public TValue this[TKey key]
{
get
{
TValue value;
var cacheKey = new KeyIdentifier <TKey>(key);
if (!_cache.TryGetValue(cacheKey, out value))
{
throw new KeyNotFoundException("Key:" + key + " could not be found in the cache.");
}
return(value);
}
set
{
if (Contains(key))
{
var cacheKey = new KeyIdentifier <TKey>(key);
_cache[cacheKey] = value;
}
TryAdd(key, value);
PerformEviction();
}
}
public bool Contains(TKey key)
{
lock (this)
{
var cacheKey = new KeyIdentifier <TKey>(key);
return(_cache.ContainsKey(cacheKey));
}
}
public bool TryRemove(TKey key, out TValue value)
{
lock (this)
{
var cacheKey = new KeyIdentifier <TKey>(key);
return(_cache.TryRemove(cacheKey, out value));
}
}
public bool TryAdd(TKey key, TValue value)
{
lock (this)
{
var cacheKey = new KeyIdentifier <TKey>(key);
if (!_cache.TryAdd(cacheKey, value))
{
return(false);
}
PerformEviction();
return(true);
}
}
public int CompareTo(object obj)
{
int result = 0;
if (obj is KeyIdentifier <TKey> )
{
KeyIdentifier <TKey> other = (KeyIdentifier <TKey>)obj;
if (other._refCount > _refCount)
{
result = -1;
}
else if (other._refCount < _refCount)
{
result = 1;
}
}
return(result);
}
