From 6f658bd7853c3e56992de65e2a1832d6144a2e99 Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Wed, 30 Aug 2017 14:37:42 +0800
Subject: [PATCH] Code optimization

---
 .../SqlSugar/ExpressionsToSql/Common/ExpressionConst.cs   | 2 ++
 .../SqlSugar/ExpressionsToSql/ExpressionContext.cs        | 8 ++++----
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionConst.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionConst.cs
index 6420df23e..1e570b37d 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionConst.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionConst.cs
@@ -16,6 +16,8 @@ namespace SqlSugar
         public const string SqlFuncFullName = "SqlSugar.SqlFunc"; 
         public const string MethodConst = "MethodConst";
         public const string Const = "Const";
+        public const string Dot = ".";
+        public const char DotChar = '.';
         public readonly static Type MemberExpressionType = typeof(MemberExpression);
         public readonly static Type ConstantExpressionType = typeof(ConstantExpression);
     }
diff --git a/Src/Asp.Net/SqlSugar/ExpressionsToSql/ExpressionContext.cs b/Src/Asp.Net/SqlSugar/ExpressionsToSql/ExpressionContext.cs
index d93a217d4..5853389f6 100644
--- a/Src/Asp.Net/SqlSugar/ExpressionsToSql/ExpressionContext.cs
+++ b/Src/Asp.Net/SqlSugar/ExpressionsToSql/ExpressionContext.cs
@@ -106,16 +106,16 @@ namespace SqlSugar
             Check.ArgumentNullException(entityName, string.Format(ErrorMessage.ObjNotExist, "Table Name"));
             if (IsTranslationText(entityName)) return entityName;
             isMapping = isMapping && this.MappingTables.IsValuable();
-            var isComplex = entityName.Contains(".");
+            var isComplex = entityName.Contains(ExpressionConst.Dot);
             if (isMapping && isComplex)
             {
-                var columnInfo = entityName.Split('.');
+                var columnInfo = entityName.Split(ExpressionConst.DotChar);
                 var mappingInfo = this.MappingTables.FirstOrDefault(it => it.EntityName.Equals(columnInfo.Last(), StringComparison.CurrentCultureIgnoreCase));
                 if (mappingInfo != null)
                 {
                     columnInfo[columnInfo.Length - 1] = mappingInfo.EntityName;
                 }
-                return string.Join(".", columnInfo.Select(it => GetTranslationText(it)));
+                return string.Join(ExpressionConst.Dot, columnInfo.Select(it => GetTranslationText(it)));
             }
             else if (isMapping)
             {
@@ -124,7 +124,7 @@ namespace SqlSugar
             }
             else if (isComplex)
             {
-                return string.Join(".", entityName.Split('.').Select(it => GetTranslationText(it)));
+                return string.Join(ExpressionConst.Dot, entityName.Split(ExpressionConst.DotChar).Select(it => GetTranslationText(it)));
             }
             else
             {