feat：【IoT 物联网】新增产品删除失败错误码，优化产品删除逻辑以防止删除存在设备的产品

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/enums/ErrorCodeConstants.java

@@ -14,6 +14,7 @@ public interface ErrorCodeConstants {
     ErrorCode PRODUCT_KEY_EXISTS = new ErrorCode(1_050_001_001, "产品标识已经存在");
     ErrorCode PRODUCT_STATUS_NOT_DELETE = new ErrorCode(1_050_001_002, "产品状是发布状态，不允许删除");
     ErrorCode PRODUCT_STATUS_NOT_ALLOW_THING_MODEL = new ErrorCode(1_050_001_003, "产品状是发布状态，不允许操作物模型");
+    ErrorCode PRODUCT_DELETE_FAIL_HAS_DEVICE = new ErrorCode(1_050_001_004, "产品下存在设备，不允许删除");
 
     // ========== 产品物模型 1-050-002-000 ============
     ErrorCode THING_MODEL_NOT_EXISTS = new ErrorCode(1_050_002_000, "产品物模型不存在");

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/device/IotDeviceServiceImpl.java

@@ -56,6 +56,7 @@ public class IotDeviceServiceImpl implements IotDeviceService {
     private IotDeviceMapper deviceMapper;
 
     @Resource
+    @Lazy  // 延迟加载，解决循环依赖
     private IotProductService productService;
     @Resource
     @Lazy // 延迟加载，解决循环依赖

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/device/property/IotDevicePropertyServiceImpl.java

@@ -23,6 +23,7 @@ import cn.iocoder.yudao.module.iot.service.product.IotProductService;
 import cn.iocoder.yudao.module.iot.service.thingmodel.IotThingModelService;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Service;
 
@@ -58,6 +59,7 @@ public class IotDevicePropertyServiceImpl implements IotDevicePropertyService {
     @Resource
     private IotThingModelService thingModelService;
     @Resource
+    @Lazy  // 延迟加载，解决循环依赖
     private IotProductService productService;
 
     @Resource

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/product/IotProductServiceImpl.java

@@ -10,12 +10,12 @@ import cn.iocoder.yudao.module.iot.dal.dataobject.product.IotProductDO;
 import cn.iocoder.yudao.module.iot.dal.mysql.product.IotProductMapper;
 import cn.iocoder.yudao.module.iot.dal.redis.RedisKeyConstants;
 import cn.iocoder.yudao.module.iot.enums.product.IotProductStatusEnum;
+import cn.iocoder.yudao.module.iot.service.device.IotDeviceService;
 import cn.iocoder.yudao.module.iot.service.device.property.IotDevicePropertyService;
 import com.baomidou.dynamic.datasource.annotation.DSTransactional;
 import jakarta.annotation.Resource;
 import org.springframework.cache.annotation.CacheEvict;
 import org.springframework.cache.annotation.Cacheable;
-import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
 import org.springframework.validation.annotation.Validated;
 
@@ -40,8 +40,9 @@ public class IotProductServiceImpl implements IotProductService {
     private IotProductMapper productMapper;
 
     @Resource
-    @Lazy  // 延迟加载，解决循环依赖
     private IotDevicePropertyService devicePropertyDataService;
+    @Resource
+    private IotDeviceService deviceService;
 
     @Override
     public Long createProduct(IotProductSaveReqVO createReqVO) {
@@ -65,6 +66,7 @@ public class IotProductServiceImpl implements IotProductService {
         IotProductDO iotProductDO = validateProductExists(updateReqVO.getId());
         // 1.2 发布状态不可更新
         validateProductStatus(iotProductDO);
+
         // 2. 更新
         IotProductDO updateObj = BeanUtils.toBean(updateReqVO, IotProductDO.class);
         productMapper.updateById(updateObj);
@@ -74,9 +76,14 @@ public class IotProductServiceImpl implements IotProductService {
     @CacheEvict(value = RedisKeyConstants.PRODUCT, key = "#id")
     public void deleteProduct(Long id) {
         // 1.1 校验存在
-        IotProductDO iotProductDO = validateProductExists(id);
+        IotProductDO product = validateProductExists(id);
         // 1.2 发布状态不可删除
-        validateProductStatus(iotProductDO);
+        validateProductStatus(product);
+        // 1.3 校验是否有设备
+        if (deviceService.getDeviceCountByProductId(id) > 0) {
+            throw exception(PRODUCT_DELETE_FAIL_HAS_DEVICE);
+        }
+
         // 2. 删除
         productMapper.deleteById(id);
     }

yudao-module-iot/yudao-module-iot-biz/src/main/java/cn/iocoder/yudao/module/iot/service/thingmodel/IotThingModelServiceImpl.java

@@ -20,6 +20,7 @@ import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.cache.annotation.CacheEvict;
 import org.springframework.cache.annotation.Cacheable;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.validation.annotation.Validated;
@@ -47,6 +48,7 @@ public class IotThingModelServiceImpl implements IotThingModelService {
     private IotThingModelMapper thingModelMapper;
 
     @Resource
+    @Lazy // 延迟加载，解决循环依赖
     private IotProductService productService;
 
     @Override