Package org.apache.lucene.util.bkd

Class HeapPointWriter

java.lang.Object

org.apache.lucene.util.bkd.HeapPointWriter

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, PointWriter

public final class HeapPointWriter
extends java.lang.Object
implements PointWriter

Utility class to write new points into in-heap arrays.

Field Summary

Fields

Modifier and Type	Field	Description
byte[]	block
private boolean	closed
(package private) BKDConfig	config
private int	nextWrite
private HeapPointReader.HeapPointValue	pointValue
private byte[]	scratch
(package private) int	size

Constructor Summary

Constructors

Constructor	Description
HeapPointWriter(BKDConfig config, int size)

Method Summary

Modifier and Type	Method	Description
void	append(byte[] packedValue, int docID)	Add a new point from the packed value and docId
void	append(PointValue pointValue)	Add a new point from a PointValue
void	close()
int	computeCardinality(int from, int to, int[] commonPrefixLengths)
long	count()	Return the number of points in this writer
void	destroy()	Removes any temp files behind this writer
PointValue	getPackedValueSlice(int index)	Returns a reference, in result, to the byte[] slice holding this value
PointReader	getReader(long start, long length)	Returns a PointReader iterator to step through all previously added points
void	swap(int i, int j)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

block

public final byte[] block

size

final int size

config

final BKDConfig config

scratch

private final byte[] scratch

nextWrite

private int nextWrite

closed

private boolean closed

pointValue

private HeapPointReader.HeapPointValue pointValue

Constructor Detail

HeapPointWriter

public HeapPointWriter(BKDConfig config,
                       int size)

Method Detail

getPackedValueSlice

public PointValue getPackedValueSlice(int index)

Returns a reference, in result, to the byte[] slice holding this value

append

public void append(byte[] packedValue,
                   int docID)

Description copied from interface: PointWriter

Add a new point from the packed value and docId

Specified by:

append in interface PointWriter

append

public void append(PointValue pointValue)

Description copied from interface: PointWriter

Add a new point from a PointValue

Specified by:

append in interface PointWriter

swap

public void swap(int i,
                 int j)

computeCardinality

public int computeCardinality(int from,
                              int to,
                              int[] commonPrefixLengths)

count

public long count()

Description copied from interface: PointWriter

Return the number of points in this writer

Specified by:

count in interface PointWriter

getReader

public PointReader getReader(long start,
                             long length)

Description copied from interface: PointWriter

Returns a PointReader iterator to step through all previously added points

Specified by:

getReader in interface PointWriter

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

destroy

public void destroy()

Description copied from interface: PointWriter

Removes any temp files behind this writer

Specified by:

destroy in interface PointWriter

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object