一文搞懂融资业务系统:8个关键问题全面拆解!

// 融资申请实体类示例
public class FinancingApplication
{
    public int Id { get; set; }
    public string ApplicationNumber { get; set; }
    public decimal Amount { get; set; }
    public DateTime ApplicationDate { get; set; }
    public ApplicationStatus Status { get; set; }
    public string Applicant { get; set; }
    
    // 导航属性
    public virtual ICollection ApprovalRecords { get; set; }
}

// 融资审批服务示例
public class FinancingApprovalService
{
    private readonly IFinancingRepository _repository;
    
    public async Task ProcessApproval(int applicationId, 
        string approver, string comments)
    {
        var application = await _repository.GetByIdAsync(applicationId);
        // 审批逻辑处理
        return await _repository.SaveApprovalAsync(application, approver, comments);
    }
}

// 融资产品实体
public class FinancingProduct
{
    public int Id { get; set; }
    public string ProductName { get; set; }
    public decimal MinAmount { get; set; }
    public decimal MaxAmount { get; set; }
    public decimal InterestRate { get; set; }
    public int Term { get; set; } // 期限（月）
    public bool IsActive { get; set; }
}

// 还款计划实体
public class RepaymentPlan
{
    public int Id { get; set; }
    public int FinancingId { get; set; }
    public int Period { get; set; } // 期数
    public DateTime DueDate { get; set; }
    public decimal Principal { get; set; }
    public decimal Interest { get; set; }
    public RepaymentStatus Status { get; set; }
    
    // 外键关系
    public virtual FinancingApplication Financing { get; set; }
}

// 数据库上下文
public class FinancingContext : DbContext
{
    public DbSet FinancingApplications { get; set; }
    public DbSet FinancingProducts { get; set; }
    public DbSet RepaymentPlans { get; set; }
    
    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        // 配置实体关系和约束
        modelBuilder.Entity()
            .HasMany(f => f.RepaymentPlans)
            .WithOne(r => r.Financing)
            .HasForeignKey(r => r.FinancingId);
    }
}