Package org.apache.lucene.util.packed

Class PackedInts.NullReader

java.lang.Object

org.apache.lucene.index.NumericDocValues

org.apache.lucene.util.packed.PackedInts.Reader

org.apache.lucene.util.packed.PackedInts.NullReader

Enclosing class:

PackedInts

public static final class PackedInts.NullReader
extends PackedInts.Reader

A PackedInts.Reader which has all its values equal to 0 (bitsPerValue = 0).

Field Summary

Fields inherited from class org.apache.lucene.index.NumericDocValues

EMPTY

Constructor Summary

Constructors

Constructor	Description
NullReader(int valueCount)	Sole constructor.

Method Summary

Modifier and Type	Method	Description
long	get(int index)	Returns the numeric value for the specified document ID.
int	get(int index, long[] arr, int off, int len)	Bulk get: read at least one and at most len longs starting from index into arr[off:off+len] and return the actual number of values that have been read.
int	getBitsPerValue()
long	ramBytesUsed()	Return the in-memory size in bytes.
int	size()

Methods inherited from class org.apache.lucene.util.packed.PackedInts.Reader

getArray, hasArray

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NullReader

public NullReader(int valueCount)

Sole constructor.

Method Detail

get

public long get(int index)

Description copied from class: NumericDocValues

Returns the numeric value for the specified document ID.

Specified by:

get in class NumericDocValues

Parameters:

index - document ID to lookup

Returns:

numeric value

get

public int get(int index,
               long[] arr,
               int off,
               int len)

Description copied from class: PackedInts.Reader

Bulk get: read at least one and at most len longs starting from index into arr[off:off+len] and return the actual number of values that have been read.

Overrides:

get in class PackedInts.Reader

getBitsPerValue

public int getBitsPerValue()

Specified by:

getBitsPerValue in class PackedInts.Reader

Returns:

the number of bits used to store any given value. Note: This does not imply that memory usage is bitsPerValue * #values as implementations are free to use non-space-optimal packing of bits.

size

public int size()

Specified by:

size in class PackedInts.Reader

Returns:

the number of values.

ramBytesUsed

public long ramBytesUsed()

Description copied from class: PackedInts.Reader

Return the in-memory size in bytes.

Specified by:

ramBytesUsed in class PackedInts.Reader