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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Analytics\ReportXml;
use Magento\Framework\App\ResourceConnection;
use Magento\Framework\DB\Select;
use Magento\Framework\ObjectManagerInterface;
/**
* Hydrator for report select parts
*/
class SelectHydrator
{
/**
* Array of supported Select parts
*
* @var array
*/
private $predefinedSelectParts =
[
Select::DISTINCT,
Select::COLUMNS,
Select::UNION,
Select::FROM,
Select::WHERE,
Select::GROUP,
Select::HAVING,
Select::ORDER,
Select::LIMIT_COUNT,
Select::LIMIT_OFFSET,
Select::FOR_UPDATE
];
/**
* @var array
*/
private $selectParts;
/**
* @var ResourceConnection
*/
private $resourceConnection;
/**
* @var ObjectManagerInterface
*/
private $objectManager;
/**
* @param ResourceConnection $resourceConnection
* @param ObjectManagerInterface $objectManager
* @param array $selectParts
*/
public function __construct(
ResourceConnection $resourceConnection,
ObjectManagerInterface $objectManager,
$selectParts = []
) {
$this->resourceConnection = $resourceConnection;
$this->objectManager = $objectManager;
$this->selectParts = $selectParts;
}
/**
* @return array
*/
private function getSelectParts()
{
return array_merge($this->predefinedSelectParts, $this->selectParts);
}
/**
* Extracts Select metadata parts
*
* @param Select $select
* @return array
* @throws \Zend_Db_Select_Exception
*/
public function extract(Select $select)
{
$parts = [];
foreach ($this->getSelectParts() as $partName) {
$parts[$partName] = $select->getPart($partName);
}
return $parts;
}
/**
* @param array $selectParts
* @return Select
*/
public function recreate(array $selectParts)
{
$select = $this->resourceConnection->getConnection()->select();
$select = $this->processColumns($select, $selectParts);
foreach ($selectParts as $partName => $partValue) {
$select->setPart($partName, $partValue);
}
return $select;
}
/**
* Process COLUMNS part values and add this part into select.
*
* If each column contains information about select expression
* an object with the type of this expression going to be created and assigned to this column.
*
* @param Select $select
* @param array $selectParts
* @return Select
*/
private function processColumns(Select $select, array &$selectParts)
{
if (!empty($selectParts[Select::COLUMNS]) && is_array($selectParts[Select::COLUMNS])) {
$part = [];
foreach ($selectParts[Select::COLUMNS] as $columnEntry) {
list($correlationName, $column, $alias) = $columnEntry;
if (is_array($column) && !empty($column['class'])) {
$expression = $this->objectManager->create(
$column['class'],
isset($column['arguments']) ? $column['arguments'] : []
);
$part[] = [$correlationName, $expression, $alias];
} else {
$part[] = $columnEntry;
}
}
$select->setPart(Select::COLUMNS, $part);
unset($selectParts[Select::COLUMNS]);
}
return $select;
}
}