/// <summary>
/// 尝试获取到对应资源;
/// </summary>
public bool TryGet <T>(string key, out T value)
where T : class
{
ThrowIfKeyInconformity <T>(key);
using (objectCollectionLock.ReadLock())
{
WeakReferenceObject obj;
if (objectCollection.TryGetValue(key, out obj))
{
WeakReferenceObject <T> weakReferenceObject = obj as WeakReferenceObject <T>;
if (weakReferenceObject != null)
{
return(weakReferenceObject.TryGetTarget(out value));
}
}
value = default(T);
return(false);
}
}
/// <summary>
/// 读取到资源,若已经存在则直接返回;
/// </summary>
public T Load <T>(string key, Func <T> loader)
where T : class
{
ThrowIfKeyInconformity <T>(key);
if (loader == null)
{
throw new ArgumentNullException(nameof(loader));
}
using (objectCollectionLock.UpgradeableReadLock())
{
WeakReferenceObject obj;
if (objectCollection.TryGetValue(key, out obj))
{
WeakReferenceObject <T> weakReferenceObject = obj as WeakReferenceObject <T>;
if (weakReferenceObject == null)
{
throw InvalidType <T>(key);
}
else
{
T asset;
if (weakReferenceObject.TryGetTarget(out asset))
{
return(asset);
}
else
{
return(InternalReplace(key, obj, loader));
}
}
}
else
{
return(InternalAdd(key, loader));
}
}
}
/// <summary>
/// 获取到对应资源,若不存在则返回异常;
/// </summary>
public T Get <T>(string key)
where T : class
{
ThrowIfKeyInconformity <T>(key);
using (objectCollectionLock.ReadLock())
{
WeakReferenceObject obj;
if (objectCollection.TryGetValue(key, out obj))
{
WeakReferenceObject <T> weakReferenceObject = obj as WeakReferenceObject <T>;
if (weakReferenceObject != null)
{
T asset;
if (weakReferenceObject.TryGetTarget(out asset))
{
return(asset);
}
}
}
throw new KeyNotFoundException(key);
}
}