InheritanceType (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 InheritanceType

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

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

public enum InheritanceType
extends Enum<InheritanceType>

Defines inheritance strategy options.

从以下版本开始:: Java Persistence 1.0

Enum 常量摘要
`JOINED` A strategy in which fields that are specific to a subclass are mapped to a separate table than the fields that are common to the parent class, and a join is performed to instantiate the subclass.
`SINGLE_TABLE` A single table per class hierarchy
`TABLE_PER_CLASS` A table per concrete entity class

方法摘要
`static InheritanceType`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static InheritanceType[]`	`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

SINGLE_TABLE

public static final InheritanceType SINGLE_TABLE

A single table per class hierarchy

TABLE_PER_CLASS

public static final InheritanceType TABLE_PER_CLASS

A table per concrete entity class

JOINED

public static final InheritanceType JOINED

A strategy in which fields that are specific to a subclass are mapped to a separate table than the fields that are common to the parent class, and a join is performed to instantiate the subclass.

方法详细信息

values

public static final InheritanceType[] 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(InheritanceType c : InheritanceType.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 InheritanceType 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

概述