ILogSource ILogAggregator.PrepareAggregation(string outputLogSourceName, ILogSource[] sources, ILogConstraints filterTemplate)
{
ILogSource outputSource = CreateUninitializedAggregation(outputLogSourceName, sources, filterTemplate);
m_currentSource = outputSource as LogSourceAggregation;
return(outputSource);
}
/// <summary>
/// agregates one or more sources -> creates a new (uninitialized) aggregation
///
/// NOTE:
/// we also 'aggregate' only 1 source to gain the advantage offered by this algoritm
/// of being able to pump entry-s to ui thread in chucks instead of sending all source
/// in one shoot -> more responsive ui
/// </summary>
/// <param name="outputLogSourceName"></param>
/// <param name="sources"></param>
/// <param name="constraints">null if no filter</param>
/// <returns></returns>
private ILogSource CreateUninitializedAggregation(string outputLogSourceName, ILogSource[] sources, ILogConstraints filterTemplate)
{
// zero sources - nothing we can do
if ((sources == null) || (sources.Length == 0))
{
return(null);
}
ILogSource newAggregation = null;
try
{
// not in cache, so build it, add it to cache (if caching ok) and return it
newAggregation = new LogSourceAggregation(this, outputLogSourceName, sources, filterTemplate);
return(newAggregation);
}
finally
{
Raise_AggregationProgress("LogViewerSR.AggregationProgress_BeginInitialize",
cProgressLogCreated,
null);
}
}
