app.myoss.cloud.mybatis.table.annotation

Enum GenerationType

java.lang.Object

java.lang.Enum<GenerationType>

app.myoss.cloud.mybatis.table.annotation.GenerationType

All Implemented Interfaces:

Serializable, Comparable<GenerationType>

public enum GenerationType
extends Enum<GenerationType>

生成主键id策略类型

Since:

2018年4月30日 下午10:49:06

Author:

Jerry.Chen

Enum Constant Summary

Enum Constants

Enum Constant and Description
SELECT_KEY 配置 SelectKey 属性，使用 SelectKeyGenerator 来触发调用
SEQUENCE_KEY 配置 SequenceKey 属性，使用 Java Sequence 接口实现类来生成序列值，由 SequenceKeyGenerator 触发调用
USE_GENERATED_KEYS 如果插入的表主键是自增列，则可以使用 JDBC 自动生成主键，并可将生成的主键值返回。

Method Summary

Modifier and Type	Method and Description
static GenerationType	valueOf(String name) Returns the enum constant of this type with the specified name.
static GenerationType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

USE_GENERATED_KEYS

public static final GenerationType USE_GENERATED_KEYS

如果插入的表主键是自增列，则可以使用 JDBC 自动生成主键，并可将生成的主键值返回。

 <insert id="insert" useGeneratedKeys="true" parameterType="...">
   insert into User(id, name, age) values (#{id}, #{name}, #{age})
 </insert>
 

SELECT_KEY

public static final GenerationType SELECT_KEY

配置 SelectKey 属性，使用 SelectKeyGenerator 来触发调用

SEQUENCE_KEY

public static final GenerationType SEQUENCE_KEY

配置 SequenceKey 属性，使用 Java Sequence 接口实现类来生成序列值，由 SequenceKeyGenerator 触发调用

Method Detail

values

public static GenerationType[] values()

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

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

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static GenerationType 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

NullPointerException - if the argument is null