Class Lucene42NormsFormat

Lucene 4.2 score normalization format.

NOTE: this uses the same format as Lucene42DocValuesFormat Numeric DocValues, but with different file extensions, and passing FASTEST for uncompressed encoding: trading off space for performance.

Files:
  • .nvd: DocValues data
  • .nvm: DocValues metadata
Inheritance
object
NormsFormat
Lucene42NormsFormat
Inherited Members
Namespace: Lucene.Net.Codecs.Lucene42
Assembly: Lucene.Net.dll
Syntax
public class Lucene42NormsFormat : NormsFormat

Constructors

Lucene42NormsFormat()

Calls Lucene42DocValuesFormat(PackedInt32s.FASTEST) (Lucene42NormsFormat(float)).

Declaration
public Lucene42NormsFormat()
See Also

Lucene42NormsFormat(float)

Creates a new Lucene42DocValuesFormat with the specified acceptableOverheadRatio for NumericDocValues.

Note

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

Declaration
public Lucene42NormsFormat(float acceptableOverheadRatio)
Parameters
Type Name Description
float acceptableOverheadRatio

Compression parameter for numerics. Currently this is only used when the number of unique values is small.
See Also

Methods

NormsConsumer(SegmentWriteState)

Returns a DocValuesConsumer to write norms to the index.

Declaration
public override DocValuesConsumer NormsConsumer(SegmentWriteState state)
Parameters
Type Name Description
SegmentWriteState state
Returns
Type Description
DocValuesConsumer
Overrides
See Also

NormsProducer(SegmentReadState)

Returns a DocValuesProducer to read norms from the index.

NOTE: by the time this call returns, it must hold open any files it will need to use; else, those files may be deleted. Additionally, required files may be deleted during the execution of this call before there is a chance to open them. Under these circumstances an IOException should be thrown by the implementation. IOException are expected and will automatically cause a retry of the segment opening logic with the newly revised segments.
Declaration
public override DocValuesProducer NormsProducer(SegmentReadState state)
Parameters
Type Name Description
SegmentReadState state
Returns
Type Description
DocValuesProducer
Overrides
See Also

See Also