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#if MYSQL_6_10
// Copyright © 2004, 2018, Oracle and/or its affiliates. All rights reserved.
//
// MySQL Connector/NET is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, 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
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// 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.ComponentModel;
using System.Data;
using System.Data.Common;
using System.Security;
using System.Drawing;
using System.Security.Permissions;
using System.Transactions;
namespace Externals.MySql.Data.MySqlClient
{
[DesignerCategory("Code")]
[ToolboxItem(true)]
internal sealed partial class MySqlConnection : DbConnection, ICloneable
{
/// <summary>
/// Returns schema information for the data source of this <see cref="DbConnection"/>.
/// </summary>
/// <returns>A <see cref="DataTable"/> that contains schema information. </returns>
public override DataTable GetSchema()
{
return GetSchema(null);
}
/// <summary>
/// Returns schema information for the data source of this
/// <see cref="DbConnection"/> using the specified string for the schema name.
/// </summary>
/// <param name="collectionName">Specifies the name of the schema to return. </param>
/// <returns>A <see cref="DataTable"/> that contains schema information. </returns>
public override DataTable GetSchema(string collectionName)
{
if (collectionName == null)
collectionName = SchemaProvider.MetaCollection;
return GetSchema(collectionName, null);
}
/// <summary>
/// Returns schema information for the data source of this <see cref="DbConnection"/>
/// using the specified string for the schema name and the specified string array
/// for the restriction values.
/// </summary>
/// <param name="collectionName">Specifies the name of the schema to return.</param>
/// <param name="restrictionValues">Specifies a set of restriction values for the requested schema.</param>
/// <returns>A <see cref="DataTable"/> that contains schema information.</returns>
public override DataTable GetSchema(string collectionName, string[] restrictionValues)
{
if (collectionName == null)
collectionName = SchemaProvider.MetaCollection;
string[] restrictions = _schemaProvider.CleanRestrictions(restrictionValues);
MySqlSchemaCollection c = _schemaProvider.GetSchema(collectionName, restrictions);
return c.AsDataTable();
}
/// <summary>
/// Enlists in the specified transaction.
/// </summary>
/// <param name="transaction">
/// A reference to an existing <see cref="System.Transactions.Transaction"/> in which to enlist.
/// </param>
public override void EnlistTransaction(Transaction transaction)
{
// enlisting in the null transaction is a noop
if (transaction == null)
return;
// guard against trying to enlist in more than one transaction
if (driver.currentTransaction != null)
{
if (driver.currentTransaction.BaseTransaction == transaction)
return;
Throw(new MySqlException("Already enlisted"));
}
// now see if we need to swap out drivers. We would need to do this since
// we have to make sure all ops for a given transaction are done on the
// same physical connection.
Driver existingDriver = DriverTransactionManager.GetDriverInTransaction(transaction);
if (existingDriver != null)
{
// we can't allow more than one driver to contribute to the same connection
if (existingDriver.IsInActiveUse)
Throw(new NotSupportedException(Resources.MultipleConnectionsInTransactionNotSupported));
// there is an existing driver and it's not being currently used.
// now we need to see if it is using the same connection string
string text1 = existingDriver.Settings.ConnectionString;
string text2 = Settings.ConnectionString;
if (String.Compare(text1, text2, true) != 0)
Throw(new NotSupportedException(Resources.MultipleConnectionsInTransactionNotSupported));
// close existing driver
// set this new driver as our existing driver
CloseFully();
driver = existingDriver;
}
if (driver.currentTransaction == null)
{
MySqlPromotableTransaction t = new MySqlPromotableTransaction(this, transaction);
if (!transaction.EnlistPromotableSinglePhase(t))
Throw(new NotSupportedException(Resources.DistributedTxnNotSupported));
driver.currentTransaction = t;
DriverTransactionManager.SetDriverInTransaction(driver);
driver.IsInActiveUse = true;
}
}
void AssertPermissions()
{
// Security Asserts can only be done when the assemblies
// are put in the GAC as documented in
// http://msdn.microsoft.com/en-us/library/ff648665.aspx
if (this.Settings.IncludeSecurityAsserts)
{
PermissionSet set = new PermissionSet(PermissionState.None);
set.AddPermission(new MySqlClientPermission(ConnectionString));
set.Demand();
MySqlSecurityPermission.CreatePermissionSet(true).Assert();
}
}
/// <summary>
/// Creates a new MySqlConnection object with the exact same ConnectionString value
/// </summary>
/// <returns>A cloned MySqlConnection object</returns>
public object Clone()
{
MySqlConnection clone = new MySqlConnection();
string connectionString = Settings.ConnectionString;
if (connectionString != null)
clone.ConnectionString = connectionString;
return clone;
}
}
}
#endif