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https://gitee.com/mybatis-flex/mybatis-flex.git
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59 lines
1.7 KiB
Java
59 lines
1.7 KiB
Java
/*
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* Copyright (c) 2022-2025, Mybatis-Flex (fuhai999@gmail.com).
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* <p>
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* <p>
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* http://www.apache.org/licenses/LICENSE-2.0
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* <p>
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.mybatisflex.annotation;
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import java.lang.annotation.*;
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/**
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* 数据库表中的列信息注解。
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*/
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@Inherited
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@Retention(RetentionPolicy.RUNTIME)
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@Target({ElementType.FIELD})
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public @interface Id {
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/**
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* ID 生成策略，默认为 {@link KeyType#None}。
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*
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* @return 生成策略
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*/
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KeyType keyType() default KeyType.None;
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/**
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* <p>若 keyType 类型是 sequence， value 则代表的是
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* sequence 序列的 sql 内容。
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* 例如：select SEQ_USER_ID.nextval as id from dual
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*
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* <p>若 keyType 是 Generator，value 则代表的是使用的那个 keyGenerator 的名称。
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*/
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String value() default "";
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/**
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* <p>sequence 序列执行顺序。
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*
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* <p>是在 entity 数据插入之前执行，还是之后执行，之后执行的一般是数据主动生成的 id。
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*
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* @return 执行之前还是之后
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*/
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boolean before() default true;
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/**
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* 数据库字段注释，在 AI 时代，注释的内容往往可用于 AI 辅助对话
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*/
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String comment() default "";
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}
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