Initial Commit ...

Extensions/EntityExtensions.cs

@@ -0,0 +1,67 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using xCommons.Extensions;
+using xModels.Base;
+
+namespace xDataService.Extensions {
+    public static class EntityExtensions {
+        /// <summary>
+        /// return all values of an entity properties as a json string ...
+        /// </summary>
+        /// <param name="item"></param>
+        /// <typeparam name="T"></typeparam>
+        /// <returns></returns>
+        public static string GetPropValues<T> (this T item)
+        where T : XBaseEntity<T> {
+            //
+            var props = item.GetType ().GetProperties ();
+            var vals = props.Select (p => p.GetValue (item));
+
+            //
+            return vals.ToJSON ();
+        }
+
+        /// <summary>
+        /// check values of all properties of an Entity contains specific value or not ...
+        /// </summary>
+        /// <param name="item"></param>
+        /// <param name="value"></param>
+        /// <typeparam name="T"></typeparam>
+        /// <returns></returns>
+        public static bool PropValuesContains<T> (this T item, string value)
+        where T : XBaseEntity<T> => item.GetPropValues ()
+            .ToNormalString ()
+            .Contains (value);
+
+        /// <summary>
+        /// Retrieve Default Column Map of specific Entity ...
+        /// </summary>
+        /// <param name="item"></param>
+        /// <typeparam name="T"></typeparam>
+        /// <returns></returns>
+        public static IDictionary<string, Expression<Func<T, object>>> GetDefaultColumnsMap<T> (this T item)
+        where T : XBaseEntity<T> {
+            //
+            if (item.IsNull ()) {
+                return null;
+            }
+
+            //
+            var result = new Dictionary<string, Expression<Func<T, object>>> ();
+            var props = item.GetType ().GetProperties ();
+
+            //
+            foreach (var prop in props) {
+                result.Add (
+                    prop.Name,
+                    t => t.GetType ().GetProperty (prop.Name).GetValue (t, null));
+            }
+
+            //
+            return result;
+        }
+
+    }
+}