- 增加 FreeSql.Provider.Custom 自定义适配访问任何数据库；

2025-06-19 04:18:16 +08:00 · 2021-02-05 18:20:38 +08:00
parent 7aedc52cf3
commit 082dcf1fa4
18 changed files with 1509 additions and 193 deletions
--- a/Providers/FreeSql.Provider.Custom/CustomAdo/CustomAdo.cs
+++ b/Providers/FreeSql.Provider.Custom/CustomAdo/CustomAdo.cs
@ -0,0 +1,82 @@
+using FreeSql.Internal;
+using FreeSql.Internal.Model;
+using FreeSql.Internal.ObjectPool;
+using System;
+using System.Collections;
+using System.Data.Common;
+using System.Text;
+using System.Threading;
+
+namespace FreeSql.Custom
+{
+    class CustomAdo : FreeSql.Internal.CommonProvider.AdoProvider
+    {
+        public CustomAdo() : base(DataType.Custom, null, null) { }
+        public CustomAdo(CommonUtils util, string masterConnectionString, string[] slaveConnectionStrings, Func<DbConnection> connectionFactory) : base(DataType.Custom, masterConnectionString, slaveConnectionStrings)
+        {
+            base._util = util;
+            if (connectionFactory != null)
+            {
+                var pool = new FreeSql.Internal.CommonProvider.DbConnectionPool(DataType.SqlServer, connectionFactory);
+                MasterPool = pool;
+                _CreateCommandConnection = pool.TestConnection;
+                _CreateParameterCommand = CreateCommand();
+                return;
+            }
+            throw new Exception("FreeSql.Provider.CustomAdapter 仅支持 UseConnectionFactory 方式构建 IFreeSql");
+        }
+        CustomAdapter Adapter => (_util == null ? FreeSqlCustomAdapterGlobalExtensions.DefaultAdapter : _util._orm.GetCustomAdapter());
+
+        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 ? 1 : 0;
+            else if (param is string)
+                return Adapter.UnicodeStringRawSql(param, mapColumn);
+            else if (param is char)
+                return string.Concat("'", param.ToString().Replace("'", "''").Replace('\0', ' '), "'");
+            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 Adapter.DateTimeRawSql(param);
+            else if (param is TimeSpan || param is TimeSpan?)
+                return Adapter.TimeSpanRawSql(param);
+            else if (param is byte[])
+                return Adapter.ByteRawSql(param as byte[]);
+            else if (param is IEnumerable)
+                return AddslashesIEnumerable(param, mapType, mapColumn);
+
+            return string.Concat("'", param.ToString().Replace("'", "''"), "'");
+        }
+
+        DbConnection _CreateCommandConnection;
+        DbCommand _CreateParameterCommand;
+        public override DbCommand CreateCommand()
+        {
+            if (_CreateCommandConnection != null)
+            {
+                var cmd = _CreateCommandConnection.CreateCommand();
+                cmd.Connection = null;
+                return cmd;
+            }
+            throw new Exception("FreeSql.Provider.CustomAdapter 无法使用 CreateCommand");
+        }
+        public DbParameter CreateParameter()
+        {
+            return _CreateParameterCommand.CreateParameter();
+        }
+
+        public override void ReturnConnection(IObjectPool<DbConnection> pool, Object<DbConnection> conn, Exception ex)
+        {
+            pool.Return(conn);
+        }
+
+        public override DbParameter[] GetDbParamtersByObject(string sql, object obj) => _util.GetDbParamtersByObject(sql, obj);
+    }
+}