Class DirectDocValuesFormat

In-memory docvalues format that does no (or very little) compression. Indexed values are stored on disk, but then at search time all values are loaded into memory as simple .NET arrays. For numeric values, it uses byte[], short[], int[], long[] as necessary to fit the range of the values. For binary values, there is an System.Int32 (4 bytes) overhead per value.

Limitations:

• For binary and sorted fields the total space required for all binary values cannot exceed about 2.1 GB (see MAX_TOTAL_BYTES_LENGTH).
• For sorted set fields, the sum of the size of each document's set of values cannot exceed about 2.1 B values (see MAX_SORTED_SET_ORDS). For example, if every document has 10 values (10 instances of Lucene.Net.Documents.SortedSetDocValuesField) added, then no more than ~210 M documents can be added to one segment.

Inheritance

System.Object

Lucene.Net.Codecs.DocValuesFormat

DirectDocValuesFormat

Inherited Members

Lucene.Net.Codecs.DocValuesFormat.SetDocValuesFormatFactory(Lucene.Net.Codecs.IDocValuesFormatFactory)

Lucene.Net.Codecs.DocValuesFormat.GetDocValuesFormatFactory()

Lucene.Net.Codecs.DocValuesFormat.Name

Lucene.Net.Codecs.DocValuesFormat.ToString()

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

Lucene.Net.Codecs.DocValuesFormat.AvailableDocValuesFormats

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

[DocValuesFormatName("Direct")]
public class DirectDocValuesFormat : DocValuesFormat

Constructors

DirectDocValuesFormat()

Sole constructor.

Declaration

public DirectDocValuesFormat()

Fields

MAX_SORTED_SET_ORDS

The sum of the number of values across all documents in a sorted set field cannot exceed this.

Declaration

public static readonly int MAX_SORTED_SET_ORDS

Field Value

Type	Description
System.Int32

MAX_TOTAL_BYTES_LENGTH

The sum of all byte lengths for binary field, or for the unique values in sorted or sorted set fields, cannot exceed this.

Declaration

public static readonly int MAX_TOTAL_BYTES_LENGTH

Field Value

Type	Description
System.Int32

Methods

FieldsConsumer(SegmentWriteState)

Declaration

public override DocValuesConsumer FieldsConsumer(SegmentWriteState state)

Parameters

Type	Name	Description
Lucene.Net.Index.SegmentWriteState	state

Returns

Type	Description
Lucene.Net.Codecs.DocValuesConsumer

Overrides

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

FieldsProducer(SegmentReadState)

Declaration

public override DocValuesProducer FieldsProducer(SegmentReadState state)

Parameters

Type	Name	Description
Lucene.Net.Index.SegmentReadState	state

Returns

Type	Description
Lucene.Net.Codecs.DocValuesProducer

Overrides

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