// Not implementing finalizer here because there are no unmanaged resources
// to release. See http://msdnwiki.microsoft.com/en-us/mtpswiki/12afb1ea-3a17-4a3f-a1f0-fcdb853e2359.aspx
// The bulk of the clean-up code is implemented in Dispose(bool)
protected virtual void Dispose(bool disposing)
{
// Implemented but empty so that derived contexts can implement
// a finalizer that potentially cleans up unmanaged resources.
if(disposing)
{
_services = null;
if(_conManager != null)
{
_conManager.DisposeConnection();
}
_conManager = null;
_typeProvider = null;
_sqlFactory = null;
_translator = null;
_readerCompiler = null;
_log = null;
}
}
internal Visitor(SqlFactory sql)
{
this.sql = sql;
}
private void InitializeProviderMode()
{
if(_typeProvider == null)
{
switch(_mode)
{
case SqlServerProviderMode.Sql2000:
_typeProvider = SqlTypeSystem.Create2000Provider();
break;
case SqlServerProviderMode.Sql2005:
_typeProvider = SqlTypeSystem.Create2005Provider();
break;
case SqlServerProviderMode.Sql2008:
_typeProvider = SqlTypeSystem.Create2008Provider();
break;
case SqlServerProviderMode.SqlCE:
_typeProvider = SqlTypeSystem.CreateCEProvider();
break;
default:
System.Diagnostics.Debug.Assert(false);
break;
}
}
if(_sqlFactory == null)
{
_sqlFactory = new SqlFactory(_typeProvider, _services.Model);
_translator = new Translator(_services, _sqlFactory, _typeProvider);
}
}
internal LongTypeConverter(SqlFactory sql)
{
this.visitor = new Visitor(sql);
}
internal Visitor(SqlFactory sql)
{
this.sql = sql;
}
internal LongTypeConverter(SqlFactory sql)
{
this.visitor = new Visitor(sql);
}
internal Visitor(SqlFactory sql, SqlServerProviderMode providerMode)
{
this.sql = sql;
this.providerMode = providerMode;
this.skipper = new SqlSelectionSkipper(this);
}
internal static SqlNode Convert(SqlNode node, SqlFactory nodeFactory, SqlServerProviderMode providerMode)
{
return new Visitor(nodeFactory, providerMode).Visit(node);
}