public static OeOperationMessage Create(OeMessageContext context, ODataBatchReader reader)
{
ODataBatchOperationRequestMessage batchRequest = reader.CreateOperationRequestMessage();
var operation = new OeOperationMessage(batchRequest);
if (batchRequest.Method == ODataConstants.MethodDelete)
{
operation.EntityItem = operation.ReadEntityFromUrl(context);
}
else
{
using (Stream stream = batchRequest.GetStream())
operation.EntityItem = operation.ReadEntityFromStream(context, stream);
}
return(operation);
}
private async Task ExecuteOperation(OeOperationMessage operation, CancellationToken cancellationToken)
{
Object dataContext = null;
try
{
dataContext = _dataAdapter.CreateDataContext();
AddToEntitySet(dataContext, operation);
await _dataAdapter.SaveChangesAsync(_model, dataContext, cancellationToken).ConfigureAwait(false);
}
finally
{
if (dataContext != null)
{
_dataAdapter.CloseDataContext(dataContext);
}
}
}
private void AddToEntitySet(Object dataContext, OeOperationMessage operation)
{
Db.OeEntitySetAdapter entitySetAdapter = _dataAdapter.GetEntitySetAdapter(operation.EntityItem.EntitySet.Name);
switch (operation.Method)
{
case ODataConstants.MethodDelete:
entitySetAdapter.RemoveEntity(dataContext, operation.EntityItem.Entity);
break;
case ODataConstants.MethodPatch:
entitySetAdapter.AttachEntity(dataContext, operation.EntityItem.Entity);
break;
case ODataConstants.MethodPost:
entitySetAdapter.AddEntity(dataContext, operation.EntityItem.Entity);
break;
default:
throw new NotImplementedException(operation.Method);
}
}
public static OeBatchMessage CreateBatchMessage(OeMessageContext context, Stream requestStream, String contentType)
{
IODataRequestMessage requestMessage = new OeInMemoryMessage(requestStream, contentType);
var settings = new ODataMessageReaderSettings()
{
EnableMessageStreamDisposal = false
};
using (var messageReader = new ODataMessageReader(requestMessage, settings))
{
var batchMessage = new List <OeBatchMessage>();
ODataBatchReader batchReader = messageReader.CreateODataBatchReader();
while (batchReader.Read())
{
if (batchReader.State == ODataBatchReaderState.ChangesetStart)
{
var operations = new List <OeOperationMessage>();
while (batchReader.Read() && batchReader.State != ODataBatchReaderState.ChangesetEnd)
{
if (batchReader.State == ODataBatchReaderState.Operation)
{
OeOperationMessage operation = OeOperationMessage.Create(context, batchReader);
operations.Add(operation);
}
}
return(new OeBatchMessage(contentType, operations));
}
else if (batchReader.State == ODataBatchReaderState.Operation)
{
OeOperationMessage operation = OeOperationMessage.Create(context, batchReader);
return(new OeBatchMessage(contentType, operation));
}
}
}
throw new InvalidOperationException("batch not found");
}
private OeBatchMessage(String contentType, OeOperationMessage operation)
{
_contentType = contentType;
_operation = operation;
}
