/// <summary>
/// 使用门户查询
/// </summary>
/// <param name="objectType"></param>
/// <param name="criteria"></param>
/// <param name="loc">如果一个数据层方法需要在本地执行，应该在把本参数指明为 Local。</param>
/// <returns></returns>
public static object Fetch(Type objectType, object criteria, DataPortalLocation loc = DataPortalLocation.Dynamic)
{
try
{
RafyEnvironment.ThreadPortalCount++;
object res = null;
//只是不要纯客户端，都直接使用本地访问
if (loc == DataPortalLocation.Local || RafyEnvironment.Location.ConnectDataDirectly)
{
res = FinalDataPortal.Fetch(objectType, criteria);
}
else
{
var proxy = GetDataPortalProxy();
var dpContext = CreateDataPortalContext();
var result = proxy.Fetch(objectType, criteria, dpContext);
res = ReadServerResult(result);
}
return(res);
}
finally
{
RafyEnvironment.ThreadPortalCount--;
}
}
/// <summary>
/// Get an existing business object.
/// </summary>
/// <param name="objectType">Type of business object to retrieve.</param>
/// <param name="criteria">Criteria object describing business object.</param>
/// <param name="context"><see cref="DataPortalContext" /> object passed to the server.</param>
/// <returns></returns>
public DataPortalResult Fetch(Type objectType, object criteria, DataPortalContext context)
{
try
{
SetContext(context);
var portal = new FinalDataPortal();
var result = portal.Fetch(objectType, criteria, context);
return(result);
}
finally
{
ClearContext(context);
}
}