/// <summary>
/// 返回某个对象,如果不存在则返回参数value
/// </summary>
/// <param name="pool">对象池</param>
/// <param name="key">键值</param>
/// <param name="value">如果对象池不存在对应键的数据，则返回此值</param>
/// <returns></returns>
public static object GetOrAdd(this IObjectPool pool, object key, object value)
{
if (!pool.Contains(key))
{
return(value);
}
else
{
return(pool.Get(key));
}
}
/// <summary>
/// 返回某个对象,如果不存在则调用函数委托获取值,并将值存入对象池后返回
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="pool">对象池</param>
/// <param name="key">键值</param>
/// <param name="func">如果对象池不存在对应键的数据，则从此函数委托获取新值并存入对象池后返回</param>
/// <returns></returns>
public static T GetOrAdd <T>(this IObjectPool pool, object key, Func <T> func)
{
if (!pool.Contains(key))
{
T value = func.Invoke();
pool.Add(key, value);
return(value);
}
else
{
return((T)pool.Get(key));
}
}
/// <summary>
/// 判断是否存在某个对象
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public bool Contains(object key)
{
IObjectPool pool = this.GetObjectPool();
return(pool == null ? false : pool.Contains(key));
}