//
// System.Data.Common.DbDataPermission.cs
//
// Author:
//   Rodrigo Moya (rodrigo@ximian.com)
//   Tim Coleman (tim@timcoleman.com)
//
// (C) Ximian, Inc
// Copyright (C) Tim Coleman, 2002
//

using System.Security;
using System.Security.Permissions;

namespace System.Data.Common {
	/// <summary>
	/// Provides the capability for a .NET data provider to ensure that a user has a security level adequate for accessing data.
	/// </summary>
	public abstract class DBDataPermission : CodeAccessPermission, IUnrestrictedPermission
	{
		private bool allowBlankPassword;
		private PermissionState permissionState;

		protected DBDataPermission () 
		{
			allowBlankPassword = false;
			permissionState = PermissionState.None;
		}

		protected DBDataPermission (PermissionState state) 
		{
			allowBlankPassword = false;
			permissionState = state;
		}

		public DBDataPermission (PermissionState state, bool abp) 
		{
			allowBlankPassword = abp;
			permissionState = state;
		}

		public bool AllowBlankPassword {
			get { return allowBlankPassword; }
			set { allowBlankPassword = value; }
		}

		public override IPermission Copy () 
		{
			throw new NotImplementedException ();
		}

		[MonoTODO]
		protected virtual DBDataPermission CreateInstance ()
		{
			throw new NotImplementedException ();
		}

		[MonoTODO]
		public override void FromXml (SecurityElement securityElement) 
		{
			throw new NotImplementedException ();
		}

		[MonoTODO]
		public override IPermission Intersect (IPermission target) 
		{
			throw new NotImplementedException ();
		}

		[MonoTODO]
		public override bool IsSubsetOf (IPermission target) 
		{
			throw new NotImplementedException ();
		}

		public bool IsUnrestricted () 
		{
			if (permissionState == PermissionState.Unrestricted)
				return true;
			return false;
		}

		[MonoTODO]
		public override SecurityElement ToXml () 
		{
			throw new NotImplementedException ();
		}

		[MonoTODO]
		public override IPermission Union (IPermission target) 
		{
			throw new NotImplementedException ();
		}
	}
}