Patterns/Factory.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;

namespace ComLib.Patterns
{
    /// <summary>
    /// This interface can be used by classes
    /// that implement a factory pattern.
    /// </summary>
    /// <typeparam name="TKey">Type of key.</typeparam>
    /// <typeparam name="T">Type of generated classes.</typeparam>
    public class Factory<TKey, T>
    {
        /// <summary>
        /// Dictionary of creators for a specific key.
        /// </summary>
        public static IDictionary<TKey, Func<T>> _creators = new Dictionary<TKey, Func<T>>();


        /// <summary>
        /// Creation function.
        /// </summary>
        public static Func<T> _defaultCreator;


        /// <summary>
        /// Default node.
        /// </summary>
        public static T _default;


        /// <summary>
        /// Register a key to implementation.
        /// </summary>
        /// <param name="key">Key.</param>
        /// <param name="result">Result of key.</param>
        public static void Register(TKey key, T result)
        {
            _creators[key] = new Func<T>(() => result);
        }        


        /// <summary>
        /// Registers the default implementation.