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package top.lingkang.finalsql.annotation;

import top.lingkang.finalsql.base.IdGenerate;
import top.lingkang.finalsql.constants.IdType;

import java.lang.annotation.*;

/**
 * @author lingkang
 * Created by 2022/4/11
 * 声明列为主键ID
 */
@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface Id {
    /**
     * 手动添加id,若自动生成 ID 默认针对mysql的自动增长,则应该将类型改为 IdType.AUTO
     */
    IdType value() default IdType.INPUT;

    /**
     * 在 IdType.AUTO 前提下,sequence 是针对 postgre SQL 等数据库协议设计。若是MySQL需要设置自增长
     * 详情可查看 {@link top.lingkang.finalsql.dialect.PostgreSqlDialect}
     * @see top.lingkang.finalsql.dialect.PostgreSqlDialect#nextval(String column)
     */
    String sequence() default "";
}




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