public function getDealerContactInfos($criteria = null, ConnectionInterface $con = null)
    {
        $partial = $this->collDealerContactInfosPartial && !$this->isNew();
        if (null === $this->collDealerContactInfos || null !== $criteria  || $partial) {
            if ($this->isNew() && null === $this->collDealerContactInfos) {
                // return empty collection
                $this->initDealerContactInfos();
            } else {
                $collDealerContactInfos = ChildDealerContactInfoQuery::create(null, $criteria)
                    ->filterByDealerContact($this)
                    ->find($con);

                if (null !== $criteria) {
                    if (false !== $this->collDealerContactInfosPartial && count($collDealerContactInfos)) {
                        $this->initDealerContactInfos(false);

                        foreach ($collDealerContactInfos as $obj) {
                            if (false == $this->collDealerContactInfos->contains($obj)) {
                                $this->collDealerContactInfos->append($obj);
                            }
                        }

                        $this->collDealerContactInfosPartial = true;
                    }

                    reset($collDealerContactInfos);

                    return $collDealerContactInfos;
                }

                if ($partial && $this->collDealerContactInfos) {
                    foreach ($this->collDealerContactInfos as $obj) {
                        if ($obj->isNew()) {
                            $collDealerContactInfos[] = $obj;
                        }
                    }
                }

                $this->collDealerContactInfos = $collDealerContactInfos;
                $this->collDealerContactInfosPartial = false;
            }
        }

        return $this->collDealerContactInfos;
    }