项目类型修改

src/main/java/com/huiju/estateagents/controller/TdBuildingTypeController.java

 import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.huiju.estateagents.base.ResponseBean;
+import com.huiju.estateagents.entity.TaBuilding;
 import com.huiju.estateagents.entity.TdBuildingType;
+import com.huiju.estateagents.exception.EstaException;
+import com.huiju.estateagents.mapper.TaBuildingMapper;
+import com.huiju.estateagents.service.ITaBuildingService;
 import com.huiju.estateagents.service.ITdBuildingTypeService;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiImplicitParam;
 import io.swagger.annotations.ApiImplicitParams;
 import io.swagger.annotations.ApiOperation;
+import org.apache.commons.collections4.CollectionUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import com.huiju.estateagents.base.BaseController;
 
 import javax.servlet.http.HttpServletRequest;
+import java.util.List;
+import java.util.stream.Collectors;
 
 /**
  * <p>
     @Autowired
     public ITdBuildingTypeService iTdBuildingTypeService;
 
+    @Autowired
+    public TaBuildingMapper taBuildingMapper;
 
     /**
      * 分页查询列表
                                              HttpServletRequest request){
         ResponseBean responseBean = new ResponseBean();
         try {
+
+            // 如果是删除，状态为 -1
+            if ( null != tdBuildingType.getStatus() && -1 == tdBuildingType.getStatus().intValue()) {
+                List<TaBuilding> taBuildings = taBuildingMapper.selectBuildingByBuildingTypeId(tdBuildingType.getBuildingTypeId());
+                if (CollectionUtils.isNotEmpty(taBuildings)) {
+                    String buildingNames = taBuildings.stream().map(e -> e.getBuildingName()).collect(Collectors.joining(","));
+                    throw new EstaException("项目 " + buildingNames + " 正在使用此类型，请先到项目列表中修改项目的项目类型为其他类型，再删除此类型");
+                }
+            }
+
             tdBuildingType.setOrgId(getOrgId(request));
             if (iTdBuildingTypeService.updateById(tdBuildingType)){
                 responseBean.addSuccess(tdBuildingType);

src/main/java/com/huiju/estateagents/mapper/TaBuildingMapper.java

                                          @Param("areaList") List<String[]> areaList,
                                          @Param("orgId")Integer orgId);
 
+    /**
+     * 根据项目类型Id 查询
+     * @param buildingTypeId
+     * @return
+     */
+    List<TaBuilding> selectBuildingByBuildingTypeId(Integer buildingTypeId);
+
 }

src/main/resources/mapper/TaBuildingMapper.xml

             ORDER BY tb.order_no DESC
     </select>
 
+    <select id="selectBuildingByBuildingTypeId" resultType="com.huiju.estateagents.entity.TaBuilding">
+
+        SELECT
+            tab.*
+        FROM
+            ta_building_project_type tbpt
+            LEFT JOIN td_building_type tbt ON tbpt.building_type_id = tbt.building_type_id
+            LEFT JOIN ta_building tab ON tbpt.building_id = tab.building_id
+        WHERE
+          tab.status <![CDATA[ > ]]> -1
+        and
+          tbpt.building_type_id = #{buildingTypeId}
+
+    </select>
+
 </mapper>