///////////////////////////////////////////////////////////
//  Bool.cs
//  Implementation of Class ReportExistanceChecker
//  CSLA type: Read-only object
//  Created on: 29-Nov-2005
//  Object design: John 
//	Coded: John 29-Nov-2005
///////////////////////////////////////////////////////////

using System;
using System.Data;
using CSLA.Data;
using GZTW.Data;
using CSLA;
using System.Threading;
using CSLA.Security;
using System.ComponentModel;



namespace GZTW.AyaNova.BLL 
{
	/// <summary>
	/// Used internally to confirm the existance of a
	/// Report before importation
	/// </summary>
	[Serializable,EditorBrowsable(EditorBrowsableState.Never)]
	public class ReportExistanceChecker : ReadOnlyBase 
	{

		#region Attributes 		
		private bool mExists;
		#endregion

		#region Constructor	

		/// <summary>
		/// Private constructor to prevent direct instantiation
		/// </summary>
		private ReportExistanceChecker()
		{			
		
		}
		#endregion
		

		#region Static methods
		

		

		internal static bool ReportExists(Guid ReportID)
		{
					
			return ((ReportExistanceChecker)DataPortal.Fetch(new Criteria(ReportID ))).mExists;
			
		}

		
		#endregion

		#region DAL DATA ACCESS
		/// 
		/// <param Bool="Criteria"></param>
		protected override void DataPortal_Fetch(object Criteria)
		{		
			Criteria crit = (Criteria)Criteria;
			if(DBUtil.ToGuid(DBUtil.GetScalarFromSQLString(
				"SELECT aID FROM aReport WHERE " +
				"(aID = @ID)",crit.ReportID
				))==Guid.Empty)			
				this.mExists=false;
			else
				this.mExists=true;
			
		}

		
		
		#endregion			

		#region criteria
		/// <summary>
		/// Criteria for identifying existing object
		/// </summary>
		[Serializable]
			private class Criteria
		{
			 
			public Guid ReportID;

			public Criteria( Guid _ReportID)
			{
				ReportID=_ReportID;

				
			}
			
		}
		#endregion
		
	}//end class

}//end namespace GZTW.AyaNova.BLL