程序包 org.hibernate.annotations

枚举 OptimisticLockType

java.lang.Object

java.lang.Enum<OptimisticLockType>

org.hibernate.annotations.OptimisticLockType

所有已实现的接口:

Serializable, Comparable<OptimisticLockType>

public enum OptimisticLockType
extends Enum<OptimisticLockType>

Possible optimistic locking strategies.

作者:

Emmanuel Bernard

枚举常量概要

枚举常量

枚举常量	说明
ALL	Perform optimistic locking based on *all* fields as part of an expanded WHERE clause restriction for the UPDATE/DELETE SQL statement.
DIRTY	Perform optimistic locking based on *dirty* fields as part of an expanded WHERE clause restriction for the UPDATE/DELETE SQL statement.
NONE	Perform no optimistic locking.
VERSION	Perform optimistic locking using a dedicated version column.

方法概要

修饰符和类型	方法	说明
static OptimisticLockType	valueOf(String name)	返回带有指定名称的该类型的枚举常量。
static OptimisticLockType[]	values()	按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

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

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

NONE

public static final OptimisticLockType NONE

Perform no optimistic locking.

VERSION

public static final OptimisticLockType VERSION

Perform optimistic locking using a dedicated version column.

另请参阅:

Version

DIRTY

public static final OptimisticLockType DIRTY

Perform optimistic locking based on *dirty* fields as part of an expanded WHERE clause restriction for the UPDATE/DELETE SQL statement.

ALL

public static final OptimisticLockType ALL

Perform optimistic locking based on *all* fields as part of an expanded WHERE clause restriction for the UPDATE/DELETE SQL statement.

方法详细资料

values

public static OptimisticLockType[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

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

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static OptimisticLockType valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值