Class PackedInt32s.Format

A format to write packed System.Int32s.

This is a Lucene.NET INTERNAL API, use at your own risk
Inheritance
System.Object
PackedInt32s.Format
Inherited Members
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)
System.Object.ToString()
Namespace: Lucene.Net.Util.Packed
Assembly: Lucene.Net.dll
Syntax
public class Format

Fields

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PACKED

Compact format, all bits are written contiguously.

Declaration
public static readonly PackedInt32s.Format PACKED
Field Value
Type Description
PackedInt32s.Format
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PACKED_SINGLE_BLOCK

A format that may insert padding bits to improve encoding and decoding speed. Since this format doesn't support all possible bits per value, you should never use it directly, but rather use FastestFormatAndBits(Int32, Int32, Single) to find the format that best suits your needs.

Declaration
public static readonly PackedInt32s.Format PACKED_SINGLE_BLOCK
Field Value
Type Description
PackedInt32s.Format

Properties

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Id

Returns the ID of the format.

Declaration
public int Id { get; }
Property Value
Type Description
System.Int32
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Values

Declaration
public static IEnumerable<PackedInt32s.Format> Values { get; }
Property Value
Type Description
System.Collections.Generic.IEnumerable<PackedInt32s.Format>

Methods

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ById(Int32)

Get a format according to its ID.

Declaration
public static PackedInt32s.Format ById(int id)
Parameters
Type Name Description
System.Int32 id
Returns
Type Description
PackedInt32s.Format
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ByteCount(Int32, Int32, Int32)

Computes how many System.Byte blocks are needed to store valueCount values of size bitsPerValue.

Declaration
public virtual long ByteCount(int packedIntsVersion, int valueCount, int bitsPerValue)
Parameters
Type Name Description
System.Int32 packedIntsVersion
System.Int32 valueCount
System.Int32 bitsPerValue
Returns
Type Description
System.Int64
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Int64Count(Int32, Int32, Int32)

Computes how many System.Int64 blocks are needed to store valueCount values of size bitsPerValue.

NOTE: This was longCount() in Lucene.

Declaration
public virtual int Int64Count(int packedIntsVersion, int valueCount, int bitsPerValue)
Parameters
Type Name Description
System.Int32 packedIntsVersion
System.Int32 valueCount
System.Int32 bitsPerValue
Returns
Type Description
System.Int32
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IsSupported(Int32)

Tests whether the provided number of bits per value is supported by the format.

Declaration
public virtual bool IsSupported(int bitsPerValue)
Parameters
Type Name Description
System.Int32 bitsPerValue
Returns
Type Description
System.Boolean
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OverheadPerValue(Int32)

Returns the overhead per value, in bits.

Declaration
public virtual float OverheadPerValue(int bitsPerValue)
Parameters
Type Name Description
System.Int32 bitsPerValue
Returns
Type Description
System.Single
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OverheadRatio(Int32)

Returns the overhead ratio (overhead per value / bits per value).

Declaration
public virtual float OverheadRatio(int bitsPerValue)
Parameters
Type Name Description
System.Int32 bitsPerValue
Returns
Type Description
System.Single

Extension Methods