Query/Query.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.Text;
using System.Linq.Expressions;


namespace ComLib.Data
{

    /// <summary>
    /// This class implements a method to create queries.
    /// </summary>
    /// <typeparam name="T"></typeparam>
    public class Query<T> : Query, IQuery<T>
    {
        /// <summary>
        /// Creates a new instance.
        /// </summary>
        /// <returns>An empty string.</returns>
        public static new IQuery<T> New()
        {
            return New(string.Empty);
        }


        // Static factory
        /// <summary>
        /// Creates new Query object for the specified db provider name.
        /// </summary>
        /// <param name="dbProviderName">Name of the db provider.</param>
        /// <returns>A new instance of Query.</returns>
        public static IQuery<T> New(string dbProviderName)
        {
            if (string.IsNullOrEmpty(dbProviderName)) return new Query<T>();
            
            // No support for other databases yet.
            // Not sure it's necessay but just in case.
            return new Query<T>();
        }


        /// <summary>
        /// Initializes a new instance of the <see cref="Query&lt;T&gt;"/> class.
        /// </summary>
        public Query()