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public interface ICachedObject<TCachedValue>
{
TCachedValue Value { get; set; }
}
public interface ICacheProvider<TCachedObject, TCachedValue>
where TCachedObject : ICachedObject<TCachedValue>
{
TCachedObject Get(string key);
void Set(string key, TCachedObject value);
void Remove(string key);
IEnumerable<TCachedObject> GetAll();
}
public class CachedEntityObject : ICachedObject<IEntity>
{
public EntityState State { get; set; }
public IEntity Value { get; set; }
}
public abstract class CacheProvider<TCache, TCachedObject, TCachedValue> :
ICacheProvider<TCachedObject, TCachedValue>
where TCache : IDictionary<string, TCachedObject>
where TCachedObject : ICachedObject<TCachedValue>
{
protected TCache Cache;
protected abstract void InitializationCache();
public abstract TCachedObject Get(string key);
public abstract void Set(string key, TCachedObject value);
public abstract void Remove(string key);
public abstract IEnumerable<TCachedObject> GetAll();
}
public class CacheEntity : CacheProvider<Dictionary<string, CachedEntityObject>, CachedEntityObject, IEntity>
{
public CacheEntity()
{
InitCache();
}
protected sealed override void InitCache()
{
Cache = new Dictionary<string, CachedEntityObject>();
}
public override CachedEntityObject Get(string key)
{
if (Cache[key] == null)
throw new NullReferenceException($"{nameof(key)} not found from cache list");
return Cache[key];
}
public override void Set(string key, CachedEntityObject value)
{
Remove(key);
Cache[key] = value;
}
public override void Remove(string key)
{
if (Cache.ContainsKey(key))
Cache.Remove(key);
}
public override IEnumerable<CachedEntityObject> GetAll()
{
return Cache.Values;
}
}
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