Package com.ultikits.ultitools.annotations

Enum Class Isolation

java.lang.Object

java.lang.Enum<Isolation>

com.ultikits.ultitools.annotations.Isolation

All Implemented Interfaces:

Serializable, Comparable<Isolation>, java.lang.constant.Constable

public enum Isolation
extends Enum<Isolation>

Enum representing transaction isolation levels.

Isolation level determines how changes made by one transaction are visible to other concurrent transactions.

Since:

6.2.0

Author:

wisdomme

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
DEFAULT	Use the default isolation level of the underlying database.
READ_COMMITTED	Prevents dirty reads; allows non-repeatable reads and phantom reads.
READ_UNCOMMITTED	Allows dirty reads, non-repeatable reads, and phantom reads.
REPEATABLE_READ	Prevents dirty reads and non-repeatable reads; allows phantom reads.
SERIALIZABLE	Prevents dirty reads, non-repeatable reads, and phantom reads.

Field Summary

Fields

Modifier and Type	Field	Description
private final int	level

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Isolation(int level)

Method Summary

Modifier and Type	Method	Description
int	getLevel()	Gets the JDBC isolation level constant.
static Isolation	valueOf(String name)	Returns the enum constant of this class with the specified name.
static Isolation[]	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

DEFAULT

public static final Isolation DEFAULT

Use the default isolation level of the underlying database.

READ_UNCOMMITTED

public static final Isolation READ_UNCOMMITTED

Allows dirty reads, non-repeatable reads, and phantom reads.

Lowest isolation level. A transaction can read uncommitted changes made by other transactions.

READ_COMMITTED

public static final Isolation READ_COMMITTED

Prevents dirty reads; allows non-repeatable reads and phantom reads.

A transaction can only read committed changes made by other transactions.

REPEATABLE_READ

public static final Isolation REPEATABLE_READ

Prevents dirty reads and non-repeatable reads; allows phantom reads.

Ensures that if a row is read twice in a transaction, the values will be the same.

SERIALIZABLE

public static final Isolation SERIALIZABLE

Prevents dirty reads, non-repeatable reads, and phantom reads.

Highest isolation level. Transactions are completely isolated. May significantly impact performance.

Field Details

level

private final int level

Constructor Details

Isolation

private Isolation(int level)

Method Details

values

public static Isolation[] 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 Isolation 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

getLevel

public int getLevel()

Gets the JDBC isolation level constant.

Returns:

the isolation level, or -1 for DEFAULT