EnumType (Java EE 5 SDK)

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Java EE 5 SDK

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摘要: 嵌套 | ENUM 构造器 | 字段 | 方法

详细信息: ENUM 构造器 | 字段 | 方法

javax.persistence Enum EnumType

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

所有已实现的接口:: Serializable, Comparable<EnumType>

public enum EnumType
extends Enum<EnumType>

Defines mapping for the enumerated types. The constants of this enumerated type specify how persistent property or field should be persisted as a enumerated type.

从以下版本开始:: Java Persistence 1.0

Enum 常量摘要
`ORDINAL` Persist enumerated type property or field as an integer
`STRING` Persist enumerated type property or field as a string

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

类方法继承 java.lang.Enum
`clone, compareTo, equals, getDeclaringClass, hashCode, name, ordinal, toString, valueOf`

类方法继承 java.lang.Object
`finalize, getClass, notify, notifyAll, wait, wait, wait`

Enum 常量详细信息

ORDINAL

public static final EnumType ORDINAL

Persist enumerated type property or field as an integer

STRING

public static final EnumType STRING

Persist enumerated type property or field as a string

方法详细信息

values

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

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

valueOf

public static EnumType 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.)

参数:: name - the name of the enum constant to be returned.
返回:: the enum constant with the specified name
抛出异常:: IllegalArgumentException - if this enum type has no constant with the specified name

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