Doctrine \ DBAL \ Exception \ UniqueConstraintViolationException尝试插入实体

Question

如果该实体存在（我可以使用），我会尝试更新此功能，如果该实体不存在，请尝试插入该功能

private function updateDatabaseAnswer($client, $survey, $answer, $question){
            $storage = $this->di->find('storage');
            $query = "select sa.id "
                            ."from survey_answers as sa "
                            ."join survey_database_answers as sda "
                            ."on sa.id = sda.id "
                            ."join answers as a "
                            ."on a.id = sda.id_answer "
                            ."where id_client= ".$client->getId()." "
                            ."and id_question = ".$question->getId()." "
                            ."and id_survey = ".$survey->getId();

            $result = $storage->executeSQL($query);
            $updated_answer = new SurveyDatabaseAnswer();
            if(!empty($result))
                $updated_answer->setId($result[0]);

            $updated_answer->setClient($client);
            $updated_answer->setSurvey($survey);
            $updated_answer->setAnswer($answer);
            empty($result)?$storage->persist($updated_answer):$storage->merge($updated_answer);
            $storage->flush();
        }

如果实体没有退出，我会收到此消息

Type: Doctrine\DBAL\Exception\UniqueConstraintViolationException

Message: An exception occurred while executing 'INSERT INTO survey_database_answers (id, id_answer) VALUES (?, ?)' with params [7438573, 1533]: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '7438573' for key 'PRIMARY'

尝试插入一个已经存在的ID