From 342c25c0dd96c0796eeab8a32837fde1edf26ab3 Mon Sep 17 00:00:00 2001 From: puhui999 Date: Sat, 21 Sep 2024 22:28:23 +0800 Subject: [PATCH] =?UTF-8?q?=E3=80=90=E4=BB=A3=E7=A0=81=E4=BC=98=E5=8C=96?= =?UTF-8?q?=E3=80=91=E5=95=86=E5=9F=8E:=20=E5=AE=8C=E5=96=84=E7=A7=AF?= =?UTF-8?q?=E5=88=86=E5=95=86=E5=9F=8E?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../promotion/enums/ErrorCodeConstants.java | 5 +- .../admin/point/PointActivityController.java | 9 ++ .../vo/product/PointProductSaveReqVO.java | 8 +- .../dal/dataobject/point/PointActivityDO.java | 9 ++ .../dal/dataobject/point/PointProductDO.java | 15 +- .../pointproduct/PointProductDO.java | 62 -------- .../dal/mysql/point/PointProductMapper.java | 21 ++- .../service/point/PointActivityService.java | 7 + .../point/PointActivityServiceImpl.java | 140 ++++++++++++++++-- 9 files changed, 183 insertions(+), 93 deletions(-) delete mode 100644 yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/pointproduct/PointProductDO.java diff --git a/yudao-module-mall/yudao-module-promotion-api/src/main/java/cn/iocoder/yudao/module/promotion/enums/ErrorCodeConstants.java b/yudao-module-mall/yudao-module-promotion-api/src/main/java/cn/iocoder/yudao/module/promotion/enums/ErrorCodeConstants.java index 6ad7b1f19..af8206d2d 100644 --- a/yudao-module-mall/yudao-module-promotion-api/src/main/java/cn/iocoder/yudao/module/promotion/enums/ErrorCodeConstants.java +++ b/yudao-module-mall/yudao-module-promotion-api/src/main/java/cn/iocoder/yudao/module/promotion/enums/ErrorCodeConstants.java @@ -46,7 +46,10 @@ public interface ErrorCodeConstants { // ========== 积分商城活动 1-013-007-000 ========== ErrorCode POINT_ACTIVITY_NOT_EXISTS = new ErrorCode(1_013_007_000, "积分商城活动不存在"); - ErrorCode POINT_PRODUCT_NOT_EXISTS = new ErrorCode(1_013_007_100, "积分商城商品不存在"); + ErrorCode POINT_ACTIVITY_SPU_CONFLICTS = new ErrorCode(1_013_007_001, "存在商品参加了其它积分商城活动"); + ErrorCode POINT_ACTIVITY_UPDATE_FAIL_STATUS_CLOSED = new ErrorCode(1_013_007_002, "积分商城活动已关闭，不能修改"); + ErrorCode POINT_ACTIVITY_DELETE_FAIL_STATUS_NOT_CLOSED_OR_END = new ErrorCode(1_013_007_003, "积分商城活动未关闭或未结束，不能删除"); + ErrorCode POINT_ACTIVITY_CLOSE_FAIL_STATUS_CLOSED = new ErrorCode(1_013_007_004, "积分商城活动已关闭，不能重复关闭"); // ========== 秒杀活动 1-013-008-000 ========== ErrorCode SECKILL_ACTIVITY_NOT_EXISTS = new ErrorCode(1_013_008_000, "秒杀活动不存在"); diff --git a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/point/PointActivityController.java b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/point/PointActivityController.java index 4b76a22d4..56a95e6d3 100644 --- a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/point/PointActivityController.java +++ b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/point/PointActivityController.java @@ -51,6 +51,15 @@ public class PointActivityController { return success(true); } + @PutMapping("/close") + @Operation(summary = "关闭积分商城活动") + @Parameter(name = "id", description = "编号", required = true) + @PreAuthorize("@ss.hasPermission('promotion:point-activity:close')") + public CommonResult closeSeckillActivity(@RequestParam("id") Long id) { + pointActivityService.closePointActivity(id); + return success(true); + } + @DeleteMapping("/delete") @Operation(summary = "删除积分商城活动") @Parameter(name = "id", description = "编号", required = true) diff --git a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/point/vo/product/PointProductSaveReqVO.java b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/point/vo/product/PointProductSaveReqVO.java index 671ee57da..c1452537e 100644 --- a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/point/vo/product/PointProductSaveReqVO.java +++ b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/controller/admin/point/vo/product/PointProductSaveReqVO.java @@ -25,7 +25,7 @@ public class PointProductSaveReqVO { @Schema(description = "可兑换数量", requiredMode = Schema.RequiredMode.REQUIRED, example = "3926") @NotNull(message = "可兑换数量不能为空") - private Integer maxCount; + private Integer count; @Schema(description = "兑换积分", requiredMode = Schema.RequiredMode.REQUIRED) @NotNull(message = "兑换积分不能为空") @@ -35,9 +35,9 @@ public class PointProductSaveReqVO { @NotNull(message = "兑换金额，单位：分不能为空") private Integer price; - @Schema(description = "兑换类型", requiredMode = Schema.RequiredMode.REQUIRED, example = "2") - @NotNull(message = "兑换类型不能为空") - private Integer type; + @Schema(description = "积分商城商品库存", requiredMode = Schema.RequiredMode.REQUIRED, example = "100") + @NotNull(message = "积分商城商品不能为空") + private Integer stock; @Schema(description = "积分商城商品状态", requiredMode = Schema.RequiredMode.REQUIRED, example = "2") @NotNull(message = "积分商城商品状态不能为空") diff --git a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/point/PointActivityDO.java b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/point/PointActivityDO.java index 40b608d3a..c3345be88 100644 --- a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/point/PointActivityDO.java +++ b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/point/PointActivityDO.java @@ -45,4 +45,13 @@ public class PointActivityDO extends BaseDO { */ private Integer sort; + /** + * 积分商城活动库存(剩余库存积分兑换时扣减) + */ + private Integer stock; + /** + * 积分商城活动总库存 + */ + private Integer totalStock; + } diff --git a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/point/PointProductDO.java b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/point/PointProductDO.java index 2da34f524..041ac5a03 100644 --- a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/point/PointProductDO.java +++ b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/point/PointProductDO.java @@ -42,24 +42,21 @@ public class PointProductDO extends BaseDO { */ private Long skuId; /** - * 可兑换数量 + * 可兑换次数 */ - private Integer maxCount; + private Integer count; /** - * 兑换积分 + * 所需兑换积分 */ private Integer point; /** - * 兑换金额，单位：分 + * 所需兑换金额，单位：分 */ private Integer price; /** - * 兑换类型 - * 1. 积分 - * 2. 积分 + 钱 - * 3. 直接购买 + * 积分商城商品库存 */ - private Integer type; + private Integer stock; /** * 积分商城商品状态 * diff --git a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/pointproduct/PointProductDO.java b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/pointproduct/PointProductDO.java deleted file mode 100644 index 4ffcdbdbe..000000000 --- a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/dataobject/pointproduct/PointProductDO.java +++ /dev/null @@ -1,62 +0,0 @@ -package cn.iocoder.yudao.module.promotion.dal.dataobject.pointproduct; - -import cn.iocoder.yudao.framework.mybatis.core.dataobject.BaseDO; -import com.baomidou.mybatisplus.annotation.KeySequence; -import com.baomidou.mybatisplus.annotation.TableId; -import com.baomidou.mybatisplus.annotation.TableName; -import lombok.*; - -/** - * 积分商城商品 DO - * - * @author HUIHUI - */ -@TableName("promotion_point_product") -@KeySequence("promotion_point_product_seq") // 用于 Oracle、PostgreSQL、Kingbase、DB2、H2 数据库的主键自增。如果是 MySQL 等数据库，可不写。 -@Data -@EqualsAndHashCode(callSuper = true) -@ToString(callSuper = true) -@Builder -@NoArgsConstructor -@AllArgsConstructor -public class PointProductDO extends BaseDO { - - /** - * 积分商城商品编号 - */ - @TableId - private Long id; - /** - * 积分商城活动 id - */ - private Long activityId; - /** - * 商品 SPU 编号 - */ - private Long spuId; - /** - * 商品 SKU 编号 - */ - private Long skuId; - /** - * 可兑换数量 - */ - private Integer maxCount; - /** - * 兑换积分 - */ - private Integer point; - /** - * 兑换金额，单位：分 - */ - private Integer price; - /** - * 兑换类型 - */ - private Integer type; - /** - * 积分商城商品状态 - */ - private Integer activityStatus; - -} \ No newline at end of file diff --git a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/point/PointProductMapper.java b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/point/PointProductMapper.java index 230980544..a0869b6da 100644 --- a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/point/PointProductMapper.java +++ b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/dal/mysql/point/PointProductMapper.java @@ -4,9 +4,13 @@ import cn.iocoder.yudao.framework.common.pojo.PageResult; import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX; import cn.iocoder.yudao.framework.mybatis.core.query.LambdaQueryWrapperX; import cn.iocoder.yudao.module.promotion.controller.admin.point.vo.product.PointProductPageReqVO; -import cn.iocoder.yudao.module.promotion.dal.dataobject.pointproduct.PointProductDO; +import cn.iocoder.yudao.module.promotion.dal.dataobject.point.PointProductDO; +import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper; import org.apache.ibatis.annotations.Mapper; +import java.util.Collection; +import java.util.List; + /** * 积分商城商品 Mapper * @@ -20,13 +24,24 @@ public interface PointProductMapper extends BaseMapperX { .eqIfPresent(PointProductDO::getActivityId, reqVO.getActivityId()) .eqIfPresent(PointProductDO::getSpuId, reqVO.getSpuId()) .eqIfPresent(PointProductDO::getSkuId, reqVO.getSkuId()) - .eqIfPresent(PointProductDO::getMaxCount, reqVO.getMaxCount()) .eqIfPresent(PointProductDO::getPoint, reqVO.getPoint()) .eqIfPresent(PointProductDO::getPrice, reqVO.getPrice()) - .eqIfPresent(PointProductDO::getType, reqVO.getType()) .eqIfPresent(PointProductDO::getActivityStatus, reqVO.getActivityStatus()) .betweenIfPresent(PointProductDO::getCreateTime, reqVO.getCreateTime()) .orderByDesc(PointProductDO::getId)); } + default List selectListByActivityId(Collection activityIds) { + return selectList(PointProductDO::getActivityId, activityIds); + } + + default List selectListByActivityId(Long activityId) { + return selectList(PointProductDO::getActivityId, activityId); + } + + default void updateByActivityId(PointProductDO pointProductDO) { + update(pointProductDO, new LambdaUpdateWrapper() + .eq(PointProductDO::getActivityId, pointProductDO.getActivityId())); + } + } \ No newline at end of file diff --git a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/point/PointActivityService.java b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/point/PointActivityService.java index a9dac3eb8..b5240f479 100644 --- a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/point/PointActivityService.java +++ b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/point/PointActivityService.java @@ -28,6 +28,13 @@ public interface PointActivityService { */ void updatePointActivity(@Valid PointActivitySaveReqVO updateReqVO); + /** + * 关闭积分商城活动 + * + * @param id 编号 + */ + void closePointActivity(Long id); + /** * 删除积分商城活动 * diff --git a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/point/PointActivityServiceImpl.java b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/point/PointActivityServiceImpl.java index c1040a2e7..54b017de6 100644 --- a/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/point/PointActivityServiceImpl.java +++ b/yudao-module-mall/yudao-module-promotion-biz/src/main/java/cn/iocoder/yudao/module/promotion/service/point/PointActivityServiceImpl.java @@ -1,5 +1,7 @@ package cn.iocoder.yudao.module.promotion.service.point; +import cn.hutool.core.util.ObjectUtil; +import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum; import cn.iocoder.yudao.framework.common.pojo.PageResult; import cn.iocoder.yudao.framework.common.util.object.BeanUtils; import cn.iocoder.yudao.module.product.api.sku.ProductSkuApi; @@ -10,6 +12,7 @@ import cn.iocoder.yudao.module.promotion.controller.admin.point.vo.activity.Poin import cn.iocoder.yudao.module.promotion.controller.admin.point.vo.activity.PointActivitySaveReqVO; import cn.iocoder.yudao.module.promotion.controller.admin.point.vo.product.PointProductSaveReqVO; import cn.iocoder.yudao.module.promotion.dal.dataobject.point.PointActivityDO; +import cn.iocoder.yudao.module.promotion.dal.dataobject.point.PointProductDO; import cn.iocoder.yudao.module.promotion.dal.mysql.point.PointActivityMapper; import cn.iocoder.yudao.module.promotion.dal.mysql.point.PointProductMapper; import jakarta.annotation.Resource; @@ -19,15 +22,16 @@ import org.springframework.validation.annotation.Validated; import java.util.List; import java.util.Map; +import static cn.hutool.core.collection.CollUtil.intersectionDistinct; +import static cn.hutool.core.collection.CollUtil.isNotEmpty; import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception; -import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertMap; +import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.*; +import static cn.iocoder.yudao.framework.common.util.collection.MapUtils.findAndThen; import static cn.iocoder.yudao.module.product.enums.ErrorCodeConstants.SKU_NOT_EXISTS; import static cn.iocoder.yudao.module.product.enums.ErrorCodeConstants.SPU_NOT_EXISTS; -import static cn.iocoder.yudao.module.promotion.enums.ErrorCodeConstants.POINT_ACTIVITY_NOT_EXISTS; +import static cn.iocoder.yudao.module.promotion.enums.ErrorCodeConstants.*; import static java.util.Collections.singletonList; -// TODO @puhui999: 下次提交完善 - /** * 积分商城活动 Service 实现类 * @@ -47,13 +51,27 @@ public class PointActivityServiceImpl implements PointActivityService { @Resource private ProductSkuApi productSkuApi; + private static List buildPointProductDO(PointActivityDO pointActivity, List products) { + return BeanUtils.toBean(products, PointProductDO.class, product -> { + product.setActivityId(pointActivity.getId()).setActivityStatus(pointActivity.getStatus()); + }); + } + @Override public Long createPointActivity(PointActivitySaveReqVO createReqVO) { - // 1. 校验商品是否存在 + // 1.1 校验商品是否存在 validateProductExists(createReqVO.getSpuId(), createReqVO.getProducts()); - // 插入 - PointActivityDO pointActivity = BeanUtils.toBean(createReqVO, PointActivityDO.class); + // 1.2 校验商品是否已经参加别的活动 + validatePointActivityProductConflicts(null, createReqVO.getProducts()); + + // 2.1 插入积分商城活动 + PointActivityDO pointActivity = BeanUtils.toBean(createReqVO, PointActivityDO.class) + .setStatus(CommonStatusEnum.ENABLE.getStatus()) + .setStock(getSumValue(createReqVO.getProducts(), PointProductSaveReqVO::getStock, Integer::sum)); + pointActivity.setTotalStock(pointActivity.getStock()); pointActivityMapper.insert(pointActivity); + // 2.2 插入积分商城活动商品 + pointProductMapper.insertBatch(buildPointProductDO(pointActivity, createReqVO.getProducts())); // 返回 return pointActivity.getId(); } @@ -61,27 +79,92 @@ public class PointActivityServiceImpl implements PointActivityService { @Override public void updatePointActivity(PointActivitySaveReqVO updateReqVO) { // 1.1 校验存在 - validatePointActivityExists(updateReqVO.getId()); + PointActivityDO activity = validatePointActivityExists(updateReqVO.getId()); + if (CommonStatusEnum.DISABLE.getStatus().equals(activity.getStatus())) { + throw exception(POINT_ACTIVITY_UPDATE_FAIL_STATUS_CLOSED); + } // 1.2 校验商品是否存在 validateProductExists(updateReqVO.getSpuId(), updateReqVO.getProducts()); + // 1.3 校验商品是否已经参加别的活动 + validatePointActivityProductConflicts(updateReqVO.getId(), updateReqVO.getProducts()); + + // 2.1 更新积分商城活动 + PointActivityDO updateObj = BeanUtils.toBean(updateReqVO, PointActivityDO.class) + .setStock(getSumValue(updateReqVO.getProducts(), PointProductSaveReqVO::getStock, Integer::sum)); + if (updateObj.getStock() > activity.getTotalStock()) { // 如果更新的库存大于原来的库存，则更新总库存 + updateObj.setTotalStock(updateObj.getStock()); + } + pointActivityMapper.updateById(updateObj); + // 2.2 更新商品 + updateSeckillProduct(updateObj, updateReqVO.getProducts()); + } + + @Override + public void closePointActivity(Long id) { + // 校验存在 + PointActivityDO pointActivity = validatePointActivityExists(id); + if (CommonStatusEnum.DISABLE.getStatus().equals(pointActivity.getStatus())) { + throw exception(POINT_ACTIVITY_CLOSE_FAIL_STATUS_CLOSED); + } // 更新 - PointActivityDO updateObj = BeanUtils.toBean(updateReqVO, PointActivityDO.class); - pointActivityMapper.updateById(updateObj); + pointActivityMapper.updateById(new PointActivityDO().setId(id).setStatus(CommonStatusEnum.DISABLE.getStatus())); + // 更新活动商品状态 + pointProductMapper.updateByActivityId(new PointProductDO().setActivityId(id).setActivityStatus( + CommonStatusEnum.DISABLE.getStatus())); + } + + /** + * 更新秒杀商品 + * + * @param activity 秒杀活动 + * @param products 该活动的最新商品配置 + */ + private void updateSeckillProduct(PointActivityDO activity, List products) { + // 第一步，对比新老数据，获得添加、修改、删除的列表 + List newList = buildPointProductDO(activity, products); + List oldList = pointProductMapper.selectListByActivityId(activity.getId()); + List> diffList = diffList(oldList, newList, (oldVal, newVal) -> { + boolean same = ObjectUtil.equal(oldVal.getSkuId(), newVal.getSkuId()); + if (same) { + newVal.setId(oldVal.getId()); + } + return same; + }); + + // 第二步，批量添加、修改、删除 + if (isNotEmpty(diffList.get(0))) { + pointProductMapper.insertBatch(diffList.get(0)); + } + if (isNotEmpty(diffList.get(1))) { + pointProductMapper.updateBatch(diffList.get(1)); + } + if (isNotEmpty(diffList.get(2))) { + pointProductMapper.deleteByIds(convertList(diffList.get(2), PointProductDO::getId)); + } } @Override public void deletePointActivity(Long id) { // 校验存在 - validatePointActivityExists(id); - // 删除 + PointActivityDO pointActivity = validatePointActivityExists(id); + if (CommonStatusEnum.ENABLE.getStatus().equals(pointActivity.getStatus())) { + throw exception(POINT_ACTIVITY_DELETE_FAIL_STATUS_NOT_CLOSED_OR_END); + } + + // 删除商城活动 pointActivityMapper.deleteById(id); + // 删除活动商品 + List products = pointProductMapper.selectListByActivityId(id); + pointProductMapper.deleteByIds(convertSet(products, PointProductDO::getId)); } - private void validatePointActivityExists(Long id) { - if (pointActivityMapper.selectById(id) == null) { + private PointActivityDO validatePointActivityExists(Long id) { + PointActivityDO pointActivityDO = pointActivityMapper.selectById(id); + if (pointActivityDO == null) { throw exception(POINT_ACTIVITY_NOT_EXISTS); } + return pointActivityDO; } /** @@ -107,6 +190,35 @@ public class PointActivityServiceImpl implements PointActivityService { }); } + /** + * 校验商品是否冲突 + * + * @param id 编号 + * @param products 商品列表 + */ + private void validatePointActivityProductConflicts(Long id, List products) { + // 1.1 查询所有开启的积分商城活动 + List activityList = pointActivityMapper.selectList(PointActivityDO::getStatus, + CommonStatusEnum.ENABLE.getStatus()); + if (id != null) { // 更新时排除自己 + activityList.removeIf(item -> ObjectUtil.equal(item.getId(), id)); + } + // 1.2 查询活动下的所有商品 + List productList = pointProductMapper.selectListByActivityId( + convertList(activityList, PointActivityDO::getId)); + Map> productListMap = convertMultiMap(productList, PointProductDO::getActivityId); + + // 2. 校验商品是否冲突 + activityList.forEach(item -> { + findAndThen(productListMap, item.getId(), discountProducts -> { + if (!intersectionDistinct(convertList(discountProducts, PointProductDO::getSpuId), + convertList(products, PointProductSaveReqVO::getSpuId)).isEmpty()) { + throw exception(POINT_ACTIVITY_SPU_CONFLICTS); + } + }); + }); + } + @Override public PointActivityDO getPointActivity(Long id) { return pointActivityMapper.selectById(id);