float acceptableOverheadRatio)

Parameters

Type	Name	Description
System.Boolean	doPackFST	true if a packed FST should be built. NOTE: packed FSTs are limited to ~2.1 GB of postings.
System.Single	acceptableOverheadRatio	Allowable overhead for packed System.Int32s during FST construction.

Methods

FieldsConsumer(SegmentWriteState)

Declaration

public override FieldsConsumer FieldsConsumer(SegmentWriteState state)

Parameters

Type	Name	Description
Lucene.Net.Index.SegmentWriteState	state

Returns

Type	Description
Lucene.Net.Codecs.FieldsConsumer

Overrides

Lucene.Net.Codecs.PostingsFormat.FieldsConsumer(Lucene.Net.Index.SegmentWriteState)

FieldsProducer(SegmentReadState)

Declaration

public override FieldsProducer FieldsProducer(SegmentReadState state)

Parameters

Type	Name	Description
Lucene.Net.Index.SegmentReadState	state

Returns

Type	Description
Lucene.Net.Codecs.FieldsProducer

Overrides

Lucene.Net.Codecs.PostingsFormat.FieldsProducer(Lucene.Net.Index.SegmentReadState)

ToString()

Declaration

public override string ToString()

Returns

Type	Description
System.String

Overrides

Lucene.Net.Codecs.PostingsFormat.ToString()