vendor/codeages/biz-order-pay/src/Pay/Dao/Impl/CashflowDaoImpl.php

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<?php

namespace Codeages\Biz\Pay\Dao\Impl;

use Codeages\Biz\Framework\Dao\DaoException;
use Codeages\Biz\Pay\Dao\CashflowDao;
use Codeages\Biz\Framework\Dao\GeneralDaoImpl;

class CashflowDaoImpl extends GeneralDaoImpl implements CashflowDao
{
    protected $table = 'biz_pay_cashflow';

    public function findByTradeSn($sn)
    {
        return $this->findByFields(array('trade_sn' => $sn));
    }

    /**
     * @param $column
     * @param $conditions
     * @return bool|string
     * @throws DaoException
     */
    public function sumColumnByConditions($column, $conditions)
    {
        if (!$this->isSumColumnAllow($column)) {
            throw new DaoException('column is not allowed');
        }
        $builder = $this->createQueryBuilder($conditions)
            ->select("sum({$column})");
        return $builder->execute()->fetchColumn(0);
    }

    public function countUsersByConditions($conditions)
    {
        $builder = $this->createQueryBuilder($conditions)
            ->select("count(distinct user_id)");
        return $builder->execute()->fetchColumn(0);
    }

    public function sumAmountGroupByUserId($conditions)
    {
        $builder = $this->createQueryBuilder($conditions)
            ->select("sum(amount) as amount, user_id")
            ->groupBy('user_id');

        return $builder->execute()->fetchAll();
    }

    private function sumColumnWhiteList()
    {
        return array('amount');
    }

    protected function isSumColumnAllow($column)
    {
        $whiteList = $this->sumColumnWhiteList();

        if (in_array($column, $whiteList)) {
            return true;