Silverlight Attendance Demo Using Sterling Silverlight Database

using System;

namespace Wintellect.Sterling.Database
{
    /// <summary>
    ///     Extensions for the database
    /// </summary>
    public static class Extensions
    {
        /// <summary>
        ///     Extension to register an index
        /// </summary>
        /// <typeparam name="T">The type of the table</typeparam>
        /// <typeparam name="TIndex">The index</typeparam>
        /// <typeparam name="TKey">The key</typeparam>
        /// <param name="table">The table definition</param>
        /// <param name="name">The name of the index</param>
        /// <param name="indexer">The indexer</param>
        /// <returns>The table</returns>
        public static ITableDefinition WithIndex<T,TIndex,TKey>(this ITableDefinition table, string name, Func<T,TIndex> indexer) where T: class, new()
        {
            ((TableDefinition<T,TKey>)table).RegisterIndex(name, indexer);
            return table;
        }

        /// <summary>
        ///     Extension to register an index
        /// </summary>
        /// <typeparam name="T">The type of the table</typeparam>
        /// <typeparam name="TIndex1">The index</typeparam>
        /// <typeparam name="TIndex2">The second index</typeparam>        
        /// <typeparam name="TKey">The key</typeparam>
        /// <param name="table">The table definition</param>
        /// <param name="name">The name of the index</param>
        /// <param name="indexer">The indexer</param>
        /// <returns>The table</returns>
        public static ITableDefinition WithIndex<T, TIndex1, TIndex2, TKey>(this ITableDefinition table, string name, Func<T, Tuple<TIndex1,TIndex2>> indexer) 
            where T : class, new()
        {
            ((TableDefinition<T, TKey>)table).RegisterIndex(name, indexer);
            return table;
        }
    }
}