DDD领域驱动设计之运用层代码
5、整体DEMO代码
什么是运用层，说白了就是以前三层的BLL，没有什么特别，只是调用的不是以前的DAL了，而是领域层+基础设施层，运用层接口基本是可以根据原型来做的，也就是UI需要什么数据就定义什么接口，难点就在于怎么去调用领域层了，这个如果是分开来开发的话，难度会很大，为什么是很难呢，原因就在于区分职责，需要有很详细的领域层说明以及实时的参与领域建模。
运用层代码1
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using DDD.Domain;
using DDD.Domain.Arrange;
namespace DDD.Services
{
public class PlanArrangeService : NDJHService<PlanArrange>, IPlanArrangeService
{
private readonly IPlanArrangeRepository repository;
private readonly ArrangeService service;
protected PlanArrangeService(IPlanArrangeRepository repository, ArrangeService service)
: base(repository)
{
this.repository = repository;
this.service = service;
}
/// <summary>
/// 查找可下发的批次列表
/// </summary>
/// <param name="xzqdm"></param>
/// <returns></returns>
public override IList<BatchModel> FindAllowSendBatches(string xzqdm)
{
if (string.IsNullOrEmpty(xzqdm)) throw new ArgumentNullException("xzqdm");
if (!xzqdm.EndsWith("00")) //如果是县级用户，则不需要判断t.XFXZQDM != t.XZQDM这个条件
{
var list = FindBy(0, 0, xzqdm, ProjectStauts.Default).OrderBy(a => a.APPC).ToList();
var query = from t in list
group t by new { t.APPC, t.ND }
into temp
select new BatchModel
{
Batch = temp.Key.APPC,
IsSent = false,
Year = temp.Key.ND
};
return query.ToList();
}
else
{
return base.FindAllowSendBatches(xzqdm);
}
}
/// <summary>
/// 查找计划安排列表
/// </summary>
/// <param name="year">年度</param>
/// <param name="grade">指标级别</param>
/// <param name="xzqdm">行政区代码</param>
/// <returns></returns>
public IList<PlanArrange> FindByDescendants(int year, string xzqdm, IndicatorGrade? grade = null)
{
if (string.IsNullOrEmpty(xzqdm)) throw new ArgumentNullException("xzqdm");
var query = this.repository
.Where(GetDistrictCodeExpr(xzqdm))
.Where(grade.HasValue, a => a.ZBJB == grade.Value)
.Where(year != 0, a => a.ND == year);
if (xzqdm.EndsWith("0000"))
{
//省级用户可以查看国家安排、省级安排、市县级已下发的安排
if (grade == IndicatorGrade.City || grade == IndicatorGrade.County)
{
query = query.Where(t=>t.Status == ProjectStauts.Sent);
}
}
else if (xzqdm.EndsWith("00"))
{
//市级用户可以查看国家、省、县已下发的安排、市级安排
if (grade != IndicatorGrade.City)
{
query = query.Where(t => t.Status == ProjectStauts.Sent);
}
}
else
{
//县级用户可以查看国家、省、市已下发的安排、县级项目
if (grade != IndicatorGrade.County)
{
query = query.Where(t => t.Status == ProjectStauts.Sent);
}
}
return query.OrderBy(t => t.APPC).ToList();
}
/// <summary>
/// 行政区代码表达式
/// </summary>
/// <param name="xzqdm">一般为参数传递的值</param>
/// <returns></returns>
private Expression<Func<PlanArrange, bool>> GetDistrictCodeExpr(string xzqdm)
{
if (string.IsNullOrEmpty(xzqdm)) throw new ArgumentNullException("xzqdm");
if (xzqdm.EndsWith("0000"))
{
var sub = xzqdm.Substring(0, 2);
return d => d.XFXZQDM.Contains(sub);
}
else if (xzqdm.EndsWith("00"))
{
var sub = xzqdm.Substring(0, 4);
return d => d.XFXZQDM.Contains(sub);
}
else
{
return d => d.XFXZQDM.Contains(xzqdm);
}
}
public override void Update(PlanArrange entity)
{
service.CheckUpdate(entity);
base.Update(entity);
}
public override void Register(PlanArrange entity, IList<PlanArrange> entities)
{
if (entity == null) throw new ArgumentNullException("entity");
Validate(entity);
Validate(entities);
service.Register(entity, entities);
repository.Add(entity);
foreach (var item in entities)
{
repository.Add(item);
}
}
}
}
运用层代码2
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;
using DDD.Domain;
using DDD.Domain.Indicator;
namespace DDD.Services
{
public class PlanIndicatorService : NDJHService<PlanIndicator>, IPlanIndicatorService
{
private readonly IPlanIndicatorRepository repository;
private readonly IndicatorService service;
protected PlanIndicatorService(IPlanIndicatorRepository repository, IndicatorService service)
: base(repository)
{
this.repository = repository;
this.service = service;
}
/// <summary>
/// 查找指标列表(国家下发，省级发，市级下发)
/// </summary>
/// <param name="year">年度</param>
/// <param name="xzqdm">下发行政区代码</param>
/// <param name="grade">指标级别</param>
/// <returns></returns>
public IList<PlanIndicator> FindReceive(int year, string xzqdm)
{
if (string.IsNullOrEmpty(xzqdm)) throw new ArgumentNullException("xzqdm");
return this.repository
.Where(t => t.XFXZQDM != t.XZQDM)
.Where(t => t.XFXZQDM == xzqdm)
.Where(t => t.Status == ProjectStauts.Sent)
.Where(year != 0, a => a.ND == year)
.OrderBy(a => a.APPC).ToList();
}
/// <summary>
/// 查找预留指标列表(省级预留，市级预留)
/// </summary>
/// <param name="year">年度</param>
/// <param name="xzqdm">行政区代码</param>
/// <returns></returns>
public IList<PlanIndicator> FindReserve(int year, string xzqdm)
{
if (string.IsNullOrEmpty(xzqdm)) throw new ArgumentNullException("xzqdm");
return this.repository
.Where(a => a.XFXZQDM == a.XZQDM)
.Where(a => a.XZQDM == xzqdm)
.Where(year != 0, a => a.ND == year)
.OrderBy(a => a.APPC).ToList();
}
/// <summary>
/// 查找下发指标列表(下发市级，下发县级)
/// </summary>
/// <param name="year">年度</param>
/// <param name="xzqdm">行政区代码</param>
/// <returns></returns>
public IList<PlanIndicator> FindSendTo(int year, string xzqdm)
{
if (string.IsNullOrEmpty(xzqdm)) throw new ArgumentNullException("xzqdm");
return this.repository
.Where(a => a.XFXZQDM != a.XZQDM)
.Where(a => a.XZQDM == xzqdm)
.Where(year != 0, a => a.ND == year)
.OrderBy(a => a.APPC).ToList();
}
/// <summary>
/// 查找指定行政区下发的指标（预留+下发）
/// </summary>
/// <param name="status">状态</param>
/// <param name="xzqdm">行政区代码</param>
/// <returns></returns>
public IList<PlanIndicator> FindSend(string xzqdm, ProjectStauts status)
{
if (string.IsNullOrEmpty(xzqdm)) throw new ArgumentNullException("xzqdm");
return this.repository
.Where(a => a.XZQDM == xzqdm)
.Where(t => t.Status == status)
.OrderBy(a => a.APPC).ToList();
}
/// <summary>
/// 统计预留指标
/// </summary>
/// <param name="year"></param>
/// <param name="xzqdm"></param>
/// <returns></returns>
public IndicatorArea TotalReserveIndicator(int year, string xzqdm)
{
if (string.IsNullOrEmpty(xzqdm)) throw new ArgumentNullException("xzqdm");
return repository.TotalReserveIndicator(year, xzqdm);
}
/// <summary>
/// 统计上级下发给下级指标（省-国家下发，市-省级下发，县-市级下发）
/// </summary>
/// <param name="year"></param>
/// <param name="xzqdm"></param>
/// <returns></returns>
public IndicatorArea TotalReceiveIndicator(int year, string xzqdm)
{
if (string.IsNullOrEmpty(xzqdm)) throw new ArgumentNullException("xzqdm");
return repository.TotalReceiveIndicator(year, xzqdm);
}
/// <summary>
/// 统计下发给下级的指标（省-市级下发，市-县级下发）
/// </summary>
/// <param name="year"></param>
/// <param name="xzqdm"></param>
/// <returns></returns>
public IndicatorArea TotalSendToIndicator(int year, string xzqdm)
{
if (string.IsNullOrEmpty(xzqdm)) throw new ArgumentNullException("xzqdm");
return repository.TotalSendToIndicator(year, xzqdm);
}
public override void Update(PlanIndicator entity)
{
service.CheckUpdate(entity);
base.Update(entity);
}
public override void Register(PlanIndicator entity, IList<PlanIndicator> entities)
{
if (entity == null) throw new ArgumentNullException("entity");
Validate(entity);
Validate(entities);
service.Register(entity, entities);
repository.Add(entity);
foreach (var item in entities)
{
repository.Add(item);
}
}
}
}