internal void BeginExecute()
{
try
{
IAsyncResult asyncResult;
#if false
if ((null != requestContent) && (0 < requestContent.Length))
{
requestContent.Position = 0;
this.requestStreamContent = requestContent;
this.Request.ContentLength = requestContent.Length;
asyncResult = this.Request.BeginGetRequestStream(QueryAsyncResult.AsyncEndGetRequestStream, this);
}
else
#endif
{
asyncResult = BaseAsyncResult.InvokeAsync(this.Request.BeginGetResponse, QueryResult.AsyncEndGetResponse, this);
}
this.CompletedSynchronously &= asyncResult.CompletedSynchronously;
}
catch (Exception e)
{
this.HandleFailure(e);
throw;
}
finally
{
this.HandleCompleted();
}
Debug.Assert(!this.CompletedSynchronously || this.IsCompleted, "if CompletedSynchronously then MUST IsCompleted");
}
internal void BatchBeginRequest()
{
BaseAsyncResult.PerRequest pereq = null;
try
{
ODataRequestMessageWrapper request = this.GenerateBatchRequest();
if (request != null)
{
request.SetContentLengthHeader();
base.perRequest = pereq = new BaseAsyncResult.PerRequest();
pereq.Request = request;
pereq.RequestContentStream = new BaseAsyncResult.ContentStream(request.CachedRequestStream, true);
BaseAsyncResult.AsyncStateBag state = new BaseAsyncResult.AsyncStateBag(pereq, (DataServiceContext)base.Source);
this.responseStream = new MemoryStream();
IAsyncResult result = BaseAsyncResult.InvokeAsync(new Func <ODataRequestMessageWrapper, AsyncCallback, object, IAsyncResult>(WebUtil.BeginGetRequestStream), request, new AsyncCallback(this.AsyncEndGetRequestStream), state);
pereq.SetRequestCompletedSynchronously(result.CompletedSynchronously);
}
}
catch (Exception exception)
{
base.HandleFailure(pereq, exception);
throw;
}
finally
{
this.HandleCompleted(pereq);
}
}
/// <summary>
/// Make async calls to read the response stream.
/// </summary>
/// <param name="asyncStateBag">the state containing the information about the asynchronous operation.</param>
private void ReadResponseStream(AsyncStateBag asyncStateBag)
{
Debug.Assert(asyncStateBag != null, "asyncStateBag != null");
PerRequest pereq = asyncStateBag.PerRequest;
IAsyncResult asyncResult = null;
byte[] buffer = this.asyncStreamCopyBuffer;
Stream httpResponseStream = pereq.ResponseStream;
do
{
int bufferOffset = 0;
int bufferLength = buffer.Length;
this.usingBuffer = true;
#if WINRT
asyncResult = BaseAsyncResult.InvokeTask(httpResponseStream.ReadAsync, buffer, bufferOffset, bufferLength, this.AsyncEndRead, asyncStateBag);
#else
asyncResult = BaseAsyncResult.InvokeAsync(httpResponseStream.BeginRead, buffer, bufferOffset, bufferLength, this.AsyncEndRead, asyncStateBag);
#endif
pereq.SetRequestCompletedSynchronously(asyncResult.CompletedSynchronously);
this.SetCompletedSynchronously(asyncResult.CompletedSynchronously); // BeginRead
}
while (asyncResult.CompletedSynchronously && !pereq.RequestCompleted && !this.IsCompletedInternally && httpResponseStream.CanRead);
Debug.Assert((!this.CompletedSynchronously && !pereq.RequestCompletedSynchronously) || this.IsCompletedInternally || pereq.RequestCompleted, "AsyncEndGetResponse !IsCompleted");
}
private static void ReadResponseStream(QueryResult queryResult)
{
IAsyncResult asyncResult;
byte[] buffer = queryResult.asyncStreamCopyBuffer;
Stream stream = queryResult.asyncResponseStream;
do
{
int bufferOffset, bufferLength;
#if StreamContainsBuffer
if (state.responseStreamIsCopyBuffer)
{
bufferOffset = checked ((int)state.responseStream.Position);
bufferLength = buffer.Length - bufferOffset;
}
else
#endif
{
bufferOffset = 0;
bufferLength = buffer.Length;
}
queryResult.usingBuffer = true;
asyncResult = BaseAsyncResult.InvokeAsync(stream.BeginRead, buffer, bufferOffset, bufferLength, QueryResult.AsyncEndRead, queryResult);
queryResult.CompletedSynchronously &= asyncResult.CompletedSynchronously;
}while (asyncResult.CompletedSynchronously && !queryResult.IsCompletedInternally && stream.CanRead);
Debug.Assert(!queryResult.CompletedSynchronously || queryResult.IsCompletedInternally, "AsyncEndGetResponse !IsCompleted");
}
internal static QueryResult EndExecute <TElement>(object source, IAsyncResult asyncResult)
{
QueryResult response = null;
try
{
response = BaseAsyncResult.EndExecute <QueryResult>(source, "Execute", asyncResult);
}
catch (InvalidOperationException ex)
{
response = asyncResult as QueryResult;
Debug.Assert(response != null, "response != null, BaseAsyncResult.EndExecute() would have thrown a different exception otherwise.");
QueryOperationResponse operationResponse = response.GetResponse <TElement>(MaterializeAtom.EmptyResults);
if (operationResponse != null)
{
operationResponse.Error = ex;
throw new DataServiceQueryException(Strings.DataServiceException_GeneralError, ex, operationResponse);
}
throw;
}
return(response);
}
protected override void AsyncEndGetResponse(IAsyncResult asyncResult)
{
BaseAsyncResult.AsyncStateBag asyncState = asyncResult.AsyncState as BaseAsyncResult.AsyncStateBag;
BaseAsyncResult.PerRequest request = (asyncState == null) ? null : asyncState.PerRequest;
DataServiceContext context = (asyncState == null) ? null : asyncState.Context;
try
{
this.CompleteCheck(request, InternalError.InvalidEndGetResponseCompleted);
request.SetRequestCompletedSynchronously(asyncResult.CompletedSynchronously);
BaseAsyncResult.EqualRefCheck(base.perRequest, request, InternalError.InvalidEndGetResponse);
ODataRequestMessageWrapper wrapper = Util.NullCheck <ODataRequestMessageWrapper>(request.Request, InternalError.InvalidEndGetResponseRequest);
HttpWebResponse response = null;
response = WebUtil.EndGetResponse(wrapper, asyncResult, context);
request.HttpWebResponse = Util.NullCheck <HttpWebResponse>(response, InternalError.InvalidEndGetResponseResponse);
if (!this.IsBatch)
{
this.HandleOperationResponse(response);
this.HandleOperationResponseHeaders(response.StatusCode, WebUtil.WrapResponseHeaders(response));
}
Stream responseStream = WebUtil.GetResponseStream(response, context);
request.ResponseStream = responseStream;
if ((responseStream != null) && responseStream.CanRead)
{
if (this.buildBatchBuffer == null)
{
this.buildBatchBuffer = new byte[0x1f40];
}
do
{
asyncResult = BaseAsyncResult.InvokeAsync(new BaseAsyncResult.AsyncAction(responseStream.BeginRead), this.buildBatchBuffer, 0, this.buildBatchBuffer.Length, new AsyncCallback(this.AsyncEndRead), new AsyncReadState(request));
request.SetRequestCompletedSynchronously(asyncResult.CompletedSynchronously);
}while (((asyncResult.CompletedSynchronously && !request.RequestCompleted) && !base.IsCompletedInternally) && responseStream.CanRead);
}
else
{
request.SetComplete();
if (!base.IsCompletedInternally && !request.RequestCompletedSynchronously)
{
this.FinishCurrentChange(request);
}
}
}
catch (Exception exception)
{
if (base.HandleFailure(request, exception))
{
throw;
}
}
finally
{
this.HandleCompleted(request);
}
}
private void AsyncEndRead(IAsyncResult asyncResult)
{
AsyncReadState asyncState = (AsyncReadState)asyncResult.AsyncState;
BaseAsyncResult.PerRequest pereq = asyncState.Pereq;
int count = 0;
try
{
this.CompleteCheck(pereq, InternalError.InvalidEndReadCompleted);
pereq.SetRequestCompletedSynchronously(asyncResult.CompletedSynchronously);
BaseAsyncResult.EqualRefCheck(base.perRequest, pereq, InternalError.InvalidEndRead);
Stream stream = Util.NullCheck <Stream>(pereq.ResponseStream, InternalError.InvalidEndReadStream);
count = stream.EndRead(asyncResult);
if (0 < count)
{
Util.NullCheck <Stream>(this.ResponseStream, InternalError.InvalidEndReadCopy).Write(this.buildBatchBuffer, 0, count);
asyncState.TotalByteCopied += count;
if (!asyncResult.CompletedSynchronously && stream.CanRead)
{
do
{
asyncResult = BaseAsyncResult.InvokeAsync(new BaseAsyncResult.AsyncAction(stream.BeginRead), this.buildBatchBuffer, 0, this.buildBatchBuffer.Length, new AsyncCallback(this.AsyncEndRead), asyncState);
pereq.SetRequestCompletedSynchronously(asyncResult.CompletedSynchronously);
if ((!asyncResult.CompletedSynchronously || pereq.RequestCompleted) || base.IsCompletedInternally)
{
return;
}
}while (stream.CanRead);
}
}
else
{
pereq.SetComplete();
if (!base.IsCompletedInternally && !pereq.RequestCompletedSynchronously)
{
this.FinishCurrentChange(pereq);
}
}
}
catch (Exception exception)
{
if (base.HandleFailure(pereq, exception))
{
throw;
}
}
finally
{
this.HandleCompleted(pereq);
}
}
internal void Begin()
{
try
{
IAsyncResult result = BaseAsyncResult.InvokeAsync(new Func <ODataRequestMessageWrapper, AsyncCallback, object, IAsyncResult>(WebUtil.BeginGetResponse), this.requestMessage, new AsyncCallback(this.AsyncEndGetResponse), null);
base.SetCompletedSynchronously(result.CompletedSynchronously);
}
catch (Exception exception)
{
base.HandleFailure(exception);
throw;
}
finally
{
base.HandleCompleted();
}
}
private void ReadResponseStream(BaseAsyncResult.AsyncStateBag asyncStateBag)
{
BaseAsyncResult.PerRequest perRequest = asyncStateBag.PerRequest;
IAsyncResult result = null;
byte[] asyncStreamCopyBuffer = this.asyncStreamCopyBuffer;
Stream responseStream = perRequest.ResponseStream;
do
{
int offset = 0;
int length = asyncStreamCopyBuffer.Length;
this.usingBuffer = true;
result = BaseAsyncResult.InvokeAsync(new BaseAsyncResult.AsyncAction(responseStream.BeginRead), asyncStreamCopyBuffer, offset, length, new AsyncCallback(this.AsyncEndRead), asyncStateBag);
perRequest.SetRequestCompletedSynchronously(result.CompletedSynchronously);
base.SetCompletedSynchronously(result.CompletedSynchronously);
}while ((result.CompletedSynchronously && !perRequest.RequestCompleted) && (!base.IsCompletedInternally && responseStream.CanRead));
}
/// <summary>
/// Begins the async request
/// </summary>
internal void Begin()
{
try
{
IAsyncResult asyncResult = BaseAsyncResult.InvokeAsync(this.requestMessage.BeginGetResponse, this.AsyncEndGetResponse, null);
this.SetCompletedSynchronously(asyncResult.CompletedSynchronously);
}
catch (Exception e)
{
this.HandleFailure(e);
throw;
}
finally
{
this.HandleCompleted();
}
Debug.Assert(!this.CompletedSynchronously || this.IsCompleted, "if CompletedSynchronously then MUST IsCompleted");
}
/// <summary>start the asynchronous request</summary>
internal void BeginExecuteQuery()
{
IAsyncResult asyncResult = null;
PerRequest pereq = new PerRequest();
AsyncStateBag asyncStateBag = new AsyncStateBag(pereq);
pereq.Request = this.Request;
this.perRequest = pereq;
try
{
if (this.requestContentStream != null && this.requestContentStream.Stream != null)
{
if (this.requestContentStream.IsKnownMemoryStream)
{
this.Request.SetContentLengthHeader();
}
this.perRequest.RequestContentStream = this.requestContentStream;
asyncResult = BaseAsyncResult.InvokeAsync(this.Request.BeginGetRequestStream, this.AsyncEndGetRequestStream, asyncStateBag);
}
else
{
asyncResult = BaseAsyncResult.InvokeAsync(this.Request.BeginGetResponse, this.AsyncEndGetResponse, asyncStateBag);
}
// TODO:: Bug: 298920: Async execute methods for query (QueryResult.cs), should not need to maintain "CompletedSynchronously" information in two state variables.
pereq.SetRequestCompletedSynchronously(asyncResult.CompletedSynchronously);
this.SetCompletedSynchronously(asyncResult.CompletedSynchronously);
}
catch (Exception e)
{
this.HandleFailure(e);
throw;
}
finally
{
this.HandleCompleted(pereq);
}
Debug.Assert((!this.CompletedSynchronously && !pereq.RequestCompletedSynchronously) || this.IsCompleted, "if CompletedSynchronously then MUST IsCompleted");
}
internal static QueryResult EndExecuteQuery <TElement>(object source, string method, IAsyncResult asyncResult)
{
QueryResult result = null;
try
{
result = BaseAsyncResult.EndExecute <QueryResult>(source, method, asyncResult);
}
catch (InvalidOperationException exception)
{
result = asyncResult as QueryResult;
QueryOperationResponse response = result.GetResponse <TElement>(MaterializeAtom.EmptyResults);
if (response != null)
{
response.Error = exception;
throw new DataServiceQueryException(System.Data.Services.Client.Strings.DataServiceException_GeneralError, exception, response);
}
throw;
}
return(result);
}
internal void Begin()
{
try
{
IAsyncResult asyncResult;
asyncResult = BaseAsyncResult.InvokeAsync(this.request.BeginGetResponse, GetReadStreamResult.AsyncEndGetResponse, this);
this.CompletedSynchronously &= asyncResult.CompletedSynchronously;
}
catch (Exception e)
{
this.HandleFailure(e);
throw;
}
finally
{
this.HandleCompleted();
}
Debug.Assert(!this.CompletedSynchronously || this.IsCompleted, "if CompletedSynchronously then MUST IsCompleted");
}
internal void BeginExecuteQuery(DataServiceContext context)
{
IAsyncResult result = null;
BaseAsyncResult.PerRequest pereq = new BaseAsyncResult.PerRequest();
BaseAsyncResult.AsyncStateBag state = new BaseAsyncResult.AsyncStateBag(pereq, context);
pereq.Request = this.Request;
base.perRequest = pereq;
try
{
if ((this.requestContentStream != null) && (this.requestContentStream.Stream != null))
{
if (this.requestContentStream.IsKnownMemoryStream)
{
this.Request.SetContentLengthHeader();
}
base.perRequest.RequestContentStream = this.requestContentStream;
result = BaseAsyncResult.InvokeAsync(new Func <ODataRequestMessageWrapper, AsyncCallback, object, IAsyncResult>(WebUtil.BeginGetRequestStream), this.Request, new AsyncCallback(this.AsyncEndGetRequestStream), state);
}
else
{
result = BaseAsyncResult.InvokeAsync(new Func <ODataRequestMessageWrapper, AsyncCallback, object, IAsyncResult>(WebUtil.BeginGetResponse), this.Request, new AsyncCallback(this.AsyncEndGetResponse), state);
}
pereq.SetRequestCompletedSynchronously(result.CompletedSynchronously);
base.SetCompletedSynchronously(result.CompletedSynchronously);
}
catch (Exception exception)
{
base.HandleFailure(exception);
throw;
}
finally
{
this.HandleCompleted(pereq);
}
}
internal static IAsyncResult InvokeAsync(AsyncAction asyncAction, byte[] buffer, int offset, int length, AsyncCallback callback, object state)
{
IAsyncResult asyncResult = asyncAction(buffer, offset, length, BaseAsyncResult.GetDataServiceAsyncCallback(callback), state);
return(PostInvokeAsync(asyncResult, callback));
}
internal static IAsyncResult InvokeAsync(Func <AsyncCallback, object, IAsyncResult> asyncAction, AsyncCallback callback, object state)
{
IAsyncResult asyncResult = asyncAction(BaseAsyncResult.GetDataServiceAsyncCallback(callback), state);
return(PostInvokeAsync(asyncResult, callback));
}
internal void BeginCreateNextChange()
{
HttpWebResponse response;
this.inMemoryResponseStream = new MemoryStream();
BaseAsyncResult.PerRequest pereq = null;
IAsyncResult result = null;
Label_000F:
response = null;
ODataRequestMessageWrapper requestMessage = null;
try
{
if (base.perRequest != null)
{
base.SetCompleted();
System.Data.Services.Client.Error.ThrowInternalError(InternalError.InvalidBeginNextChange);
}
requestMessage = this.CreateNextRequest();
if (requestMessage == null)
{
base.Abortable = null;
}
if ((requestMessage != null) || (base.entryIndex < base.ChangedEntries.Count))
{
if (base.ChangedEntries[base.entryIndex].ContentGeneratedForSave)
{
goto Label_0191;
}
base.Abortable = requestMessage;
BaseAsyncResult.ContentStream stream = this.CreateNonBatchChangeData(base.entryIndex, requestMessage);
base.perRequest = pereq = new BaseAsyncResult.PerRequest();
pereq.Request = requestMessage;
BaseAsyncResult.AsyncStateBag state = new BaseAsyncResult.AsyncStateBag(pereq, (DataServiceContext)base.Source);
if ((stream == null) || (stream.Stream == null))
{
result = BaseAsyncResult.InvokeAsync(new Func <ODataRequestMessageWrapper, AsyncCallback, object, IAsyncResult>(WebUtil.BeginGetResponse), requestMessage, new AsyncCallback(this.AsyncEndGetResponse), state);
}
else
{
if (stream.IsKnownMemoryStream)
{
requestMessage.SetContentLengthHeader();
}
pereq.RequestContentStream = stream;
result = BaseAsyncResult.InvokeAsync(new Func <ODataRequestMessageWrapper, AsyncCallback, object, IAsyncResult>(WebUtil.BeginGetRequestStream), requestMessage, new AsyncCallback(this.AsyncEndGetRequestStream), state);
}
pereq.SetRequestCompletedSynchronously(result.CompletedSynchronously);
base.SetCompletedSynchronously(pereq.RequestCompletedSynchronously);
}
else
{
base.SetCompleted();
if (base.CompletedSynchronously)
{
this.HandleCompleted(pereq);
}
}
}
catch (InvalidOperationException exception)
{
WebUtil.GetHttpWebResponse(exception, ref response);
this.HandleOperationException(exception, response);
this.HandleCompleted(pereq);
}
finally
{
if (response != null)
{
response.Close();
}
}
if (((pereq != null) && pereq.RequestCompleted) && (pereq.RequestCompletedSynchronously && !base.IsCompletedInternally))
{
this.FinishCurrentChange(pereq);
}
Label_0191:
if (((pereq == null) || (pereq.RequestCompleted && pereq.RequestCompletedSynchronously)) && !base.IsCompletedInternally)
{
goto Label_000F;
}
}
