制造企业构建ERP系统：怎么适配生产排程、物料需求、质量追溯场景？

// 生产排程算法示例
public class ProductionScheduler
{
    public Schedule GenerateOptimalSchedule(Order[] orders, 
                                           Machine[] machines, 
                                           DateTime planningHorizon)
    {
        // 实现基于约束的排程逻辑
        // 考虑设备能力、订单优先级和交货期
        var schedule = new Schedule();
        
        // 算法核心逻辑
        foreach (var order in orders.OrderBy(o => o.DueDate))
        {
            var availableMachines = machines.Where(m => m.CanProcess(order));
            // 分配生产资源和时间槽
            // ...
        }
        
        return schedule;
    }
}

-- 物料需求计算查询示例
SELECT 
    component_id,
    component_name,
    required_quantity = product_quantity * bom_quantity,
    net_requirement = GREATEST(0, (product_quantity * bom_quantity) - current_stock),
    suggested_order = CASE 
        WHEN (product_quantity * bom_quantity) - current_stock > safety_stock 
        THEN CEILING(((product_quantity * bom_quantity) - current_stock) / lot_size) * lot_size
        ELSE 0
    END
FROM production_plan pp
JOIN bill_of_materials bom ON pp.product_id = bom.product_id
LEFT JOIN inventory inv ON bom.component_id = inv.item_id
WHERE pp.plan_date BETWEEN @start_date AND @end_date

// 质量追溯查询示例
class QualityTraceService {
  async getFullTraceability(lotNumber) {
    // 获取原材料来源
    const materialSources = await this.getMaterialSources(lotNumber);
    
    // 获取生产过程记录
    const productionRecords = await this.getProductionRecords(lotNumber);
    
    // 获取质量检验结果
    const qualityTests = await this.getQualityTests(lotNumber);
    
    // 获取出货和客户信息
    const shipmentInfo = await this.getShipmentInfo(lotNumber);
    
    return {
      materialSources,
      productionRecords,
      qualityTests,
      shipmentInfo
    };
  }
  
  // 其他追溯相关方法...
}