/// <summary>
/// Returns the value stored in the cache item.
/// </summary>
/// <remarks>
/// This value must be serializable, otherwise <see cref="ArgumentException"/>
/// is thrown when you will try to add or insert the CacheItem.
/// </remarks>
/// <typeparam name="T">Specifies the type of value obtained from the cache item.</typeparam>
/// <returns>Value of the cache item with the type defined.</returns>
/// <example>
/// Example gets value of a cache item
/// <code>
/// CacheItem item = cache.GetCacheItem("Product0");
///
/// Product product = item.GetValue<Product>();
/// </code>
/// </example>
public T GetValue <T>()
{
if (_value is ValueEmissary)
{
if (_currentValue != default(object) && _currentValue is T)
{
return((T)_currentValue);
}
var emissary = _value as ValueEmissary;
if (CacheInstance == default(Cache))
{
return((T)emissary.Data);
}
_currentValue = CacheInstance.SafeDeserialize <T>(emissary.Data, CacheInstance.SerializationContext, FlagMap, UserObjectType.CacheItem);
return((T)_currentValue);
}
return((T)_value);
}
