public T Resolve <T>()
{
RegisterInfo info = ElevenContainerDictionary[typeof(T).FullName];
Type type = ElevenContainerDictionary[typeof(T).FullName].TargetType;
T result = default(T);
switch (info.LifeTime)
{
case LifeTimeType.Transient:
result = (T)this.CreateObject(type);
break;
case LifeTimeType.Singleton:
if (this.TypeObjectDictionary.ContainsKey(type))
{
result = (T)this.TypeObjectDictionary[type];
}
else
{
result = (T)this.CreateObject(type);
this.TypeObjectDictionary[type] = result;
}
break;
case LifeTimeType.PerThread:
//怎么保证用线程校验呢？ 线程槽，把数据存在这里
{
string key = type.FullName;
object oValue = CallContext.GetData(key);
if (oValue == null)
{
result = (T)this.CreateObject(type);
CallContext.SetData(key, result);
}
else
{
result = (T)oValue;
}
}
break;
default:
throw new Exception("wrong LifeTime");
}
return(result);
}
private object CreateObject(Type type)
{
ConstructorInfo[] ctorArray = type.GetConstructors();
ConstructorInfo ctor = null;
if (ctorArray.Count(c => c.IsDefined(typeof(ElevenInjectionConstructorAttribute), true)) > 0)
{
ctor = ctorArray.FirstOrDefault(c => c.IsDefined(typeof(ElevenInjectionConstructorAttribute), true));
}
else
{
ctor = ctorArray.OrderByDescending(c => c.GetParameters().Length).FirstOrDefault();
}
List <object> paraList = new List <object>();
foreach (var parameter in ctor.GetParameters())
{
Type paraType = parameter.ParameterType;
RegisterInfo info = ElevenContainerDictionary[paraType.FullName];
Type targetType = info.TargetType;
//object para = this.CreateObject(targetType);
object para = null;
#region
{
switch (info.LifeTime)
{
case LifeTimeType.Transient:
para = this.CreateObject(targetType);
break;
case LifeTimeType.Singleton:
//需要线程安全 双if+lock
{
if (this.TypeObjectDictionary.ContainsKey(targetType))
{
para = this.TypeObjectDictionary[targetType];
}
else
{
para = this.CreateObject(targetType);
this.TypeObjectDictionary[targetType] = para;
}
}
break;
case LifeTimeType.PerThread:
//怎么保证用线程校验呢？ 线程槽，把数据存在这里
{
string key = targetType.FullName;
object oValue = CallContext.GetData(key);
if (oValue == null)
{
para = this.CreateObject(targetType);
CallContext.SetData(key, para);
}
else
{
para = oValue;
}
}
break;
default:
throw new Exception("wrong LifeTime");
}
}
#endregion
//递归：隐形的跳出条件，就是GetParameters结果为空，targetType拥有无参数构造函数
paraList.Add(para);
}
return(Activator.CreateInstance(type, paraList.ToArray()));
}