/// <summary>
/// Delegate passed into the custom body writer to form the outgoing response.
/// </summary>
/// <param name="writer"></param>
/// <param name="syncWriter"></param>
private static void WriteResponse(XmlDictionaryWriter writer, SyncWriter syncWriter)
{
try
{
syncWriter.WriteFeed(writer);
}
catch (Exception exception)
{
// An exception at this point seems to be unrecoverable but ideally we should not hit exceptions since we are only
// writing to the XmlDictionaryWriter.
SyncServiceTracer.TraceError("Exception in WriteResponse method. Details: {0}", WebUtil.GetExceptionMessage(exception));
}
}
NSData CreateRequestBody ()
{
_syncWriter = (SyncWriter)new ODataAtomWriter (base.BaseUri);
_syncWriter.StartFeed (_wrapper.CacheRequest.IsLastBatch, _wrapper.CacheRequest.KnowledgeBlob ?? new byte[0]);
MemoryStream requestStream = new MemoryStream ();
if (_wrapper.CacheRequest.RequestType == CacheRequestType.UploadChanges) {
foreach (IOfflineEntity entity in _wrapper.CacheRequest.Changes) {
// Skip tombstones that dont have a ID element.
if (entity.ServiceMetadata.IsTombstone && string.IsNullOrEmpty (entity.ServiceMetadata.Id)) {
continue;
}
string tempId = null;
// Check to see if this is an insert. i.e ServiceMetadata.Id is null or empty
if (string.IsNullOrEmpty (entity.ServiceMetadata.Id)) {
if (_wrapper.TempIdToEntityMapping == null) {
_wrapper.TempIdToEntityMapping = new Dictionary<string, IOfflineEntity> ();
}
tempId = Guid.NewGuid ().ToString ();
_wrapper.TempIdToEntityMapping.Add (tempId, entity);
}
_syncWriter.AddItem (entity, tempId);
}
}
if (base.SerializationFormat == SerializationFormat.ODataAtom) {
_syncWriter.WriteFeed (XmlWriter.Create (requestStream));
} else {
_syncWriter.WriteFeed (JsonReaderWriterFactory.CreateJsonWriter (requestStream));
}
string result = "";
requestStream.Seek (0, SeekOrigin.Begin);
using (StreamReader reader = new StreamReader (requestStream)) {
result = reader.ReadToEnd ();
}
requestStream.Flush ();
requestStream.Close ();
NSString dataString = new NSString (result);
return dataString.DataUsingEncoding (NSStringEncoding.UTF8);
}