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!

This is a Lucene.NET EXPERIMENTAL API, use at your own risk

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

PostingsFormat.ForName(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()