Check result of dynamic_cast before dereferencing.

Marcin Piotr Wandas authored 4 years ago and Frank Winklmeier committed 4 years ago

[ATLASRECTS-5396][ATLASRECTS-5380] Move initReader method from execute to initialize method in MvaTESEvaluator

Previously, we use TRTBDT to help calculate the BDT score. Since TRTBDT
is not thread safe, it is replaced with BDTHelper now. In addtion, an
obsolete property, i.e. isGrad, is removed.

Change the return type of getGradBoostMVA from StatusCode to float. If
there is any problem when calculating the score, -999 will be returned.

Xiaozhong Huang authored 5 years ago and Frank Winklmeier committed 5 years ago

To calculate the BDT score, we need to provide a list of input
variables. Previously, the input variables are declared as memeber
variables, which make the class stateful. These member variables
are now replaced with local variables.

Add a new class, i.e. BDTHelper, to help calculate the BDT score.
This class is similar with TRTBDT in HelperFunction. In the future,
we will remove TRTBDT.