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!

@lucene.experimental

Inheritance
System.Object
PostingsFormat
MemoryPostingsFormat
Inherited Members
Namespace: Lucene.Net.Codecs.Memory
Assembly: Lucene.Net.Codecs.dll
Syntax
public sealed class MemoryPostingsFormat : PostingsFormat

Constructors

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MemoryPostingsFormat()

Declaration
public MemoryPostingsFormat()
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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 s during FST construction.

Methods

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FieldsConsumer(SegmentWriteState)

Declaration
public override FieldsConsumer FieldsConsumer(SegmentWriteState state)
Parameters
Type Name Description
SegmentWriteState state
Returns
Type Description
FieldsConsumer
Overrides
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FieldsProducer(SegmentReadState)

Declaration
public override FieldsProducer FieldsProducer(SegmentReadState state)
Parameters
Type Name Description
SegmentReadState state
Returns
Type Description
FieldsProducer
Overrides
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ToString()

Declaration
public override string ToString()
Returns
Type Description
System.String
Overrides