/// <summary>
/// 追加或修改缓冲对象
/// </summary>
/// <param name="uniqueKey"></param>
/// <param name="value"></param>
/// <returns>返回执行完修改操作后，缓冲区中对应的数据</returns>
public bool AddOrUpdate(string uniqueKey, BufferEntry value)
{
CacheItemPolicy policy = GetPolicy();
_buffer.Set(uniqueKey, value, policy);
return(true);
}
/// <summary>
/// 从缓存区中创建或者获取数据
/// </summary>
/// <param name="tip"></param>
/// <param name="getCacheKey"></param>
/// <param name="dataVersion"></param>
/// <param name="load"></param>
/// <returns></returns>
private IAggregateRoot GetOrCreateImpl(string uniqueKey, int dataVersion, Func <IAggregateRoot> load)
{
BufferEntry result = null;
if (_buffer.TryGet(uniqueKey, out result))
{
if (result.DataVersion == dataVersion)
{
return(result.Root);
}
}
//更新缓冲区
var root = load();
result = new BufferEntry(root);
_buffer.AddOrUpdate(uniqueKey, result);
return(result.Root);
}
private void Add(string uniqueKey, IAggregateRoot root)
{
var result = new BufferEntry(root); //主动追加的数据，版本号从1开始
_buffer.AddOrUpdate(uniqueKey, result);
}
/// <summary>
/// 尝试从缓冲区中获取数据
/// </summary>
/// <param name="cacheKey"></param>
/// <param name="value"></param>
/// <returns></returns>
public bool TryGet(string uniqueKey, out BufferEntry value)
{
value = _buffer[uniqueKey] as BufferEntry;
return(value != null);
}