public async Task<JObject> UploadUpdate(JObject item, Uri tableUri, IHttp http, IDictionary<string, string> parameters = null)
{
string version = null;
JToken versionToken = item["__version"];
if(versionToken != null)
{
version = versionToken.ToString();
}
else if(http.OriginalRequest != null)
{
EntityTagHeaderValue tag = http.OriginalRequest.Headers.IfMatch.FirstOrDefault();
if (tag != null)
{
//trim "
version = tag.Tag.Trim(new char[] { '"' });
}
}
if(version == null)
{
throw new InvalidOperationException("Cannot update value without __version.");
}
//remove systemproperties
JObject insertItem = item.Remove(prop => prop.Name.StartsWith("__"));
string paramString = TimestampSynchronizer.GetQueryString(parameters);
Uri updateUri = new Uri(string.Format("{0}/{1}{2}",
tableUri.OriginalString,
Uri.EscapeDataString(item["id"].ToString()),
paramString != null ? "?" + paramString : string.Empty));
HttpRequestMessage req = http.CreateRequest(new HttpMethod("PATCH"), updateUri, new Dictionary<string, string>() { { "If-Match", string.Format("\"{0}\"", version) } });
req.Content = new StringContent(insertItem.ToString(Formatting.None), Encoding.UTF8, "application/json");
try
{
JObject response = await http.GetJsonAsync(req);
JArray results = ResponseHelper.GetResultsJArrayFromJson(response);
IEnumerable<string> deleted = ResponseHelper.GetDeletedJArrayFromJson(response);
string tableName = UriHelper.GetTableNameFromUri(tableUri);
using (await this.storage.Open())
{
await this.storage.StoreData(tableName, results);
await this.storage.RemoveStoredData(tableName, deleted);
}
return response;
}
catch(HttpStatusCodeException e)
{
if(e.StatusCode == HttpStatusCode.Conflict)
{
Conflict c = JsonConvert.DeserializeObject<Conflict>(e.Message);
if(c != null)
{
this.OnConflict(c);
return ResponseHelper.CreateSyncResponseWithItems(c.CurrentItem, null);
}
}
return ResponseHelper.CreateSyncResponseWithItems(null, null);
}
}
public async Task<JObject> UploadDelete(JObject item, Uri tableUri, IHttp http, IDictionary<string, string> parameters = null)
{
string paramString = TimestampSynchronizer.GetQueryString(parameters);
Uri deleteUri = new Uri(string.Format("{0}/{1}?version={2}{3}",
tableUri.OriginalString,
Uri.EscapeDataString(item["id"].ToString()),
Uri.EscapeDataString(item["__version"].ToString()),
paramString != null ? "&" + paramString : string.Empty));
HttpRequestMessage req = http.CreateRequest(HttpMethod.Delete, deleteUri);
try
{
JObject response = await http.GetJsonAsync(req);
JArray results = ResponseHelper.GetResultsJArrayFromJson(response);
IEnumerable<string> deleted = ResponseHelper.GetDeletedJArrayFromJson(response);
string tableName = UriHelper.GetTableNameFromUri(tableUri);
using (await this.storage.Open())
{
await this.storage.StoreData(tableName, results);
await this.storage.RemoveStoredData(tableName, deleted);
}
return response;
}
catch (HttpStatusCodeException e)
{
if (e.StatusCode == HttpStatusCode.Conflict)
{
Conflict c = JsonConvert.DeserializeObject<Conflict>(e.Message);
if (c != null)
{
this.OnConflict(c);
return ResponseHelper.CreateSyncResponseWithItems(null, c.CurrentItem["id"]);
}
}
return ResponseHelper.CreateSyncResponseWithItems(null, null);
}
}
public async Task<JObject> UploadInsert(JObject item, Uri tableUri, IHttp http, IDictionary<string, string> parameters = null)
{
//remove systemproperties
JObject insertItem = item.Remove(prop => prop.Name.StartsWith("__"));
string paramString = TimestampSynchronizer.GetQueryString(parameters);
Uri insertUri = new Uri(string.Format("{0}{1}",
tableUri.OriginalString,
paramString != null ? "?" + paramString : string.Empty));
HttpRequestMessage req = http.CreateRequest(HttpMethod.Post, insertUri);
req.Content = new StringContent(insertItem.ToString(Formatting.None), Encoding.UTF8, "application/json");
JObject response = await http.GetJsonAsync(req);
JArray results = ResponseHelper.GetResultsJArrayFromJson(response);
IEnumerable<string> deleted = ResponseHelper.GetDeletedJArrayFromJson(response);
string tableName = UriHelper.GetTableNameFromUri(tableUri);
using (await this.storage.Open())
{
await this.storage.StoreData(tableName, results);
await this.storage.RemoveStoredData(tableName, deleted);
}
return response;
}
