static ExplicitArguments CreateActivatorArguments(QueryMiddleware <TArgs, TResult> next, object[] args)
{
var expArgs = new ExplicitArguments();
expArgs.Set(next);
foreach (var arg in args)
{
expArgs.Set(arg.GetType(), arg);
}
return(expArgs);
}
/// <summary>
/// 创建查询链
/// </summary>
public void BuildChain()
{
headMiddleware = null;
var reversedParams = Enumerable.Reverse(middlewareParams);
QueryMiddleware <TArgs, TResult> lastMiddleware = null;
foreach (var param in reversedParams)
{
var expArgs = CreateActivatorArguments(lastMiddleware, param.Item2);
var middleware = (QueryMiddleware <TArgs, TResult>)ServiceLocator.Default.IoC.GetInstance(param.Item1, expArgs);
lastMiddleware = middleware;
}
headMiddleware = lastMiddleware;
chainUpdated = true;
}
public QueryMiddleware(QueryMiddleware <TArgs, TResult> next)
{
Next = next;
}