private QueryResult CreateResult(object source, DataServiceContext context, AsyncCallback callback, object state)
{
Debug.Assert(null != context, "context is null");
HttpWebRequest request = context.CreateRequest(this.QueryComponents.Uri, XmlConstants.HttpMethodGet, false, null, this.QueryComponents.Version, false);
return(new QueryResult(source, "Execute", this, request, callback, state));
}
internal long GetQuerySetCount(DataServiceContext context)
{
Debug.Assert(null != context, "context is null");
this.QueryComponents.Version = Util.DataServiceVersion2;
QueryResult response = null;
DataServiceRequest<long> serviceRequest = new DataServiceRequest<long>(this.QueryComponents, null);
HttpWebRequest request = context.CreateRequest(this.QueryComponents.Uri, XmlConstants.HttpMethodGet, false, null, this.QueryComponents.Version, false);
request.Accept = "text/plain";
response = new QueryResult(this, "Execute", serviceRequest, request, null, null);
try
{
response.Execute();
if (HttpStatusCode.NoContent != response.StatusCode)
{
StreamReader sr = new StreamReader(response.GetResponseStream());
long r = -1;
try
{
r = XmlConvert.ToInt64(sr.ReadToEnd());
}
finally
{
sr.Close();
}
return r;
}
else
{
throw new DataServiceQueryException(Strings.DataServiceRequest_FailGetCount, response.Failure);
}
}
catch (InvalidOperationException ex)
{
QueryOperationResponse operationResponse = null;
operationResponse = response.GetResponse<long>(MaterializeAtom.EmptyResults);
if (null != operationResponse)
{
operationResponse.Error = ex;
throw new DataServiceQueryException(Strings.DataServiceException_GeneralError, ex, operationResponse);
}
throw;
}
}