/// <summary>
/// 得到指定对象实例的属性值
/// </summary>
public static System.Object GetProperty(System.Object target, System.String propertyName)
{
if (target == null)
{
throw new System.ArgumentException("No target specified");
}
if (propertyName == null)
{
throw new System.ArgumentException("No propertyName specified");
}
// 得到嵌套列表
string[] names = PickPropertyNames(propertyName);
int len = names.Length;
object child = target;
for (int i = 0; i < len; i++)
{
IDynaAccessProxy proxy = GetObjectProxy(child);
child = proxy.GetProperty(child, names[i]);
if (child == null)
{
break;
}
}
return(child);
}
/// <summary>
/// 判断指定对象实例是否存在该属性
/// </summary>
public static bool HasProperty(object target, string propertyName)
{
if (target == null || propertyName == null)
{
return(false);
}
string[] names = PickPropertyNames(propertyName);
int len = names.Length;
object child = target;
for (int i = 0; i < (len - 1); i++)
{
IDynaAccessProxy proxy = GetObjectProxy(child);
object parent = child;
child = proxy.GetProperty(parent, names[i]);
if (child == null)
{
try
{
child = Activator.CreateInstance(proxy.GetPropertyType(parent, names[i]));
}
catch (Exception)
{
return(false);
}
}
}
IDynaAccessProxy endProxy = GetObjectProxy(child);
return(endProxy.HasProperty(child, names[len - 1]));
}
/// <summary>
/// 得到指定对象实例的动态属性访问代理
/// </summary>
public static IDynaAccessProxy GetObjectProxy(object target)
{
if (target == null)
{
throw new System.ArgumentException("No target specified");
}
if (target is IDictionary)
{
return(_dictionaryProxy);
}
else if (target is IList)
{
return(_listProxy);
}
else
{
Type type = target.GetType();
lock (type)
{
IDynaAccessProxy cache = (IDynaAccessProxy)_proxyCache[type];
if (cache == null)
{
cache = new BasicProxy(type);
_proxyCache.Add(type, cache);
}
return(cache);
}
}
}
/// <summary>
/// 设置指定对象实例的属性值
/// </summary>
public static void SetProperty(System.Object target, System.String propertyName, System.Object propertyValue)
{
if (target == null)
{
throw new System.ArgumentException("No target specified");
}
if (propertyName == null)
{
throw new System.ArgumentException("No name specified");
}
string[] names = PickPropertyNames(propertyName);
int len = names.Length;
object child = target;
for (int i = 0; i < (len - 1); i++)
{
IDynaAccessProxy proxy = GetObjectProxy(child);
object parent = child;
child = proxy.GetProperty(parent, names[i]);
if (child == null)
{
try
{
child = Activator.CreateInstance(proxy.GetPropertyType(parent, names[i]));
proxy.SetProperty(parent, names[i], child);
}
catch (Exception e)
{
throw new DynaAccessException(e);
}
}
}
IDynaAccessProxy setProxy = GetObjectProxy(child);
setProxy.SetProperty(child, names[len - 1], propertyValue);
}
/// <summary>
/// 得到指定对象实例的属性名称字串数组
/// </summary>
public static string[] GetPropertyNames(object target)
{
IDynaAccessProxy proxy = GetObjectProxy(target);
return(proxy.GetPropertyNames(target));
}
