A:增加数据库配置和使用
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using Microsoft.EntityFrameworkCore;
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using Sharp.Data;
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namespace Data.Test;
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/// <summary>
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/// 快速开始 - 最简单的演示
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///
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/// 如果您是第一次使用 Sharp.Data，从这里开始！
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/// </summary>
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[TestClass]
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public class _00_QuickStart
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{
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/// <summary>
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/// 演示: 3 行代码开始使用 Sharp.Data
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/// </summary>
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[TestMethod]
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public async Task QuickStart_ThreeLines()
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{
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// 第1行：创建构建器
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var builder = new DataContextBuilder<TestDbContext>();
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// 第2行：配置数据库
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builder.UseInMemoryDatabase("QuickStartDemo");
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// 第3行：构建并使用
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using var db = builder.Build();
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// 完成！现在可以使用数据库了
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var productRepo = db.Repository<Product>();
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// 添加产品
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await productRepo.AddAsync(new Product
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{
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Name = "iPhone 15",
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Price = 7999m,
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Stock = 100
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});
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await db.SaveChangesAsync();
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// 查询产品
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var products = await productRepo.GetAllAsync();
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Assert.AreEqual(1, products.Count);
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Console.WriteLine($"✓ 成功添加并查询产品: {products[0].Name}");
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}
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/// <summary>
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/// 演示: 启用审计和软删除
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/// </summary>
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[TestMethod]
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public async Task QuickStart_WithAuditAndSoftDelete()
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{
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var builder = new DataContextBuilder<TestDbContext>();
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builder.UseInMemoryDatabase($"AuditDemo_{Guid.NewGuid()}")
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.UseAudit(true) // 启用审计
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.UseSoftDelete(true) // 启用软删除
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.UseCurrentUser("admin"); // 设置当前用户
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using var db = builder.Build();
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var repo = db.Repository<Product>();
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// 添加产品（自动记录创建信息）
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var product = new Product { Name = "测试产品", Price = 99m, Stock = 10 };
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await repo.AddAsync(product);
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await db.SaveChangesAsync();
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Console.WriteLine($"✓ 产品已创建");
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Console.WriteLine($" CreatedBy: {product.CreatedBy}");
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Console.WriteLine($" CreatedAt: {product.CreatedAt:yyyy-MM-dd HH:mm:ss}");
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// 软删除（不会真正删除）
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await repo.RemoveAsync(product.Id);
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await db.SaveChangesAsync();
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Console.WriteLine($"\n✓ 产品已软删除");
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Console.WriteLine($" IsDeleted: {product.IsDeleted}");
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Console.WriteLine($" DeletedAt: {product.DeletedAt:yyyy-MM-dd HH:mm:ss}");
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// 验证：正常查询看不到已删除的
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var found = await repo.GetByIdAsync(product.Id);
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Assert.IsNull(found);
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Console.WriteLine($"\n✓ 正常查询返回 null (已删除的数据被自动过滤)");
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}
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/// <summary>
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/// 演示: 分页查询
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/// </summary>
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[TestMethod]
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public async Task QuickStart_Pagination()
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{
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var builder = new DataContextBuilder<TestDbContext>();
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builder.UseInMemoryDatabase($"PageDemo_{Guid.NewGuid()}");
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using var db = builder.Build();
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var repo = db.Repository<Product>();
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// 添加测试数据
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for (int i = 1; i <= 25; i++)
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{
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await repo.AddAsync(new Product
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{
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Name = $"产品{i}",
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Price = i * 10m,
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Stock = i
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});
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}
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await db.SaveChangesAsync();
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// 分页查询：第2页，每页10条
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var result = await repo.GetPagedAsync(2, 10);
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Console.WriteLine($"分页查询结果:");
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Console.WriteLine($" 当前页: {result.PageIndex}");
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Console.WriteLine($" 每页数量: {result.PageSize}");
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Console.WriteLine($" 总记录数: {result.TotalCount}");
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Console.WriteLine($" 总页数: {result.TotalPages}");
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Console.WriteLine($" 当前页产品数: {result.Items.Count}");
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Assert.AreEqual(2, result.PageIndex);
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Assert.AreEqual(25, result.TotalCount);
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Assert.AreEqual(3, result.TotalPages);
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Assert.AreEqual(10, result.Items.Count);
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}
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/// <summary>
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/// 演示: 使用自定义实体（不使用基类）
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/// </summary>
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[TestMethod]
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public async Task QuickStart_CustomEntity()
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{
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var builder = new DataContextBuilder<TestDbContext>();
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builder.UseInMemoryDatabase($"CustomDemo_{Guid.NewGuid()}");
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using var db = builder.Build();
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var repo = db.Repository<CustomProduct>();
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// CustomProduct 不使用任何基类，完全自定义
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var product = new CustomProduct
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{
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Id = Guid.NewGuid(),
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Name = "自定义产品",
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Price = 299.99m,
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CreatedDate = DateTime.UtcNow
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};
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await repo.AddAsync(product);
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await db.SaveChangesAsync();
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var found = await repo.GetByIdAsync(product.Id);
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Assert.IsNotNull(found);
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Console.WriteLine($"✓ 自定义实体也能正常工作:");
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Console.WriteLine($" Name: {found.Name}");
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Console.WriteLine($" Price: {found.Price:C}");
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Console.WriteLine($" IsExpensive: {found.IsExpensive}");
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}
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/// <summary>
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/// 演示: 直接使用 EF Core
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/// </summary>
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[TestMethod]
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public async Task QuickStart_DirectEFCore()
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{
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var builder = new DataContextBuilder<TestDbContext>();
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builder.UseInMemoryDatabase($"DirectDemo_{Guid.NewGuid()}");
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using var db = builder.Build();
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// 可以直接访问 DbContext
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var context = db.Context;
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var products = context.Set<Product>();
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// 使用 EF Core 原生 API
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products.Add(new Product { Name = "EF Core 产品", Price = 199m, Stock = 50 });
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await context.SaveChangesAsync();
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// 使用 LINQ 查询
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var count = await products.CountAsync();
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Assert.AreEqual(1, count);
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Console.WriteLine($"✓ 可以直接使用 EF Core，完全兼容!");
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}
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}
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