Synnefo » Pithos MS Client

using System;

using System.Collections.Generic;

namespace Hammock.Caching

{

#if !SILVERLIGHT

    [Serializable]

#endif

    public class SimpleCache : ICache

    {

        private const string NotSupportedMessage = "This simple cache does not support expiration.";

        private static readonly IDictionary<string, object> _cache = new Dictionary<string, object>(0);

        public virtual int Count

        {

            get { return _cache.Count; }

        }

        public virtual IEnumerable<string> Keys

        {

            get { return _cache.Keys; }

        }

        #region ICache Members

        public virtual void Insert(string key, object value)

        {

            if (!_cache.ContainsKey(key))

            {

                _cache.Add(key, value);

            }

            else

            {

                _cache[key] = value;

            }

        }

        public virtual void Insert(string key, object value, DateTime absoluteExpiration)

        {

            throw new NotSupportedException(NotSupportedMessage);

        }

        public virtual void Insert(string key, object value, TimeSpan slidingExpiration)

        {

            throw new NotSupportedException(NotSupportedMessage);

        }

        public virtual T Get<T>(string key)

        {

            if (_cache.ContainsKey(key))

            {

                return (T)_cache[key];

            }

            return default(T);

        }

        public virtual void Remove(string key)

        {

            if (_cache.ContainsKey(key))

            {

                _cache.Remove(key);

            }

        }

        #endregion

    }

}