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 java.util.concurrent.atomic.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) 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) 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)
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)
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

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

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

Constructor	Description
MVMap(MVStore store, DataType<K> keyType, DataType<V> valueType, int id, long createVersion, java.util.concurrent.atomic.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) RootReference<K,V>	Snapshot.root	The root reference.
private RootReference<java.lang.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<java.lang.Long,Record<?,?>>[]	TransactionStore.collectUndoLogRootReferences()	Get the root references (snapshots) for undo-log maps.
(package private) RootReference<java.lang.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<java.lang.Long,Record<?,?>>[] undoLogRootReferences, RootReference<K,VersionedValue<V>> mapRootReference, java.util.BitSet committingTransactions, long size, long undoLogsTotalSize)
(package private) static long	TransactionStore.calculateUndoLogsTotalSize(RootReference<java.lang.Long,Record<?,?>>[] undoLogRootReferences)	Calculate the size for undo log entries.
private V	TransactionMap.getFromSnapshot(RootReference<K,VersionedValue<V>> rootRef, java.util.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(java.util.function.BiFunction<RootReference<K,VersionedValue<V>>,java.util.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

Constructor	Description
Snapshot(RootReference<K,V> root, java.util.BitSet committingTransactions)