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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Catalog\Ui\DataProvider\Product;
use Magento\Framework\DB\Select;
/**
* Collection which is used for rendering product list in the backend.
*
* Used for product grid and customizes behavior of the default Product collection for grid needs.
*/
class ProductCollection extends \Magento\Catalog\Model\ResourceModel\Product\Collection
{
/**
* Disables using of price index for grid rendering
*
* Admin area shouldn't use price index and should rely on actual product data instead.
*
* @codeCoverageIgnore
* @return \Magento\Catalog\Model\ResourceModel\Product\Collection
*/
protected function _productLimitationJoinPrice()
{
$this->_productLimitationFilters->setUsePriceIndex(false);
return $this->_productLimitationPrice(true);
}
/**
* @inheritdoc
*/
public function getSize()
{
if ($this->_totalRecords === null) {
if ($this->_scopeConfig->getValue('admin/grid/limit_total_number_of_products')) {
$sql = $this->getSelectCountSql();
$estimatedRowsCount = $this->analyzeRows($sql);
$recordsLimit = $this->_scopeConfig->getValue('admin/grid/records_limit');
if ($estimatedRowsCount > $recordsLimit) {
$columns = $sql->getPart(Select::COLUMNS);
$sql->reset(Select::COLUMNS);
foreach ($columns as &$column) {
if ($column[1] instanceof \Zend_Db_Expr && $column[1] == "COUNT(DISTINCT e.entity_id)") {
$column[1] = new \Zend_Db_Expr('e.entity_id');
}
}
$sql->setPart(Select::COLUMNS, $columns);
$sql->limit($recordsLimit);
$query = new \Zend_Db_Expr('SELECT COUNT(*) FROM (' . $sql->assemble() . ') AS c');
$this->_totalRecords = (int)$this->getConnection()->query($query)->fetchColumn();
} else {
return parent::getSize();
}
return $this->_totalRecords;
}
return parent::getSize();
}
return $this->_totalRecords;
}
/**
* Analyze number of rows to be examined to execute the query.
*
* @param Select $sql
* @return mixed
* @throws \Zend_Db_Statement_Exception
*/
private function analyzeRows(Select $sql)
{
$results = $this->getConnection()->query('EXPLAIN ' . $sql)->fetchAll();
return max(array_column($results, 'rows'));
}
}