학습 상세조회 데이터셋 수정

src/main/java/com/kamco/cd/training/model/dto/ModelTrainDetailDto.java

@@ -163,11 +163,12 @@ public class ModelTrainDetailDto {
       this.compareYyyy = compareYyyy;
       this.targetYyyy = targetYyyy;
       this.roundNo = roundNo;
-      this.buildingCnt = buildingCnt;
-      this.containerCnt = containerCnt;
-      this.wasteCnt = wasteCnt;
-      this.landCoverCnt = landCoverCnt;
-      this.solarPanelCnt = solarPanelCnt;
+      this.buildingCnt = toNullIfZero(buildingCnt);
+      this.containerCnt = toNullIfZero(containerCnt);
+      this.wasteCnt = toNullIfZero(wasteCnt);
+      this.landCoverCnt = toNullIfZero(landCoverCnt);
+      this.solarPanelCnt = toNullIfZero(solarPanelCnt);
+
       this.dataTypeName = getDataTypeName(this.dataType);
     }
 
@@ -177,6 +178,10 @@ public class ModelTrainDetailDto {
     }
   }
 
+  private static Long toNullIfZero(Long value) {
+    return (value == null || value == 0L) ? null : value;
+  }
+
   @Getter
   @Setter
   @NoArgsConstructor