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// Copyright © 2009, 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
using System;
using System.Configuration;
using System.Web.Configuration;
using System.Collections;
using System.Xml;
namespace MySql.Data.VisualStudio.WebConfig
{
internal struct Options
{
public string ProviderName;
public string AppName;
public string AppDescription;
public bool WriteExceptionToLog;
public bool AutoGenSchema;
public string ConnectionStringName;
public string ConnectionString;
}
internal abstract class GenericConfig
{
protected bool OriginallyEnabled;
protected string sectionName;
protected string typeName;
protected abstract ProviderSettings GetMachineSettings();
public bool Enabled;
public string DefaultProvider;
public string ProviderType;
protected Options defaults = new Options();
protected Options values;
public Options GenericOptions
{
get { return values; }
set { values = value; }
}
public virtual void GetDefaults()
{
ProviderSettings p = GetMachineSettings();
ProviderType = p.Type;
defaults.ProviderName = p.Name;
defaults.ConnectionStringName = GetStringValue(p.Parameters["connectionStringName"]);
defaults.AppName = GetStringValue(p.Parameters["applicationName"]);
defaults.AppDescription = GetStringValue(p.Parameters["description"]);
defaults.AutoGenSchema = GetBoolValue(p.Parameters["autogenerateschema"], false);
defaults.WriteExceptionToLog = GetBoolValue(p.Parameters["writeExceptionsToEventLog"], false);
}
protected string GetStringValue(string s)
{
if (String.IsNullOrEmpty(s)) return "";
return s;
}
protected bool GetBoolValue(string s, bool defaultValue)
{
if (!String.IsNullOrEmpty(s))
{
string lower = s.ToLowerInvariant();
if (lower == "true" || lower == "false")
return Convert.ToBoolean(lower);
}
return defaultValue;
}
public virtual void Initialize(WebConfig wc)
{
// first load up the defaults
GetDefaults();
values = defaults;
// get the default provider
XmlElement e = wc.GetProviderSection(sectionName);
if (e != null)
DefaultProvider = e.GetAttribute("defaultProvider");
e = wc.GetProviderElement(sectionName);
if (e != null)
{
values.ProviderName = e.GetAttribute("name");
if (e.HasAttribute("connectionStringName"))
values.ConnectionStringName = e.GetAttribute("connectionStringName");
if (e.HasAttribute("description"))
values.AppDescription = e.GetAttribute("description");
if (e.HasAttribute("applicationName"))
values.AppName = e.GetAttribute("applicationName");
if (e.HasAttribute("writeExceptionsToEventLog"))
values.WriteExceptionToLog = GetBoolValue(e.GetAttribute("writeExceptionsToEventLog"), false);
if (e.HasAttribute("autogenerateschema"))
values.AutoGenSchema = GetBoolValue(e.GetAttribute("autogenerateschema"), false);
}
values.ConnectionString = wc.GetConnectionString(values.ConnectionStringName);
Enabled = OriginallyEnabled = DefaultProvider != null &&
(DefaultProvider == values.ProviderName ||
DefaultProvider == defaults.ProviderName);
}
protected virtual void SaveProvider(XmlElement provider)
{
provider.SetAttribute("type", ProviderType);
provider.SetAttribute("applicationName", values.AppName);
provider.SetAttribute("description", values.AppDescription);
provider.SetAttribute("connectionStringName", values.ConnectionStringName);
provider.SetAttribute("writeExceptionsToEventLog", values.WriteExceptionToLog.ToString());
provider.SetAttribute("autogenerateschema", values.AutoGenSchema.ToString());
}
public virtual void Save(WebConfig wc)
{
if (OriginallyEnabled)
wc.RemoveProvider(sectionName, defaults.ProviderName, values.ProviderName);
if (!Enabled) return;
// we need to save our connection strings even if we are using the default
// provider definition
wc.SaveConnectionString(defaults.ConnectionStringName, values.ConnectionStringName,
values.ConnectionString);
// we do this so our equality comparison that follows can work
defaults.ConnectionString = values.ConnectionString;
// we are enabled so we want to set our defaultProvider attribute
wc.SetDefaultProvider(sectionName, values.ProviderName);
if (defaults.Equals(values)) return;
// our defaults do not equal our new values so we need to redefine our provider
XmlElement provider = wc.AddProvider(sectionName, defaults.ProviderName, values.ProviderName);
SaveProvider(provider);
}
}
}
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