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894 lines
33 KiB
894 lines
33 KiB
#if MYSQL_6_9 || MYSQL_6_10
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/* 2021.11.07 */
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using Externals.MySql.Data.MySqlClient;
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Net;
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using System.Text;
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using System.Transactions;
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using static Apewer.Source.SourceUtility;
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namespace Apewer.Source
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{
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/// <summary></summary>
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public class MySql : IDbClient
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{
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#region 基础
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private Timeout _timeout = null;
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private string _connectionstring = null;
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/// <summary>获取或设置日志记录。</summary>
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public Logger Logger { get; set; }
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/// <summary>超时设定。</summary>
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public Timeout Timeout { get => _timeout; }
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/// <summary>创建实例。</summary>
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public MySql(string connnectionString, Timeout timeout = default)
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{
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_connectionstring = connnectionString;
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_timeout = timeout ?? Timeout.Default;
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}
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/// <summary>获取当前的 MySqlConnection 对象。</summary>
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public IDbConnection Connection { get => _connection; }
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/// <summary>构建连接字符串以创建实例。</summary>
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public MySql(string address, string store, string user, string pass, Timeout timeout = null)
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{
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_timeout = timeout ?? Timeout.Default;
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var a = address ?? "";
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var s = store ?? "";
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var u = user ?? "";
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var p = pass ?? "";
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var cs = $"server={a}; database={s}; uid={u}; pwd={p}; ";
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_connectionstring = cs;
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_storename = new Class<string>(s);
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}
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#endregion
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#region 日志。
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private void LogError(string action, Exception ex, string addtion)
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{
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var logger = Logger;
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if (logger != null) logger.Error(this, "MySQL", action, ex.GetType().FullName, ex.Message, addtion);
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}
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#endregion
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#region Connection
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private MySqlConnection _connection = null;
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/// <summary></summary>
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public bool Online { get => _connection == null ? false : (_connection.State == ConnectionState.Open); }
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/// <summary>连接字符串。</summary>
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public string ConnectionString { get => _connectionstring; }
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/// <summary></summary>
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public string Connect()
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{
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if (_connection == null)
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{
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_connection = new MySqlConnection();
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_connection.ConnectionString = _connectionstring;
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}
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else
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{
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if (_connection.State == ConnectionState.Open) return null;
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}
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// try
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{
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_connection.Open();
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switch (_connection.State)
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{
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case ConnectionState.Open: return null;
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default: return $"连接失败,当前处于 {_connection.State} 状态。";
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}
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}
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// catch (Exception ex)
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// {
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// LogError("Connection", ex, _connection.ConnectionString);
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// Close();
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// return false;
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// }
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}
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/// <summary></summary>
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public void Close()
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{
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if (_connection != null)
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{
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if (_transaction != null)
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{
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if (_autocommit) Commit();
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else Rollback();
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}
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_connection.Close();
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_connection.Dispose();
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_connection = null;
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}
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}
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/// <summary></summary>
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public void Dispose() { Close(); }
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#endregion
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#region Transaction
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private IDbTransaction _transaction = null;
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private bool _autocommit = false;
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/// <summary>启动事务。</summary>
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public string Begin(bool commit = true) => Begin(commit, null);
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/// <summary>启动事务。</summary>
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public string Begin(bool commit, Class<System.Data.IsolationLevel> isolation)
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{
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if (Connect() != null) return "未连接。";
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if (_transaction != null) return "存在已启动的事务,无法再次启动。";
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try
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{
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_transaction = isolation ? _connection.BeginTransaction(isolation.Value) : _connection.BeginTransaction();
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_autocommit = commit;
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return null;
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}
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catch (Exception ex)
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{
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Logger.Error(nameof(MySql), "Commit", ex.Message());
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return ex.Message();
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}
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}
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/// <summary>提交事务。</summary>
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public string Commit()
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{
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if (_transaction == null) return "事务不存在。";
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try
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{
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_transaction.Commit();
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RuntimeUtility.Dispose(_transaction);
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_transaction = null;
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return null;
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}
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catch (Exception ex)
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{
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RuntimeUtility.Dispose(_transaction);
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_transaction = null;
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Logger.Error(nameof(MySql), "Commit", ex.Message());
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return ex.Message();
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}
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}
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/// <summary>从挂起状态回滚事务。</summary>
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public string Rollback()
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{
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if (_transaction == null) return "事务不存在。";
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try
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{
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_transaction.Rollback();
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RuntimeUtility.Dispose(_transaction);
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_transaction = null;
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return null;
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}
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catch (Exception ex)
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{
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RuntimeUtility.Dispose(_transaction);
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_transaction = null;
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Logger.Error(nameof(MySql), "Rollback", ex.Message());
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return ex.Message();
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}
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}
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#endregion
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#region SQL
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/// <summary></summary>
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public IQuery Query(string sql, IEnumerable<IDataParameter> parameters)
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{
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if (sql.IsBlank()) return Example.InvalidQueryStatement;
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var connected = Connect();
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if (connected.NotEmpty()) return Example.InvalidQueryConnection;
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try
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{
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using (var command = new MySqlCommand())
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{
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command.Connection = _connection;
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command.CommandTimeout = _timeout.Query;
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command.CommandText = sql;
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if (parameters != null)
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{
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foreach (var p in parameters)
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{
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if (p != null) command.Parameters.Add(p);
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}
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}
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using (var ds = new DataSet())
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{
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using (var da = new MySqlDataAdapter(command))
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{
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var name = "table_" + Guid.NewGuid().ToString("n");
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da.Fill(ds, name);
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var table = ds.Tables[name];
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return new Query(table);
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}
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}
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}
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}
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catch (Exception exception)
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{
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Logger.Error(nameof(MySql), "Query", exception, sql);
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return new Query(exception);
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}
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}
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/// <summary></summary>
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public IExecute Execute(string sql, IEnumerable<IDataParameter> parameters)
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{
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if (sql.IsBlank()) return Example.InvalidExecuteStatement;
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var connected = Connect();
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if (connected.NotEmpty()) return new Execute(false, connected);
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var inTransaction = _transaction != null;
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if (!inTransaction) Begin();
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try
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{
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using (var command = new MySqlCommand())
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{
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command.Connection = _connection;
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command.Transaction = (MySqlTransaction)_transaction;
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command.CommandTimeout = _timeout.Execute;
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command.CommandText = sql;
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if (parameters != null)
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{
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foreach (var parameter in parameters)
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{
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if (parameter == null) continue;
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command.Parameters.Add(parameter);
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}
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}
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var rows = command.ExecuteNonQuery();
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if (!inTransaction) Commit(); // todo 此处应该检查事务提交产生的错误。
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return new Execute(true, rows);
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}
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}
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catch (Exception exception)
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{
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Logger.Error(nameof(MySql), "Execute", exception, sql);
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if (!inTransaction) Rollback();
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return new Execute(exception);
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}
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}
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/// <summary></summary>
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public IQuery Query(string sql) => Query(sql, null);
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/// <summary></summary>
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public IExecute Execute(string sql, IEnumerable<Parameter> parameters)
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{
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var dps = null as List<IDataParameter>;
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if (parameters != null)
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{
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var count = parameters.Count();
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dps = new List<IDataParameter>(count);
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foreach (var p in parameters)
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{
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var dp = Parameter(p);
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dps.Add(dp);
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}
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}
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return Execute(sql, dps);
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}
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/// <summary></summary>
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public IExecute Execute(string sql) => Execute(sql, null as IEnumerable<IDataParameter>);
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#endregion
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#region ORM
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private Class<string> _storename = null;
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private string StoreName()
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{
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if (_storename) return _storename.Value;
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_storename = new Class<string>(Internals.TextHelper.ParseConnectionString(_connectionstring).GetValue("database"));
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return _storename.Value ?? "";
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}
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private string[] FirstColumn(string sql)
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{
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using (var query = Query(sql) as Query) return query.ReadColumn();
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}
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/// <summary></summary>
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public string[] TableNames()
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{
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var sql = TextUtility.Merge("select table_name from information_schema.tables where table_schema='", StoreName(), "' and table_type='base table';");
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return FirstColumn(sql);
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}
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/// <summary></summary>
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public string[] ViewNames()
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{
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var sql = TextUtility.Merge("select table_name from information_schema.tables where table_schema='", StoreName(), "' and table_type='view';");
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return FirstColumn(sql);
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}
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/// <summary></summary>
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public string[] ColumnNames(string table)
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{
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var sql = TextUtility.Merge("select column_name from information_schema.columns where table_schema='", StoreName(), "' and table_name='", TextUtility.AntiInject(table), "';");
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return FirstColumn(sql);
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}
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/// <summary>获取用于创建表的语句。</summary>
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private string GetCreateStetement(TableStructure structure)
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{
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// 检查现存表。
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var exists = false;
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var tables = TableNames();
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if (tables.Length > 0)
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{
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var lower = structure.Name.ToLower();
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foreach (var table in tables)
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{
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if (TextUtility.IsBlank(table)) continue;
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if (table.ToLower() == lower)
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{
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exists = true;
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break;
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}
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}
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}
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if (exists)
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{
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var columns = ColumnNames(structure.Name);
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if (columns.Length > 0)
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{
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var lower = new List<string>(columns.Length);
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var added = 0;
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foreach (var column in columns)
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{
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if (TextUtility.IsBlank(column)) continue;
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lower.Add(column.ToLower());
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added++;
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}
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lower.Capacity = added;
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columns = lower.ToArray();
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}
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var sqlsb = new StringBuilder();
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foreach (var column in structure.Columns)
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{
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// 检查 Independent 特性。
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if (structure.Independent && column.Independent) continue;
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// 去重。
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var lower = column.Field.ToLower();
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if (columns.Contains(lower)) continue;
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var type = Declaration(column);
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if (type.IsEmpty()) return TextUtility.Merge("类型 ", column.Type.ToString(), " 不受支持。");
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// alter table `_record` add column `_index` bigint;
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sqlsb.Append("alter table `", structure.Name, "` add column ", type, "; ");
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}
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var sql = sqlsb.ToString();
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return sql;
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}
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else
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{
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// create table _record (`_index` bigint, `_key` varchar(255), `_text` longtext) engine=innodb default charset=utf8mb4
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var columns = new List<string>(structure.Columns.Length);
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var columnsAdded = 0;
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var primarykey = null as string;
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foreach (var column in structure.Columns)
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{
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// 检查 Independent 特性。
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if (structure.Independent && column.Independent) continue;
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// 字段。
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var type = Declaration(column);
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if (type.IsEmpty()) return TextUtility.Merge("类型 ", column.Type.ToString(), " 不受支持。");
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columns.Add(type);
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columnsAdded++;
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// 主键。
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if (column.Property.Name == "Key") primarykey = column.Field;
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}
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columns.Capacity = columnsAdded;
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var table = structure.Name;
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var joined = string.Join(", ", columns);
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// 设置主键。
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string sql;
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if (!structure.Independent && !string.IsNullOrEmpty(primarykey))
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{
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sql = TextUtility.Merge("create table `", table, "`(", joined, ", primary key (", primarykey, ") ) engine=innodb default charset=utf8mb4; ");
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}
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else
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{
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sql = TextUtility.Merge("create table `", table, "`(", joined, ") engine=innodb default charset=utf8mb4; ");
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}
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return sql;
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}
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}
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/// <summary></summary>
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private string Initialize(Type model, out string sql)
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{
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if (model == null)
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{
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sql = null;
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return "指定的类型无效。";
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}
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var structure = TableStructure.Parse(model);
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if (structure == null)
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{
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sql = null;
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return "无法解析记录模型。";
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}
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// 连接数据库。
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var connect = Connect();
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if (connect.NotEmpty())
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{
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sql = null;
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return $"连接数据库失败。({connect})";
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}
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sql = GetCreateStetement(structure);
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if (sql.NotEmpty())
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{
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var execute = Execute(sql);
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if (!execute.Success) return execute.Message;
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}
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return null;
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}
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/// <summary></summary>
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public string Initialize(Type model) => Initialize(model, out string sql);
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/// <summary></summary>
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public string Initialize<T>() where T : class, new() => Initialize(typeof(T));
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/// <summary></summary>
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public string Initialize(Record model) => (model == null) ? "参数无效。" : Initialize(model.GetType());
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/// <summary>插入记录。返回错误信息。</summary>
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public string Insert(object record, string table = null)
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{
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if (record == null) return "参数无效。";
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SourceUtility.FixProperties(record);
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var structure = TableStructure.Parse(record.GetType());
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if (structure == null) return "无法解析记录模型。";
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if (string.IsNullOrEmpty(table)) table = structure.Name;
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if (string.IsNullOrEmpty(table)) return "表名称无效。";
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var ps = structure.CreateParameters(record, Parameter);
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var psc = ps.Length;
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if (psc < 1) return "数据模型不包含字段。";
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var names = new List<string>(psc);
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var values = new List<string>(psc);
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foreach (var p in ps)
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{
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var pn = p.ParameterName;
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names.Add("`" + p + "`");
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values.Add("@" + p);
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}
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var ns = string.Join(", ", names);
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var vs = string.Join(", ", values);
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var sql = $"insert into `{table}` ({ns}) values ({vs}); ";
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var execute = Execute(sql, ps);
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if (execute.Success) return TextUtility.Empty;
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return execute.Message;
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}
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/// <summary>更新记录,实体中的 Key 属性不被更新。返回错误信息。</summary>
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/// <remarks>无法更新带有 Independent 特性的模型(缺少 Key 属性)。</remarks>
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public string Update(IRecord record, string table = null)
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{
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if (record == null) return "参数无效。";
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FixProperties(record);
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SetUpdated(record);
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var structure = TableStructure.Parse(record.GetType());
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if (structure == null) return "无法解析记录模型。";
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if (structure.Independent) return "无法更新带有 Independent 特性的模型。";
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if (string.IsNullOrEmpty(table)) table = structure.Name;
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if (string.IsNullOrEmpty(table)) return "表名称无效。";
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var ps = structure.CreateParameters(record, Parameter, "_key");
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var psc = ps.Length;
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if (psc < 1) return "数据模型不包含字段。";
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var items = new List<string>(psc);
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foreach (var p in ps)
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{
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var pn = p.ParameterName;
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items.Add(TextUtility.Merge("`", pn, "` = @", pn));
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}
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var key = record.Key.SafeKey();
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var sql = $"update `{table}` set {string.Join(", ", items)} where `_key`='{key}'; ";
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var execute = Execute(sql, ps);
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if (execute.Success) return TextUtility.Empty;
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return execute.Message;
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}
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/// <summary></summary>
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public Result<object[]> Query(Type model, string sql, IEnumerable<IDataParameter> parameters = null) => SourceUtility.Query(this, model, sql, parameters);
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/// <summary></summary>
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public Result<T[]> Query<T>(string sql, IEnumerable<IDataParameter> parameters = null) where T : class, new()
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{
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var query = Query(sql, parameters);
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if (!query.Success) return new Result<T[]>(query.Message);
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var records = query.Fill<T>();
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query.Dispose();
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var result = new Result<T[]>(records);
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return result;
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}
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/// <summary>获取所有记录。Flag 为 0 时将忽略 Flag 条件。</summary>
|
|
public Result<object[]> Query(Type model, long flag = 0) => SourceUtility.Query(this, model, (tn) =>
|
|
{
|
|
if (flag == 0) return $"select * from `{tn}`; ";
|
|
return $"select * from `{tn}` where `_flag`={flag}; ";
|
|
});
|
|
|
|
/// <summary>获取所有记录。Flag 为 0 时将忽略 Flag 条件。</summary>
|
|
public Result<T[]> Query<T>(long flag = 0) where T : class, IRecord, new() => SourceUtility.Query<T>(this, (tn) =>
|
|
{
|
|
if (flag == 0) return $"select * from `{tn}`; ";
|
|
return $"select * from `{tn}` where `_flag`={flag}; ";
|
|
});
|
|
|
|
/// <summary>获取记录。</summary>
|
|
/// <param name="model">填充的记录模型。</param>
|
|
/// <param name="skip">要跳过的记录数,可用最小值为 0。</param>
|
|
/// <param name="count">要获取的记录数,可用最小值为 1。</param>
|
|
public Result<object[]> Query(Type model, int skip, int count)
|
|
{
|
|
if (skip < 0) return new Result<object[]>("参数 skip 超出了范围。");
|
|
if (count < 1) return new Result<object[]>("参数 count 超出了范围。");
|
|
return SourceUtility.Query(this, model, (tn) => $"select * from `{tn}` limit {skip}, {count}; ");
|
|
}
|
|
|
|
/// <summary>获取记录。</summary>
|
|
/// <param name="skip">要跳过的记录数,可用最小值为 0。</param>
|
|
/// <param name="count">要获取的记录数,可用最小值为 1。</param>
|
|
public Result<T[]> Query<T>(int skip, int count) where T : class, IRecord, new()
|
|
{
|
|
if (skip < 0) return new Result<T[]>("参数 skip 超出了范围。");
|
|
if (count < 1) return new Result<T[]>("参数 count 超出了范围。");
|
|
return SourceUtility.Query<T>(this, (tn) => $"select * from `{tn}` limit {skip}, {count}; ");
|
|
}
|
|
|
|
/// <summary>获取记录。</summary>
|
|
public Result<object> Get(Type model, string key, long flag = 0) => SourceUtility.Get(this, model, key, (tn, sk) =>
|
|
{
|
|
if (flag == 0) return $"select * from `{tn}` where `_key`='{sk}' limit 1;";
|
|
return $"select * from `{tn}` where `_key`='{sk}' and `_flag`={flag} limit 1;";
|
|
});
|
|
|
|
/// <summary>获取记录。</summary>
|
|
public Result<T> Get<T>(string key, long flag = 0) where T : class, IRecord, new() => SourceUtility.Get<T>(this, key, (tn, sk) =>
|
|
{
|
|
if (flag == 0) return $"select * from `{tn}` where `_key`='{sk}' limit 1;";
|
|
return $"select * from `{tn}` where `_key`='{sk}' and `_flag`={flag} limit 1;";
|
|
});
|
|
|
|
/// <summary>>获取指定类型的主键,按 Flag 属性筛选。</summary>
|
|
public Result<string[]> Keys(Type model, long flag = 0) => SourceUtility.Keys(this, model, (tn) =>
|
|
{
|
|
if (flag == 0) return $"select `_key` from `{tn}`;";
|
|
return $"select `_key` from `{tn}` where `_flag`={flag};";
|
|
});
|
|
|
|
/// <summary>>获取指定类型的主键,按 Flag 属性筛选。</summary>
|
|
public Result<string[]> Keys<T>(long flag = 0) where T : class, IRecord, new() => Keys(typeof(T), flag);
|
|
|
|
/// <summary>对表添加列,返回错误信息。</summary>
|
|
/// <typeparam name="T">记录类型。</typeparam>
|
|
/// <param name="column">列名称。</param>
|
|
/// <param name="type">字段类型。</param>
|
|
/// <param name="length">字段长度,仅对 VarChar 和 NVarChar 类型有效。</param>
|
|
/// <returns></returns>
|
|
public string AddColumn<T>(string column, ColumnType type, int length = 0) where T : class, IRecord
|
|
{
|
|
var columnName = SafeColumn(column);
|
|
if (columnName.IsEmpty()) return "列名无效。";
|
|
|
|
var ta = TableAttribute.Parse(typeof(T));
|
|
if (ta == null) return "无法解析记录模型。";
|
|
var tableName = ta.Name;
|
|
|
|
var columeType = "";
|
|
switch (type)
|
|
{
|
|
case ColumnType.Integer:
|
|
columeType = "bigint";
|
|
break;
|
|
case ColumnType.Float:
|
|
columeType = "double";
|
|
break;
|
|
case ColumnType.Bytes:
|
|
columeType = "longblob";
|
|
break;
|
|
case ColumnType.DateTime:
|
|
columeType = "datetime";
|
|
break;
|
|
case ColumnType.VarChar:
|
|
case ColumnType.NVarChar:
|
|
columeType = $"varchar({length})";
|
|
break;
|
|
case ColumnType.VarChar191:
|
|
case ColumnType.NVarChar191:
|
|
columeType = "varchar(191)";
|
|
break;
|
|
case ColumnType.VarCharMax:
|
|
case ColumnType.NVarCharMax:
|
|
columeType = "varchar(max)";
|
|
break;
|
|
case ColumnType.Text:
|
|
columeType = "longtext";
|
|
break;
|
|
}
|
|
if (columeType.IsEmpty()) return "类型不支持。";
|
|
|
|
var sql = $"alter table `{tableName}` add {columnName} {columeType}; ";
|
|
var execute = Execute(sql) as Execute;
|
|
var error = execute.Message;
|
|
return error;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region static
|
|
|
|
/// <summary>对文本转义,符合 SQL 安全性。可根据字段类型限制 UTF-8 字节数,默认为 0 时不限制字节数。</summary>
|
|
public static string Escape(string text, int bytes = 0)
|
|
{
|
|
if (text.IsEmpty()) return "";
|
|
|
|
var t = text ?? "";
|
|
t = t.Replace("\\", "\\\\");
|
|
t = t.Replace("'", "\\'");
|
|
t = t.Replace("\n", "\\n");
|
|
t = t.Replace("\r", "\\r");
|
|
t = t.Replace("\b", "\\b");
|
|
t = t.Replace("\t", "\\t");
|
|
t = t.Replace("\f", "\\f");
|
|
|
|
if (bytes > 5)
|
|
{
|
|
if (t.Bytes(Encoding.UTF8).Length > bytes)
|
|
{
|
|
while (true)
|
|
{
|
|
t = t.Substring(0, t.Length - 1);
|
|
if (t.Bytes(Encoding.UTF8).Length <= (bytes - 4)) break;
|
|
}
|
|
t = t + " ...";
|
|
}
|
|
}
|
|
|
|
return t;
|
|
}
|
|
|
|
/// <summary></summary>
|
|
public static string SafeTable(string table)
|
|
{
|
|
const string chars = "0123456789_-ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
|
|
var safety = TextUtility.Restrict(table, chars).Lower();
|
|
var pc = 0;
|
|
for (var i = 0; i < safety.Length; i++)
|
|
{
|
|
if (safety[i] == '-') pc += 1;
|
|
else break;
|
|
}
|
|
if (pc == safety.Length) return "";
|
|
if (pc > 0) safety = safety.Substring(pc);
|
|
return safety;
|
|
}
|
|
|
|
/// <summary></summary>
|
|
public static string SafeColumn(string column) => SafeTable(column);
|
|
|
|
/// <summary></summary>
|
|
/// <exception cref="ArgumentNullException"></exception>
|
|
/// <exception cref="InvalidOperationException"></exception>
|
|
internal static MySqlParameter Parameter(Parameter parameter)
|
|
{
|
|
if (parameter == null) throw new InvalidOperationException("参数无效。");
|
|
return Parameter(parameter.Name, parameter.Type, parameter.Size, parameter.Value);
|
|
}
|
|
|
|
/// <summary></summary>
|
|
internal static MySqlParameter Parameter(string name, ColumnType type, Int32 size, object value)
|
|
{
|
|
if (TextUtility.IsBlank(name)) return null;
|
|
|
|
var dbtype = MySqlDbType.Int64;
|
|
switch (type)
|
|
{
|
|
case ColumnType.Bytes:
|
|
dbtype = MySqlDbType.LongBlob;
|
|
break;
|
|
case ColumnType.Integer:
|
|
dbtype = MySqlDbType.Int64;
|
|
break;
|
|
case ColumnType.Float:
|
|
dbtype = MySqlDbType.Double;
|
|
break;
|
|
case ColumnType.DateTime:
|
|
dbtype = MySqlDbType.DateTime;
|
|
break;
|
|
case ColumnType.VarChar:
|
|
case ColumnType.VarChar191:
|
|
case ColumnType.VarCharMax:
|
|
case ColumnType.NVarChar:
|
|
case ColumnType.NVarChar191:
|
|
case ColumnType.NVarCharMax:
|
|
dbtype = MySqlDbType.VarChar;
|
|
break;
|
|
case ColumnType.Text:
|
|
case ColumnType.NText:
|
|
dbtype = MySqlDbType.LongText;
|
|
break;
|
|
default:
|
|
throw new InvalidOperationException(TextUtility.Merge("类型 ", type.ToString(), " 不受支持。"));
|
|
}
|
|
|
|
switch (type)
|
|
{
|
|
case ColumnType.VarChar:
|
|
case ColumnType.NVarChar:
|
|
size = NumberUtility.Restrict(size, 0, 65535);
|
|
break;
|
|
case ColumnType.VarChar191:
|
|
case ColumnType.NVarChar191:
|
|
size = NumberUtility.Restrict(size, 0, 191);
|
|
break;
|
|
default:
|
|
size = 0;
|
|
break;
|
|
}
|
|
|
|
if (value is string && value != null && size > 0)
|
|
{
|
|
value = TextUtility.Left((string)value, size);
|
|
}
|
|
|
|
var parameter = new MySqlParameter();
|
|
parameter.ParameterName = name;
|
|
parameter.MySqlDbType = dbtype;
|
|
parameter.Value = value;
|
|
if (size > 0) parameter.Size = size;
|
|
return parameter;
|
|
}
|
|
|
|
/// <summary></summary>
|
|
internal static MySqlParameter Parameter(string name, MySqlDbType type, object value, Int32 size = 0)
|
|
{
|
|
var parameter = new MySqlParameter();
|
|
parameter.ParameterName = name;
|
|
parameter.MySqlDbType = type;
|
|
parameter.Value = value;
|
|
if (size > 0) parameter.Size = size;
|
|
return parameter;
|
|
}
|
|
|
|
private static string Declaration(ColumnAttribute column)
|
|
{
|
|
var type = TextUtility.Empty;
|
|
var length = Math.Max(0, (int)column.Length);
|
|
switch (column.Type)
|
|
{
|
|
case ColumnType.Integer:
|
|
type = "bigint";
|
|
break;
|
|
case ColumnType.Float:
|
|
type = "double";
|
|
break;
|
|
case ColumnType.Bytes:
|
|
type = "longblob";
|
|
break;
|
|
case ColumnType.DateTime:
|
|
type = "datetime";
|
|
break;
|
|
case ColumnType.VarChar:
|
|
type = TextUtility.Merge("varchar(", Math.Max(65535, length).ToString(), ")");
|
|
break;
|
|
case ColumnType.VarChar191:
|
|
type = TextUtility.Merge("varchar(191)");
|
|
break;
|
|
case ColumnType.VarCharMax:
|
|
type = TextUtility.Merge("varchar(max)");
|
|
break;
|
|
case ColumnType.Text:
|
|
type = TextUtility.Merge("longtext");
|
|
break;
|
|
case ColumnType.NVarChar:
|
|
type = TextUtility.Merge("varchar(", Math.Min(65535, length).ToString(), ")");
|
|
break;
|
|
case ColumnType.NVarChar191:
|
|
type = TextUtility.Merge("varchar(191)");
|
|
break;
|
|
case ColumnType.NVarCharMax:
|
|
type = TextUtility.Merge("varchar(65535)");
|
|
break;
|
|
case ColumnType.NText:
|
|
type = TextUtility.Merge("longtext");
|
|
break;
|
|
default:
|
|
return TextUtility.Empty;
|
|
}
|
|
return TextUtility.Merge("`", (string)column.Field, "` ", type);
|
|
}
|
|
|
|
/// <summary>获取每个数据库中,每个表的容量,单位为字节。</summary>
|
|
public static Dictionary<string, Dictionary<string, long>> GetTablesCapacity(MySql source)
|
|
{
|
|
var result = new Dictionary<string, Dictionary<string, long>>();
|
|
if (source != null && source.Connect().IsEmpty())
|
|
{
|
|
var sql = "select `table_schema`, `table_name`, `engine`, `data_length`, `index_length` from `information_schema`.tables order by `table_schema`, `table_name`";
|
|
using (var query = (Query)source.Query(sql))
|
|
{
|
|
for (var r = 0; r < query.Rows; r++)
|
|
{
|
|
var store = query.Text(r, "table_schema");
|
|
var table = query.Text(r, "table_name");
|
|
var engine = query.Text(r, "engine");
|
|
var capacity = NumberUtility.Int64(query.Text(r, "data_length")) + NumberUtility.Int64(query.Text(r, "index_length"));
|
|
|
|
if (store == "mysql") continue;
|
|
if (store == "information_schema") continue;
|
|
if (store == "performance_schema") continue;
|
|
|
|
if (engine != "MyISAM" && engine != "InnoDB") continue;
|
|
|
|
if (!result.ContainsKey(store)) result.Add(store, new Dictionary<string, long>());
|
|
if (!result[store].ContainsKey(table)) result[store].Add(table, 0L);
|
|
result[store][table] = capacity;
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
#endregion
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|