Description Zoltan Ujhelyi 2018-07-23 11:05:41 EDT

When the symmetric attribute is set for a constraint, the resulting generated constraint class is with a compile error. E.g., the following pattern

@Constraint(key = {hi1, hi2}, message = "Duplicate identifier $hi1.identifier$", severity = "error", symmetric = {hi1, hi2})
pattern nonUniqueInstanceIdentifiers(hi1 : HostInstance, hi2: HostInstance) {
    HostInstance.identifier(hi1, name);
    HostInstance.identifier(hi2, name);
}

generates the following key names method

    @Override
    public Set<List<String>> getSymmetricKeyNames() {
        Set<List<String>> symmetricKeyNamesSet = new HashSet<>(
            Arrays.asList(
            "hi1",
            "hi2"
            )
        );
        return symmetricKeyNamesSet;
    }
    
 This results in a compile error, as the HashSet constructor returns a set of strings instead a set of string lists.