refact

src/isnd/Data/PackageVersion.cs

@@ -0,0 +1,34 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Newtonsoft.Json;
+
+namespace isn.Data
+{
+    public class PackageVersion
+    {
+        [Required]
+        [ForeignKey("Package")]
+        public string PackageId { get; set; }
+
+        [Required]
+        public int Major { get; set; }
+        
+        [Required]
+        public int Minor { get; set; }
+        
+        [Required]
+        public int Patch { get; set; }
+
+        [StringLength(256)]
+        [Required]
+        public string FullString { get; set; }
+        public bool IsPrerelease { get; set; }
+
+        [StringLength(256)]
+        public string Type { get; set; }
+
+        [JsonIgnore]
+        public virtual Package Package { get; set; }
+
+    }
+}