public T Get <T>(string key, CacheItemSelector <T> selector,
DateTime expiration, IEnumerable <string> tags)
{
Precondition.Require(key, () => Error.ArgumentNull("key"));
Precondition.Require(selector, () => Error.ArgumentNull("selector"));
object value;
if ((value = Cache.Get(key)) == null)
{
try
{
lock (AcquireLock(key))
{
if ((value = Cache.Get(key)) == null)
{
value = selector();
if (value != null)
{
Cache.Insert(key, value, CreateTagDependency(Cache, tags),
expiration, Cache.NoSlidingExpiration,
CacheItemPriority.Normal, null);
}
}
}
}
finally
{
ReleaseLock(key);
}
}
return(Converter.ChangeType <T>(value));
}
public virtual T Get <T>(string key, CacheItemSelector <T> selector,
DateTime expiration, IEnumerable <string> tags)
{
Precondition.Defined(key, () => Error.ArgumentNull("key"));
Precondition.Require(selector, () => Error.ArgumentNull("selector"));
Precondition.Require(!_disposed, () => Error.ObjectDisposed("entries"));
_entriesLock.EnterUpgradeableReadLock();
try
{
CacheEntry entry;
if (!TryGetEntryAndValidate(key, out entry))
{
_entriesLock.EnterWriteLock();
try
{
if (!TryGetEntryAndValidate(key, out entry))
{
_entries[key] = entry = new CacheEntry(key, selector(),
expiration, CreateEntryTags(tags));
}
}
finally
{
_entriesLock.ExitWriteLock();
}
}
return(Converter.ChangeType <T>(entry.Value));
}
finally
{
_entriesLock.ExitUpgradeableReadLock();
}
}
public T Get <T>(string key, CacheItemSelector <T> selector,
DateTime expiration, IEnumerable <string> tags)
{
if (tags == null)
{
return(_provider.Get <T>(key, selector, expiration));
}
return(TaggedProvider.Get <T>(key, selector, expiration, tags));
}
public T Get <T>(string key, CacheItemSelector <T> selector,
DateTime expiration, IEnumerable <string> tags)
{
Precondition.Require(selector, () => Error.ArgumentNull("selector"));
if (_allowDirtyReads || (tags != null && _invalidations.Overlaps(tags)))
{
T value = selector();
if (!_allowDirtyReads)
{
_deferredActions.Add(a => a.Insert(key, value, expiration, tags));
}
return(value);
}
return(_provider.Get(key, selector, expiration, tags));
}
public T Get <T>(string key, CacheItemSelector <T> selector, DateTime expiration)
{
return(_provider.Get <T>(key, selector, expiration));
}
public T Get <T>(string key, CacheItemSelector <T> selector, DateTime expiration)
{
return(Get(key, selector, expiration, null));
}
public T Get <T>(string key, CacheItemSelector <T> selector,
TimeSpan timeout, IEnumerable <string> tags)
{
return(Get <T>(key, selector, timeout, tags));
}
public T Get <T>(string key, CacheItemSelector <T> selector,
IEnumerable <string> tags)
{
return(Get <T>(key, selector, _defaultTimeout, tags));
}
public T Get <T>(string key, CacheItemSelector <T> selector,
TimeSpan timeout)
{
return(Get <T>(key, selector, timeout));
}
public T Get <T>(string key, CacheItemSelector <T> selector)
{
return(Get <T>(key, selector, _defaultTimeout, null));
}
public T Get <T>(string key, CacheItemSelector <T> selector,
DateTime expiration, IEnumerable <string> tags)
{
return(selector());
}
public T Get <T>(string key, CacheItemSelector <T> selector,
DateTime expiration)
{
return(selector());
}
public static T Get <T>(this ITaggedCacheProvider provider,
string key, CacheItemSelector <T> selector,
DateTime expiration, params string[] tags)
{
return(provider.Get <T>(key, selector, expiration, tags));
}
