/// <summary>
/// Synchronizely get the query set count from the server by executing the $count=value query
/// </summary>
/// <param name="context">The context</param>
/// <returns>The server side count of the query set</returns>
internal long GetQuerySetCount(DataServiceContext context)
{
Debug.Assert(null != context, "context is null");
Version requestVersion = this.QueryComponents(context.Model).Version;
if (requestVersion == null || requestVersion.Major < 2)
{
// minimum DSV for $count is V2.
requestVersion = Util.DataServiceVersion2;
}
QueryResult response = null;
QueryComponents qc = this.QueryComponents(context.Model);
Uri requestUri = qc.Uri;
DataServiceRequest <long> serviceRequest = new DataServiceRequest <long>(requestUri, qc, null);
HeaderCollection headers = new HeaderCollection();
// Validate and set the request DSV header
headers.SetRequestVersion(requestVersion, context.MaxProtocolVersionAsVersion);
context.Format.SetRequestAcceptHeaderForCount(headers);
string httpMethod = XmlConstants.HttpMethodGet;
ODataRequestMessageWrapper request = context.CreateODataRequestMessage(
context.CreateRequestArgsAndFireBuildingRequest(httpMethod, requestUri, headers, context.HttpStack, null /*descriptor*/),
new string[] { XmlConstants.HttpRequestAccept } /*headersToReset*/,
null /*descriptor*/);
response = new QueryResult(this, Util.ExecuteMethodName, serviceRequest, request, new RequestInfo(context), null, null);
response.AllowDirectNetworkStreamReading = context.AllowDirectNetworkStreamReading;
IODataResponseMessage responseMessage = null;
try
{
responseMessage = response.ExecuteQuery();
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;
}
finally
{
WebUtil.DisposeMessage(responseMessage);
}
}
public DataServiceQueryException(string message, Exception innerException, QueryOperationResponse response) : base(message, innerException)
{
this.response = response;
}
/// <summary>Constructor</summary>
/// <param name="queryOperationResponse">The response for the Load operation. null when the operation didn't succeed.</param>
/// <param name="error"><see cref="Exception"/> which represents the error if the Load operation failed. null if the operation
/// didn't fail.</param>
/// <remarks>This constructor doesn't allow creation of canceled event args.</remarks>
internal LoadCompletedEventArgs(QueryOperationResponse queryOperationResponse, Exception error)
: this(queryOperationResponse, error, false)
{
}
private IEnumerable <OperationResponse> HandleBatchResponse(ODataBatchReader batchReader)
{
if (this.batchMessageReader == null)
{
goto Label_056D;
}
bool iteratorVariable0 = false;
bool iteratorVariable1 = false;
int index = 0;
int iteratorVariable3 = 0;
this.entryIndex = 0;
Label_PostSwitchInIterator :;
while (batchReader.Read())
{
Exception iteratorVariable4;
switch (batchReader.State)
{
case ODataBatchReaderState.Operation:
{
iteratorVariable4 = this.ProcessCurrentOperationResponse(batchReader);
if (iteratorVariable1)
{
break;
}
QueryOperationResponse iteratorVariable5 = null;
try
{
if (iteratorVariable4 == null)
{
DataServiceRequest query = this.Queries[index];
MaterializeAtom results = DataServiceRequest.Materialize(this.RequestInfo.GetDeserializationInfo(null), query.QueryComponents(this.RequestInfo.MaxProtocolVersion), null, this.currentOperationResponse.GetHeader("Content-Type"), this.currentOperationResponse.CreateResponseMessage(), query.PayloadKind);
iteratorVariable5 = QueryOperationResponse.GetInstance(query.ElementType, this.currentOperationResponse.Headers, query, results);
}
}
catch (ArgumentException exception)
{
iteratorVariable4 = exception;
}
catch (FormatException exception2)
{
iteratorVariable4 = exception2;
}
catch (InvalidOperationException exception3)
{
iteratorVariable4 = exception3;
}
if (iteratorVariable5 == null)
{
if (this.Queries == null)
{
throw iteratorVariable4;
}
DataServiceRequest request2 = this.Queries[index];
if (this.RequestInfo.IgnoreResourceNotFoundException && (this.currentOperationResponse.StatusCode == HttpStatusCode.NotFound))
{
iteratorVariable5 = QueryOperationResponse.GetInstance(request2.ElementType, this.currentOperationResponse.Headers, request2, MaterializeAtom.EmptyResults);
}
else
{
iteratorVariable5 = QueryOperationResponse.GetInstance(request2.ElementType, this.currentOperationResponse.Headers, request2, MaterializeAtom.EmptyResults);
iteratorVariable5.Error = iteratorVariable4;
}
}
iteratorVariable5.StatusCode = (int)this.currentOperationResponse.StatusCode;
index++;
yield return(iteratorVariable5);
goto Label_PostSwitchInIterator;
}
case ODataBatchReaderState.ChangesetStart:
{
if ((this.IsBatch && iteratorVariable0) || (iteratorVariable3 != 0))
{
System.Data.Services.Client.Error.ThrowBatchUnexpectedContent(InternalError.UnexpectedBeginChangeSet);
}
iteratorVariable1 = true;
continue;
}
case ODataBatchReaderState.ChangesetEnd:
{
iteratorVariable0 = true;
iteratorVariable3 = 0;
iteratorVariable1 = false;
continue;
}
default:
goto Label_0491;
}
this.entryIndex = this.ValidateContentID(this.currentOperationResponse.Headers);
try
{
Descriptor descriptor = this.ChangedEntries[this.entryIndex];
iteratorVariable3 += this.SaveResultProcessed(descriptor);
if (iteratorVariable4 != null)
{
throw iteratorVariable4;
}
this.HandleOperationResponseHeaders(this.currentOperationResponse.StatusCode, this.currentOperationResponse.Headers);
this.HandleOperationResponse(descriptor, this.currentOperationResponse.Headers);
}
catch (Exception exception4)
{
this.ChangedEntries[this.entryIndex].SaveError = exception4;
iteratorVariable4 = exception4;
if (!CommonUtil.IsCatchableExceptionType(exception4))
{
throw;
}
}
ChangeOperationResponse iteratorVariable6 = new ChangeOperationResponse(this.currentOperationResponse.Headers, this.ChangedEntries[this.entryIndex])
{
StatusCode = (int)this.currentOperationResponse.StatusCode
};
if (iteratorVariable4 != null)
{
iteratorVariable6.Error = iteratorVariable4;
}
iteratorVariable3++;
this.entryIndex++;
yield return(iteratorVariable6);
goto Label_PostSwitchInIterator;
Label_0491:
System.Data.Services.Client.Error.ThrowBatchExpectedResponse(InternalError.UnexpectedBatchState);
}
if (((this.Queries == null) && ((!iteratorVariable0 || (0 < index)) || (this.ChangedEntries.Any <Descriptor>(o => (o.ContentGeneratedForSave && (o.SaveResultWasProcessed == 0))) && (!this.IsBatch || (this.ChangedEntries.FirstOrDefault <Descriptor>(o => (o.SaveError != null)) == null))))) || ((this.Queries != null) && (index != this.Queries.Length)))
{
throw System.Data.Services.Client.Error.InvalidOperation(System.Data.Services.Client.Strings.Batch_IncompleteResponseCount);
}
Label_056D:
yield break;
}
internal LoadCompletedEventArgs(QueryOperationResponse queryOperationResponse, Exception error)
: base(error, false, null)
{
this.queryOperationResponse = queryOperationResponse;
}
