feat: Refactor dataset file pagination and enhance retrieval functionality with new request structure #98

* feat: Enhance knowledge base management with collection renaming, imp…

* feat: Update Milvus integration with new API, enhance collection mana…

* Merge branch 'refs/heads/main' into dev

* feat: Refactor dataset file pagination and enhance retrieval function…

* Merge branch 'main' into dev

backend/shared/domain-common/src/main/java/com/datamate/common/infrastructure/exception/KnowledgeBaseErrorCode.java

@@ -16,7 +16,12 @@ public enum KnowledgeBaseErrorCode implements ErrorCode {
     /**
      * 知识库不存在
      */
-    KNOWLEDGE_BASE_NOT_FOUND("knowledge.0001", "知识库不存在");
+    KNOWLEDGE_BASE_NOT_FOUND("knowledge.0001", "知识库不存在"),
+
+    /**
+     * 文件不存在
+     */
+    RAG_FILE_NOT_FOUND("knowledge.0002", "文件不存在");
 
     private final String code;
     private final String message;

backend/shared/domain-common/src/main/java/com/datamate/common/interfaces/PagedResponse.java

@@ -1,6 +1,6 @@
 package com.datamate.common.interfaces;
 
-import lombok.AllArgsConstructor;
+import com.baomidou.mybatisplus.core.metadata.IPage;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
@@ -10,9 +10,8 @@ import java.util.List;
 @Getter
 @Setter
 @NoArgsConstructor
-@AllArgsConstructor
-public class PagedResponse <T> {
-    // 当前页码（从 0 开始）
+public class PagedResponse<T> {
+    // 当前页码（从 1 开始）
     private long page;
     // 每页数量
     private long size;
@@ -36,6 +35,14 @@ public class PagedResponse <T> {
         this.content = content;
     }
 
+    public PagedResponse(long page, long size, long totalElements, long totalPages, List<T> content) {
+        this.page = page;
+        this.size = size;
+        this.totalElements = totalElements;
+        this.totalPages = totalPages;
+        this.content = content;
+    }
+
     public static <T> PagedResponse<T> of(List<T> content) {
         return new PagedResponse<>(content);
     }
@@ -43,4 +50,8 @@ public class PagedResponse <T> {
     public static <T> PagedResponse<T> of(List<T> content, long page, long totalElements, long totalPages) {
         return new PagedResponse<>(content, page, totalElements, totalPages);
     }
+
+    public static <T> PagedResponse<T> of(IPage<T> page) {
+        return new PagedResponse<>(page.getCurrent(), page.getSize(), page.getTotal(), page.getPages(), page.getRecords());
+    }
 }

backend/shared/domain-common/src/main/java/com/datamate/common/interfaces/PagingQuery.java

@@ -1,8 +1,10 @@
 package com.datamate.common.interfaces;
 
 import lombok.Getter;
+import lombok.NoArgsConstructor;
 
 @Getter
+@NoArgsConstructor
 public class PagingQuery {
     /**
      * 页码，从0开始
@@ -28,4 +30,9 @@ public class PagingQuery {
             this.size = size;
         }
     }
+
+    public PagingQuery(Integer page, Integer size) {
+        setPage(page);
+        setSize(size);
+    }
 }