[linuxtools-dev] TMF : createExecutableExtension in instantiateTrace() o

[Chen RanHow <ranhow.chen@xxxxxxxxx>]

Hi TMF advances

Thank you team for the powerful framework, I have a question bellow

In  TmfTraceElement.java

I saw createExecutableExtension() in instantiateTrace() to get an instance from the extension points like bellow

                IConfigurationElement ce = sfTraceTypeAttributes.get(fTraceTypeId);

               

                .......

                ITmfTrace trace = (ITmfTrace) ce.createExecutableExtension(TmfTraceType.TRACE_TYPE_ATTR);

               ......

               return trace;

 

I wonder why not just use TmfTraceType.getInstance() to do it ?

Since the init() in TmfTraceType constructor call populateCategoriesAndTraceTypes()

The instance of createExecutableExtension is created

Could it be replaced with

            TraceTypeHelper tth = TmfTraceType.getInstance().getTraceType(fTraceTypeId);

            ITmfTrace trace = tth.getTrace();

            return trace;

Or I misunderstand it ?

Please kindly to reply

Ran-How