Uses of Class
org.h2.mvstore.RootReference

Packages that use RootReference

Package	Description
org.h2.mvstore	A persistent storage for tree maps.
org.h2.mvstore.tx	Helper classes to use the MVStore in a transactional manner.

Uses of RootReference in org.h2.mvstore

Fields in org.h2.mvstore declared as RootReference

Modifier and Type	Field	Description
(package private) RootReference<K,V>	RootReference.previous	Reference to the previous root in the chain.

Fields in org.h2.mvstore with type parameters of type RootReference

Modifier and Type	Field	Description
private final AtomicReference<RootReference<K,V>>	MVMap.root	Reference to the current root page.

Methods in org.h2.mvstore that return RootReference

Modifier and Type	Method	Description
(package private) RootReference<K,V>	MVMap.clearIt()	Remove all entries and return the root reference.
RootReference<K,V>	MVMap.flushAndGetRoot()	Get the root reference, flushing any current append buffer.
private RootReference<K,V>	MVMap.flushAppendBuffer(RootReference<K,V> rootReference, boolean fullFlush)	If map was used in append mode, this method will ensure that append buffer is flushed - emptied with all entries inserted into map as a new leaf.
RootReference<K,V>	MVMap.getRoot()
private RootReference<K,V>	MVMap.lockRoot(RootReference<K,V> rootReference, int attempt)
(package private) final RootReference<K,V>	MVMap.setWriteVersion(long writeVersion)
protected RootReference<K,V>	MVMap.tryLock(RootReference<K,V> rootReference, int attempt)	Try to lock the root.
(package private) RootReference<K,V>	RootReference.tryLock(int attemptCounter)	Try to lock.
(package private) RootReference<K,V>	RootReference.tryUnlockAndUpdateVersion(long version, int attempt)	Try to unlock, and if successful update the version
private RootReference<K,V>	RootReference.tryUpdate(RootReference<K,V> updatedRootReference)
private RootReference<K,V>	MVMap.unlockRoot()	Unlock the root page, the new root being null.
protected RootReference<K,V>	MVMap.unlockRoot(Page<K,V> newRootPage)	Unlock the root page.
private RootReference<K,V>	MVMap.unlockRoot(Page<K,V> newRootPage, int appendCounter)
(package private) RootReference<K,V>	RootReference.updatePageAndLockedStatus(Page<K,V> page, boolean keepLocked, int appendCounter)	Update the page, possibly keeping it locked.
(package private) RootReference<K,V>	RootReference.updateRootPage(Page<K,V> newRootPage, long attemptCounter)	Try to unlock.

Methods in org.h2.mvstore with parameters of type RootReference

Modifier and Type	Method	Description
(package private) final boolean	MVMap.compareAndSetRoot(RootReference<K,V> expectedRootReference, RootReference<K,V> updatedRootReference)	Compare and set the root reference.
Cursor<K,V>	MVMap.cursor(RootReference<K,V> rootReference, K from, K to, boolean reverse)	Get a cursor to iterate over a number of keys and values.
private RootReference<K,V>	MVMap.flushAppendBuffer(RootReference<K,V> rootReference, boolean fullFlush)	If map was used in append mode, this method will ensure that append buffer is flushed - emptied with all entries inserted into map as a new leaf.
private K	MVMap.getMinMax(RootReference<K,V> rootRef, K key, boolean min, boolean excluding)
final K	MVMap.higherKey(RootReference<K,V> rootRef, K key)	Get the smallest key that is larger than the given key, for the given root page, or null if no such key exists.
private RootReference<K,V>	MVMap.lockRoot(RootReference<K,V> rootReference, int attempt)
final K	MVMap.lowerKey(RootReference<K,V> rootRef, K key)	Get the largest key that is smaller than the given key, for the given root page, or null if no such key exists.
private void	MVMap.removeUnusedOldVersions(RootReference<K,V> rootReference)	Forget those old versions that are no longer needed.
protected RootReference<K,V>	MVMap.tryLock(RootReference<K,V> rootReference, int attempt)	Try to lock the root.
private RootReference<K,V>	RootReference.tryUpdate(RootReference<K,V> updatedRootReference)
protected static <K, V> boolean	MVMap.updateRoot(RootReference<K,V> expectedRootReference, Page<K,V> newRootPage, int attemptUpdateCounter)	Use the new root page from now on.

Constructors in org.h2.mvstore with parameters of type RootReference

Modifier	Constructor	Description
	Cursor(RootReference<K,V> rootReference, K from, K to)
	Cursor(RootReference<K,V> rootReference, K from, K to, boolean reverse)
private	RootReference(RootReference<K,V> r, int attempt)
private	RootReference(RootReference<K,V> r, long version, int attempt)
private	RootReference(RootReference<K,V> r, Page<K,V> root, boolean keepLocked, int appendCounter)
private	RootReference(RootReference<K,V> r, Page<K,V> root, long updateAttemptCounter)

Constructor parameters in org.h2.mvstore with type arguments of type RootReference

Modifier	Constructor	Description
private	MVMap(MVStore store, DataType<K> keyType, DataType<V> valueType, int id, long createVersion, AtomicReference<RootReference<K,V>> root, int keysPerPage, boolean singleWriter)

Uses of RootReference in org.h2.mvstore.tx

Fields in org.h2.mvstore.tx declared as RootReference

Modifier and Type	Field	Description
(package private) final RootReference<K,V>	Snapshot.root	The root reference.
private RootReference<Long,Record<?,?>>[]	Transaction.undoLogRootReferences	RootReferences for undo log snapshots

Methods in org.h2.mvstore.tx that return RootReference

Modifier and Type	Method	Description
(package private) RootReference<Long,Record<?,?>>[]	TransactionStore.collectUndoLogRootReferences()	Get the root references (snapshots) for undo-log maps.
(package private) RootReference<Long,Record<?,?>>[]	Transaction.getUndoLogRootReferences()

Methods in org.h2.mvstore.tx with parameters of type RootReference

Modifier and Type	Method	Description
private long	TransactionMap.adjustSize(RootReference<Long,Record<?,?>>[] undoLogRootReferences, RootReference<K,VersionedValue<V>> mapRootReference, BitSet committingTransactions, long size, long undoLogsTotalSize)
(package private) static long	TransactionStore.calculateUndoLogsTotalSize(RootReference<Long,Record<?,?>>[] undoLogRootReferences)	Calculate the size for undo log entries.
private V	TransactionMap.getFromSnapshot(RootReference<K,VersionedValue<V>> rootRef, BitSet committingTransactions, K key)

Method parameters in org.h2.mvstore.tx with type arguments of type RootReference

Modifier and Type	Method	Description
(package private) <R> R	TransactionMap.useSnapshot(BiFunction<RootReference<K,VersionedValue<V>>,BitSet,R> snapshotConsumer)	Gets a coherent picture of committing transactions and root reference, passes it to the specified function, and returns its result.

Constructors in org.h2.mvstore.tx with parameters of type RootReference

Modifier	Constructor	Description
(package private)	Snapshot(RootReference<K,V> root, BitSet committingTransactions)