- 增加 神州通用 ShenTong 实现；#325

Providers/FreeSql.Provider.ShenTong/ShenTongAdo/ShenTongAdo.cs

@@ -0,0 +1,77 @@
+using FreeSql.Internal;
+using FreeSql.Internal.Model;
+using FreeSql.Internal.ObjectPool;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Data.Common;
+using System.Data.OscarClient;
+using System.Text;
+using System.Threading;
+
+namespace FreeSql.ShenTong
+{
+    class ShenTongAdo : FreeSql.Internal.CommonProvider.AdoProvider
+    {
+        public ShenTongAdo() : base(DataType.ShenTong, null, null) { }
+        public ShenTongAdo(CommonUtils util, string masterConnectionString, string[] slaveConnectionStrings, Func<DbConnection> connectionFactory) : base(DataType.ShenTong, masterConnectionString, slaveConnectionStrings)
+        {
+            base._util = util; 
+            if (connectionFactory != null)
+            {
+                MasterPool = new FreeSql.Internal.CommonProvider.DbConnectionPool(DataType.ShenTong, connectionFactory);
+                return;
+            }
+            if (!string.IsNullOrEmpty(masterConnectionString))
+                MasterPool = new ShenTongConnectionPool("主库", masterConnectionString, null, null);
+            if (slaveConnectionStrings != null)
+            {
+                foreach (var slaveConnectionString in slaveConnectionStrings)
+                {
+                    var slavePool = new ShenTongConnectionPool($"从库{SlavePools.Count + 1}", slaveConnectionString, () => Interlocked.Decrement(ref slaveUnavailables), () => Interlocked.Increment(ref slaveUnavailables));
+                    SlavePools.Add(slavePool);
+                }
+            }
+        }
+
+        public override object AddslashesProcessParam(object param, Type mapType, ColumnInfo mapColumn)
+        {
+            if (param == null) return "NULL";
+            if (mapType != null && mapType != param.GetType() && (param is IEnumerable == false))
+                param = Utils.GetDataReaderValue(mapType, param);
+
+            if (param is bool || param is bool?)
+                return (bool)param ? "'t'" : "'f'";
+            else if (param is string || param is char)
+                return string.Concat("'", param.ToString().Replace("'", "''"), "'");
+            else if (param is Enum)
+                return ((Enum)param).ToInt64();
+            else if (decimal.TryParse(string.Concat(param), out var trydec))
+                return param;
+            else if (param is DateTime || param is DateTime?)
+                return string.Concat("'", ((DateTime)param).ToString("yyyy-MM-dd HH:mm:ss.ffffff"), "'");
+            else if (param is TimeSpan || param is TimeSpan?)
+                return ((TimeSpan)param).TotalSeconds;
+            else if (param is byte[])
+                return $"0x{CommonUtils.BytesSqlRaw(param as byte[])}";
+            else if (param is IEnumerable)
+                return AddslashesIEnumerable(param, mapType, mapColumn);
+
+            return string.Concat("'", param.ToString().Replace("'", "''"), "'");
+        }
+
+        protected override DbCommand CreateCommand()
+        {
+            return new OscarCommand();
+        }
+
+        protected override void ReturnConnection(IObjectPool<DbConnection> pool, Object<DbConnection> conn, Exception ex)
+        {
+            var rawPool = pool as ShenTongConnectionPool;
+            if (rawPool != null) rawPool.Return(conn, ex);
+            else pool.Return(conn);
+        }
+
+        protected override DbParameter[] GetDbParamtersByObject(string sql, object obj) => _util.GetDbParamtersByObject(sql, obj);
+    }
+}