Module org.apache.lucene.core

Package org.apache.lucene.util

Class FixedLengthBytesRefArray

java.lang.Object

org.apache.lucene.util.FixedLengthBytesRefArray

All Implemented Interfaces:

SortableBytesRefArray

final class FixedLengthBytesRefArray
extends Object
implements SortableBytesRefArray

Just like BytesRefArray except all values have the same length.

Note: This class is not Thread-Safe!

Field Summary

Fields

Modifier and Type	Field	Description
private byte[][]	blocks
private int	currentBlock	How many blocks are used
private int	nextEntry
private int	size	How many values have been appended
private final int	valueLength
private final int	valuesPerBlock

Constructor Summary

Constructors

Constructor	Description
FixedLengthBytesRefArray(int valueLength)	Creates a new BytesRefArray with a counter to track allocated bytes

Method Summary

Modifier and Type	Method	Description
int	append(BytesRef bytes)	Appends a copy of the given BytesRef to this BytesRefArray.
void	clear()	Clears this BytesRefArray
BytesRefIterator	iterator(Comparator<BytesRef> comp)	Returns a BytesRefIterator with point in time semantics.
int	size()	Returns the current size of this FixedLengthBytesRefArray
private int[]	sort(Comparator<BytesRef> comp)

Methods inherited from class java.lang.Object

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

Field Details

valueLength

private final int valueLength

valuesPerBlock

private final int valuesPerBlock

size

private int size

How many values have been appended

currentBlock

private int currentBlock

How many blocks are used

nextEntry

private int nextEntry

blocks

private byte[][] blocks

Constructor Details

FixedLengthBytesRefArray

public FixedLengthBytesRefArray(int valueLength)

Creates a new BytesRefArray with a counter to track allocated bytes

Method Details

clear

public void clear()

Clears this BytesRefArray

Specified by:

clear in interface SortableBytesRefArray

append

public int append(BytesRef bytes)

Appends a copy of the given BytesRef to this BytesRefArray.

Specified by:

append in interface SortableBytesRefArray

Parameters:

bytes - the bytes to append

Returns:

the index of the appended bytes

size

public int size()

Returns the current size of this FixedLengthBytesRefArray

Specified by:

size in interface SortableBytesRefArray

Returns:

the current size of this FixedLengthBytesRefArray

sort

private int[] sort(Comparator<BytesRef> comp)

iterator

public BytesRefIterator iterator(Comparator<BytesRef> comp)

Returns a BytesRefIterator with point in time semantics. The iterator provides access to all so far appended BytesRef instances.

The iterator will iterate the byte values in the order specified by the comparator.

This is a non-destructive operation.

Specified by:

iterator in interface SortableBytesRefArray