程序包 org.hibernate.type

枚举 ForeignKeyDirection

java.lang.Object

java.lang.Enum<ForeignKeyDirection>

org.hibernate.type.ForeignKeyDirection

所有已实现的接口:

Serializable, Comparable<ForeignKeyDirection>

public enum ForeignKeyDirection
extends Enum<ForeignKeyDirection>

Represents directionality of the foreign key constraint

作者:

Gavin King, Steve Ebersole

枚举常量概要

枚举常量

枚举常量	说明
FROM_PARENT	A foreign key from parent to child
TO_PARENT	A foreign key from child to parent

方法概要

修饰符和类型	方法	说明
abstract boolean	cascadeNow(CascadePoint cascadePoint)	Should we cascade at this cascade point?
static ForeignKeyDirection	valueOf(String name)	返回带有指定名称的该类型的枚举常量。
static ForeignKeyDirection[]	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

TO_PARENT

public static final ForeignKeyDirection TO_PARENT

A foreign key from child to parent

FROM_PARENT

public static final ForeignKeyDirection FROM_PARENT

A foreign key from parent to child

方法详细资料

values

public static ForeignKeyDirection[] 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 (ForeignKeyDirection c : ForeignKeyDirection.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 ForeignKeyDirection 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

cascadeNow

public abstract boolean cascadeNow(CascadePoint cascadePoint)

Should we cascade at this cascade point?

参数:

cascadePoint - The point at which the cascade is being initiated.

返回:

true if cascading should be performed now.

另请参阅:

Cascade