/// <summary>
/// 返回一个实体类型的描述信息（全部属性及字段）。
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
public static ModelDescripton GetModelDescripton(Type type)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
string key = type.FullName;
ModelDescripton mm = (ModelDescripton)s_modelTable[key];
if (mm == null)
{
List <DataMember> list = new List <DataMember>();
(from p in type.GetProperties(BindingFlags.Instance | BindingFlags.Public)
select new PropertyMember(p)).ToList().ForEach(x => list.Add(x));
(from f in type.GetFields(BindingFlags.Instance | BindingFlags.Public)
select new FieldMember(f)).ToList().ForEach(x => list.Add(x));
mm = new ModelDescripton {
Fields = list.ToArray()
};
s_modelTable[key] = mm;
}
return(mm);
}
/// <summary>
/// 返回一个实体类型的指定名称的数据成员
/// </summary>
/// <param name="type"></param>
/// <param name="name"></param>
/// <returns></returns>
public static DataMember GetMemberByName(Type type, string name, bool ifNotFoundThrowException)
{
ModelDescripton description = GetModelDescripton(type);
foreach (DataMember member in description.Fields)
{
if (member.Name == name)
{
return(member);
}
}
if (ifNotFoundThrowException)
{
throw new ArgumentOutOfRangeException(
string.Format("指定的成员 {0} 在类型 {1} 中并不存在。", name, type.ToString()));
}
return(null);
}
/// <summary>
/// 根据HttpRequest填充一个数据实体。
/// 这里不支持嵌套类型的数据实体，且要求各数据成员都是简单的数据类型。
/// </summary>
/// <param name="request"></param>
/// <param name="model"></param>
public static void FillModel(HttpRequest request, object model, string paramName)
{
ModelDescripton descripton = ReflectionHelper.GetModelDescripton(model.GetType());
object val = null;
foreach (DataMember field in descripton.Fields)
{
if (field.Ignore)
{
continue;
}
// 这里的实现方式不支持嵌套类型的数据实体。
// 如果有这方面的需求，可以将这里改成递归的嵌套调用。
val = GetValueByNameAndTypeFrommRequest(
request, field.Name, field.Type.GetRealType(), paramName);
if (val != null)
{
field.SetValue(model, val);
}
}
}
/// <summary>
/// 返回一个实体类型的描述信息（全部属性及字段）。
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
public static ModelDescripton GetModelDescripton(Type type)
{
if (type == null)
throw new ArgumentNullException("type");
string key = type.FullName;
ModelDescripton mm = (ModelDescripton)s_modelTable[key];
if (mm == null)
{
List<DataMember> list = new List<DataMember>();
(from p in type.GetProperties(BindingFlags.Instance | BindingFlags.Public)
select new PropertyMember(p)).ToList().ForEach(x => list.Add(x));
(from f in type.GetFields(BindingFlags.Instance | BindingFlags.Public)
select new FieldMember(f)).ToList().ForEach(x => list.Add(x));
mm = new ModelDescripton { Fields = list.ToArray() };
s_modelTable[key] = mm;
}
return mm;
}
