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【代码修复】MALL：更新库存时，同时更新销量，和 taobao 保持一致的逻辑

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This commit is contained in:
YunaiV 2024-07-23 12:39:04 +08:00
parent a55ca87709
commit 714f0be547
2 changed files with 20 additions and 7 deletions
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13
yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/dal/mysql/sku/ProductSkuMapper.java
View File

@ -26,7 +26,7 @@ public interface ProductSkuMapper extends BaseMapperX<ProductSkuDO> {
} }
/** /**
* 更新 SKU 库存（增加） * 更新 SKU 库存（增加）、销量（减少）
* *
* @param id 编号 * @param id 编号
* @param incrCount 增加库存（正数） * @param incrCount 增加库存（正数）
@ -34,13 +34,14 @@ public interface ProductSkuMapper extends BaseMapperX<ProductSkuDO> {
default void updateStockIncr(Long id, Integer incrCount) { default void updateStockIncr(Long id, Integer incrCount) {
Assert.isTrue(incrCount > 0); Assert.isTrue(incrCount > 0);
LambdaUpdateWrapper<ProductSkuDO> lambdaUpdateWrapper = new LambdaUpdateWrapper<ProductSkuDO>() LambdaUpdateWrapper<ProductSkuDO> lambdaUpdateWrapper = new LambdaUpdateWrapper<ProductSkuDO>()
.setSql(" stock = stock + " + incrCount) .setSql(" stock = stock + " + incrCount
+ ", sales_count = sales_count - " + incrCount)
.eq(ProductSkuDO::getId, id); .eq(ProductSkuDO::getId, id);
update(null, lambdaUpdateWrapper); update(null, lambdaUpdateWrapper);
} }
/** /**
* 更新 SKU 库存（减少） * 更新 SKU 库存（减少）、销量（增加）
* *
* @param id 编号 * @param id 编号
* @param incrCount 减少库存（负数） * @param incrCount 减少库存（负数）
@ -48,10 +49,12 @@ public interface ProductSkuMapper extends BaseMapperX<ProductSkuDO> {
*/ */
default int updateStockDecr(Long id, Integer incrCount) { default int updateStockDecr(Long id, Integer incrCount) {
Assert.isTrue(incrCount < 0); Assert.isTrue(incrCount < 0);
incrCount = - incrCount; // 取正
LambdaUpdateWrapper<ProductSkuDO> updateWrapper = new LambdaUpdateWrapper<ProductSkuDO>() LambdaUpdateWrapper<ProductSkuDO> updateWrapper = new LambdaUpdateWrapper<ProductSkuDO>()
.setSql(" stock = stock + " + incrCount) // 负数，所以使用 + 号 .setSql(" stock = stock - " + incrCount
+ ", sales_count = sales_count + " + incrCount)
.eq(ProductSkuDO::getId, id) .eq(ProductSkuDO::getId, id)
.ge(ProductSkuDO::getStock, -incrCount); // cas 逻辑 .ge(ProductSkuDO::getStock, incrCount);
return update(null, updateWrapper); return update(null, updateWrapper);
} }

14
yudao-module-mall/yudao-module-product-biz/src/main/java/cn/iocoder/yudao/module/product/dal/mysql/spu/ProductSpuMapper.java
View File

@ -85,9 +85,19 @@ public interface ProductSpuMapper extends BaseMapperX<ProductSpuDO> {
* @param incrCount 增加的库存数量 * @param incrCount 增加的库存数量
*/ */
default void updateStock(Long id, Integer incrCount) { default void updateStock(Long id, Integer incrCount) {
// 拼接 SQL
if (incrCount == 0) {
return;
}
String sql;
if (incrCount > 0) {
sql = " stock = stock + " + incrCount + ", sales_count = sales_count - " + incrCount;
} else {
sql = " stock = stock - " + Math.abs(incrCount) + ", sales_count = sales_count + " + Math.abs(incrCount);
}
// 执行更新
LambdaUpdateWrapper<ProductSpuDO> updateWrapper = new LambdaUpdateWrapper<ProductSpuDO>() LambdaUpdateWrapper<ProductSpuDO> updateWrapper = new LambdaUpdateWrapper<ProductSpuDO>()
// 负数，所以使用 + 号 .setSql(sql)
.setSql(" stock = stock +" + incrCount)
.eq(ProductSpuDO::getId, id); .eq(ProductSpuDO::getId, id);
update(null, updateWrapper); update(null, updateWrapper);
} }