private void CallbackProcessStatus(IAsyncResult ar)
{
// Retrieve the delegate.
ProcessState result = (ProcessState)ar.AsyncState;
OrderChangelogAsync caller = result.Request;
ChangelogIdentificationType returnResult = caller.EndInvoke(ar);
result.Result = returnResult;
result.Completed = true;
}
private ChangelogIdentificationType OrderChangelogAsyncCaller(ChangelogOrderType order)
{
int id = -1;
int.TryParse(order.datasetId, out id);
IChangelogProvider changelogprovider;
OrderChangelog resp;
int startindex = -1;
int count = -1;
string initType;
var datasets = from d in db.Datasets where d.DatasetId == id select d;
initType = datasets.First().DatasetProvider;
//Initiate provider from config/dataset
Type providerType = Assembly.GetExecutingAssembly().GetType(initType);
changelogprovider = Activator.CreateInstance(providerType) as IChangelogProvider;
changelogprovider.Intitalize(id);
int.TryParse(order.startIndex, out startindex);
int.TryParse(order.count, out count);
if (startindex == -1)
{
throw new Exception("MissingParameterValue : startindex");
}
if (count == -1)
{
throw new Exception("MissingParameterValue : count");
}
if (datasets.First().ServerMaxCount.HasValue&& (datasets.First().ServerMaxCount < count || count == 0))
{
count = (int)datasets.First().ServerMaxCount;
}
resp = changelogprovider.CreateChangelog(startindex, count, "", id);
// Create the delegate.
OrderChangelogAsync caller = OrderChangeLogAsync;
ProcessState state = new ProcessState(resp.changelogId);
state.Request = caller;
caller.BeginInvoke(changelogprovider, startindex, count, "", id,
CallbackProcessStatus, state);
ChangelogIdentificationType res = new ChangelogIdentificationType();
res.changelogId = resp.changelogId;
return(res);
}
