- 增加 FreeSql.Provider.MySqlConnector 扩展方法 ExecuteMySqlBulkCopy；

Providers/FreeSql.Provider.MySqlConnector/FreeSql.Provider.MySqlConnector.csproj

@@ -23,7 +23,7 @@
   </ItemGroup>
   
 	<ItemGroup>
-		<PackageReference Include="MySqlConnector" Version="0.61.0" />
+		<PackageReference Include="MySqlConnector" Version="0.62.0-beta6" />
 	</ItemGroup>
 
 	<ItemGroup>

Providers/FreeSql.Provider.MySqlConnector/FreeSqlMySqlConnectorGlobalExtensions.cs

@@ -0,0 +1,147 @@
+using FreeSql;
+using MySql.Data.MySqlClient;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading.Tasks;
+
+public static class FreeSqlMySqlConnectorGlobalExtensions
+{
+    #region ExecuteMySqlBulkCopy
+    /// <summary>
+    /// MySql MySqlCopyBulk 批量插入功能<para></para>
+    /// 使用 IgnoreColumns/InsertColumns 设置忽略/指定导入的列<para></para>
+    /// 使用 WithConnection/WithTransaction 传入连接/事务对象<para></para>
+    /// 提示：若本方法不能满足，请使用 IInsert&lt;T&gt;.ToDataTable 方法得到 DataTable 对象后，自行处理。<para></para>
+    /// MySqlCopyBulk 与 insert into t values(..),(..),(..) 性能测试参考：<para></para>
+    /// 插入180000行，52列：28,405ms 与 38,481ms，10列：6,504ms 与 11,171ms<para></para>
+    /// 插入10000行，52列：1,142ms 与 2,234ms，10列：339ms 与 866ms<para></para>
+    /// 插入5000行，52列：657ms 与 1,136ms，10列：257ms 与 366ms<para></para>
+    /// 插入2000行，52列：451ms 与 284ms，10列：116ms 与 80ms<para></para>
+    /// 插入1000行，52列：435ms 与 239ms，10列：87ms 与 83ms<para></para>
+    /// 插入500行，52列：592ms 与 167ms，10列：100ms 与 50ms<para></para>
+    /// 插入100行，52列：47ms 与 66ms，10列：16ms 与 24ms<para></para>
+    /// 插入50行，52列：22ms 与 30ms，10列：16ms 与 34ms<para></para>
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    /// <param name="that"></param>
+    /// <param name="bulkCopyTimeout"></param>
+    public static void ExecuteMySqlBulkCopy<T>(this IInsert<T> that, int? bulkCopyTimeout = null) where T : class
+    {
+        var insert = that as FreeSql.MySql.Curd.MySqlInsert<T>;
+        if (insert == null) throw new Exception("ExecuteMySqlBulkCopy 是 FreeSql.Provider.MySqlConnector 特有的功能");
+
+        var dt = that.ToDataTable();
+        if (dt.Rows.Count == 0) return;
+
+        Action<MySqlBulkCopy> writeToServer = bulkCopy =>
+        {
+            if (bulkCopyTimeout.HasValue) bulkCopy.BulkCopyTimeout = bulkCopyTimeout.Value;
+            bulkCopy.DestinationTableName = dt.TableName;
+            bulkCopy.WriteToServer(dt);
+        };
+
+        try
+        {
+            if (insert.InternalConnection == null && insert.InternalTransaction == null)
+            {
+                using (var conn = insert.InternalOrm.Ado.MasterPool.Get())
+                {
+                    writeToServer(new MySqlBulkCopy(conn.Value as MySqlConnection));
+                }
+            }
+            else if (insert.InternalTransaction != null)
+            {
+                writeToServer(new MySqlBulkCopy(insert.InternalTransaction.Connection as MySqlConnection));
+            }
+            else if (insert.InternalConnection != null)
+            {
+                var conn = insert.InternalConnection as MySqlConnection;
+                var isNotOpen = false;
+                if (conn.State != System.Data.ConnectionState.Open)
+                {
+                    isNotOpen = true;
+                    conn.Open();
+                }
+                try
+                {
+                    writeToServer(new MySqlBulkCopy(conn));
+                }
+                finally
+                {
+                    if (isNotOpen)
+                        conn.Close();
+                }
+            }
+            else
+            {
+                throw new NotImplementedException("ExecuteMySqlBulkCopy 未实现错误，请反馈给作者");
+            }
+        }
+        finally
+        {
+            dt.Clear();
+        }
+    }
+#if net40
+#else
+    async public static Task ExecuteMySqlBulkCopyAsync<T>(this IInsert<T> that, int? bulkCopyTimeout = null) where T : class
+    {
+        var insert = that as FreeSql.MySql.Curd.MySqlInsert<T>;
+        if (insert == null) throw new Exception("ExecuteMySqlBulkCopyAsync 是 FreeSql.Provider.MySqlConnector 特有的功能");
+
+        var dt = that.ToDataTable();
+        if (dt.Rows.Count == 0) return;
+
+        Func<MySqlBulkCopy, Task> writeToServer = bulkCopy =>
+        {
+            if (bulkCopyTimeout.HasValue) bulkCopy.BulkCopyTimeout = bulkCopyTimeout.Value;
+            bulkCopy.DestinationTableName = dt.TableName;
+            return bulkCopy.WriteToServerAsync(dt);
+        };
+
+        try
+        {
+            if (insert.InternalConnection == null && insert.InternalTransaction == null)
+            {
+                using (var conn = insert.InternalOrm.Ado.MasterPool.Get())
+                {
+                    await writeToServer(new MySqlBulkCopy(conn.Value as MySqlConnection));
+                }
+            }
+            else if (insert.InternalTransaction != null)
+            {
+                await writeToServer(new MySqlBulkCopy(insert.InternalTransaction.Connection as MySqlConnection));
+            }
+            else if (insert.InternalConnection != null)
+            {
+                var conn = insert.InternalConnection as MySqlConnection;
+                var isNotOpen = false;
+                if (conn.State != System.Data.ConnectionState.Open)
+                {
+                    isNotOpen = true;
+                    conn.Open();
+                }
+                try
+                {
+                    await writeToServer(new MySqlBulkCopy(conn));
+                }
+                finally
+                {
+                    if (isNotOpen)
+                        conn.Close();
+                }
+            }
+            else
+            {
+                throw new NotImplementedException("ExecuteMySqlBulkCopyAsync 未实现错误，请反馈给作者");
+            }
+        }
+        finally
+        {
+            dt.Clear();
+        }
+    }
+#endif
+    #endregion
+}