/*
 *    The contents of this file are subject to the Initial
 *    Developer's Public License Version 1.0 (the "License");
 *    you may not use this file except in compliance with the
 *    License. You may obtain a copy of the License at
 *    https://github.com/FirebirdSQL/NETProvider/blob/master/license.txt.
 *
 *    Software distributed under the License is distributed on
 *    an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either
 *    express or implied. See the License for the specific
 *    language governing rights and limitations under the License.
 *
 *    All Rights Reserved.
 */

//$Authors = Jiri Cincura (jiri@cincura.net)

using System;
using System.Collections.Generic;
using System.Data.Entity.Core.Metadata.Edm;

namespace EntityFramework.Firebird.SqlGen
{
	internal sealed class JoinSymbol : Symbol
	{
		#region Fields

		private List<Symbol> _columnList;
		private List<Symbol> _extentList;
		private List<Symbol> _flattenedExtentList;
		private Dictionary<string, Symbol> _nameToExtent;
		private bool _isNestedJoin;

		#endregion

		#region Properties

		internal List<Symbol> ColumnList
		{
			get
			{
				if (null == _columnList)
				{
					_columnList = new List<Symbol>();
				}
				return _columnList;
			}
			set { _columnList = value; }
		}

		internal List<Symbol> ExtentList
		{
			get { return _extentList; }
		}

		internal List<Symbol> FlattenedExtentList
		{
			get
			{
				if (null == _flattenedExtentList)
				{
					_flattenedExtentList = new List<Symbol>();
				}
				return _flattenedExtentList;
			}
			set { _flattenedExtentList = value; }
		}

		internal Dictionary<string, Symbol> NameToExtent
		{
			get { return _nameToExtent; }
		}

		internal bool IsNestedJoin
		{
			get { return _isNestedJoin; }
			set { _isNestedJoin = value; }
		}

		#endregion

		#region Constructors

		public JoinSymbol(string name, TypeUsage type, List<Symbol> extents)
			: base(name, type)
		{
			_extentList = new List<Symbol>(extents.Count);
			_nameToExtent = new Dictionary<string, Symbol>(extents.Count, StringComparer.OrdinalIgnoreCase);

			foreach (var symbol in extents)
			{
				_nameToExtent[symbol.Name] = symbol;
				ExtentList.Add(symbol);
			}
		}

		#endregion
	}
}
