/// <summary>
/// Loads data from persistence store
/// </summary>
/// <returns>A Hashtable containing the cache items.</returns>
protected override Hashtable LoadDataFromStore()
{
lock (store)
{
Hashtable itemsLoadedFromStore = new Hashtable();
string[] itemNames = store.GetDirectoryNames(GenerateSearchString(storageAreaName));
foreach (string itemLocation in itemNames)
{
string itemName = GenerateItemLocation(itemLocation);
try
{
IsolatedStorageCacheItem loadedItem =
new IsolatedStorageCacheItem(store, itemName, this.encryptionProvider);
CacheItem itemLoadedFromStore = loadedItem.Load();
itemsLoadedFromStore.Add(itemLoadedFromStore.Key, itemLoadedFromStore);
}
catch (IOException)
{
//do nothing
}
}
return(itemsLoadedFromStore);
}
}
/// <summary>
/// Adds new item to persistence store
/// </summary>
/// <param name="storageKey">Unique key for storage item</param>
/// <param name="newItem">Item to be added to cache. May not be null.</param>
protected override void AddNewItem(int storageKey, CacheItem newItem)
{
lock (store)
{
string storageLocation = GenerateItemLocation(storageKey);
IsolatedStorageCacheItem cacheItem =
new IsolatedStorageCacheItem(store, storageLocation, this.encryptionProvider);
cacheItem.Store(newItem);
}
}
/// <summary>
/// Updates the last accessed time for the specified CacheItem stored in Isolated Storage
/// </summary>
/// <param name="storageKey">Identifer for CacheItem to remove.</param>
/// <param name="timestamp">New timestamp for CacheItem.</param>
protected override void UpdateLastAccessedTime(int storageKey, DateTime timestamp)
{
lock (store)
{
string itemLocation = GenerateItemLocation(storageKey);
IsolatedStorageCacheItem storageItem =
new IsolatedStorageCacheItem(store, itemLocation, this.encryptionProvider);
storageItem.UpdateLastAccessedTime(timestamp);
}
}
/// <summary>
/// Updates the last accessed time for the specified CacheItem stored in Isolated Storage
/// </summary>
/// <param name="storageKey">Identifer for CacheItem to remove.</param>
/// <param name="newTimestamp">New timestamp for CacheItem.</param>
protected override void UpdateLastAccessedTime(int storageKey, DateTime newTimestamp)
{
lock (store)
{
string itemLocation = GenerateItemLocation(storageKey);
IsolatedStorageCacheItem storageItem =
new IsolatedStorageCacheItem(store, itemLocation, this.encryptionProvider);
storageItem.UpdateLastAccessedTime(newTimestamp);
}
}
/// <summary>
/// Loads data from persistence store
/// </summary>
/// <returns>A Hashtable containing the cache items.</returns>
protected override Hashtable LoadDataFromStore()
{
lock (store)
{
Hashtable itemsLoadedFromStore = new Hashtable();
string[] itemNames = store.GetDirectoryNames(GenerateSearchString(storageAreaName));
foreach (string itemLocation in itemNames)
{
string itemName = GenerateItemLocation(itemLocation);
IsolatedStorageCacheItem loadedItem =
new IsolatedStorageCacheItem(store, itemName, this.encryptionProvider);
CacheItem itemLoadedFromStore = loadedItem.Load();
itemsLoadedFromStore.Add(itemLoadedFromStore.Key, itemLoadedFromStore);
}
return itemsLoadedFromStore;
}
}
/// <summary>
/// Adds new item to persistence store
/// </summary>
/// <param name="storageKey">Unique key for storage item</param>
/// <param name="newItem">Item to be added to cache. May not be null.</param>
protected override void AddNewItem(int storageKey, CacheItem newItem)
{
lock (store)
{
string storageLocation = GenerateItemLocation(storageKey);
IsolatedStorageCacheItem cacheItem =
new IsolatedStorageCacheItem(store, storageLocation, this.encryptionProvider);
cacheItem.Store(newItem);
}
}
/// <summary>
/// Updates the last accessed time for the specified CacheItem stored in Isolated Storage
/// </summary>
/// <param name="storageKey">Identifer for CacheItem to remove.</param>
/// <param name="timestamp">New timestamp for CacheItem.</param>
protected override void UpdateLastAccessedTime(int storageKey, DateTime timestamp)
{
lock (store)
{
try
{
string itemLocation = GenerateItemLocation(storageKey);
IsolatedStorageCacheItem storageItem =
new IsolatedStorageCacheItem(store, itemLocation, this.encryptionProvider);
storageItem.UpdateLastAccessedTime(timestamp);
}
catch (IOException)
{
// do nothing
}
}
}
