feature: add categories field to operator and update mapping logic

Author: hhhhsc701

backend/openapi/specs/operator-market.yaml

@@ -490,6 +490,11 @@ components:
         outputs:
           type: string
           description: 输入类型
+        categories:
+          type: array
+          description: 算子分类列表
+          items:
+            type: integer
         runtime:
           type: string
           description: 运行时设置

backend/services/operator-market-service/src/main/java/com/dataengine/operator/domain/converter/OperatorConverter.java

@@ -3,11 +3,26 @@
 import com.dataengine.operator.domain.modal.Operator;
 import com.dataengine.operator.interfaces.dto.OperatorResponse;
 import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.Named;
 import org.mapstruct.factory.Mappers;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
 @Mapper
 public interface OperatorConverter {
     OperatorConverter INSTANCE = Mappers.getMapper(OperatorConverter.class);
 
+    @Mapping(target = "categories", source = "categories", qualifiedByName = "stringToList")
     OperatorResponse operatorToResponse(Operator operator);
+
+    @Named("stringToList")
+    static List<Integer> stringToList(String input) {
+        if (input == null || input.isEmpty()) {
+            return Collections.emptyList();
+        }
+        return Arrays.stream(input.split(",")).map(Integer::valueOf).toList();
+    }
 }

backend/services/operator-market-service/src/main/java/com/dataengine/operator/domain/modal/Operator.java

@@ -20,6 +20,8 @@ public class Operator {
 
     private String outputs;
 
+    private String categories;
+
     private String runtime;
 
     private String settings;

backend/services/operator-market-service/src/main/resources/mappers/OperatorMapper.xml

@@ -9,14 +9,7 @@
 
     <select id="findOperatorsByCriteria" parameterType="map" resultType="com.dataengine.operator.domain.modal.Operator">
         SELECT operator_id as id, operator_name as name, description, version, inputs, outputs, runtime, settings,
-            is_star, created_at, updated_at
-        FROM
-        (
-            SELECT operator_id, operator_name, description, version, inputs, outputs, runtime, settings, is_star,
-                created_at, updated_at, ROW_NUMBER() OVER (
-            PARTITION BY operator_id -- 按 id 分组
-            ORDER BY created_at DESC -- 按创建时间降序排列 (最新时间在前)
-        ) AS rn -- 为每组内的行分配序号
+            is_star, created_at, updated_at, GROUP_CONCAT(category_id ORDER BY created_at DESC SEPARATOR ',') AS categories
         FROM v_operator
         <where>
             <if test="operatorName != null and operatorName != ''">
@@ -32,8 +25,7 @@
                 AND is_star = #{isStar}
             </if>
         </where>
-        ) ranked_data
-        WHERE rn = 1
+        GROUP BY operator_id
         LIMIT ${size} OFFSET ${offset};
     </select>
 </mapper>