I have custom SqlClientDriver that create wrapper for command
public class CustomSqlDriver : SqlClientDriver
{
public override IDbCommand CreateCommand()
{
return new CommandWrapper( base.CreateCommand() );
}
}
CommandWrapper implements IDbCommand and have explicit operator to
SqlCommand
public class CommandWrapper: IDbCommand
{
private readonly IDbCommand _impl;
public static explicit operator SqlCommand(
sql_command_wrapper_with_timeout me ){
return (SqlCommand)me._impl;
}
protected command_wrapper_impl( IDbCommand impl )
{
_impl = impl;
}
}
nHibernate fails in SqlClientBatchingBatcher.cs when try to cast my
command to SqlCommand
line 65: _currentBatch.Append((System.Data.SqlClient.SqlCommand)
batchUpdate);
System.InvalidCastException: Unable to cast object of type 'CommandWrapper'
to type 'System.Data.SqlClient.SqlCommand'.
when i write same code in test it works fine:
var testCommand = new CommandWrapper( new SqlCommand );
var sqlCommand = (SqlCommand)testCommand;
whats wrong? in nH 3.1.0 all works fine. broken when try to migrate my
code.
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