//private TextProcessor()
//{
//}
//public static TextProcessor Instance
//{
// get
// {
// if (instance == null)
// {
// instance = new TextProcessor();
// }
// return instance;
// }
//}
public async Task <ProcessingResult> Predict(string textToPredict)
{
textToPredict = textToPredict.Trim();
textToPredict = textToPredict.ToLower();
MobileServiceInvalidOperationException exception = null;
try
{
// This code refreshes the entries in the list view by querying the IntentItems table.
// The query excludes completed IntentItems.
items = await intentTable
.Where(IntentItem => IntentItem.Utterance == (textToPredict))
.ToCollectionAsync();
telemetryItems = await telemetryTable.Take(1)
.ToCollectionAsync();
if (items.Count > 0)
{
var item = items[0];
var processingResult = new ProcessingResult();
processingResult.Entities = JsonConvert.DeserializeObject <Dictionary <string, string> >(item.JsonEntities);
processingResult.Intent = item.Intent;
processingResult.IsFromCache = true;
await Track(TelemetryEvents.CACHE_HIT, textToPredict);
await Track(TelemetryEvents.LUIS_INTENT, processingResult.Intent);
return(processingResult);
}
}
catch (MobileServiceInvalidOperationException e)
{
exception = e;
Debug.WriteLine(e);
throw e;
}
await Track(TelemetryEvents.CACHE_MISS, textToPredict);
try
{
LuisResult res = await _client.Predict(textToPredict);
var intent = processRes(res);
var temp = new ProcessingResult();
temp.Confidence = intent.Confidence;
temp.Entities = intent.Entities;
temp.Intent = intent.Intent;
temp.IsFromCache = true;
var intentItem = new IntentItem();
intentItem.Intent = temp.Intent;
intentItem.Utterance = textToPredict;
intentItem.IsProcessed = true;
intentItem.JsonEntities = JsonConvert.SerializeObject(temp.Entities);
// Insert into database
await InsertIntentItem(intentItem);
await Track(TelemetryEvents.LUIS_INTENT, intentItem.Intent);
return(intent);
}
catch (MobileServicePushFailedException push)
{
//
Debug.WriteLine(push);
throw push;
}
// TODO: Refactor to have a better error handling
catch (System.Exception e)
{
// Check App ID, Luis Key , Luis URL
// Trace error
Debug.WriteLine(e.Message);
Debug.WriteLine(e);
}
// Save offline
var offlineIntent = new IntentItem();
offlineIntent.Utterance = textToPredict;
offlineIntent.IsProcessed = false;
await InsertIntentItem(offlineIntent);
return(null);
}
public IMobileServiceTableQuery <T> Take(int count)
{
return(_syncTable.Take(count));
}
