async public Task <ResolverResponse> Resolve(object server, object local)
{
const string keepLocal = "Keep your changes";
const string keepServer = "Keep their changes";
const string cancel = "Cancel";
string answer = null;
ResolverResponse result = new ResolverResponse();
answer = await DisplayActionSheet("Someone else has updated this same record so you will have to decide which changes you want to keep.\n\nYour Changes:\n" + local + "\n\nTheir Changes:\n" + server, cancel, null, keepLocal, keepServer);
if (answer == keepLocal)
{
result = ResolverResponse.LocalVersion;
}
else if (answer == keepServer)
{
result = ResolverResponse.ServerVersion;
}
else
{
result = ResolverResponse.Cancel;
}
return(result);
}
public ResolverResponse Post([FromBody] int[,] value)
{
var logs = new List <string>();
var resolver = new SudokuResolver(value, m => logs.Add(m));
var result = resolver.Resolve();
var response = new ResolverResponse
{
Matrix = value,
Logs = logs,
Resolved = result,
RangeItems = resolver.RangeItems
};
return(response);
}
/// <summary>
/// Sync conflict resolution logic
/// </summary>
/// <param name="operation"></param>
/// <returns></returns>
/// <remarks>
/// Gets called by SDK when it detects a synchronization conflict during sync operations.
/// If there are multiple conflicts during a sync operation then this method will be called
/// once for each conflict.
/// </remarks>
public virtual async Task <JObject> ExecuteTableOperationAsync(IMobileServiceTableOperation operation)
{
MobileServicePreconditionFailedException error;
do
{
error = null;
try
{
return(await operation.ExecuteAsync());
}
catch (MobileServicePreconditionFailedException ex)
{
error = ex;
}
if (error != null)
{
var serverValue = error.Value;
ResolverResponse resolution = await ConflictResolver(serverValue, operation.Item);
if (resolution == ResolverResponse.LocalVersion)
{
// Overwrite the server version and try the operation again by continuing the loop
operation.Item[MobileServiceSystemColumns.Version] = serverValue[MobileServiceSystemColumns.Version];
continue;
}
else if (resolution == ResolverResponse.ServerVersion)
{
return((JObject)serverValue);
}
else
{
operation.AbortPush();
}
}
} while (error != null);
return(null);
}
