How to use

getFirstRole

method

in

pt.ist.fenixframework.dml.DomainRelation

public boolean isFirstRole() {
  return relation.getFirstRole() == this;
}

public Role getOtherRole() {
  return (isFirstRole() ? relation.getSecondRole() : relation.getFirstRole());
}

private static boolean is1toNRelation(DomainRelation domRelation) {
  int multiplicity1 = domRelation.getFirstRole().getMultiplicityUpper();
  int multiplicity2 = domRelation.getSecondRole().getMultiplicityUpper();
  return ((multiplicity1 == 1) && (multiplicity2 != 1)) || ((multiplicity1 != 1) && (multiplicity2 == 1));
}

if (is1toNRelation(relation)) {
    ClassDescriptor clazz = getOtherRoleClassDescriptor(relation.getFirstRole());
    SQLTableChangeSet change = changes.get(clazz.getFullTableName());
    change.addIndex(relation.getFirstRole());