[Plato] NPE after step Transform Measured Values

[kraxner]

Maybe: If transformation is completed for a criterion, and the user goes back to Identify Requirements and changes the restriction of the ordinal scale, in way that already entered results are not covered by transformation, then it is possible to proceed after step Transform Measured Values, and a NPE occurs.

In OrdinalTransformer:

public boolean isTransformable(List<ValidationError> errors) {
    boolean result = true;
    for (String key: mapping.keySet()) {
        TargetValueObject value = mapping.get(key);

That is: we iterate over the keys of the defined mappings and check if they have defined target values.
What is missing:

• Check also if there is a mapping defined for each measured value!

And more:

• Check in Evaluate Experiments if already existing measurement values conform to ordinal restrictions!

[kraxner]

Hard to reproduce... don't get past evaluation without a value