public void Execute(AnalysisExecutionContext context)
{
_context = context;
if (context.Results.Count <= 0)
{
context.OnExecutionProgress("Alchemy", new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Canceled, 0, 0, 0));
return;
}
AlchemyAPI.AlchemyAPI session = new AlchemyAPI.AlchemyAPI();
session.SetAPIKey(context.Key);
AlchemyAPI_TargetedSentimentParams parameters = new AlchemyAPI_TargetedSentimentParams();
parameters.setOutputMode(AlchemyAPI_BaseParams.OutputMode.XML);
int processed = 0;
int failed = 0;
foreach (KeyValuePair<string, ResultSet> document in context.Results)
{
try
{
string strResult = string.Empty;
if (context.UseDebugMode)
{
TimeSpan time = TimeSpan.Zero;
strResult = BenchmarkHelper.Invoke(new InvokeBenchmarkHandler(delegate(object state)
{
return session.TextGetTextSentiment(document.Value.Source, parameters);
}), null, out time) as string;
Console.WriteLine("\tAlchemyAPI: Sentiment for the document {0} has been retreived. Execution time is: {1}", document.Key, time.TotalMilliseconds);
}
else
strResult = session.TextGetTextSentiment(document.Value.Source, parameters);
using (MemoryStream stream = new MemoryStream(Encoding.UTF8.GetBytes(strResult)))
{
XmlSerializer serializer = new XmlSerializer(typeof(AlchemySentimentResult));
AlchemySentimentResult result = (AlchemySentimentResult)serializer.Deserialize(stream);
processed++;
document.Value.AddOutput("Alchemy", result.SentimentDetails.Score, result.SentimentDetails.Type);
AnalysisExecutionProgressEventArgs ea = new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Processed, context.Results.Count, processed, failed);
context.OnExecutionProgress("Alchemy", ea);
if (ea.Cancel)
break;
}
}
catch (Exception ex)
{
failed++;
document.Value.AddOutput("Alchemy", 0, "failed");
AnalysisExecutionProgressEventArgs ea = new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Failed, context.Results.Count, processed, failed);
ea.Reason = ex.Message;
context.OnExecutionProgress("Alchemy", ea);
if (ea.Cancel)
break;
}
}
context.OnExecutionProgress("Alchemy", new AnalysisExecutionProgressEventArgs(AnalysisExecutionStatus.Success, context.Results.Count, processed, failed));
}
