Package org.h2.mvstore.tx

Class TransactionMap.UncommittedIterator<K,V,X>

java.lang.Object

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

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

Type Parameters:

K - the type of keys

X - the type of elements

All Implemented Interfaces:

Iterator<X>

Direct Known Subclasses:

TransactionMap.ValidationIterator

Enclosing class:

TransactionMap<K,V>

private static class TransactionMap.UncommittedIterator<K,V,X>
extends TransactionMap.TMIterator<K,V,X>

The iterator for read uncommitted isolation level. This iterator is also used for unique indexes.

Field Summary

Fields inherited from class org.h2.mvstore.tx.TransactionMap.TMIterator

committingTransactions, current, cursor, transactionId

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
final X	fetchNext()	Fetches a next entry.
(package private) boolean	shouldIgnoreRemoval(VersionedValue<?> data)

Methods inherited from class org.h2.mvstore.tx.TransactionMap.TMIterator

hasNext, next, toElement

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

Constructor Details

UncommittedIterator

UncommittedIterator(TransactionMap<K,V> transactionMap,
 K from,
 K to,
 boolean reverse,
 boolean forEntries)

UncommittedIterator

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

Method Details

fetchNext

public final X fetchNext()

Description copied from class: TransactionMap.TMIterator

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

Specified by:

fetchNext in class TransactionMap.TMIterator<K,V,X>

Returns:

the next entry or null

shouldIgnoreRemoval

boolean shouldIgnoreRemoval(VersionedValue<?> data)