From 50cb8cede6e8a0e227ca5144f16d8b85ed3e0438 Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Tue, 30 Aug 2022 21:38:09 +0800
Subject: [PATCH] Update  Access

---
 .../SqlSugar.Access/Access/AccessProvider.cs  |  9 +-
 .../Access/SqlBuilder/AccessInsertBuilder.cs  |  1 -
 .../Access/SqlBuilder/AccessUpdateBuilder.cs  | 95 +++++++++++++++++--
 3 files changed, 94 insertions(+), 11 deletions(-)

diff --git a/Src/Asp.Net/SqlSugar.Access/Access/AccessProvider.cs b/Src/Asp.Net/SqlSugar.Access/Access/AccessProvider.cs
index 30ee73ae1..6ef87df39 100644
--- a/Src/Asp.Net/SqlSugar.Access/Access/AccessProvider.cs
+++ b/Src/Asp.Net/SqlSugar.Access/Access/AccessProvider.cs
@@ -137,7 +137,14 @@ namespace SqlSugar.Access
             }
             else
             {
-                return base.ExecuteCommand(sql, parameters);
+                if (sql.TrimStart('\r').TrimStart('\n') != "")
+                {
+                    return base.ExecuteCommand(sql, parameters);
+                }
+                else
+                {
+                    return 0;
+                }
             }
         }
         public override async Task<int> ExecuteCommandAsync(string sql, SugarParameter[] parameters)
diff --git a/Src/Asp.Net/SqlSugar.Access/Access/SqlBuilder/AccessInsertBuilder.cs b/Src/Asp.Net/SqlSugar.Access/Access/SqlBuilder/AccessInsertBuilder.cs
index 3e5c8ee2d..e5db0f446 100644
--- a/Src/Asp.Net/SqlSugar.Access/Access/SqlBuilder/AccessInsertBuilder.cs
+++ b/Src/Asp.Net/SqlSugar.Access/Access/SqlBuilder/AccessInsertBuilder.cs
@@ -138,7 +138,6 @@ namespace SqlSugar.Access
             }
             return "'" + date.ToString("yyyy-MM-dd HH:mm") + "'";
         }
-
         private object GetDateTimeString(object value)
         {
             var date = value.ObjToDate();
diff --git a/Src/Asp.Net/SqlSugar.Access/Access/SqlBuilder/AccessUpdateBuilder.cs b/Src/Asp.Net/SqlSugar.Access/Access/SqlBuilder/AccessUpdateBuilder.cs
index 84dcd97a8..541632b02 100644
--- a/Src/Asp.Net/SqlSugar.Access/Access/SqlBuilder/AccessUpdateBuilder.cs
+++ b/Src/Asp.Net/SqlSugar.Access/Access/SqlBuilder/AccessUpdateBuilder.cs
@@ -10,19 +10,96 @@ namespace SqlSugar.Access
     {
         protected override string TomultipleSqlString(List<IGrouping<int, DbColumnInfo>> groupList)
         {
-            if (groupList.Count == 0) 
+            StringBuilder sb = new StringBuilder();
+            int i = 0;
+            sb.AppendLine(string.Join("", groupList.Select(t =>
             {
-                return null;
+                var updateTable = string.Format("UPDATE {0} SET", base.GetTableNameStringNoWith);
+                var setValues = string.Join(",", t.Where(s => !s.IsPrimarykey).Select(m => GetOracleUpdateColums(i, m, false)).ToArray());
+                var pkList = t.Where(s => s.IsPrimarykey).ToList();
+                List<string> whereList = new List<string>();
+                foreach (var item in pkList)
+                {
+                    var isFirst = pkList.First() == item;
+                    var whereString = "";
+                    whereString += GetOracleUpdateColums(i, item, true);
+                    whereList.Add(whereString);
+                }
+                i++;
+                return string.Format("{0} {1} WHERE {2}", updateTable, setValues, string.Join(" AND", whereList)) + UtilConstants.ReplaceCommaKey;
+            }).ToArray()));
+            return sb.ToString();
+        }
+        private string GetOracleUpdateColums(int i, DbColumnInfo m, bool iswhere)
+        {
+            return string.Format("{0}={1}", m.DbColumnName , FormatValue(m.Value));
+        }
+
+        public override object FormatValue(object value)
+        {
+            var n = "";
+            if (value == null)
+            {
+                return "NULL";
             }
-            else if (groupList.GroupBy(it => it.Key).Count() > 1)
+            else
             {
-                throw new Exception("access no support batch update");
-            }
-            else 
-            {
-                return ToSingleSqlString(groupList);
+                var type = UtilMethods.GetUnderType(value.GetType());
+                if (type == UtilConstants.DateType)
+                {
+                    return GetDateTimeString(value);
+                }
+                else if (value is DateTimeOffset)
+                {
+                    return GetDateTimeOffsetString(value);
+                }
+                else if (type == UtilConstants.ByteArrayType)
+                {
+                    string bytesString = "0x" + BitConverter.ToString((byte[])value).Replace("-", "");
+                    return bytesString;
+                }
+                else if (type.IsEnum())
+                {
+                    if (this.Context.CurrentConnectionConfig.MoreSettings?.TableEnumIsString == true)
+                    {
+                        return value.ToSqlValue(); ;
+                    }
+                    else
+                    {
+                        return Convert.ToInt64(value);
+                    }
+                }
+                else if (SqlSugar.UtilMethods.IsNumber(type.Name))
+                {
+                    return value;
+                }
+                else if (type == UtilConstants.BoolType)
+                {
+                    return value.ObjToBool() ? "1" : "0";
+                }
+                else
+                {
+                    return n + "'" + value + "'";
+                }
             }
         }
-         
+        private object GetDateTimeOffsetString(object value)
+        {
+            var date = UtilMethods.ConvertFromDateTimeOffset((DateTimeOffset)value);
+            if (date == DateTime.MinValue)
+            {
+                date = Convert.ToDateTime("1900-01-01");
+            }
+            return "'" + date.ToString("yyyy-MM-dd HH:mm") + "'";
+        }
+        private object GetDateTimeString(object value)
+        {
+            var date = value.ObjToDate();
+            if (date == DateTime.MinValue)
+            {
+                date = Convert.ToDateTime("1900-01-01");
+            }
+            return "'" + date.ToString("yyyy-MM-dd HH:mm") + "'";
+        }
     }
 }