org.iq80.leveldb

Interface DBIterator

All Superinterfaces:

AutoCloseable, Closeable, Iterator<Map.Entry<byte[],byte[]>>

public interface DBIterator
extends Iterator<Map.Entry<byte[],byte[]>>, Closeable

Author:

Hiram Chirino

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasPrev()
Map.Entry<byte[],byte[]>	peekNext() Returns the next element in the iteration, without advancing the iteration.
Map.Entry<byte[],byte[]>	peekPrev()
Map.Entry<byte[],byte[]>	prev()
void	seek(byte[] key) Repositions the iterator so the key of the next BlockElement returned greater than or equal to the specified targetKey.
void	seekToFirst() Repositions the iterator so is is at the beginning of the Database.
void	seekToLast() Repositions the iterator so it is at the end of of the Database.

Methods inherited from interface java.util.Iterator

hasNext, next, remove

Methods inherited from interface java.io.Closeable

close

Method Detail

seek

void seek(byte[] key)

Repositions the iterator so the key of the next BlockElement returned greater than or equal to the specified targetKey.

seekToFirst

void seekToFirst()

Repositions the iterator so is is at the beginning of the Database.

peekNext

Map.Entry<byte[],byte[]> peekNext()

Returns the next element in the iteration, without advancing the iteration.

hasPrev

boolean hasPrev()

Returns:

true if there is a previous entry in the iteration.

prev

Map.Entry<byte[],byte[]> prev()

Returns:

the previous element in the iteration and rewinds the iteration.

peekPrev

Map.Entry<byte[],byte[]> peekPrev()

Returns:

the previous element in the iteration, without rewinding the iteration.

seekToLast

void seekToLast()

Repositions the iterator so it is at the end of of the Database.