83 lines
1.8 KiB
C#
83 lines
1.8 KiB
C#
using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using NzbDrone.Common.EnsureThat;
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namespace NzbDrone.Common.Cache
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{
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public class Cached<T> : ICached<T>
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{
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private readonly ConcurrentDictionary<string, T> _store;
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public Cached()
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{
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_store = new ConcurrentDictionary<string, T>();
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}
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public void Set(string key, T value)
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{
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Ensure.That(() => key).IsNotNullOrWhiteSpace();
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_store[key] = value;
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}
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public T Get(string key)
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{
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return Get(key, () => { throw new KeyNotFoundException(key); });
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}
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public T Find(string key)
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{
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T value;
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_store.TryGetValue(key, out value);
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return value;
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}
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public T Get(string key, Func<T> function)
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{
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Ensure.That(() => key).IsNotNullOrWhiteSpace();
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T value;
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if (!_store.TryGetValue(key, out value))
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{
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value = function();
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Set(key, value);
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}
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return value;
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}
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public bool ContainsKey(string key)
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{
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Ensure.That(() => key).IsNotNullOrWhiteSpace();
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return _store.ContainsKey(key);
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}
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public void Clear()
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{
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_store.Clear();
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}
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public void Remove(string key)
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{
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Ensure.That(() => key).IsNotNullOrWhiteSpace();
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T value;
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_store.TryRemove(key, out value);
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}
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public ICollection<T> Values
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{
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get
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{
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return _store.Values;
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}
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}
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public ICollection<string> Keys
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{
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get
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{
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return _store.Keys;
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}
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}
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}
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} |