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// Copyright © 2008, 2010, 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
/*
* This file contains class with data source specific information.
*/
using System;
using Microsoft.VisualStudio.Data;
using Microsoft.VisualStudio.Data.AdoDotNet;
using System.Data;
using System.Data.Common;
namespace MySql.Data.VisualStudio
{
/// <summary>
/// Represents a custom data source information class for MySQL
/// </summary>
public class MySqlDataSourceInformation : AdoDotNetDataSourceInformation
{
public const string DataSource = "DataSource";
private DataTable values;
/// <summary>
/// Constructors fills available properties information
/// </summary>
/// <param name="connection">Reference to database connection object</param>
public MySqlDataSourceInformation(DataConnection connection)
: base(connection)
{
AddProperty(DataSource);
AddProperty(DataSourceVersion);
AddProperty(DefaultSchema);
AddProperty(SupportsAnsi92Sql, true);
AddProperty(SupportsQuotedIdentifierParts, true);
AddProperty(IdentifierOpenQuote, "`");
AddProperty(IdentifierCloseQuote, "`");
AddProperty(ServerSeparator, ".");
AddProperty(CatalogSupported, false);
AddProperty(CatalogSupportedInDml, false);
AddProperty(SchemaSupported, true);
AddProperty(SchemaSupportedInDml, true);
AddProperty(SchemaSeparator, ".");
AddProperty(ParameterPrefix, "@");
AddProperty(ParameterPrefixInName, true);
AddProperty(DefaultCatalog, null);
}
internal void Refresh()
{
EnsureConnected();
DbConnection c = (DbConnection)Connection.GetLockedProviderObject();
values = c.GetSchema("DataSourceInformation");
Connection.UnlockProviderObject();
}
#region Value retrieving
public override object this[string propertyName]
{
get
{
// data source version can change so we need to
// refresh it here
if (propertyName == "DataSourceVersion")
{
if (values == null)
Refresh();
return values.Rows[0]["DataSourceProductVersion"];
}
else
return base[propertyName];
}
}
/// <summary>
/// Called to retrieve property value. Supports following custom properties:
/// DataSource � MySQL server name.
/// Database � default schema name.
/// </summary>
/// <param name="propertyName">Name of property to retrieve.</param>
/// <returns>Property value</returns>
protected override object RetrieveValue(string propertyName)
{
EnsureConnected();
if (propertyName.Equals(DataSource, StringComparison.InvariantCultureIgnoreCase))
{
return (ProviderObject as DbConnection).DataSource;
}
else if (propertyName.Equals(DefaultSchema, StringComparison.InvariantCultureIgnoreCase))
{
return (ProviderObject as DbConnection).Database;
}
object value = base.RetrieveValue(propertyName);
return value;
}
#endregion
private void EnsureConnected()
{
if (Connection.State != DataConnectionState.Open)
Connection.Open();
}
}
}
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