public async Task <HttpResponseMessage> Get(string format = "array")
{
var user = GetSessionUser(Request.Headers.GetCookies().FirstOrDefault());
JDBCEntity currentEntity = null;//当前处理的Entity信息
try
{
Uri uri = ParseToQueryUri(Request.RequestUri);
List <JDBCEntity> findNode = (await MyCoreApi.FindNodeByUriAsync(uri)).ToList(); //根据uri查找父节点
if (findNode.Count != 1) //节点数不唯一
{
throw new Exception("Please specify one Node!");
}
else
{
currentEntity = findNode.FirstOrDefault();
}
if (!await MyCoreApi.Authorization(currentEntity.Id, user, "4"))
{
throw new Exception("Not authorization!");
}
if (currentEntity.EntityType != JDBCEntityType.Signal)
{
throw new Exception("The specifed node is not signal!");
}
//get data
ITypedSignal typedSignal = currentEntity as ITypedSignal;
var result = await typedSignal.GetDataAsync(uri.Fragment, format);
return(new HttpResponseMessage {
StatusCode = HttpStatusCode.OK, Content = new StringContent(SerializeObjectToString(result), System.Text.Encoding.GetEncoding("UTF-8"), "application/json")
});
}
catch (Exception e)
{
if (currentEntity == null)
{
return(new HttpResponseMessage {
StatusCode = HttpStatusCode.Forbidden, Content = new StringContent(e.InnerException != null ? e.InnerException.Message : e.Message)
});
}
var response = new ResponseDataMessage
{
Fail = new
{
Description = e.InnerException != null ? e.InnerException.Message : e.Message,
Id = currentEntity.Id,
Path = currentEntity.Path
}
};
return(new HttpResponseMessage {
StatusCode = HttpStatusCode.Forbidden, Content = new StringContent(SerializeObjectToString(response), System.Text.Encoding.GetEncoding("UTF-8"), "application/json")
});
}
}
/// <summary>
/// 查询得到数据
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="query"></param>
/// <param name="format"></param>
/// <returns></returns>
public async Task <object> GetDataByUriAsync(Uri uri, string format)
{
IQueryPlugIn queryPathPlugIn = GetBestQueryPlugin(uri);
ITypedSignal signal = (await queryPathPlugIn.FindJdbcEntityAsync(uri.PathAndQuery)).FirstOrDefault() as ITypedSignal;
if (signal != null)
{
return(await signal.GetDataAsync(uri.Fragment, format));
}
else
{
throw new Exception(ErrorMessages.ExperimentOrSignalNotFoundError);
}
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="signal"></param>
/// <param name="fragment"></param>
public SignalDataStream(ITypedSignal signal, string fragment)
{
this.signal = signal;
this.fragment = fragment;
}
