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277 lines
14 KiB
C#
277 lines
14 KiB
C#
using FreeSql;
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Threading.Tasks;
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using System.Threading;
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using FreeSql.Internal.Model;
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using FreeSql.Internal.CommonProvider;
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using FreeSql.Internal.ObjectPool;
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using System.Linq;
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using System.Data.Common;
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#if MySqlConnector
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using MySqlConnector;
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#else
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using MySql.Data.MySqlClient;
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#endif
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public static class FreeSqlMySqlConnectorGlobalExtensions
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{
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#region ExecuteMySqlBulkCopy
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/// <summary>
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/// 批量插入或更新（操作的字段数量超过 2000 时收益大）<para></para>
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/// 实现原理：使用 MySqlBulkCopy 插入临时表，再执行 INSERT INTO t1 select * from #temp ON DUPLICATE KEY UPDATE ...
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="that"></param>
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/// <param name="bulkCopyTimeout"></param>
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/// <returns></returns>
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public static int ExecuteMySqlBulkCopy<T>(this IInsertOrUpdate<T> that, int? bulkCopyTimeout = null) where T : class
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{
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var upsert = that as InsertOrUpdateProvider<T>;
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if (upsert._source.Any() != true || upsert._tempPrimarys.Any() == false) return 0;
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var state = ExecuteMySqlBulkCopyState(upsert);
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return UpdateProvider.ExecuteBulkUpsert(upsert, state, insert => insert.ExecuteMySqlBulkCopy(bulkCopyTimeout));
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}
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static NativeTuple<string, string, string, string, string[]> ExecuteMySqlBulkCopyState<T>(InsertOrUpdateProvider<T> upsert) where T : class
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{
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if (upsert._source.Any() != true) return null;
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var _table = upsert._table;
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var _commonUtils = upsert._commonUtils;
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var updateTableName = upsert._tableRule?.Invoke(_table.DbName) ?? _table.DbName;
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var tempTableName = $"temp_{Guid.NewGuid().ToString("N")}";
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if (upsert._orm.CodeFirst.IsSyncStructureToLower) tempTableName = tempTableName.ToLower();
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if (upsert._orm.CodeFirst.IsSyncStructureToUpper) tempTableName = tempTableName.ToUpper();
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if (upsert._connection == null && upsert._orm.Ado.TransactionCurrentThread != null)
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upsert.WithTransaction(upsert._orm.Ado.TransactionCurrentThread);
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var sb = new StringBuilder().Append("CREATE TEMPORARY TABLE ").Append(_commonUtils.QuoteSqlName(tempTableName)).Append(" ( ");
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foreach (var col in _table.Columns.Values)
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{
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sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(col.Attribute.Name)).Append(" ").Append(col.Attribute.DbType.Replace("NOT NULL", ""));
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sb.Append(",");
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}
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var sql1 = sb.Remove(sb.Length - 1, 1).Append(" \r\n) Engine=InnoDB;").ToString();
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try
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{
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upsert._sourceSql = $"select __**__ from {tempTableName}";
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var sql2 = upsert.ToSql();
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if (string.IsNullOrWhiteSpace(sql2) == false)
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{
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var field = sql2.Substring(sql2.IndexOf("`(") + 2);
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field = field.Remove(field.IndexOf(upsert._sourceSql)).TrimEnd().TrimEnd(')');
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sql2 = sql2.Replace(upsert._sourceSql, $"select {field} from {tempTableName}");
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}
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var sql3 = $"DROP TABLE {_commonUtils.QuoteSqlName(tempTableName)}";
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return NativeTuple.Create(sql1, sql2, sql3, tempTableName, _table.Columns.Values.Select(a => a.Attribute.Name).ToArray());
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}
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finally
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{
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upsert._sourceSql = null;
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}
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}
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/// <summary>
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/// 批量更新（更新字段数量超过 2000 时收益大）<para></para>
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/// 实现原理：使用 MySqlBulkCopy 插入临时表，再使用 UPDATE INNER JOIN 联表更新
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="that"></param>
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/// <param name="bulkCopyTimeout"></param>
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/// <returns></returns>
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public static int ExecuteMySqlBulkCopy<T>(this IUpdate<T> that, int? bulkCopyTimeout = null) where T : class
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{
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var update = that as UpdateProvider<T>;
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if (update._source.Any() != true || update._tempPrimarys.Any() == false) return 0;
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var state = ExecuteMySqlBulkCopyState(update);
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return UpdateProvider.ExecuteBulkUpdate(update, state, insert => insert.ExecuteMySqlBulkCopy(bulkCopyTimeout));
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}
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static NativeTuple<string, string, string, string, string[]> ExecuteMySqlBulkCopyState<T>(UpdateProvider<T> update) where T : class
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{
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if (update._source.Any() != true) return null;
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var _table = update._table;
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var _commonUtils = update._commonUtils;
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var updateTableName = update._tableRule?.Invoke(_table.DbName) ?? _table.DbName;
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var tempTableName = $"temp_{Guid.NewGuid().ToString("N")}";
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if (update._orm.CodeFirst.IsSyncStructureToLower) tempTableName = tempTableName.ToLower();
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if (update._orm.CodeFirst.IsSyncStructureToUpper) tempTableName = tempTableName.ToUpper();
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if (update._connection == null && update._orm.Ado.TransactionCurrentThread != null)
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update.WithTransaction(update._orm.Ado.TransactionCurrentThread);
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var sb = new StringBuilder().Append("CREATE TEMPORARY TABLE ").Append(_commonUtils.QuoteSqlName(tempTableName)).Append(" ( ");
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var setColumns = new List<string>();
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var pkColumns = new List<string>();
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foreach (var col in _table.Columns.Values)
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{
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if (update._tempPrimarys.Any(a => a.CsName == col.CsName)) pkColumns.Add(col.Attribute.Name);
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else if (col.Attribute.IsIdentity == false && col.Attribute.IsVersion == false && update._ignore.ContainsKey(col.Attribute.Name) == false) setColumns.Add(col.Attribute.Name);
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else continue;
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sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(col.Attribute.Name)).Append(" ").Append(col.Attribute.DbType.Replace("NOT NULL", ""));
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sb.Append(",");
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}
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var sql1 = sb.Remove(sb.Length - 1, 1).Append(" \r\n) Engine=InnoDB;").ToString();
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sb.Clear().Append("UPDATE ").Append(_commonUtils.QuoteSqlName(updateTableName)).Append(" a ")
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.Append(" \r\nINNER JOIN ").Append(_commonUtils.QuoteSqlName(tempTableName)).Append(" b ON ").Append(string.Join(" AND ", pkColumns.Select(col => $"a.{_commonUtils.QuoteSqlName(col)} = b.{_commonUtils.QuoteSqlName(col)}")))
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.Append(" \r\nSET \r\n ").Append(string.Join(", \r\n ", setColumns.Select(col => $"a.{_commonUtils.QuoteSqlName(col)} = b.{_commonUtils.QuoteSqlName(col)}")));
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var sql2 = sb.ToString();
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sb.Clear();
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var sql3 = $"DROP TABLE {_commonUtils.QuoteSqlName(tempTableName)}";
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return NativeTuple.Create(sql1, sql2, sql3, tempTableName, pkColumns.Concat(setColumns).ToArray());
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}
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/// <summary>
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/// MySql MySqlCopyBulk 批量插入功能<para></para>
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/// 使用 IgnoreColumns/InsertColumns 设置忽略/指定导入的列<para></para>
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/// 使用 WithConnection/WithTransaction 传入连接/事务对象<para></para>
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/// 提示：若本方法不能满足，请使用 IInsert<T>.ToDataTable 方法得到 DataTable 对象后，自行处理。<para></para>
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/// MySqlCopyBulk 与 insert into t values(..),(..),(..) 性能测试参考：<para></para>
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/// 插入180000行，52列：28,405ms 与 38,481ms，10列：6,504ms 与 11,171ms<para></para>
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/// 插入10000行，52列：1,142ms 与 2,234ms，10列：339ms 与 866ms<para></para>
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/// 插入5000行，52列：657ms 与 1,136ms，10列：257ms 与 366ms<para></para>
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/// 插入2000行，52列：451ms 与 284ms，10列：116ms 与 80ms<para></para>
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/// 插入1000行，52列：435ms 与 239ms，10列：87ms 与 83ms<para></para>
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/// 插入500行，52列：592ms 与 167ms，10列：100ms 与 50ms<para></para>
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/// 插入100行，52列：47ms 与 66ms，10列：16ms 与 24ms<para></para>
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/// 插入50行，52列：22ms 与 30ms，10列：16ms 与 34ms<para></para>
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="that"></param>
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/// <param name="bulkCopyTimeout"></param>
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public static void ExecuteMySqlBulkCopy<T>(this IInsert<T> that, int? bulkCopyTimeout = null) where T : class
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{
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var insert = that as FreeSql.MySql.Curd.MySqlInsert<T>;
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if (insert == null) throw new Exception(CoreStrings.S_Features_Unique("ExecuteMySqlBulkCopy", "MySqlConnector"));
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var dt = that.ToDataTable();
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if (dt.Rows.Count == 0) return;
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Action<MySqlBulkCopy> writeToServer = bulkCopy =>
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{
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if (bulkCopyTimeout.HasValue) bulkCopy.BulkCopyTimeout = bulkCopyTimeout.Value;
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bulkCopy.DestinationTableName = dt.TableName;
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for (int i = 0; i < dt.Columns.Count; i++)
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bulkCopy.ColumnMappings.Add(new MySqlBulkCopyColumnMapping(i, dt.Columns[i].ColumnName));
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bulkCopy.WriteToServer(dt);
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};
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try
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{
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if (insert.InternalConnection == null && insert.InternalTransaction == null)
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{
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if (insert._orm.Ado?.TransactionCurrentThread != null)
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writeToServer(new MySqlBulkCopy(insert._orm.Ado.TransactionCurrentThread.Connection as MySqlConnection, insert._orm.Ado?.TransactionCurrentThread as MySqlTransaction));
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else
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using (var conn = insert.InternalOrm.Ado.MasterPool.Get())
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writeToServer(new MySqlBulkCopy(conn.Value as MySqlConnection));
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}
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else if (insert.InternalTransaction != null)
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{
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writeToServer(new MySqlBulkCopy(insert.InternalTransaction.Connection as MySqlConnection, insert.InternalTransaction as MySqlTransaction));
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}
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else if (insert.InternalConnection != null)
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{
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var conn = insert.InternalConnection as MySqlConnection;
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var isNotOpen = false;
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if (conn.State != System.Data.ConnectionState.Open)
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{
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isNotOpen = true;
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conn.Open();
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}
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try
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{
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writeToServer(new MySqlBulkCopy(conn));
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}
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finally
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{
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if (isNotOpen)
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conn.Close();
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}
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}
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else
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{
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throw new NotImplementedException($"ExecuteMySqlBulkCopy {CoreStrings.S_Not_Implemented_FeedBack}");
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}
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}
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finally
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{
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dt.Clear();
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}
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}
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#if net40
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#else
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public static Task<int> ExecuteMySqlBulkCopyAsync<T>(this IInsertOrUpdate<T> that, int? bulkCopyTimeout = null, CancellationToken cancellationToken = default) where T : class
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{
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var upsert = that as InsertOrUpdateProvider<T>;
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if (upsert._source.Any() != true || upsert._tempPrimarys.Any() == false) return Task.FromResult(0);
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var state = ExecuteMySqlBulkCopyState(upsert);
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return UpdateProvider.ExecuteBulkUpsertAsync(upsert, state, insert => insert.ExecuteMySqlBulkCopyAsync(bulkCopyTimeout, cancellationToken));
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}
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public static Task<int> ExecuteMySqlBulkCopyAsync<T>(this IUpdate<T> that, int? bulkCopyTimeout = null, CancellationToken cancellationToken = default) where T : class
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{
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var update = that as UpdateProvider<T>;
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if (update._source.Any() != true || update._tempPrimarys.Any() == false) return Task.FromResult(0);
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var state = ExecuteMySqlBulkCopyState(update);
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return UpdateProvider.ExecuteBulkUpdateAsync(update, state, insert => insert.ExecuteMySqlBulkCopyAsync(bulkCopyTimeout, cancellationToken));
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}
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async public static Task ExecuteMySqlBulkCopyAsync<T>(this IInsert<T> that, int? bulkCopyTimeout = null, CancellationToken cancellationToken = default) where T : class
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{
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var insert = that as FreeSql.MySql.Curd.MySqlInsert<T>;
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if (insert == null) throw new Exception(CoreStrings.S_Features_Unique("ExecuteMySqlBulkCopyAsync", "MySqlConnector"));
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var dt = that.ToDataTable();
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if (dt.Rows.Count == 0) return;
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Func<MySqlBulkCopy, Task> writeToServer = async bulkCopy =>
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{
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if (bulkCopyTimeout.HasValue) bulkCopy.BulkCopyTimeout = bulkCopyTimeout.Value;
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bulkCopy.DestinationTableName = dt.TableName;
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for (int i = 0; i < dt.Columns.Count; i++)
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bulkCopy.ColumnMappings.Add(new MySqlBulkCopyColumnMapping(i, dt.Columns[i].ColumnName));
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await bulkCopy.WriteToServerAsync(dt, cancellationToken);
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};
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try
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{
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if (insert.InternalConnection == null && insert.InternalTransaction == null)
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{
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if (insert._orm.Ado?.TransactionCurrentThread != null)
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await writeToServer(new MySqlBulkCopy(insert._orm.Ado.TransactionCurrentThread.Connection as MySqlConnection, insert._orm.Ado?.TransactionCurrentThread as MySqlTransaction));
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else
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using (var conn = insert.InternalOrm.Ado.MasterPool.Get())
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await writeToServer(new MySqlBulkCopy(conn.Value as MySqlConnection));
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}
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else if (insert.InternalTransaction != null)
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{
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await writeToServer(new MySqlBulkCopy(insert.InternalTransaction.Connection as MySqlConnection, insert.InternalTransaction as MySqlTransaction));
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}
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else if (insert.InternalConnection != null)
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{
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var conn = insert.InternalConnection as MySqlConnection;
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var isNotOpen = false;
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if (conn.State != System.Data.ConnectionState.Open)
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{
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isNotOpen = true;
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await conn.OpenAsync(cancellationToken);
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}
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try
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{
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await writeToServer(new MySqlBulkCopy(conn));
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}
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finally
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{
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if (isNotOpen)
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await conn.CloseAsync();
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}
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}
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else
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{
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throw new NotImplementedException($"ExecuteMySqlBulkCopyAsync {CoreStrings.S_Not_Implemented_FeedBack}");
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}
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}
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finally
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{
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dt.Clear();
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}
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}
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#endif
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#endregion
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}
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