# tx_hardware 维度表

> 所属模块：[数据模型概览](../概览.md)

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## 1. 表定义

**表名**：`tx_hardware`

**描述**：TX硬件版本维度表，存储所有硬件版本号

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## 2. 字段定义

| 列名 | 类型 | 约束 | 说明 |
|------|------|------|------|
| id | UUID | PK, NOT NULL | 主键，自动生成 |
| version | VARCHAR(50) | UNIQUE, NOT NULL | 硬件版本号 |
| is_deleted | BOOLEAN | NOT NULL, DEFAULT FALSE | 软删除标记 |
| created_at | TIMESTAMP | NOT NULL, DEFAULT NOW() | 创建时间 |

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## 3. EF Core 模型

```csharp
// Models/TxHardware.cs
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace WCTDataMiner.Models;

[Table("tx_hardware")]
public class TxHardware
{
    [Key]
    [Column("id")]
    public Guid Id { get; set; } = Guid.NewGuid();

    [Required]
    [MaxLength(50)]
    [Column("version")]
    public string Version { get; set; } = null!;

    [Required]
    [Column("is_deleted")]
    public bool IsDeleted { get; set; } = false;

    [Required]
    [Column("created_at")]
    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;

    // Navigation Properties
    public ICollection<TestScenario> TestScenarios { get; set; } = [];
}
```

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## 4. 使用说明

硬件版本在解析文件名时自动创建，无需预置数据：

```csharp
// 获取或创建硬件版本
public async Task<TxHardware> GetOrCreateAsync(string version)
{
    var existing = await context.TxHardwares
        .FirstOrDefaultAsync(h => h.Version == version);
    
    if (existing != null) return existing;
    
    var newHardware = new TxHardware { Version = version };
    context.TxHardwares.Add(newHardware);
    await context.SaveChangesAsync();
    return newHardware;
}
```