/// <summary>
/// Call a Convertigo Server backend service and return data as an XML Document.
/// CallXML will asynchrously call a "requestable" (Sequence, transaction or FullSync database) and return a
/// C8oPromise object.
/// </summary>
/// <param name="requestable">
/// A "requestable" object of this form :
/// <list type ="bullet">
/// <item>project.sequence to call a Sequence in the convertigo server. If project is not specified explicitly here,
/// (.sequence) the default project specified in the enpoint will be used.</item>
/// <item>
/// project.connector.transaction to call a transaction in the convertigo server. if project is not specified explicitly here,
/// (.connector.transaction) the default project specified in the enpoint will be used. If
/// connector is not specified (..transaction) the default connector will be used.</item>
/// <item>fs://database.fullsync_verb to call the local NoSQL database for quering, updating and syncing according to the full_sync
/// verb used. See FullSync documentation for a list of verbs and parameters.</item>
/// </list>
/// </param>
/// <param name="parameters">
/// A IDictionary of Key/Value pairs mapped on Sequence/transaction/fullsync variables.
/// </param>
/// <returns>
/// A C8oPromise object on which you can chain other requests to get the data with the Then(), ThenUI() methods or
/// use the Async() to wait for the server response without blocking the request thread. You can also use the .Fail() and
/// FailUI() methods to handle errors.
/// </returns>
public C8oPromise <XDocument> CallXml(string requestable, IDictionary <string, object> parameters)
{
var promise = new C8oPromise <XDocument>(this);
Call(requestable, parameters, new C8oResponseXmlListener((response, requestParameters) =>
{
if (response == null && requestParameters.ContainsKey(ENGINE_PARAMETER_PROGRESS))
{
promise.OnProgress(requestParameters[ENGINE_PARAMETER_PROGRESS] as C8oProgress);
}
else
{
promise.OnResponse(response, requestParameters);
}
}), new C8oExceptionListener((exception, requestParameters) =>
{
promise.OnFailure(exception, requestParameters);
}));
return(promise);
}
private void OnResponse()
{
try
{
if (!c8oResponse.Equals(default(KeyValuePair <C8oOnResponse <T>, bool>)))
{
var promise = new C8oPromise <T> [1];
if (c8oResponse.Value)
{
Exception failure = null;
lock (promise)
{
c8o.RunUI(() =>
{
lock (promise)
{
try
{
promise[0] = c8oResponse.Key.Invoke(lastResponse, lastParameters);
}
catch (Exception e)
{
failure = e;
}
Monitor.Pulse(promise);
}
});
Monitor.Wait(promise);
if (failure != null)
{
throw failure;
}
}
}
else
{
promise[0] = c8oResponse.Key.Invoke(lastResponse, lastParameters);
}
if (promise[0] != null)
{
if (nextPromise != null)
{
var lastPromise = promise[0];
while (lastPromise.nextPromise != null)
{
lastPromise = lastPromise.nextPromise;
}
lastPromise.nextPromise = nextPromise;
}
nextPromise = promise[0];
}
else if (nextPromise != null)
{
nextPromise.OnResponse(lastResponse, lastParameters);
}
}
else if (nextPromise != null)
{
nextPromise.OnResponse(lastResponse, lastParameters);
}
else
{
// Response received and no handler.
}
}
catch (Exception exception)
{
OnFailure(exception, lastParameters);
}
}