SimpleQuery优化

package com.baomidou.mybatisplus.test.rewrite;

import lombok.Data;

import java.io.Serializable;

/**
 * @author miemie
 * @since 2020-06-23
 */
@Data
public class Entity implements Serializable {
    private static final long serialVersionUID = 6962439201546719734L;

    private Long id;

    private String name;
}

Map<Long, String> idNameMap = SimpleQuery.map(Wrappers.lambdaQuery(), Entity::getId, Entity::getName);

// SqlHelper#getMapper是根据`entity`获取对应`mapper`的方法
BaseMapper<Entity> mapper = SqlHelper.getMapper(Entity.class);
Entity entity = new Entity();
entity.setId(3L);
entity.setName("ruben");
mapper.insert(entity);

Map<String, List<Entity>> nameUsersMap = SimpleQuery.group(Wrappers.lambdaQuery(), Entity::getName);