public void Execute(AnalysisExecutionContext context)
{
_context = context;
if (context.Results.Count <= 0)
{
context.OnExecutionProgress("Bitext", new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Canceled, 0, 0, 0));
return;
}
int processed = 0;
int failed = 0;
foreach (KeyValuePair <string, ResultSet> document in context.Results)
{
if (document.Value.Source.Length > 8192)
{
failed++;
document.Value.AddOutput("Bitext", 0, "failed");
AnalysisExecutionProgressEventArgs ea = new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Failed, context.Results.Count, processed, failed);
context.OnExecutionProgress("Bitext", ea);
if (ea.Cancel)
{
break;
}
continue;
}
Dictionary <string, string> parameters = new Dictionary <string, string>();
parameters.Add("User", context.Key);
parameters.Add("Pass", context.Secret);
parameters.Add("OutFormat", context.Format.ToString());
parameters.Add("Detail", "Global");
parameters.Add("Normalized", "No");
parameters.Add("Theme", "Gen");
parameters.Add("ID", document.Key);
parameters.Add("Lang", LocaleHelper.GetTripleLanguageAbbreviation(context.Language));
parameters.Add("Text", HttpUtility.UrlEncode(document.Value.Source));
byte[] data = Encoding.UTF8.GetBytes(FormatParameters(parameters));
WebRequest request = WebRequest.Create("http://svc9.bitext.com/WS_NOps_Val/Service.aspx");
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
request.ContentLength = data.Length;
using (Stream writer = request.GetRequestStream())
{
writer.Write(data, 0, data.Length);
writer.Flush();
}
try
{
HttpWebResponse response = null;
if (context.UseDebugMode)
{
TimeSpan time = TimeSpan.Zero;
response = BenchmarkHelper.Invoke(new InvokeBenchmarkHandler(delegate(object state)
{
return(request.GetResponse());
}), null, out time) as HttpWebResponse;
Console.WriteLine("Bitext: Sentiment for the document {0} has been retreived. Execution time is: {1}", document.Key, time.TotalMilliseconds);
}
else
{
response = request.GetResponse() as HttpWebResponse;
}
if (response.StatusCode != HttpStatusCode.Accepted && response.StatusCode != HttpStatusCode.OK)
{
failed++;
document.Value.AddOutput("Bitext", 0, "failed");
AnalysisExecutionProgressEventArgs ea = new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Processed, context.Results.Count, processed, failed);
context.OnExecutionProgress("Bitext", ea);
response.Close();
if (ea.Cancel)
{
break;
}
}
else
{
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
string result = reader.ReadToEnd();
result = result.Replace("\r\n", string.Empty)
.Replace("\r", string.Empty)
.Replace("\n", string.Empty)
.Replace(">\"", ">")
.Replace("\"<", "<")
.Replace("&", "&");
Regex regex = new Regex(@"(?<=\bencoding="")[^""]*");
Match match = regex.Match(result);
Encoding encoding = null;
if (match.Success)
{
encoding = Encoding.GetEncoding(match.Value);
}
else
{
encoding = Encoding.UTF8;
}
BitextSentiment sentiment = null;
using (Stream stream = new MemoryStream(encoding.GetBytes(result)))
{
XmlSerializer serializer = new XmlSerializer(typeof(BitextSentiment));
sentiment = (BitextSentiment)serializer.Deserialize(stream);
}
processed++;
double score = MergeSentimentScore(sentiment);
string polarity = GetSentimentPolarity(score);
document.Value.AddOutput("Bitext", score, polarity);
AnalysisExecutionProgressEventArgs ea = new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Processed, context.Results.Count, processed, failed);
context.OnExecutionProgress("Bitext", ea);
if (ea.Cancel)
{
break;
}
}
}
}
catch (Exception ex)
{
failed++;
document.Value.AddOutput("Bitext", 0, "failed");
AnalysisExecutionProgressEventArgs ea = new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Failed, context.Results.Count, processed, failed);
ea.Reason = ex.Message;
context.OnExecutionProgress("Bitext", ea);
if (ea.Cancel)
{
break;
}
}
}
context.OnExecutionProgress("Bitext", new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Success, context.Results.Count, processed, failed));
}