/// <summary>
/// Retrieves the object by the specified key from the cache. If the object does not exist in the cache, it will be added.
/// </summary>
/// <typeparam name="T">Type of object to return</typeparam>
/// <param name="cache">Cache to work with</param>
/// <param name="key">Cache key for the object</param>
/// <param name="cacheAction">Action to perform if the object does not exist in the cache.</param>
/// <returns></returns>
public static T GetOrCache <T>(this ICacheClient cache, string key, Func <ICacheContext, T> cacheAction) where T : class
{
var item = cache.Get <T>(key);
var eventArgs = new CacheHitEventArgs
{
CacheKey = key,
Type = typeof(T)
};
if (item == null)
{
CacheStackSettings.OnCacheMiss(cache, eventArgs);
var context = new CacheContext(cache);
item = cacheAction(context);
// No need to cache null values
if (item != null)
{
cache.CacheAndSetTriggers(context, key, item);
}
}
else
{
CacheStackSettings.OnCacheHit(cache, eventArgs);
}
return(item);
}
/// <summary>
/// Retrieves the object by the specified key from the cache. If the object does not exist in the cache, it will be added.
/// </summary>
/// <typeparam name="T">Type of object to return</typeparam>
/// <param name="cache">Cache to work with</param>
/// <param name="key">Cache key for the object</param>
/// <param name="cacheAction">Action to perform if the object does not exist in the cache.</param>
/// <returns></returns>
public static T GetOrCacheStruct <T>(this ICacheClient cache, string key, Func <ICacheContext, T> cacheAction) where T : struct
{
// Wrap the value type as nullable and check the cache
var item = cache.Get <T?>(key);
if (item == null)
{
var context = new CacheContext(cache);
item = cacheAction(context);
cache.CacheAndSetTriggers(context, key, item);
}
return(item.Value);
}