io.atomix.core.transaction

Enum TransactionState

java.lang.Object

java.lang.Enum<TransactionState>

io.atomix.core.transaction.TransactionState

All Implemented Interfaces:

Serializable, Comparable<TransactionState>

public enum TransactionState
extends Enum<TransactionState>

Transaction state.

The transaction state is used to indicate the phase within which the transaction is currently running.

Enum Constant Summary

Enum Constants

Enum Constant and Description
ACTIVE Active transaction state.
COMMITTED Committed transaction state.
COMMITTING Committing transaction state.
PREPARED Prepared transaction state.
PREPARING Preparing transaction state.
ROLLED_BACK Rolled back transaction state.
ROLLING_BACK Rolling back transaction state.

Method Summary

Modifier and Type	Method and Description
static TransactionState	valueOf(String name) Returns the enum constant of this type with the specified name.
static TransactionState[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

ACTIVE

public static final TransactionState ACTIVE

Active transaction state.

The ACTIVE state represents a transaction in progress. Active transactions may or may not affect concurrently running transactions depending on the transaction's isolation level.

PREPARING

public static final TransactionState PREPARING

Preparing transaction state.

Once a transaction commitment begins, it enters the PREPARING phase of the two-phase commit protocol.

PREPARED

public static final TransactionState PREPARED

Prepared transaction state.

Once the first phase of the two-phase commit protocol is complete, the transaction's state is set to PREPARED.

COMMITTING

public static final TransactionState COMMITTING

Committing transaction state.

The COMMITTING state represents a transaction within the second phase of the two-phase commit protocol.

COMMITTED

public static final TransactionState COMMITTED

Committed transaction state.

Once the second phase of the two-phase commit protocol is complete, the transaction's state is set to COMMITTED.

ROLLING_BACK

public static final TransactionState ROLLING_BACK

Rolling back transaction state.

In the event of a two-phase lock failure, when the transaction is rolled back it will enter the ROLLING_BACK state while the rollback is in progress.

ROLLED_BACK

public static final TransactionState ROLLED_BACK

Rolled back transaction state.

Once a transaction has been rolled back, it will enter the ROLLED_BACK state.

Method Detail

values

public static TransactionState[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (TransactionState c : TransactionState.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static TransactionState valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null