This is part of the code from a service class in a Spring Boot project, can you tell me if there are totally 4 jdbc connections being used in parallel ?
```
@Service
public class TransactionServiceImpl implements TransactionService {
	@Autowired
	TransactionMapper transactionMapper;
	@Override
	public NAME_1 getTransactionIdListByFreeTextSearch(Map params) {
		NAME_1 idListPart1 = transactionMapper.getTransactionIdListByFreeTextSearchPart1(params);
		NAME_1 idListPart2 = transactionMapper.getTransactionIdListByFreeTextSearchPart2(params);
		NAME_1 idListPart3 = transactionMapper.getTransactionIdListByFreeTextSearchPart3(params);
		NAME_1 idListPart4 = transactionMapper.getTransactionIdListByFreeTextSearchPart4(params);
		....
	}
}
```