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sclass HCRUD_Concepts extends HCRUD_Data {
  Concepts cc = db_mainConcepts();
  Class<? extends Concept> cClass;
  
  *(Class<? extends Concept> *cClass) {}
  
  S itemName() { ret shortName(cClass); }
  
  //LS fields() { ret conceptFields(cClass); }
  
  L<Map<S, O>> list() { ret (L) conceptsToMaps_gen_withNullValues(main list(cc, cClass)); }
  
  Map<S, O> emptyObject() {
    Concept c = unlisted(cClass);
    print("fieldOrder", getFieldOrder(c));
    ret printStruct("emptyObject", itemToMap(c));
  }
  
  Map<S, O> itemToMap(Concept c) {
    ret c == null ? null : putKeysFirst(getFieldOrder(c), conceptToMap_gen_withNullValues(c));
  }
  
  Map<S, O> getObject(O id) {
    ret itemToMap(getConcept(cc, cClass, toLong(id)));
  }
  
  O createObject(SS map) {
    Concept c = cnew(cc, cClass);
    cSmartSet(c, mapToParams(map));
    ret c.id;
  }
  
  S updateObject(O id, SS map) {
    Concept c = getConcept(cc, cClass, toLong(id));
    if (c == null) ret "Object " + id + " not found";
    cSmartSet(c, mapToParams(map));
    ret "Object " + id + " updated";
  }
  
  S deleteObject(O id) {
    Concept c = getConcept(cc, cClass, toLong(id));
    if (c == null) ret "Object not found";
    deleteConcept(c);
    ret "Object deleted";
  }
}