mp wrapper小技巧

Db.list(Wrappers.lambdaQuery(UserInfo.class).or().eq(UserInfo::getName, "Jon"));

2023-04-13 22:39:54.858 DEBUG 20668 --- [           main] o.d.s.s.p.m.m.UserInfoMapper.selectList  : ==>  Preparing: SELECT id,name,age,email,version,gmt_deleted FROM user_info WHERE gmt_deleted='2001-01-01 00:00:00' AND (name = ?)
2023-04-13 22:39:54.858 DEBUG 20668 --- [           main] o.d.s.s.p.m.m.UserInfoMapper.selectList  : ==> Parameters: Jon(String)

/**
 * or 查询
 *
 * @param wrapper 条件构造器
 * @param dataList 数据
 * @param biConsumer 逻辑处理
 * @param <W> 条件构造器
 * @param <T> 实体类型
 * @param <R> 数据类型
 * @return 条件构造器
 */
public static <W extends AbstractWrapper<T, ?, W>, T, R> W multiOr(
    W wrapper, Collection<R> dataList, BiConsumer<W, R> biConsumer) {
  if (Lists.isEmpty(dataList)) {
    return Database.notActive(wrapper);
  }
  return wrapper.nested(w -> dataList.forEach(data -> biConsumer.accept(w.or(), data)));
}

val dataList =
    Lists.of(
        new UserInfo() {
          {
            setName("Jon");
          }
        },
        new UserInfo() {
          {
            setEmail("test2@baomidou.com");
          }
        },
        new UserInfo() {
          {
            setName("Tom");
          }
        });
val wrapper =
    WrapperHelper.multiOr(
        Wrappers.lambdaQuery(UserInfo.class),
        dataList,
        (w, data) -> {
          w.eq(Objects.nonNull(data.getEmail()), UserInfo::getEmail, data.getEmail())
              .eq(StringUtils.isNotBlank(data.getName()), UserInfo::getName, data.getName());
        });
// ==>  Preparing: SELECT id,name,age,email,version,gmt_deleted FROM user_info WHERE
// gmt_deleted='2001-01-01 00:00:00' AND ((name = ? OR email = ? OR name = ?))
// ==> Parameters: Jon(String), test2@baomidou.com(String), Tom(String)
List<UserInfo> userInfos = Database.list(wrapper);
Assertions.assertEquals("Jon", userInfos.get(0).getName());
Assertions.assertEquals("test2@baomidou.com", userInfos.get(1).getEmail());
Assertions.assertEquals("Tom", userInfos.get(2).getName());