/// <summary>
/// Cleans up the instance of ResourceStaticAnalysis. Used to flush all referenced objects to make sure memory doesn't grow indefinitely.
/// </summary>
public override void Cleanup()
{
StringCache.Clear();
StringCache.Resize(0);
if (EngineCleanup != null)
{
Trace.TraceInformation("Firing EngineCleanup event.");
EngineCleanup(this, new EventArgs());
}
else
{
Trace.TraceWarning("No listeners of EngineCleanup event. Event not fired.");
}
}
/// <summary>
/// This is the second thread of ResourceStaticAnalysis. It communicates with
/// Classification Object and Space factories in order to load objects from
/// data packages.
/// It also does all the required pre-processing on objects, such as marking objects
/// for processing.
/// It then starts Enigne3rdThread in order to start Classification Object processing by rules
/// </summary>
/// <exception cref="ResourceStaticAnalysisEngineInitializationException">Thrown when:
/// <para/>expected data source provider is not available
/// <para/>or where there is no primary data source
/// <para/>or when data source instance could not be initialized properly. This could happen - for example - if a file comprising the datasource does not exist.
/// <para/>Inner exception is of type <see cref="ResourceStaticAnalysisException"/> and contains more details about the specific cause of failure.
/// </exception>
private void LoadAndQueueCOs()
{
Trace.TraceInformation("Loading and queueing objects started.");
if (LoadingStarting != null)
{
LoadingStarting(this, null);
}
/* this loads all CO objects of type specified in dsPkg and from data sources
* specified in dsPkg into an appropriate space supporting that type of CO.
* if the space does not already exist in coSpaces it will be created.
* otherwise COs will be added to the existing space.
*
* Consider re-designing this part to be multi-thread so packages
* are loaded in separate threads to speed up
*/
_coLoaded = 0;
if (_dataSourcePackages != null && _dataSourcePackages.Count > 0)
{
Trace.TraceInformation("Engine is processing packages...");
while (_dataSourcePackages.Count > 0)
{
DataSourcePackage dataSourcePackage;
lock ((_dataSourcePackages as ICollection).SyncRoot)
{
dataSourcePackage = _dataSourcePackages.Dequeue();
}
if (dataSourcePackage != null)
{
try
{
Trace.TraceInformation("Engine is processing package: {0}", dataSourcePackage.ToString());
dataSourcePackage.Initialize(this._dataSourceProviders);
var loadedObjects = LoadClassificationObjects(dataSourcePackage, this.CurrentRuleManager.RuleCount);
if (loadedObjects.Count < 1)
{
continue;
}
PrepareResourceItems(loadedObjects);
}
catch (Exception e)
{
throw new ResourceStaticAnalysisEngineInitializationException(String.Format(CultureInfo.CurrentCulture, "Error processing DataSourcePackage: {0}.",
dataSourcePackage.ToString()), e);
}
}
}
}
else if (_usePreLoadedCOs)
{
Trace.TraceInformation("Engine is processing objects...");
List <ClassificationObject> loadedObjects = ParsedCOList;
if (loadedObjects != null && loadedObjects.Count > 0)
{
PrepareResourceItems(loadedObjects);
}
}
_preProcessedInput.TrimExcess();
// now that we know the number of objects to process, set the string cache capacity to limit the
// number of cache resizes during execution
StringCache.Resize(_preProcessedInput.Count * 5);
if (_engineConfiguration.DataSourcePkgs != null)
{
//All DataSourcePackages have been loaded, we can dispose of the packages and underlying
//data sources
_engineConfiguration.DataSourcePkgs.ForEach(dsp =>
{
if (!Object.ReferenceEquals(dsp, null))
{
dsp.Dispose();
}
});
}
if (LoadingFinished != null)
{
LoadingFinished(this, new EventArgs <int>(_preProcessedInput.Count));
}
Trace.TraceInformation("Loading and queueing objects finished. (took {1}). Objects loaded: {0}.", _coLoaded, Monitor.LoadingElapsed);
}