Fix issue : alert gains and tot tables not found

[ftouchte]

I noticed this error for a very long time, but it is only now that I notice that (may be) the calibration constants for the gain and the ToT were never taken into account.

INFO: [ConstantsManager] --->  loading table for run = 22712
INFO: [DB] ---> open 22712 | rge_spring2024 | Fri Feb 27 08:18:12 EST 2026 | mysql://clas12reader@clasdb-farm.jlab.org/clas12
INFO: ***** >>> add table = /calibration/alert/atof/attenuation
INFO: ***** >>> add table = /calibration/alert/ahdc/time_offsets
INFO: ***** >>> add table = /calibration/alert/ahdc/time_to_distance
INFO: ***** >>> add table = /calibration/alert/atof/time_offsets
INFO: ***** >>> add table = /calibration/alert/ahdc/raw_hit_cuts
INFO: ***** >>> add table = /calibration/alert/atof/time_walk
INFO: ***** >>> add table = /calibration/alert/atof/effective_velocity
SEVERE: [getConstants] error ( run = 22712 )  table not found with name : /calibration/alert/ahdc/gains</b>
SEVERE: [getConstants] error ( run = 22712 )  table not found with name : /calibration/alert/ahdc/time_over_threshold

Before this PR

After this PR

This way of handling the code masked the issue :

coatjava/reconstruction/alert/src/main/java/org/jlab/rec/ahdc/Hit/HitReader.java

Lines 158 to 165 in 1ccf10a

	double adcCal = adcRaw;
	if (!sim) {
	double[] gainArr = CalibrationConstantsLoader.AHDC_ADC_GAINS.get(key_value);
	if (gainArr != null && gainArr.length > 0) {
	double gainCorr = gainArr[0];
	adcCal = adcRaw * gainCorr;
	}
	}

Fortunately, the ADC calibration has no effect on the Kalman Filter.

In any case, the error disappears with the pull request.

[baltzell]

Are they still being read from the database in AHDC's engine? If so, can that be disabled?

[ftouchte]

We still need the CCDB in the AHDCEngine. That why the AHDCTest failed. But if we run the ATOFEngine just before the AHDCEngine, we don't need to load it again.

(I will just revoke my last commit.)