fix: 知识库文档管理搜索条件修改

chat-server/src/main/resources/com/bjtds/brichat/mapper/opengauss/TDatasetFilesMapper.xml

@@ -37,15 +37,21 @@
         FROM t_dataset_files
         WHERE dify_dataset_id = #{difyDatasetId}
         AND is_deleted = false
+        <choose>
+            <when test="fileName != null and fileName != ''">
+                <!-- 当 fileName 不为空时，忽略 parentId 条件 -->
+                AND name ILIKE CONCAT('%', #{fileName}, '%')
+            </when>
+            <otherwise>
+                <!-- 当 fileName 为空时，应用 parentId 条件 -->
                 <if test="parentId != null">
                     AND parent_id = #{parentId}
                 </if>
                 <if test="parentId == null">
                     AND parent_id IS NULL
                 </if>
-        <if test="fileName != null and fileName != ''">
-            AND name ILIKE CONCAT('%', #{fileName}, '%')
-        </if>
+            </otherwise>
+        </choose>
         <if test="orderBy != null and orderBy != ''">
             ORDER BY
             CASE WHEN type = 'folder' THEN 0 ELSE 1 END,
@@ -64,6 +70,9 @@
         </if>
     </select>
 
+
+
+
     <!-- 根据知识库id和parent_id 查询总数 -->
     <select id="countByDatasetIdAndParentId" resultType="int">
         SELECT COUNT(*)
@@ -81,6 +90,8 @@
         </if>
     </select>
 
+
+
     <!-- 根据知识库id和name查询 文件/文件夹 -->
     <select id="selectByDatasetIdAndName" resultMap="TDatasetFilesResultMap">
         SELECT <include refid="Base_Column_List"/>