Package com.complexible.stardog.db

Enum Class DatabaseOptions.TransactionIsolation

java.lang.Object

java.lang.Enum<DatabaseOptions.TransactionIsolation>

com.complexible.stardog.db.DatabaseOptions.TransactionIsolation

All Implemented Interfaces:

Serializable, Comparable<DatabaseOptions.TransactionIsolation>, Constable

Enclosing class:

DatabaseOptions

public static enum DatabaseOptions.TransactionIsolation
extends Enum<DatabaseOptions.TransactionIsolation>

Different types of transaction isolation supported by Stardog.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
SERIALIZABLE	Serializable transactions provides the highest level of isolation between transactions by acquiring an exclusive lock at the beginning of a transaction.
SNAPSHOT	Snapsot isolation is when each transaction reads from a snapshot of the database when the transaction started.

Method Summary

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

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

SNAPSHOT

public static final DatabaseOptions.TransactionIsolation SNAPSHOT

Snapsot isolation is when each transaction reads from a snapshot of the database when the transaction started. This isolation level provides highest throughput by allowing concurrent transactions to continue. But at commit time, the changes made in a transaction are applied to the latest version of the database contents which might have changed after the transaction started.

SERIALIZABLE

public static final DatabaseOptions.TransactionIsolation SERIALIZABLE

Serializable transactions provides the highest level of isolation between transactions by acquiring an exclusive lock at the beginning of a transaction. Therefore, any value read in a transaction is guaranteed to hold at commit time as well. Exclusive locks reduce the throughput of concurrent write transactions.

Method Details

values

public static DatabaseOptions.TransactionIsolation[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

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

valueOf

public static DatabaseOptions.TransactionIsolation valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name

NullPointerException - if the argument is null