Package org.h2.mvstore.tx

Class TransactionMap.TMIterator<K,V,X>

java.lang.Object

org.h2.mvstore.tx.TransactionMap.TMIterator<K,V,X>

All Implemented Interfaces:

java.util.Iterator<X>

Direct Known Subclasses:

TransactionMap.CommittedIterator, TransactionMap.RepeatableIterator, TransactionMap.UncommittedIterator

Enclosing class:

TransactionMap<K,V>

public abstract static class TransactionMap.TMIterator<K,V,X>
extends java.lang.Object
implements java.util.Iterator<X>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) java.util.BitSet	committingTransactions
(package private) X	current
protected Cursor<K,VersionedValue<V>>	cursor
private boolean	forEntries
(package private) int	transactionId

Constructor Summary

Constructors

Constructor	Description
TMIterator(TransactionMap<K,V> transactionMap, K from, K to, Snapshot<K,VersionedValue<V>> snapshot, boolean reverse, boolean forEntries)

Method Summary

Modifier and Type	Method	Description
abstract X	fetchNext()	Fetches a next entry.
boolean	hasNext()
X	next()
(package private) X	toElement(K key, java.lang.Object value)

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, remove

Field Detail

transactionId

final int transactionId

committingTransactions

final java.util.BitSet committingTransactions

cursor

protected final Cursor<K,VersionedValue<V>> cursor

forEntries

private final boolean forEntries

current

X current

Constructor Detail

TMIterator

TMIterator(TransactionMap<K,V> transactionMap,
           K from,
           K to,
           Snapshot<K,VersionedValue<V>> snapshot,
           boolean reverse,
           boolean forEntries)

Method Detail

toElement

final X toElement(K key,
                  java.lang.Object value)

fetchNext

public abstract X fetchNext()

Fetches a next entry. This method cannot be used together with hasNext() and next().

Returns:

the next entry or null

hasNext

public final boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<K>

next

public final X next()

Specified by:

next in interface java.util.Iterator<K>