Package org.iq80.leveldb.util

Class AbstractSeekingIterator<K,V>

java.lang.Object

org.iq80.leveldb.util.AbstractSeekingIterator<K,V>

All Implemented Interfaces:

com.google.common.collect.PeekingIterator<Map.Entry<K,V>>, Iterator<Map.Entry<K,V>>, SeekingIterator<K,V>

Direct Known Subclasses:

DbIterator, InternalTableIterator, Level0Iterator, LevelIterator, MergingIterator, SnapshotSeekingIterator, TableIterator

public abstract class AbstractSeekingIterator<K,V>
extends Object
implements SeekingIterator<K,V>

Field Summary

Fields

Modifier and Type	Field	Description
private Map.Entry<K,V>	nextElement

Constructor Summary

Constructors

Constructor	Description
AbstractSeekingIterator()

Method Summary

Modifier and Type	Method	Description
protected abstract Map.Entry<K,V>	getNextElement()
final boolean	hasNext()
final Map.Entry<K,V>	next()
final Map.Entry<K,V>	peek()
final void	remove()
final void	seek(K targetKey)	Repositions the iterator so the key of the next BlockElement returned greater than or equal to the specified targetKey.
protected abstract void	seekInternal(K targetKey)
final void	seekToFirst()	Repositions the iterator so the beginning of this block.
protected abstract void	seekToFirstInternal()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Details

nextElement

private Map.Entry<K,V> nextElement

Constructor Details

AbstractSeekingIterator

public AbstractSeekingIterator()

Method Details

seekToFirst

public final void seekToFirst()

Description copied from interface: SeekingIterator

Repositions the iterator so the beginning of this block.

Specified by:

seekToFirst in interface SeekingIterator<K,V>

seek

public final void seek(K targetKey)

Description copied from interface: SeekingIterator

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

Specified by:

seek in interface SeekingIterator<K,V>

hasNext

public final boolean hasNext()

Specified by:

hasNext in interface Iterator<K>

next

public final Map.Entry<K,V> next()

Specified by:

next in interface Iterator<K>

Specified by:

next in interface com.google.common.collect.PeekingIterator<K>

peek

public final Map.Entry<K,V> peek()

Specified by:

peek in interface com.google.common.collect.PeekingIterator<K>

remove

public final void remove()

Specified by:

remove in interface Iterator<K>

Specified by:

remove in interface com.google.common.collect.PeekingIterator<K>

seekToFirstInternal

protected abstract void seekToFirstInternal()

seekInternal

protected abstract void seekInternal(K targetKey)

getNextElement

protected abstract Map.Entry<K,V> getNextElement()