Module storm.foundation

Package st.orm

Enum Class TransactionIsolation

java.lang.Object

java.lang.Enum<TransactionIsolation>

st.orm.TransactionIsolation

All Implemented Interfaces:

Serializable, Comparable<TransactionIsolation>, Constable

public enum TransactionIsolation
extends Enum<TransactionIsolation>

Transaction isolation levels, mapping to the JDBC isolation constants.

There is no DEFAULT member: leaving the isolation unset means the provider's (typically the database's) default applies.

Since:

1.13

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
READ_COMMITTED	Dirty reads are prevented; non-repeatable reads and phantom reads can occur.
READ_UNCOMMITTED	Dirty reads, non-repeatable reads, and phantom reads can occur.
REPEATABLE_READ	Dirty reads and non-repeatable reads are prevented; phantom reads can occur.
SERIALIZABLE	Dirty reads, non-repeatable reads, and phantom reads are prevented.

Method Summary

Modifier and Type	Method	Description
static TransactionIsolation	fromJdbcLevel(int jdbcLevel)	Returns the isolation level for the given JDBC constant.
int	jdbcLevel()	The corresponding Connection isolation constant.
static TransactionIsolation	valueOf(String name)	Returns the enum constant of this class with the specified name.
static 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

READ_UNCOMMITTED

public static final TransactionIsolation READ_UNCOMMITTED

Dirty reads, non-repeatable reads, and phantom reads can occur.

READ_COMMITTED

public static final TransactionIsolation READ_COMMITTED

Dirty reads are prevented; non-repeatable reads and phantom reads can occur.

REPEATABLE_READ

public static final TransactionIsolation REPEATABLE_READ

Dirty reads and non-repeatable reads are prevented; phantom reads can occur.

SERIALIZABLE

public static final TransactionIsolation SERIALIZABLE

Dirty reads, non-repeatable reads, and phantom reads are prevented.

Method Details

values

public static 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 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

jdbcLevel

public int jdbcLevel()

The corresponding Connection isolation constant.

fromJdbcLevel

public static TransactionIsolation fromJdbcLevel(int jdbcLevel)

Returns the isolation level for the given JDBC constant.

Parameters:

jdbcLevel - a Connection isolation constant.

Throws:

IllegalArgumentException - if the constant does not map to an isolation level.