org.h2.mvstore.db
Class TransactionStore.Transaction

java.lang.Object
  org.h2.mvstore.db.TransactionStore.Transaction

Enclosing class:

TransactionStore

public static class TransactionStore.Transaction
extends java.lang.Object

A transaction.

Field Summary

static int	STATUS_CLOSED The status of a closed transaction (committed or rolled back).
static int	STATUS_OPEN The status of an open transaction.
static int	STATUS_PREPARED The status of a prepared transaction.

Method Summary

void	commit() Commit the transaction.
java.util.Set<java.lang.String>	getChangedMaps(long savepointId) Get the set of changed maps starting at the given savepoint up to now.
long	getId()
java.lang.String	getName()
int	getStatus()
<K,V> TransactionStore.TransactionMap<K,V>	openMap(java.lang.String name) Open a data map.
<K,V> TransactionStore.TransactionMap<K,V>	openMap(java.lang.String name, MVMap.Builder<K,V> builder) Open the map to store the data.
void	prepare() Prepare the transaction.
void	rollback() Roll the transaction back.
void	rollbackToSavepoint(long savepointId) Roll back to the given savepoint.
void	setName(java.lang.String name)
long	setSavepoint() Create a new savepoint.

Methods inherited from class java.lang.Object

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

Field Detail

STATUS_OPEN

public static final int STATUS_OPEN

The status of an open transaction.

See Also:

Constant Field Values

STATUS_PREPARED

public static final int STATUS_PREPARED

The status of a prepared transaction.

See Also:

Constant Field Values

STATUS_CLOSED

public static final int STATUS_CLOSED

The status of a closed transaction (committed or rolled back).

See Also:

Constant Field Values

Method Detail

getId

public long getId()

getStatus

public int getStatus()

setName

public void setName(java.lang.String name)

getName

public java.lang.String getName()

setSavepoint

public long setSavepoint()

Create a new savepoint.

Returns:

the savepoint id

openMap

public <K,V> TransactionStore.TransactionMap<K,V> openMap(java.lang.String name)

Open a data map.

Type Parameters:

K - the key type

V - the value type

Parameters:

name - the name of the map

Returns:

the transaction map

openMap

public <K,V> TransactionStore.TransactionMap<K,V> openMap(java.lang.String name,
                                                          MVMap.Builder<K,V> builder)

Open the map to store the data.

Type Parameters:

K - the key type

V - the value type

Parameters:

name - the name of the map

builder - the builder

Returns:

the transaction map

prepare

public void prepare()

Prepare the transaction. Afterwards, the transaction can only be committed or rolled back.

commit

public void commit()

Commit the transaction. Afterwards, this transaction is closed.

rollbackToSavepoint

public void rollbackToSavepoint(long savepointId)

Roll back to the given savepoint. This is only allowed if the transaction is open.

Parameters:

savepointId - the savepoint id

rollback

public void rollback()

Roll the transaction back. Afterwards, this transaction is closed.

getChangedMaps

public java.util.Set<java.lang.String> getChangedMaps(long savepointId)

Get the set of changed maps starting at the given savepoint up to now.

Parameters:

savepointId - the savepoint id, 0 meaning the beginning of the transaction

Returns:

the set of changed maps