/// <summary>
/// Retrieves a value from storage
/// </summary>
/// <typeparam name="T">the type of value</typeparam>
/// <param name="key">the key to retrieve</param>
/// <param name="valueLoader">delegate to populate the value if it does not exist in storage</param>
/// <param name="expires">when this object expires</param>
/// <returns>the value</returns>
public T Retrieve <T>(string key, DateTime?expires, StoredValueLoader valueLoader)
{
object oValue = Cache.Get(CACHE_TYPE, GetCacheKey(key));
if (oValue == null && valueLoader != null)
{
oValue = valueLoader();
if (oValue != null)
{
Save(key, oValue, expires);
}
}
return(oValue == null ? default(T) : (T)oValue);
}
/// <summary>
/// Retrieves a value from storage
/// </summary>
/// <typeparam name="T">the type of value</typeparam>
/// <param name="key">the key to retrieve</param>
/// <param name="valueLoader">delegate to populate the value if it does not exist in storage</param>
/// <param name="expires">the sliding expiration for this object in seconds</param>
/// <returns>the value</returns>
internal T Retrieve <T>(string key, int expires, StoredValueLoader valueLoader)
{
object oValue = Cache.Get(CACHE_TYPE, GetCacheKey(key));
if (oValue == null && valueLoader != null)
{
oValue = valueLoader();
if (oValue != null)
{
Save(key, oValue, DateTime.Now.AddSeconds(expires));
}
}
return(oValue == null ? default(T) : (T)oValue);
}
/// <summary>
/// Retrieves a value from storage
/// </summary>
/// <typeparam name="T">the type of value</typeparam>
/// <param name="key">the key to retrieve</param>
/// <param name="valueLoader">delegate to populate the value if it does not exist in storage</param>
/// <returns>the value</returns>
public T Retrieve <T>(string key, StoredValueLoader valueLoader)
{
return(Retrieve <T>(key, null, valueLoader));
}
