/// <summary>
/// 从配置文件中读取数据
/// </summary>
/// <param name="doc">配置文件</param>
/// <returns>配置数据</returns>
private static InjectionModel GetDataFromXml(XmlDocument doc)
{
var model = new InjectionModel();
foreach (XmlNode node in doc.DocumentElement.SelectSingleNode("modules").ChildNodes)
{
if (!(node is XmlComment))
{
var module = new InjectionModuleModel
{
Name = node.Attributes["name"]?.Value,
Assembly = node.Attributes["assembly"]?.Value,
Class = node.Attributes["class"]?.Value
};
if (string.IsNullOrWhiteSpace(module.Name))
{
//如果名称为空, 随便起一个名
module.Name = Guid.NewGuid().ToString();
}
foreach (XmlNode p_node in node.ChildNodes)
{
if (!(p_node is XmlComment))
{
var parameter = new InjectionParameterModel
{
Name = p_node.Attributes["name"]?.Value,
Ref = p_node.Attributes["ref"]?.Value,
Value = p_node.Attributes["value"]?.Value,
};
switch (p_node.Name)
{
case "constructor":
//构造参数
module.ConstructorList.Add(parameter);
break;
case "property":
//待注入属性
module.PropertyList.Add(parameter);
break;
default: break;
}
}
}
model.Modules.Add(module);
}
}
return(model);
}
/// <summary>
/// 实例化模块集合
/// </summary>
/// <param name="model">模块集合信息</param>
/// <returns>实例化模块对象集合</returns>
private static InjectionModel InstantiationModules(InjectionModel model)
{
//加载待注入模块
var pendinglist = model.Modules.Select(module => module).ToList();
//加载需要注入模块
var is_load = false;
while (pendinglist.Count > 0)
{
foreach (var module in pendinglist.Select(module => module).ToList())
{
//判断当前是否可以注入
if (module.ConstructorList.All(
constructor =>
string.IsNullOrEmpty(constructor.Ref) || model.InstanceCollection.ContainsKey(constructor.Ref)))
{
model.InstanceCollection.Add(
module.Name,
InstantiationModule(module, module.ConstructorList.ToDictionary(
constructor => constructor.Name,
constructor =>
string.IsNullOrEmpty(constructor.Ref) ? constructor.Value : model.InstanceCollection[constructor.Ref])));
pendinglist.Remove(module);
is_load = true;
}
}
if (is_load)
{
is_load = false;
}
else
{
throw new System.Exception("存在无法实例化的模块, 请检查是否配置正确",
new System.Exception(pendinglist.ToType <string>()));
}
}
//加载属性
foreach (var module in model.Modules)
{
var instance = model.InstanceCollection[module.Name];
foreach (var property in module.PropertyList)
{
instance.GetType().GetProperty(property.Name).SetValue(
model.InstanceCollection[module.Name],
string.IsNullOrEmpty(property.Ref) ? property.Value : model.InstanceCollection[property.Ref]);
}
}
return(model);
}