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/*
 *  Copyright (c) 2022-2025, Mybatis-Flex ([email protected]).
 *  

* Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at *

* http://www.apache.org/licenses/LICENSE-2.0 *

* Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.mybatisflex.annotation; import java.lang.annotation.*; /** * 数据库表中的列信息注解。 */ @Inherited @Retention(RetentionPolicy.RUNTIME) @Target({ElementType.FIELD}) public @interface Id { /** * ID 生成策略,默认为 {@link KeyType#None}。 * * @return 生成策略 */ KeyType keyType() default KeyType.None; /** *

若 keyType 类型是 sequence, value 则代表的是 * sequence 序列的 sql 内容。 * 例如:select SEQ_USER_ID.nextval as id from dual * *

若 keyType 是 Generator,value 则代表的是使用的那个 keyGenerator 的名称。 */ String value() default ""; /** *

sequence 序列执行顺序。 * *

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。 * * @return 执行之前还是之后 */ boolean before() default true; /** * 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 */ String comment() default ""; }





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