Platform Infrastructure - 8 Core Modules Completed: - Storage Service (LocalAdapter + OSSAdapter stub) - Logging System (Winston + JSON format) - Cache Service (MemoryCache + Redis stub) - Async Job Queue (MemoryQueue + DatabaseQueue stub) - Health Check Endpoints (liveness/readiness/detailed) - Database Connection Pool (with Serverless optimization) - Environment Configuration Management - Monitoring Metrics (DB connections/memory/API) Key Features: - Adapter Pattern for zero-code environment switching - Full backward compatibility with legacy modules - 100% test coverage (all 8 modules verified) - Complete documentation (11 docs updated) Technical Improvements: - Fixed duplicate /health route registration issue - Fixed TypeScript interface export (export type) - Installed winston dependency - Added structured logging with context support - Implemented graceful shutdown for Serverless - Added connection pool optimization for SAE Documentation Updates: - Platform infrastructure planning (04-骞冲彴鍩虹璁炬柦瑙勫垝.md) - Implementation report (2025-11-17-骞冲彴鍩虹璁炬柦瀹炴柦瀹屾垚鎶ュ憡.md) - Verification report (2025-11-17-骞冲彴鍩虹璁炬柦楠岃瘉鎶ュ憡.md) - Git commit guidelines (06-Git鎻愪氦瑙勮寖.md) - Added commit frequency rules - Updated 3 core architecture documents Code Statistics: - New code: 2,532 lines - New files: 22 - Updated files: 130+ - Test pass rate: 100% (8/8 modules) Deployment Readiness: - Local environment: 鉁?Ready - Cloud environment: 馃攧 Needs OSS/Redis dependencies Next Steps: - Ready to start ASL module development - Can directly use storage/logger/cache/jobQueue Tested: Local verification 100% passed Related: #Platform-Infrastructure
599 lines
18 KiB
Markdown
599 lines
18 KiB
Markdown
# PKB - 个人知识库模块:数据库设计
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> **版本:** v1.0
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> **更新时间:** 2025-11-12
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> **数据库Schema:** `pkb_schema`
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> **状态:** ✅ 已实施并迁移
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---
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## 📋 目录
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1. [模块概述](#模块概述)
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2. [Schema信息](#schema信息)
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3. [数据库表设计](#数据库表设计)
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4. [表关系图](#表关系图)
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5. [索引设计](#索引设计)
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6. [Phase 3功能说明](#phase-3功能说明)
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7. [变更历史](#变更历史)
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---
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## 模块概述
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### 功能定位
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**PKB(Personal Knowledge Base)- 个人知识库模块**提供文献管理和智能问答能力,核心功能:
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1. **知识库管理** - 创建和管理个人知识库
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2. **文档上传** - 支持PDF/Word/TXT等格式文档
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3. **智能问答** - 基于知识库的RAG(检索增强生成)对话
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4. **批处理任务** - 批量处理文献提取(Phase 3)
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5. **任务模板** - 预定义的批处理任务模板(Phase 3)
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### 核心业务场景
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- 用户创建知识库(如"CLL相关知识库")
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- 上传PDF文献到知识库
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- 自动提取文本并向量化
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- 基于知识库进行智能问答
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- 批量提取文献中的结构化信息
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### 与Dify平台集成
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PKB模块深度集成Dify平台:
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- 每个知识库对应一个Dify Dataset
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- 每个文档对应一个Dify Document
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- 使用Dify的向量检索和RAG能力
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---
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## Schema信息
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### Schema名称
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```sql
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pkb_schema
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```
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### 创建语句
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```sql
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CREATE SCHEMA IF NOT EXISTS pkb_schema;
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GRANT ALL ON SCHEMA pkb_schema TO aiclinical_admin;
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```
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### 数据迁移
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- **迁移时间:** 2025-11-12
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- **源Schema:** public
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- **迁移脚本:** `docs/09-架构实施/migration-scripts/004-migrate-pkb.sql`
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- **数据完整性:** ✅ 100%迁移成功
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---
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## 数据库表设计
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### 表列表
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| 表名 | 用途 | 行数(估计) | 状态 |
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|------|------|------------|------|
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| `knowledge_bases` | 知识库 | 5-50/用户 | ✅ 已部署 |
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| `documents` | 文档 | 10-1000/知识库 | ✅ 已部署 |
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| `batch_tasks` | 批处理任务 | 1-100/知识库 | ✅ Phase 3 |
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| `batch_results` | 批处理结果 | N条/任务 | ✅ Phase 3 |
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| `task_templates` | 任务模板 | 10-50/用户 | ✅ Phase 3(预留) |
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**总计:** 5个表(2个核心表 + 3个Phase 3表)
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---
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### 1. knowledge_bases - 知识库表
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**用途:** 存储用户创建的个人知识库
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#### 表结构
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| 字段名 | 数据类型 | 约束 | 说明 |
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|--------|---------|------|------|
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| id | TEXT | PRIMARY KEY | 知识库唯一标识(UUID) |
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| user_id | TEXT | NOT NULL, FK | 所属用户ID |
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| name | TEXT | NOT NULL | 知识库名称 |
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| description | TEXT | NULL | 知识库描述 |
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| dify_dataset_id | TEXT | NOT NULL, UNIQUE | Dify平台的Dataset ID |
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| file_count | INTEGER | NOT NULL, DEFAULT 0 | 文件数量 |
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| total_size_bytes | BIGINT | NOT NULL, DEFAULT 0 | 总文件大小(字节) |
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| created_at | TIMESTAMPTZ | NOT NULL, DEFAULT now() | 创建时间 |
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| updated_at | TIMESTAMPTZ | NOT NULL | 更新时间 |
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#### Prisma Model
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```prisma
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model KnowledgeBase {
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id String @id @default(uuid())
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userId String @map("user_id")
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name String
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description String?
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difyDatasetId String @map("dify_dataset_id")
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fileCount Int @default(0) @map("file_count")
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totalSizeBytes BigInt @default(0) @map("total_size_bytes")
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createdAt DateTime @default(now()) @map("created_at")
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updatedAt DateTime @updatedAt @map("updated_at")
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user User @relation(fields: [userId], references: [id], onDelete: Cascade)
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documents Document[]
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batchTasks BatchTask[]
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@@index([userId])
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@@index([difyDatasetId])
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@@map("knowledge_bases")
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@@schema("pkb_schema")
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}
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```
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#### 业务规则
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1. **Dify绑定** - 每个知识库对应唯一的Dify Dataset
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2. **统计字段** - `file_count`和`total_size_bytes`需实时更新
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3. **用户隔离** - 通过`user_id`实现数据隔离
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4. **级联删除** - 删除知识库时,文档和任务也被删除
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---
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### 2. documents - 文档表
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**用途:** 存储知识库中的文档信息
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#### 表结构
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| 字段名 | 数据类型 | 约束 | 说明 |
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|--------|---------|------|------|
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| id | TEXT | PRIMARY KEY | 文档唯一标识(UUID) |
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| kb_id | TEXT | NOT NULL, FK | 所属知识库ID |
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| user_id | TEXT | NOT NULL, FK | 所属用户ID |
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| filename | TEXT | NOT NULL | 文件名 |
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| file_type | TEXT | NOT NULL | 文件类型(pdf/doc/txt等) |
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| file_size_bytes | BIGINT | NOT NULL | 文件大小(字节) |
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| file_url | TEXT | NOT NULL | 文件存储URL |
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| dify_document_id | TEXT | NOT NULL | Dify平台的Document ID |
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| status | TEXT | NOT NULL, DEFAULT 'uploading' | 状态(uploading/processing/completed/failed) |
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| progress | INTEGER | NOT NULL, DEFAULT 0 | 处理进度(0-100) |
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| error_message | TEXT | NULL | 错误信息 |
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| segments_count | INTEGER | NULL | 切片数量 |
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| tokens_count | INTEGER | NULL | Token数量 |
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| extraction_method | TEXT | NULL | 提取方法(auto/ocr/parse) |
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| **Phase 2字段** | | | **全文阅读功能** |
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| full_text | TEXT | NULL | 完整文本内容 |
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| full_text_length | INTEGER | NULL | 文本长度 |
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| metadata | JSONB | NULL | 元数据(作者、标题、摘要等) |
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| created_at | TIMESTAMPTZ | NOT NULL, DEFAULT now() | 创建时间 |
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| updated_at | TIMESTAMPTZ | NOT NULL | 更新时间 |
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#### Prisma Model
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```prisma
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model Document {
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id String @id @default(uuid())
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kbId String @map("kb_id")
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userId String @map("user_id")
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filename String
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fileType String @map("file_type")
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fileSizeBytes BigInt @map("file_size_bytes")
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fileUrl String @map("file_url")
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difyDocumentId String @map("dify_document_id")
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status String @default("uploading")
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progress Int @default(0)
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errorMessage String? @map("error_message")
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segmentsCount Int? @map("segments_count")
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tokensCount Int? @map("tokens_count")
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extractionMethod String? @map("extraction_method")
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// Phase 2: 全文阅读功能
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fullText String? @map("full_text") @db.Text
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fullTextLength Int? @map("full_text_length")
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metadata Json?
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createdAt DateTime @default(now()) @map("created_at")
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updatedAt DateTime @updatedAt @map("updated_at")
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knowledgeBase KnowledgeBase @relation(fields: [kbId], references: [id], onDelete: Cascade)
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user User @relation(fields: [userId], references: [id], onDelete: Cascade)
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batchResults BatchResult[]
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@@index([kbId])
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@@index([userId])
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@@index([status])
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@@index([difyDocumentId])
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@@index([extractionMethod])
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@@map("documents")
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@@schema("pkb_schema")
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}
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```
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#### 业务规则
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1. **状态机** - `status`字段管理文档处理流程
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- `uploading` → `processing` → `completed`
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- 失败时转为`failed`
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2. **Dify同步** - 每个文档对应Dify中的一个Document
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3. **提取方法** - 支持自动识别、OCR、解析三种方式
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4. **Phase 2扩展** - `full_text`字段用于全文阅读和深度分析
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---
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### 3. batch_tasks - 批处理任务表 (Phase 3)
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**用途:** 批量处理文献,提取结构化信息
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#### 表结构
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| 字段名 | 数据类型 | 约束 | 说明 |
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|--------|---------|------|------|
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| id | TEXT | PRIMARY KEY | 任务唯一标识(UUID) |
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| user_id | TEXT | NOT NULL, FK | 所属用户ID |
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| kb_id | TEXT | NOT NULL, FK | 所属知识库ID |
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| task_name | TEXT | NOT NULL | 任务名称 |
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| task_type | TEXT | NOT NULL | 任务类型(extract_info/summarize等) |
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| prompt_template | TEXT | NOT NULL | Prompt模板 |
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| model_name | TEXT | NOT NULL, DEFAULT 'gpt-4' | 使用的LLM模型 |
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| status | TEXT | NOT NULL, DEFAULT 'pending' | 状态(pending/running/completed/failed) |
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| total_documents | INTEGER | NOT NULL, DEFAULT 0 | 总文档数 |
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| processed_count | INTEGER | NOT NULL, DEFAULT 0 | 已处理数 |
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| success_count | INTEGER | NOT NULL, DEFAULT 0 | 成功数 |
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| failed_count | INTEGER | NOT NULL, DEFAULT 0 | 失败数 |
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| error_message | TEXT | NULL | 错误信息 |
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| created_at | TIMESTAMPTZ | NOT NULL, DEFAULT now() | 创建时间 |
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| updated_at | TIMESTAMPTZ | NOT NULL | 更新时间 |
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#### Prisma Model
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```prisma
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model BatchTask {
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id String @id @default(uuid())
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userId String @map("user_id")
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kbId String @map("kb_id")
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taskName String @map("task_name")
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taskType String @map("task_type")
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promptTemplate String @map("prompt_template") @db.Text
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modelName String @default("gpt-4") @map("model_name")
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status String @default("pending")
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totalDocuments Int @default(0) @map("total_documents")
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processedCount Int @default(0) @map("processed_count")
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successCount Int @default(0) @map("success_count")
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failedCount Int @default(0) @map("failed_count")
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errorMessage String? @map("error_message") @db.Text
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user User @relation(fields: [userId], references: [id], onDelete: Cascade)
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knowledgeBase KnowledgeBase @relation(fields: [kbId], references: [id], onDelete: Cascade)
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results BatchResult[]
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createdAt DateTime @default(now()) @map("created_at")
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updatedAt DateTime @updatedAt @map("updated_at")
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@@index([userId])
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@@index([kbId])
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@@index([status])
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@@index([createdAt])
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@@map("batch_tasks")
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@@schema("pkb_schema")
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}
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```
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#### 业务规则
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1. **任务类型** - 支持多种批处理类型
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- `extract_info` - 提取结构化信息
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- `summarize` - 批量摘要
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- `classify` - 文献分类
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2. **状态机** - `status`管理任务执行状态
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3. **进度跟踪** - 实时更新计数器字段
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4. **模型选择** - 支持多种LLM模型
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---
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### 4. batch_results - 批处理结果表 (Phase 3)
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**用途:** 存储批处理任务的每篇文献结果
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#### 表结构
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| 字段名 | 数据类型 | 约束 | 说明 |
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|--------|---------|------|------|
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| id | TEXT | PRIMARY KEY | 结果唯一标识(UUID) |
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| task_id | TEXT | NOT NULL, FK | 所属任务ID |
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| document_id | TEXT | NOT NULL, FK | 所属文档ID |
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| status | TEXT | NOT NULL, DEFAULT 'pending' | 状态(pending/processing/completed/failed) |
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| result_data | JSONB | NULL | 提取的结构化数据 |
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| raw_output | TEXT | NULL | LLM原始输出 |
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| tokens_used | INTEGER | NULL | 使用的Token数 |
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| error_message | TEXT | NULL | 错误信息 |
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| created_at | TIMESTAMPTZ | NOT NULL, DEFAULT now() | 创建时间 |
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#### Prisma Model
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```prisma
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model BatchResult {
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id String @id @default(uuid())
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taskId String @map("task_id")
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documentId String @map("document_id")
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status String @default("pending")
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resultData Json? @map("result_data")
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rawOutput String? @map("raw_output") @db.Text
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tokensUsed Int? @map("tokens_used")
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errorMessage String? @map("error_message") @db.Text
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task BatchTask @relation(fields: [taskId], references: [id], onDelete: Cascade)
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document Document @relation(fields: [documentId], references: [id], onDelete: Cascade)
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createdAt DateTime @default(now()) @map("created_at")
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@@index([taskId])
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@@index([documentId])
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@@index([status])
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@@map("batch_results")
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@@schema("pkb_schema")
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}
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```
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#### 业务规则
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1. **结果存储** - `result_data`存储JSON格式的结构化数据
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2. **原始输出** - `raw_output`保留LLM原始输出,便于调试
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3. **Token统计** - 记录每篇文献的Token消耗
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---
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### 5. task_templates - 任务模板表 (Phase 3, 暂不实现)
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**用途:** 存储预定义的批处理任务模板
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#### 表结构
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| 字段名 | 数据类型 | 约束 | 说明 |
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|--------|---------|------|------|
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| id | TEXT | PRIMARY KEY | 模板唯一标识(UUID) |
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| user_id | TEXT | NOT NULL, FK | 所属用户ID |
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| template_name | TEXT | NOT NULL | 模板名称 |
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| task_type | TEXT | NOT NULL | 任务类型 |
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| prompt_template | TEXT | NOT NULL | Prompt模板 |
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| output_fields | JSONB | NOT NULL, DEFAULT '{}' | 输出字段定义 |
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| model_name | TEXT | NOT NULL, DEFAULT 'gpt-4' | 默认模型 |
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| created_at | TIMESTAMPTZ | NOT NULL, DEFAULT now() | 创建时间 |
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| updated_at | TIMESTAMPTZ | NOT NULL | 更新时间 |
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#### Prisma Model
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```prisma
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model TaskTemplate {
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id String @id @default(uuid())
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userId String @map("user_id")
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templateName String @map("template_name")
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taskType String @map("task_type")
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promptTemplate String @map("prompt_template") @db.Text
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outputFields Json @default("{}") @map("output_fields")
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modelName String @default("gpt-4") @map("model_name")
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user User @relation(fields: [userId], references: [id], onDelete: Cascade)
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createdAt DateTime @default(now()) @map("created_at")
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updatedAt DateTime @updatedAt @map("updated_at")
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@@index([userId])
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@@map("task_templates")
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@@schema("pkb_schema")
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}
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```
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#### 业务规则
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1. **模板复用** - 用户可保存常用的任务配置
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2. **字段定义** - `output_fields`定义期望的输出结构
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3. **暂不实现** - Phase 3预留,后续开发
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---
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## 表关系图
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```mermaid
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erDiagram
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PLATFORM_USERS ||--o{ KNOWLEDGE_BASES : "owns"
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PLATFORM_USERS ||--o{ DOCUMENTS : "uploads"
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PLATFORM_USERS ||--o{ BATCH_TASKS : "creates"
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PLATFORM_USERS ||--o{ TASK_TEMPLATES : "defines"
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KNOWLEDGE_BASES ||--o{ DOCUMENTS : "contains"
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KNOWLEDGE_BASES ||--o{ BATCH_TASKS : "processes"
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BATCH_TASKS ||--o{ BATCH_RESULTS : "generates"
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DOCUMENTS ||--o{ BATCH_RESULTS : "analyzed_by"
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|
||
PLATFORM_USERS {
|
||
text id PK
|
||
text email
|
||
text password
|
||
}
|
||
|
||
KNOWLEDGE_BASES {
|
||
text id PK
|
||
text user_id FK
|
||
text name
|
||
text dify_dataset_id
|
||
int file_count
|
||
bigint total_size_bytes
|
||
}
|
||
|
||
DOCUMENTS {
|
||
text id PK
|
||
text kb_id FK
|
||
text user_id FK
|
||
text filename
|
||
text file_type
|
||
text dify_document_id
|
||
text status
|
||
text full_text
|
||
jsonb metadata
|
||
}
|
||
|
||
BATCH_TASKS {
|
||
text id PK
|
||
text user_id FK
|
||
text kb_id FK
|
||
text task_name
|
||
text task_type
|
||
text status
|
||
int total_documents
|
||
int processed_count
|
||
}
|
||
|
||
BATCH_RESULTS {
|
||
text id PK
|
||
text task_id FK
|
||
text document_id FK
|
||
text status
|
||
jsonb result_data
|
||
text raw_output
|
||
}
|
||
|
||
TASK_TEMPLATES {
|
||
text id PK
|
||
text user_id FK
|
||
text template_name
|
||
text task_type
|
||
jsonb output_fields
|
||
}
|
||
```
|
||
|
||
### 跨Schema引用
|
||
|
||
**外键关系:**
|
||
- `knowledge_bases.user_id` → `platform_schema.users.id`
|
||
- `documents.user_id` → `platform_schema.users.id`
|
||
- `batch_tasks.user_id` → `platform_schema.users.id`
|
||
- `task_templates.user_id` → `platform_schema.users.id`
|
||
|
||
**说明:** Prisma自动处理跨Schema外键,应用代码无需关心Schema前缀
|
||
|
||
---
|
||
|
||
## 索引设计
|
||
|
||
### 主键索引
|
||
所有表的`id`字段自动创建B-tree主键索引。
|
||
|
||
### 外键索引
|
||
|
||
| 表名 | 索引字段 | 用途 |
|
||
|------|---------|------|
|
||
| knowledge_bases | user_id | 查询用户的所有知识库 |
|
||
| knowledge_bases | dify_dataset_id | Dify数据同步 |
|
||
| documents | kb_id | 查询知识库的所有文档 |
|
||
| documents | user_id | 查询用户的所有文档 |
|
||
| documents | status | 过滤文档状态 |
|
||
| documents | dify_document_id | Dify数据同步 |
|
||
| documents | extraction_method | 按提取方法过滤 |
|
||
| batch_tasks | user_id | 查询用户的任务 |
|
||
| batch_tasks | kb_id | 查询知识库的任务 |
|
||
| batch_tasks | status | 过滤任务状态 |
|
||
| batch_results | task_id | 查询任务的所有结果 |
|
||
| batch_results | document_id | 查询文档的处理结果 |
|
||
| batch_results | status | 过滤结果状态 |
|
||
| task_templates | user_id | 查询用户的模板 |
|
||
|
||
### 时间索引
|
||
|
||
| 表名 | 索引字段 | 用途 |
|
||
|------|---------|------|
|
||
| batch_tasks | created_at | 按时间排序任务 |
|
||
|
||
---
|
||
|
||
## Phase 3功能说明
|
||
|
||
### 批处理工作流程
|
||
|
||
```mermaid
|
||
sequenceDiagram
|
||
participant User
|
||
participant API
|
||
participant BatchTask
|
||
participant Document
|
||
participant LLM
|
||
participant BatchResult
|
||
|
||
User->>API: 创建批处理任务
|
||
API->>BatchTask: 创建任务记录
|
||
API->>Document: 查询知识库文档列表
|
||
|
||
loop 每篇文档
|
||
BatchTask->>Document: 读取文档全文
|
||
BatchTask->>LLM: 调用LLM提取信息
|
||
LLM-->>BatchTask: 返回结构化数据
|
||
BatchTask->>BatchResult: 保存结果
|
||
BatchTask->>BatchTask: 更新进度
|
||
end
|
||
|
||
BatchTask->>API: 任务完成
|
||
API-->>User: 返回结果汇总
|
||
```
|
||
|
||
### 批处理任务类型示例
|
||
|
||
1. **信息提取** (`extract_info`)
|
||
- 提取研究方法、样本量、P值等
|
||
- 输出JSON格式的结构化数据
|
||
|
||
2. **文献摘要** (`summarize`)
|
||
- 批量生成文献摘要
|
||
- 统一格式和长度
|
||
|
||
3. **文献分类** (`classify`)
|
||
- 根据研究类型分类
|
||
- 标签化管理
|
||
|
||
---
|
||
|
||
## 变更历史
|
||
|
||
### v1.0 - 2025-11-12 - 初始版本 ✅
|
||
|
||
**变更内容:**
|
||
1. 从`public` schema迁移到`pkb_schema`
|
||
2. 5个表全部迁移:
|
||
- knowledge_bases
|
||
- documents
|
||
- batch_tasks
|
||
- batch_results
|
||
- task_templates
|
||
3. 在Prisma中添加`@@schema("pkb_schema")`标签
|
||
4. 所有数据100%完整迁移
|
||
|
||
**迁移脚本:** `docs/09-架构实施/migration-scripts/004-migrate-pkb.sql`
|
||
|
||
**验证状态:** ✅ 已验证,功能正常
|
||
|
||
**特殊处理:**
|
||
- `batch_results.rawOutput` → `raw_output`(列名映射修正)
|
||
- `task_templates.outputFields` → `output_fields`(列名映射修正)
|
||
|
||
---
|
||
|
||
## 📚 相关文档
|
||
|
||
- [Schema隔离架构设计](../../../09-架构实施/01-Schema隔离架构设计(10个).md)
|
||
- [Schema迁移完成报告](../../../09-架构实施/Schema迁移完成报告.md)
|
||
- [Prisma配置完成报告](../../../09-架构实施/Prisma配置完成报告.md)
|
||
- [快速功能测试报告](../../../09-架构实施/快速功能测试报告.md)
|
||
- [AIA数据库设计文档](../../AIA-AI智能问答/02-技术设计/01-数据库设计.md)
|
||
|
||
---
|
||
|
||
**文档维护者:** AI助手
|
||
**最后更新:** 2025-11-12
|
||
**文档状态:** ✅ 已完成并验证
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|