OEA体验：查询面板

一、摘要

       在这里主要是写OEA设计方面的知识了。OEA 源码：OEA框架 2.9 Pre-Alpha 源码公布

可以到BloodyAngel的博客和中可以下到。虽然现在应经知道使用了，但是还是 需要了解框架相关知识运行机制，让我们更好的使用OEA进行开发

        OEA提供了自定义模板机制。我们这里主要是 实现简单的 查询面板

二、本文大纲

       a、摘要 。

       b、远景 。

       c、项目结构 。

       d、OEA实现方法  。

三、远景

     圈圈里的就是我们要实现查询条件，这个条件也是比较通用的，我们只要做一次就可以在多个页面上使用这个功能了，爽吧，减少的重复劳动了。

这个我们这里只用到了一个表的数据。

四、项目结构

      

用到的主要的类 如下：

1:Charging.cs

2:ChargingDateCriteria.cs 

3:TimeSpanCriteria.cs

五、OEA实现方法

       我们现在来看看他是如何实现的

     1：第一步查询条件基础TimeSpanCriteria.cs

  1:  [Serializable]

  2:  public abstract class TimeSpanCriteria : Criteria

  3:  {

  4:      public TimeSpanCriteria()

  5:      {

  6:          this.TimeSpanType = TimeSpanType.LastMonth;

  7:      }

  8:   

  9:      public static readonly Property<TimeSpanType> TimeSpanTypeProperty = P<TimeSpanCriteria>.Register(e => e.TimeSpanType, new PropertyMetadata<TimeSpanType>

 10:      {

 11:          PropertyChangedCallBack = (o, e) => (o as TimeSpanCriteria).OnTimeSpanTypeChanged(e)

 12:      });

 13:      public TimeSpanType TimeSpanType

 14:      {

 15:          get { return this.GetProperty(TimeSpanTypeProperty); }

 16:          set { this.SetProperty(TimeSpanTypeProperty, value); }

 17:      }

 18:      protected virtual void OnTimeSpanTypeChanged(ManagedPropertyChangedEventArgs<TimeSpanType> e)

 19:      {

 20:          var today = DateTime.Today;

 21:          switch (e.NewValue)

 22:          {

 23:              case TimeSpanType.Today:

 24:                  this.From = this.To = today;

 25:                  break;

 26:              case TimeSpanType.Week:

 27:                  var dayOfWeek = (int)today.DayOfWeek;

 28:                  if (dayOfWeek == 0) dayOfWeek = 7;

 29:                  dayOfWeek--;//0-6

 30:  

 31:                  var monday = today.AddDays(-dayOfWeek);

 32:                  this.From = monday;

 33:                  this.To = monday.AddDays(6);

 34:                  break;

 35:              case TimeSpanType.Month:

 36:                  this.From = new DateTime(today.Year, today.Month, 1);

 37:                  this.To = new DateTime(today.Year, today.Month, DateTime.DaysInMonth(today.Year, today.Month));

 38:                  break;

 39:              case TimeSpanType.LastMonth:

 40:                  this.From = today.AddDays(-30);

 41:                  this.To = today;

 42:                  break;

 43:              case TimeSpanType.Year:

 44:                  this.From = new DateTime(today.Year, 1, 1);

 45:                  this.To = new DateTime(today.Year, 12, DateTime.DaysInMonth(today.Year, 12));

 46:                  break;

 47:              case TimeSpanType.All:

 48:                  this.From = new DateTime(1800, 1, 1);

 49:                  this.To = new DateTime(9999, 12, 31);

 50:                  break;

 51:              case TimeSpanType.Custom:

 52:                  break;

 53:              default:

 54:                  break;

 55:          }

 56:          var to = this.To;

 57:          this.To = to.Add(new TimeSpan(23, 59, 59));

 58:      }

 59:   

 60:      public static readonly Property<DateTime> FromProperty = P<TimeSpanCriteria>.Register(e => e.From);

 61:      public DateTime From

 62:      {

 63:          get { return this.GetProperty(FromProperty); }

 64:          set { this.SetProperty(FromProperty, value); }

 65:      }

 66:   

 67:      public static readonly Property<DateTime> ToProperty = P<TimeSpanCriteria>.Register(e => e.To);

 68:      public DateTime To

 69:      {

 70:          get { return this.GetProperty(ToProperty); }

 71:          set { this.SetProperty(ToProperty, value); }

 72:      }

 73:  }

 74:  internal class TimeSpanCriteriaConfig : EntityConfig<TimeSpanCriteria>

 75:  {

 76:      protected override void ConfigView()

 77:      {

 78:          View.DomainName("查é询ˉ条?件t");

 79:   

 80:          //横á向ò显?示?查é询ˉ面?板?。￡

 81:          //View.DetailAsHorizontal = true;

 82:  

 83:          using (View.OrderProperties())

 84:          {

 85:              View.Property(TimeSpanCriteria.TimeSpanTypeProperty)

 86:                  .HasLabel("入?库a日?期ú").ShowIn(ShowInWhere.Detail);

 87:              View.Property(TimeSpanCriteria.FromProperty)

 88:                  .HasLabel("从ó").ShowInDetail(labelWidth: 30);

 89:              View.Property(TimeSpanCriteria.ToProperty)

 90:                  .HasLabel("至á").ShowInDetail(labelWidth: 30);

 91:          }

 92:      }

 93:  }

 94:  public enum TimeSpanType

 95:  {

 96:      [Label("自?定¨义?")]

 97:      Custom,

 98:      [Label("当±天ì")]

 99:      Today,

100:      [Label("本?周ü")]

101:      Week,

102:      [Label("本?月?")]

103:      Month,

104:      [Label("最?近ü一?月?")]

105:      LastMonth,

106:      [Label("本?年ê")]

107:      Year,

108:      [Label("全?部?")]

109:      All

110:  }

111:   

2：第二步查询面板对应的模型ChargingDateCriteria.cs

 1:  [QueryEntity, Serializable]

 2:  public class ChargingDateCriteria : TimeSpanCriteria

 3:  {

 4:      public static readonly RefProperty<Charging> ChargingRefProperty =

 5:          P<ChargingDateCriteria>.RegisterRef(e => e.Charging, ReferenceType.Normal);

 6:      public int ChargingId

 7:      {

 8:          get { return this.GetRefId(ChargingRefProperty); }

 9:          set { this.SetRefId(ChargingRefProperty, value); }

10:      }

11:      public Charging Charging

12:      {

13:          get { return this.GetRefEntity(ChargingRefProperty); }

14:          set { this.SetRefEntity(ChargingRefProperty, value); }

15:      }

16:  }

17:  internal class ChargingDateCriteriaConfig : EntityConfig<ChargingDateCriteria>

18:  {

19:      protected override void ConfigView()

20:      {

21:          using (View.OrderProperties())

22:          {

23:              View.Property(TimeSpanCriteria.TimeSpanTypeProperty);

24:              View.Property(TimeSpanCriteria.FromProperty);

25:              View.Property(TimeSpanCriteria.ToProperty);

26:          }

27:      }

28:  }

29:   

30:   

第三步查询面板关联那个模型

 

第四步显示在菜单上MyLibrary.CS

  菜单界面，点击计费查询就可以看到上面的效果图了是不是很简单。

那我们现在想把这个条件附件到其他的模型上这么处理呢，如计费设定也想要这样的功能。

只需要从第二步改起就可以了。