Windsor implementation of Common Service Locator

WindsorServiceLocator.cs

    using System;
    using System.Collections.Generic;
    using Castle.Windsor;
    using Microsoft.Practices.ServiceLocation;

    /// <summary>
    /// Adapts the behavior of the Windsor container to the common
    /// IServiceLocator
    /// </summary>
    public class WindsorServiceLocator : ServiceLocatorImplBase
    {
        private readonly IWindsorContainer container;

        /// <summary>
        /// Initializes a new instance of the <see cref="WindsorServiceLocator"/> class.
        /// </summary>
        /// <param name="container">The container.</param>
        public WindsorServiceLocator(IWindsorContainer container)
        {
            this.container = container;
        }

        /// <summary>
        /// When implemented by inheriting classes, this method will do the actual work of resolving
        /// the requested service instance.
        /// </summary>
        /// <param name="serviceType">Type of instance requested.</param>
        /// <param name="key">Name of registered service you want. May be null.</param>
        /// <returns>
        /// The requested service instance.
        /// </returns>
        protected override object DoGetInstance(Type serviceType, string key)
        {
            if (key != null)
                return container.Resolve(key, serviceType);
            return container.Resolve(serviceType);
        }

        /// <summary>
        /// When implemented by inheriting classes, this method will do the actual work of
        /// resolving all the requested service instances.
        /// </summary>
        /// <param name="serviceType">Type of service requested.</param>
        /// <returns>
        /// Sequence of service instance objects.
        /// </returns>
        protected override IEnumerable<object> DoGetAllInstances(Type serviceType)
        {
            return (object[])container.ResolveAll(serviceType);
        }
    }