//allows derived classes to override the default streaming
//and save method
protected virtual bool StreamAndSaveCalculation()
{
bool bHasCalculations = false;
//both calculators and analyzers use observationpath for initial file
if (!CalculatorHelpers.URIAbsoluteExists(
this.GCCalculatorParams.ExtensionDocToCalcURI,
this.GCCalculatorParams.AnalyzerParms.ObservationsPath))
{
this.GCCalculatorParams.AnalyzerParms.ObservationsPath
= this.GCCalculatorParams.ExtensionDocToCalcURI.URIDataManager.TempDocPath;
}
if (!CalculatorHelpers.URIAbsoluteExists(
this.GCCalculatorParams.ExtensionDocToCalcURI,
this.GCCalculatorParams.AnalyzerParms.ObservationsPath))
{
return(bHasCalculations);
}
//when writing to file, close it with the using
StringWriter output = new StringWriter();
this.GCCalculatorParams.DocToCalcReader
= DevTreks.Data.Helpers.FileStorageIO.GetXmlReader(
this.GCCalculatorParams.ExtensionDocToCalcURI.URIDataManager.InitialDocToCalcURI,
this.GCCalculatorParams.AnalyzerParms.ObservationsPath);
if (this.GCCalculatorParams.DocToCalcReader != null)
{
using (this.GCCalculatorParams.DocToCalcReader)
{
//new temporary path to store calculator results
//string sNewDocToCalcTempDocPath = CalculatorHelpers.GetFileToCalculate(this.GCCalculatorParams);
//descendant nodes are also processed using streaming techniques
//note that XStreamingElements were tested but had faults
IEnumerable <XElement> root =
from startingElement in StreamRoot()
select startingElement;
XmlWriterSettings writerSettings = new XmlWriterSettings();
writerSettings.OmitXmlDeclaration = true;
writerSettings.Indent = true;
using (XmlWriter writer = XmlWriter.Create(
output, writerSettings))
{
foreach (XElement el in root)
{
//stop processing if any error message is found
if (this.GCCalculatorParams.ErrorMessage == string.Empty)
{
el.WriteTo(writer);
}
else
{
break;
}
}
}
}
}
using (output)
{
if (this.GCCalculatorParams.ErrorMessage == string.Empty &&
this.GCArguments.HasCalculations)
{
//move the new calculations to tempDocToCalcPath
//this returns an error msg
this.GCCalculatorParams.ErrorMessage = CalculatorHelpers.MoveURIs(
this.GCCalculatorParams.ExtensionDocToCalcURI, output,
this.GCCalculatorParams.ExtensionDocToCalcURI.URIDataManager.TempDocPath);
bHasCalculations = true;
}
}
return(bHasCalculations);
}