#region Apache Notice
/*****************************************************************************
 * $Revision$
 * $LastChangedDate$
 * $LastChangedBy$
 * 
 * iBATIS.NET Data Mapper
 * Copyright (C) 2006/2005 - The Apache Software Foundation
 *  
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 ********************************************************************************/
#endregion

#region Using

using System;
using System.Xml.Serialization;

#endregion

namespace IBatisNet.Common
{
	/// <summary>
	/// Information about a data source.
	/// </summary>
	[Serializable]
	[XmlRoot("dataSource", Namespace="http://ibatis.apache.org/dataMapper")]
	public class DataSource : IDataSource
	{

		#region Fields
		[NonSerialized]
		private string _connectionString = string.Empty;
		[NonSerialized]
		private IDbProvider _provider;
		[NonSerialized]
		private string _name = string.Empty;
		#endregion

		#region Properties
		/// <summary>
		/// The connection string.
		/// </summary>
		[XmlAttribute("connectionString")]
		public virtual string ConnectionString
		{
			get { return _connectionString; }
			set
			{
				CheckPropertyString("ConnectionString", value);
				_connectionString = value;
			}
		}

		/// <summary>
		/// DataSource Name
		/// </summary>
		[XmlAttribute("name")]
		public string Name
		{
			get { return _name; }
			set 
			{ 
				CheckPropertyString("Name", value);
				_name = value; 
			}
		}

		/// <summary>
		/// The provider to use for this data source.
		/// </summary>
		[XmlIgnore]
		public virtual IDbProvider DbProvider
		{
			get { return _provider; }
			set { _provider = value; }
		}
		#endregion

		#region Constructor (s) / Destructor
		/// <summary>
		/// Constructor
		/// </summary>
		public DataSource()
		{
		}
		#endregion

		#region Methods

		private void CheckPropertyString(string propertyName, string value)
		{
			if (value == null || value.Trim().Length == 0)
			{
				throw new ArgumentException(
					"The "+propertyName+" property cannot be " +
					"set to a null or empty string value.", propertyName);
			}
		}

		/// <summary>
		/// ToString implementation.
		/// </summary>
		/// <returns>A string that describes the data source</returns>
		public override string ToString()
		{
			return "Source: ConnectionString : "+ConnectionString;
		}
		#endregion

	}
}