Repository/Interfaces/IRepositoryQueryable.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;
using System.Collections.ObjectModel;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Linq.Expressions;
using System.Data;

using ComLib;
using ComLib.Data;


namespace ComLib.Entities
{    

    /// <summary>
    /// Repository that is Queryable withOUT CRUD/persistance methods.
    /// This allows some basic functionality across any table, regardless
    /// of the entities it stores.
    /// </summary>
    public interface IRepositoryQueryable : IRepositoryConfigurable
    {
        /// <summary>
        /// The name of the table associated w/ this repository.
        /// </summary>
        string TableName { get; set; }


        /// <summary>
        /// Prefix to use for parameterized queries.
        /// e.g. @ for sql server.
        /// </summary>
        string ParamPrefix { get; set; }


        #region Named Filters
        /// <summary>
        /// Dictionary of named filters/criteria.
        /// Useful when doing Count("ActiveUsers");
        /// Or Avg("Rating", "PopularPosts")
        /// </summary>
        IDictionary<string, IQuery> NamedFilters { get; }


        /// <summary>