/// <summary>
/// Updates the specified cache index.
/// </summary>
/// <param name="cacheIndex">Index of the cache.</param>
public static void Update(CacheIndex cacheIndex)
{
if (cacheIndex == null)
{
throw new ArgumentNullException("cacheIndex");
}
string key = CacheIndexMap.GetKey(cacheIndex);
// if the key exists in the map then replace it with current parameter..
if (Map.ContainsKey(key))
{
CacheIndexMap.Remove(key);
}
CacheIndexMap.Add(cacheIndex);
}
/// <summary>
/// Gets the specified key.
/// </summary>
/// <param name="key">The key.</param>
/// <returns></returns>
public static CacheIndex Get(string key)
{
if (String.IsNullOrEmpty(key))
{
throw new ArgumentNullException("key", "Requested CacheIndex key is null or empty");
}
CacheIndex cacheIndex;
if (!Map.TryGetValue(key, out cacheIndex))
{
cacheIndex = CacheIndex.Create(key);
CacheIndexMap.Add(cacheIndex);
}
return(cacheIndex);
}
/// <summary>
/// Returns cache index that matches Uri
/// </summary>
/// <param name="uriString">Absolute Uri for resource represented by Uri</param>
/// <returns></returns>
public static CacheIndex GetFromUri(string uriString)
{
if (String.IsNullOrEmpty(uriString))
{
throw new ArgumentNullException("uriString");
}
string key = GetKeyFromUri(uriString);
// To-Do: should this really create a cache index item
CacheIndex cacheIndex;
if (!Map.TryGetValue(key, out cacheIndex))
{
cacheIndex = CacheIndex.Create(key);
CacheIndexMap.Add(cacheIndex);
}
return(cacheIndex);
}
