org.apache.lucene.util.packed

Class PagedMutable

java.lang.Object

org.apache.lucene.util.LongValues

org.apache.lucene.util.packed.AbstractPagedMutable<PagedMutable>

org.apache.lucene.util.packed.PagedMutable

All Implemented Interfaces:

Accountable

public final class PagedMutable
extends AbstractPagedMutable<PagedMutable>

A PagedMutable. This class slices data into fixed-size blocks which have the same number of bits per value. It can be a useful replacement for PackedInts.Mutable to store more than 2B values.

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Field Summary

Fields inherited from class org.apache.lucene.util.LongValues

IDENTITY, ZEROES

Constructor Summary

Constructors

Constructor and Description
PagedMutable(long size, int pageSize, int bitsPerValue, float acceptableOverheadRatio) Create a new PagedMutable instance.

Method Summary

Modifier and Type	Method and Description
protected long	baseRamBytesUsed()
protected PackedInts.Mutable	newMutable(int valueCount, int bitsPerValue)
protected PagedMutable	newUnfilledCopy(long newSize)

Methods inherited from class org.apache.lucene.util.packed.AbstractPagedMutable

fillPages, get, grow, grow, ramBytesUsed, resize, set, size, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.lucene.util.Accountable

getChildResources

Constructor Detail

PagedMutable

public PagedMutable(long size,
                    int pageSize,
                    int bitsPerValue,
                    float acceptableOverheadRatio)

Create a new PagedMutable instance.

Parameters:

size - the number of values to store.

pageSize - the number of values per page

bitsPerValue - the number of bits per value

acceptableOverheadRatio - an acceptable overhead ratio

Method Detail

newMutable

protected PackedInts.Mutable newMutable(int valueCount,
                                        int bitsPerValue)

Specified by:

newMutable in class AbstractPagedMutable<PagedMutable>

newUnfilledCopy

protected PagedMutable newUnfilledCopy(long newSize)

Specified by:

newUnfilledCopy in class AbstractPagedMutable<PagedMutable>

baseRamBytesUsed

protected long baseRamBytesUsed()

Overrides:

baseRamBytesUsed in class AbstractPagedMutable<PagedMutable>