Collections/DictionaryMultiKey.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.Generic;
using System.Text;

namespace CommonLibrary
{
    /// <summary>
    /// Dictionary for bidirectional lookup.
    /// </summary>
    /// <typeparam name="TKey"></typeparam>
    /// <typeparam name="TValue"></typeparam>
    public class DictionaryMultiKey<TKey1, TKey2, TValue> : IDictionary<TKey1, TValue>
    {
        #region Private Data members
        private IDictionary<TKey1, TValue> _key1Map = new Dictionary<TKey1, TValue>();
        private IDictionary<TKey2, TValue> _key2Map = new Dictionary<TKey2, TValue>();
        #endregion


        #region Constructors
        /// <summary>
        /// Create new instance with empty bi-directional lookups.
        /// </summary>
        public DictionaryBidirectional() { }


        /// <summary>
        /// Initialize using existing forward and reverse lookups.
        /// </summary>
        /// <param name="forward"></param>
        /// <param name="reverse"></param>
        public DictionaryBidirectional(IDictionary<TKey, TValue> forward, IDictionary<TValue, TKey> reverse)
        {
            _key1Map = forward;
            _key2Map = reverse;
        }
        #endregion Constructors


        #region IDictionary<TKey,TValue> Members
        /// <summary>
        /// Add to key/value for both forward and reverse lookup.
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>