Repository/LookupMulti.cs

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/*
 * Author: Kishore Reddy
 * Url: http://commonlibrarynet.codeplex.com/
 * Title: CommonLibrary.NET
 * Copyright: � 2009 Kishore Reddy
 * License: LGPL License
 * LicenseUrl: http://commonlibrarynet.codeplex.com/license
 * Description: A C# based .NET 3.5 Open-Source collection of reusable components.
 * Usage: 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.
 */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Collections;
using System.Text;
using System.Data;
using System.Data.Common;
using System.Linq.Expressions;


using ComLib;
using ComLib.Data;
using ComLib.Entities;


namespace ComLib.Entities
{

    /// <summary>
    /// Interface for looking up data by id or name.
    /// </summary>
    /// <typeparam name="T">Type of items.</typeparam>
    public interface ILookUpMulti<T>
    {
        /// <summary>
        /// Get the item by an index.
        /// </summary>
        /// <param name="id">Index of item.</param>
        /// <returns>Item at supplied index.</returns>
        T this[int id] { get; }


        /// <summary>
        /// Get the item by its name.
        /// </summary>
        /// <param name="name">Name of item.</param>
        /// <returns>Item with supplied name.</returns>
        T this[string name] { get; }
    }


    
    /// <summary>
    /// Used to lookup items by both an int and string.
    /// This is useful when looking up item by Id and Name for example.
    /// This is the case for some entities such as City/Country.