[#148] 支持like操作符的提取

Author: xuejmnet

src/ShardingCore/Core/VirtualRoutes/ShardingOperatorEnum.cs

@@ -24,12 +24,12 @@ public enum ShardingOperatorEnum
         Equal,
         [Description("!=")]
         NotEqual,
-        // [Description("%w%")]
-        // AllLike,
-        // [Description("%w")]
-        // StartLike,
-        // [Description("w%")]
-        // EndLike
+        [Description("%w%")]
+        AllLike,
+        [Description("%w")]
+        StartLike,
+        [Description("w%")]
+        EndLike
         // [Description("Contains")]
         // BeContains
     }

src/ShardingCore/Extensions/CommonExtension.cs

@@ -80,11 +80,26 @@ public static bool IsShardingTableDbContext(this Type dbContextType)
         /// 是否是集合contains方法
         /// </summary>
         /// <param name="express"></param>
-        /// <param name="methodName"></param>
         /// <returns></returns>
-        public static bool IsEnumerableContains(this MethodCallExpression express, string methodName)
+        public static bool IsEnumerableContains(this MethodCallExpression express)
         {
-            return  express.Method.DeclaringType.Namespace.IsIn("System.Linq", "System.Collections.Generic") && methodName == nameof(IList.Contains);
+            var methodName = express.Method.Name;
+            return methodName == nameof(IList.Contains)&& (express.Method.DeclaringType?.Namespace.IsInEnumerable()??false);
+        }
+        public static bool IsStringContains(this MethodCallExpression express)
+        {
+            var methodName = express.Method.Name;
+            return methodName == nameof(string.Contains)&& (express.Method.DeclaringType==typeof(string));
+        }
+        public static bool IsStringStartWith(this MethodCallExpression express)
+        {
+            var methodName = express.Method.Name;
+            return methodName == nameof(string.StartsWith)&& (express.Method.DeclaringType==typeof(string));
+        }
+        public static bool IsStringEndWith(this MethodCallExpression express)
+        {
+            var methodName = express.Method.Name;
+            return methodName == nameof(string.EndsWith)&& (express.Method.DeclaringType==typeof(string));
         }
         /// <summary>
         /// 是否是equal方法

src/ShardingCore/Extensions/LinqExtension.cs

@@ -47,9 +47,14 @@ public static bool IsNotEmpty<T>(this IEnumerable<T> source)
         {
             return !source.IsEmpty();
         }
-        public static bool IsIn<T>(this T thisValue, params T[] values)
+
+        private static readonly HashSet<string> _enumerableContainsNamespace = new HashSet<string>()
+        {
+            "System.Linq", "System.Collections.Generic"
+        };
+        public static bool IsInEnumerable(this string thisValue)
         {
-            return values.Contains(thisValue);
+            return _enumerableContainsNamespace.Contains(thisValue);
         }
         /// <summary>
         /// 按size分区,每个区size个数目