CascadeType (Java EE 5)

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javax.persistence Enum CascadeType

java.lang.Object
  java.lang.Enum<CascadeType>
      javax.persistence.CascadeType

All Implemented Interfaces:: Serializable, Comparable<CascadeType>

public enum CascadeType
extends Enum<CascadeType>

Extends: Enum<E>

定义传播到关联实体的级联操作集。值 cascade=ALL 等于 cascade={PERSIST, MERGE, REMOVE, REFRESH}。

since

Java Persistence 1.0

英文文档：

Defines the set of cascadable operations that are propagated to the associated entity. The value cascade=ALLis equivalent tocascade={PERSIST, MERGE, REMOVE, REFRESH}.

Since:: Java Persistence 1.0

Enum Constant Summary
`ALL` Cascade all operations
`MERGE` Cascade merge operation
`PERSIST` Cascade persist operation
`REFRESH` Cascade refresh operation
`REMOVE` Cascade remove operation

Method Summary
`static CascadeType`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static CascadeType[]`	`values()` Returns an array containing the constants of this enum type, in the order they're declared.

Methods inherited from class java.lang.Enum
`clone, compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Enum Constant Detail

英文文档：

REFRESH

public static final CascadeType REFRESH

Cascade refresh operation

Method Detail

final public static CascadeType[] values()

英文文档：
values

public static final CascadeType[] values()

Returns an array containing the constants of this enum type, in the order they're declared. This method may be used to iterate over the constants as follows:

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

Returns:: an array containing the constants of this enum type, in the order they're declared

public static CascadeType valueOf(String name)

英文文档：
valueOf

public static CascadeType 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