refact.

Yavsc.Server/Models/Billing/ReductionCode.cs

@@ -0,0 +1,33 @@
+
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Yavsc.Billing;
+
+namespace Yavsc.Models.Billing {
+
+public class ReductionCode : IBillingClause
+{
+    [Key,DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+    public long Id { get; set; }
+    public ReductionCode(string descr, decimal impact) {
+        Description = descr;
+        impacter = new FixedImpacter(impact);
+    }
+    public string Description
+    {
+        get;
+        set;
+    }
+    IBillingImpacter impacter;
+    public IBillingImpacter Impacter
+    {
+        get
+        {
+            return impacter ;
+        }
+        private set {
+            impacter  = value;
+        }
+    }
+}
+}