public CacheResultInfo(CacheResultAttribute resultInfo, CacheResultItemsAttribute[] itemInfoArray)
 {
     ResultInfo = resultInfo;
     ItemInfoArray = itemInfoArray;
 }
        /// <summary>
        /// Caches each item from the collection returned by target method.
        /// </summary>
        /// <param name="items">
        /// A collection of items to cache.
        /// </param>
        /// <param name="itemInfoArray">
        /// Attributes specifying where and how to cache each item from the collection.
        /// </param>
        /// <param name="vars">
        /// Variables for expression evaluation.
        /// </param>
        private void CacheResultItems(IEnumerable items, CacheResultItemsAttribute[] itemInfoArray, IDictionary vars)
        {
            foreach (CacheResultItemsAttribute itemInfo in itemInfoArray)
            {
                AssertUtils.ArgumentNotNull(itemInfo.KeyExpression, "Key", 
                    "The cache attribute is missing the key definition.");

                ICache cache = GetCache(itemInfo.CacheName);

                #region Instrumentation
                bool isDebugEnabled = logger.IsDebugEnabled;
                #endregion
                foreach (object item in items)
                {
                    if (EvalCondition(itemInfo.Condition, itemInfo.ConditionExpression, item, vars))
                    {
                        object itemKey = itemInfo.KeyExpression.GetValue(item, vars);
                        #region Instrumentation
                        if (isDebugEnabled)
                        {
                            logger.Debug("Caching collection item for key [" + itemKey + "].");
                        }
                        #endregion
                        cache.Insert(itemKey, (item == null ? NullValue : item), itemInfo.TimeToLiveTimeSpan);
                    }
                }
            }
        }