Package net.sf.jkniv.sqlegance.transaction

Enum Isolation

java.lang.Object

java.lang.Enum<Isolation>

net.sf.jkniv.sqlegance.transaction.Isolation

All Implemented Interfaces:

Serializable, Comparable<Isolation>

public enum Isolation
extends Enum<Isolation>

Enumeration that represents transaction isolation levels for use with the connection data source.

• NONE
• READ_UNCOMMITTED
• READ_COMMITTED
• REPEATABLE_READ
• SERIALIZABLE

Author:

Alisson Gomes

Enum Constant Summary

Enum Constants

Enum Constant	Description
DEFAULT	Use the default isolation level of the underlying connection data source.
NONE	Transactions are not supported
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 Isolation	get(int level)
static Isolation	get(String type)
abstract int	level()
static Isolation	valueOf(String name)	Returns the enum constant of this type with the specified name.
static Isolation[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

DEFAULT

public static final Isolation DEFAULT

Use the default isolation level of the underlying connection data source. This level cannot be set at connection isolation.

NONE

public static final Isolation NONE

Transactions are not supported

READ_UNCOMMITTED

public static final Isolation READ_UNCOMMITTED

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

READ_COMMITTED

public static final Isolation READ_COMMITTED

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

REPEATABLE_READ

public static final Isolation REPEATABLE_READ

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

SERIALIZABLE

public static final Isolation SERIALIZABLE

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

Method Detail

values

public static Isolation[] 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 (Isolation c : Isolation.values())
    System.out.println(c);

Returns:

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

valueOf

public static Isolation 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

level

public abstract int level()

get

public static Isolation get(int level)

get

public static Isolation get(String type)

Parameters:

type - String that represent enum ignoring case

Returns:

the value of type, type of not found return DEFAULT enum.