feat: 新增了按类查找知识和详细知识的接口，修复了一些bug

fix list：
- getKnowledgeBrief不会筛选null父节点
- createNewKnowledgeFolder无法工作

src/main/kotlin/cn/edu/hfut/auto/knowledge/controller/KnowledgeController.kt

@@ -48,6 +48,20 @@ class KnowledgeController(
         return knowledgeRepository.findNullable(knowledgeId, Knowledge.AS_PARENT_FETCHER) ?: throw BusinessError(ErrorCode.RESOURCE_NOT_FOUND)
     }
 
+    @GetMapping("/{knowledgeId}/detailed")
+    suspend fun getKnowledgeDetailed(@PathVariable knowledgeId: UUID): Knowledge {
+        val knowledge = knowledgeRepository.findNullable(knowledgeId, Knowledge.DETAILED_FILE_FETCHER)
+            ?: throw BusinessError(ErrorCode.RESOURCE_NOT_FOUND)
+        val knowledgeFileAttribute = knowledge.knowledgeFileAttribute ?: throw BusinessError(ErrorCode.RESOURCE_NOT_FOUND)
+        knowledgeRepository.update(new(Knowledge::class).by {
+            id = knowledge.id
+            knowledgeFileAttribute().apply {
+                pageView = knowledgeFileAttribute.pageView + 1
+            }
+        })
+        return knowledge
+    }
+
     @SaCheckRole("1")
     @Transactional(rollbackFor = [Throwable::class])
     @PostMapping("/file")

src/main/kotlin/cn/edu/hfut/auto/knowledge/entity/Knowledge.kt

@@ -30,6 +30,10 @@ interface Knowledge {
             allScalarFields()
             knowledgeFileAttribute(KnowledgeFileAttribute.BRIEF_FETCHER)
         }
+        val DETAILED_FILE_FETCHER = newFetcher(Knowledge::class).by {
+            allScalarFields()
+            knowledgeFileAttribute(KnowledgeFileAttribute.DETAILED_FETCHER)
+        }
         val AS_PARENT_FETCHER = newFetcher(Knowledge::class).by {
             allScalarFields()
             parent()

src/main/kotlin/cn/edu/hfut/auto/knowledge/entity/KnowledgeFileAttribute.kt

@@ -34,9 +34,13 @@ interface KnowledgeFileAttribute {
         val EXTERNAL_PREVIEWABLE_SUFFIXES = listOf("pdf", "ppt", "pptx", "doc", "docx", "xls", "xlsx")
         val BRIEF_FETCHER = newFetcher(KnowledgeFileAttribute::class).by {
             allScalarFields()
-            tags {
+            tags(Tag.ALL_FETCHER)
-                allScalarFields()
         }
+        val DETAILED_FETCHER = newFetcher(KnowledgeFileAttribute::class).by {
+            allScalarFields()
+            starers()
+            notes(Note.BRIEF_FETCHER)
+            tags(Tag.ALL_FETCHER)
         }
     }
 

src/main/kotlin/cn/edu/hfut/auto/knowledge/entity/Note.kt

@@ -1,6 +1,7 @@
 package cn.edu.hfut.auto.knowledge.entity
 
 import org.babyfish.jimmer.sql.*
+import org.babyfish.jimmer.sql.kt.fetcher.newFetcher
 import org.babyfish.jimmer.sql.meta.UUIDIdGenerator
 import java.time.LocalDateTime
 import java.util.*
@@ -36,4 +37,14 @@ interface Note {
     @ManyToMany
     @JoinTable(name = "note_liker_mapping")
     val likers: List<User>
+
+    companion object {
+        val BRIEF_FETCHER = newFetcher(Note::class).by {
+            allScalarFields()
+            author(User.BRIEF_FETCHER)
+            tags(Tag.ALL_FETCHER)
+            starers()
+            likers()
+        }
+    }
 }

src/main/kotlin/cn/edu/hfut/auto/knowledge/entity/Tag.kt

@@ -4,6 +4,7 @@ import org.babyfish.jimmer.sql.Entity
 import org.babyfish.jimmer.sql.GeneratedValue
 import org.babyfish.jimmer.sql.GenerationType
 import org.babyfish.jimmer.sql.Id
+import org.babyfish.jimmer.sql.kt.fetcher.newFetcher
 
 @Entity
 interface Tag {
@@ -11,4 +12,10 @@ interface Tag {
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     val id: Long
     val name: String
+
+    companion object {
+        val ALL_FETCHER = newFetcher(Tag::class).by {
+            allScalarFields()
+        }
+    }
 }