private void TryUpdateValue()
{
if (!IsValid || string.IsNullOrEmpty(Descriptor.Path))
{
return;
}
var cell = MarkupFactory.FindElementByDescriptor((IHtmlDocument)Document, Descriptor);
if (cell == null)
{
Value = null;
return;
}
if (Descriptor.ValueFormat == null)
{
Value = cell.InnerText;
return;
}
object value;
if (Descriptor.ValueFormat.TryConvert(cell.InnerText, out value))
{
Value = value.ToString();
}
else
{
Value = cell.InnerText;
}
}
protected override void OnDocumentChanged()
{
var cell = MarkupFactory.FindElementByDescriptor((IHtmlDocument)Document, Descriptor);
MarkupBehavior.PathToSelectedElement = cell != null?cell.GetPath().ToString() : null;
}
private void TryFetch()
{
if (myDocumentBrowser == null)
{
return;
}
myData.Clear();
var descriptors = mySelectedSource.Figures
.Cast <IPathDescriptor>()
.Where(f => f.Figure == myFigureType.Name);
foreach (var descriptor in descriptors)
{
try
{
ILocatorMacroResolver resolver = new StockMacroResolver(Stock);
if (CustomResolverCreator != null)
{
resolver = CustomResolverCreator(resolver);
}
myDocumentBrowser.Navigate(DocumentType.Html, mySelectedSource.Location, resolver);
var htmlDocument = ( IHtmlDocument )myDocumentBrowser.Document;
// Mark the part of the document described by the FigureDescriptor to have a preview
var cell = ( HtmlElementAdapter )MarkupFactory.FindElementByDescriptor(htmlDocument, descriptor);
if (cell != null)
{
cell.Element.ScrollIntoView(false);
}
var marker = MarkupFactory.CreateMarker(descriptor);
marker.Mark(cell);
// already extract data here to check for format issues etc
var parser = DocumentProcessingFactory.CreateParser(htmlDocument, descriptor);
var table = parser.ExtractTable();
var converter = DocumentProcessingFactory.CreateConverter(descriptor, mySelectedSource, CurrenciesLut.Currencies);
var series = converter.Convert(table, Stock);
myData.AddRange(series);
// we found s.th. with this format
// -> skip alternative formats
break;
}
catch (Exception ex)
{
ex.Data["Figure"] = myFigureType.Name;
ex.Data["DataSource.Vendor"] = mySelectedSource.Vendor;
ex.Data["DataSource.Name"] = mySelectedSource.Name;
ex.Data["Location"] = mySelectedSource.Location.ToString();
ex.Data["FigureDescriptor"] = descriptor.GetType().FullName;
if (ThrowOnError)
{
throw new Exception("Failed to extract data from datasource", ex);
}
else
{
myLogger.Error(ex, "Failed to fetch '{0}' from site {1}", myFigureType.Name, mySelectedSource.Name);
}
}
}
}
