feature: Implement the basic knowledge generation function (#40)

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

@@ -12,7 +12,9 @@ import java.util.List;
 @NoArgsConstructor
 @AllArgsConstructor
 public class PagedResponse <T> {
+    // 当前页码（从 0 开始）
     private long page;
+    // 每页数量
     private long size;
     private long totalElements;
     private long totalPages;

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

@@ -1,14 +1,8 @@
 package com.datamate.common.interfaces;
 
-import lombok.AllArgsConstructor;
 import lombok.Getter;
-import lombok.NoArgsConstructor;
-import lombok.Setter;
 
 @Getter
-@Setter
-@NoArgsConstructor
-@AllArgsConstructor
 public class PagingQuery {
     /**
      * 页码，从0开始
@@ -19,4 +13,19 @@ public class PagingQuery {
      * 每页大小
      */
     private Integer size = 20;
+
+    public void setPage(Integer page) {
+        if (page == null || page < 0) {
+            this.page = 0;
+        } else {
+            this.page = page;
+        }
+    }
+    public void setSize(Integer size) {
+        if (size == null || size <= 0) {
+            this.size = 20;
+        } else {
+            this.size = size;
+        }
+    }
 }