#if MYSQL_6_9 // Copyright © 2004, 2011, Oracle and/or its affiliates. All rights reserved. // // MySQL Connector/NET is licensed under the terms of the GPLv2 // , like most // MySQL Connectors. There are special exceptions to the terms and // conditions of the GPLv2 as it is applied to this software, see the // FLOSS License Exception // . // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published // by the Free Software Foundation; version 2 of the License. // // This program is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with this program; if not, write to the Free Software Foundation, Inc., // 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA using System; using System.Collections.Generic; using System.Text; using System.Reflection; using Externals.MySql.Data.MySqlClient.Properties; using System.Data.Common; using System.Data; namespace Externals.MySql.Data.MySqlClient { /// /// BaseCommandInterceptor is the base class that should be used for all userland /// command interceptors /// internal abstract class BaseCommandInterceptor { protected MySqlConnection ActiveConnection { get; private set; } public virtual bool ExecuteScalar(string sql, ref object returnValue) { return false; } public virtual bool ExecuteNonQuery(string sql, ref int returnValue) { return false; } public virtual bool ExecuteReader(string sql, CommandBehavior behavior, ref MySqlDataReader returnValue) { return false; } public virtual void Init(MySqlConnection connection) { ActiveConnection = connection; } } /// /// CommandInterceptor is the "manager" class that keeps the list of registered interceptors /// for the given connection. /// internal sealed class CommandInterceptor : Interceptor { bool insideInterceptor = false; List interceptors = new List(); public CommandInterceptor(MySqlConnection connection) { this.connection = connection; LoadInterceptors(connection.Settings.CommandInterceptors); } public bool ExecuteScalar(string sql, ref object returnValue) { if (insideInterceptor) return false; insideInterceptor = true; bool handled = false; foreach (BaseCommandInterceptor bci in interceptors) handled |= bci.ExecuteScalar(sql, ref returnValue); insideInterceptor = false; return handled; } public bool ExecuteNonQuery(string sql, ref int returnValue) { if (insideInterceptor) return false; insideInterceptor = true; bool handled = false; foreach (BaseCommandInterceptor bci in interceptors) handled |= bci.ExecuteNonQuery(sql, ref returnValue); insideInterceptor = false; return handled; } public bool ExecuteReader(string sql, CommandBehavior behavior, ref MySqlDataReader returnValue) { if (insideInterceptor) return false; insideInterceptor = true; bool handled = false; foreach (BaseCommandInterceptor bci in interceptors) handled |= bci.ExecuteReader(sql, behavior, ref returnValue); insideInterceptor = false; return handled; } protected override void AddInterceptor(object o) { if (o == null) throw new ArgumentException(String.Format("Unable to instantiate CommandInterceptor")); if (!(o is BaseCommandInterceptor)) throw new InvalidOperationException(String.Format(Resources.TypeIsNotCommandInterceptor, o.GetType())); BaseCommandInterceptor ie = o as BaseCommandInterceptor; ie.Init(connection); interceptors.Insert(0, (BaseCommandInterceptor)o); } protected override string ResolveType(string nameOrType) { if (MySqlConfiguration.Settings != null && MySqlConfiguration.Settings.CommandInterceptors != null) { foreach (InterceptorConfigurationElement e in MySqlConfiguration.Settings.CommandInterceptors) if (String.Compare(e.Name, nameOrType, true) == 0) return e.Type; } return base.ResolveType(nameOrType); } } } #endif