Package org.apache.lucene.backward_codecs.packed

Class LegacyDirectMonotonicReader

java.lang.Object

org.apache.lucene.util.LongValues

org.apache.lucene.backward_codecs.packed.LegacyDirectMonotonicReader

All Implemented Interfaces:

Accountable

public final class LegacyDirectMonotonicReader
extends LongValues
implements Accountable

Retrieves an instance previously written by LegacyDirectMonotonicWriter.

See Also:

LegacyDirectMonotonicWriter

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LegacyDirectMonotonicReader.Meta	In-memory metadata that needs to be kept around for LegacyDirectMonotonicReader to read data from disk.

Field Summary

Fields

Modifier and Type	Field	Description
private float[]	avgs
private static long	BASE_RAM_BYTES_USED
private int	blockShift
private byte[]	bpvs
private long[]	mins
private int	nonZeroBpvs
private LongValues[]	readers

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

IDENTITY, ZEROES

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

NULL_ACCOUNTABLE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	LegacyDirectMonotonicReader(int blockShift, LongValues[] readers, long[] mins, float[] avgs, byte[] bpvs)

Method Summary

Modifier and Type	Method	Description
long	binarySearch(long fromIndex, long toIndex, long key)	Return the index of a key if it exists, or its insertion point otherwise like Arrays.binarySearch(long[], int, int, long).
long	get(long index)	Get value at index.
private long[]	getBounds(long index)	Get lower/upper bounds for the value at a given index without hitting the direct reader.
static LegacyDirectMonotonicReader	getInstance(LegacyDirectMonotonicReader.Meta meta, RandomAccessInput data)	Retrieves an instance from the specified slice.
static LegacyDirectMonotonicReader.Meta	loadMeta(IndexInput metaIn, long numValues, int blockShift)	Load metadata from the given IndexInput.
long	ramBytesUsed()	Return the memory usage of this object in bytes.

Methods inherited from class java.lang.Object

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

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

getChildResources

Field Detail

BASE_RAM_BYTES_USED

private static final long BASE_RAM_BYTES_USED

blockShift

private final int blockShift

readers

private final LongValues[] readers

mins

private final long[] mins

avgs

private final float[] avgs

bpvs

private final byte[] bpvs

nonZeroBpvs

private final int nonZeroBpvs

Constructor Detail

LegacyDirectMonotonicReader

private LegacyDirectMonotonicReader(int blockShift,
                                    LongValues[] readers,
                                    long[] mins,
                                    float[] avgs,
                                    byte[] bpvs)

Method Detail

loadMeta

public static LegacyDirectMonotonicReader.Meta loadMeta(IndexInput metaIn,
                                                        long numValues,
                                                        int blockShift)
                                                 throws java.io.IOException

Load metadata from the given IndexInput.

Throws:

java.io.IOException

See Also:

getInstance(Meta, RandomAccessInput)

getInstance

public static LegacyDirectMonotonicReader getInstance(LegacyDirectMonotonicReader.Meta meta,
                                                      RandomAccessInput data)
                                               throws java.io.IOException

Retrieves an instance from the specified slice.

Throws:

java.io.IOException

get

public long get(long index)

Description copied from class: LongValues

Get value at index.

Specified by:

get in class LongValues

getBounds

private long[] getBounds(long index)

Get lower/upper bounds for the value at a given index without hitting the direct reader.

binarySearch

public long binarySearch(long fromIndex,
                         long toIndex,
                         long key)

Return the index of a key if it exists, or its insertion point otherwise like Arrays.binarySearch(long[], int, int, long).

See Also:

Arrays.binarySearch(long[], int, int, long)

ramBytesUsed

public long ramBytesUsed()

Description copied from interface: Accountable

Return the memory usage of this object in bytes. Negative values are illegal.

Specified by:

ramBytesUsed in interface Accountable