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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Search\Request;
use Exception;
use InvalidArgumentException;
use Magento\Framework\Exception\StateException;
use Magento\Framework\ObjectManagerInterface;
use Magento\Framework\Phrase;
use Magento\Framework\Search\Request\Aggregation\DynamicBucket;
use Magento\Framework\Search\Request\Aggregation\Metric;
use Magento\Framework\Search\Request\Aggregation\RangeBucket;
use Magento\Framework\Search\Request\Aggregation\TermBucket;
use Magento\Framework\Search\Request\Filter\Range;
use Magento\Framework\Search\Request\Filter\Term;
use Magento\Framework\Search\Request\Filter\Wildcard;
use Magento\Framework\Search\Request\Query\BoolExpression;
use Magento\Framework\Search\Request\Query\Filter;
use Magento\Framework\Search\Request\Query\MatchQuery;
/**
* @SuppressWarnings(PHPMD.CouplingBetweenObjects)
* @api
* @since 100.0.2
*/
class Mapper
{
/**
* @var QueryInterface
*/
private $rootQuery;
/**
* @var array
*/
private $queries;
/**
* @var array
*/
private $filters;
/**
* @var string[]
*/
private $mappedQueries;
/**
* @var string[]
*/
private $mappedFilters;
/**
* @var array
*/
private $aggregations;
/**
* @var ObjectManagerInterface
*/
private $objectManager;
/**
* @var string
*/
private $rootQueryName;
/**
* @param ObjectManagerInterface $objectManager
* @param array $queries
* @param string $rootQueryName
* @param array $aggregations
* @param array $filters
* @throws Exception
* @throws InvalidArgumentException
* @throws StateException
*/
public function __construct(
ObjectManagerInterface $objectManager,
array $queries,
$rootQueryName,
array $aggregations = [],
array $filters = []
) {
$this->objectManager = $objectManager;
$this->queries = $queries;
$this->aggregations = $aggregations;
$this->filters = $filters;
$this->rootQueryName = $rootQueryName;
}
/**
* Get Query Interface by name
*
* @return QueryInterface
* @throws Exception
* @throws InvalidArgumentException
* @throws StateException
*/
public function getRootQuery()
{
if (!$this->rootQuery) {
$this->mappedQueries = [];
$this->mappedFilters = [];
$this->rootQuery = $this->mapQuery($this->rootQueryName);
$this->validate();
}
return $this->rootQuery;
}
/**
* Convert array to Query instance
*
* @param string $queryName
* @return QueryInterface
* @throws Exception
* @throws InvalidArgumentException
* @throws StateException
* @SuppressWarnings(PHPMD.CyclomaticComplexity)
*/
private function mapQuery($queryName)
{
if (!isset($this->queries[$queryName])) {
// phpcs:ignore Magento2.Exceptions.DirectThrow
throw new Exception('Query ' . $queryName . ' does not exist');
} elseif (in_array($queryName, $this->mappedQueries)) {
throw new StateException(new Phrase(
'A cycle was found. The "%1" query is already used in the request hierarchy.',
[$queryName]
));
}
$this->mappedQueries[] = $queryName;
$query = $this->queries[$queryName];
switch ($query['type']) {
case QueryInterface::TYPE_MATCH:
$query = $this->objectManager->create(
MatchQuery::class,
[
'name' => $query['name'],
'value' => $query['value'],
'boost' => $query['boost'] ?? 1,
'matches' => $query['match']
]
);
break;
case QueryInterface::TYPE_FILTER:
if (isset($query['queryReference'][0])) {
$reference = $this->mapQuery($query['queryReference'][0]['ref']);
$referenceType = Filter::REFERENCE_QUERY;
} elseif (isset($query['filterReference'][0])) {
$reference = $this->mapFilter($query['filterReference'][0]['ref']);
$referenceType = Filter::REFERENCE_FILTER;
} else {
// phpcs:ignore Magento2.Exceptions.DirectThrow
throw new Exception('Reference is not provided');
}
$query = $this->objectManager->create(
Filter::class,
[
'name' => $query['name'],
'boost' => $query['boost'] ?? 1,
'reference' => $reference,
'referenceType' => $referenceType
]
);
break;
case QueryInterface::TYPE_BOOL:
$aggregatedByType = $this->aggregateQueriesByType($query['queryReference']);
$query = $this->objectManager->create(
BoolExpression::class,
array_merge(
['name' => $query['name'], 'boost' => $query['boost'] ?? 1],
$aggregatedByType
)
);
break;
default:
throw new InvalidArgumentException('Invalid query type');
}
return $query;
}
/**
* Convert array to Filter instance
*
* @param string $filterName
* @throws Exception
* @return FilterInterface
* @throws Exception
* @throws InvalidArgumentException
* @throws StateException
*/
private function mapFilter($filterName)
{
if (!isset($this->filters[$filterName])) {
// phpcs:ignore Magento2.Exceptions.DirectThrow
throw new Exception('Filter ' . $filterName . ' does not exist');
} elseif (in_array($filterName, $this->mappedFilters)) {
throw new StateException(
new Phrase(
'A cycle was found. The "%1" filter is already used in the request hierarchy.',
[$filterName]
)
);
}
$this->mappedFilters[] = $filterName;
$filter = $this->filters[$filterName];
switch ($filter['type']) {
case FilterInterface::TYPE_TERM:
$filter = $this->objectManager->create(
Term::class,
[
'name' => $filter['name'],
'field' => $filter['field'],
'value' => $filter['value']
]
);
break;
case FilterInterface::TYPE_RANGE:
$filter = $this->objectManager->create(
Range::class,
[
'name' => $filter['name'],
'field' => $filter['field'],
'from' => $filter['from'] ?? null,
'to' => $filter['to'] ?? null
]
);
break;
case FilterInterface::TYPE_WILDCARD:
$filter = $this->objectManager->create(
Wildcard::class,
[
'name' => $filter['name'],
'field' => $filter['field'],
'value' => $filter['value']
]
);
break;
case FilterInterface::TYPE_BOOL:
$aggregatedByType = $this->aggregateFiltersByType($filter['filterReference']);
$filter = $this->objectManager->create(
\Magento\Framework\Search\Request\Filter\BoolExpression::class,
array_merge(
['name' => $filter['name']],
$aggregatedByType
)
);
break;
default:
throw new InvalidArgumentException('Invalid filter type');
}
return $filter;
}
/**
* Aggregate Filters by clause
*
* @param array $data
* @return array
* @throws StateException
*/
private function aggregateFiltersByType($data)
{
$list = [];
foreach ($data as $value) {
$list[$value['clause']][$value['ref']] = $this->mapFilter($value['ref']);
}
return $list;
}
/**
* Aggregate Queries by clause
*
* @param array $data
* @return array
* @throws StateException
*/
private function aggregateQueriesByType($data)
{
$list = [];
foreach ($data as $value) {
$list[$value['clause']][$value['ref']] = $this->mapQuery($value['ref']);
}
return $list;
}
/**
* Validate queries and filters.
*
* @return void
* @throws StateException
*/
private function validate()
{
$this->validateQueries();
$this->validateFilters();
}
/**
* Check if queries are not used.
*
* @return void
* @throws StateException
*/
private function validateQueries()
{
$this->validateNotUsed(
$this->queries,
$this->mappedQueries,
'Query %1 is not used in request hierarchy'
);
}
/**
* Validate elements that are not used.
*
* @param array $elements
* @param string[] $mappedElements
* @param string $errorMessage
* @return void
* @throws StateException
*/
private function validateNotUsed($elements, $mappedElements, $errorMessage)
{
$allElements = array_keys($elements);
$notUsedElements = implode(', ', array_diff($allElements, $mappedElements));
if (!empty($notUsedElements)) {
throw new StateException(new Phrase($errorMessage, [$notUsedElements]));
}
}
/**
* Check if filters are not used.
*
* @return void
* @throws StateException
*/
private function validateFilters()
{
$this->validateNotUsed(
$this->filters,
$this->mappedFilters,
'Filter %1 is not used in request hierarchy'
);
}
/**
* Build BucketInterface[] from array
*
* @return array
* @throws StateException
*/
public function getBuckets()
{
$buckets = [];
foreach ($this->aggregations as $bucketData) {
$arguments = [
'name' => $bucketData['name'],
'field' => $bucketData['field'],
'metrics' => $this->mapMetrics($bucketData),
];
switch ($bucketData['type']) {
case BucketInterface::TYPE_TERM:
$arguments['parameters'] = array_column($bucketData['parameter'] ?? [], 'value', 'name');
$bucket = $this->objectManager->create(TermBucket::class, $arguments);
break;
case BucketInterface::TYPE_RANGE:
$arguments['ranges'] = $this->mapRanges($bucketData);
$bucket = $this->objectManager->create(RangeBucket::class, $arguments);
break;
case BucketInterface::TYPE_DYNAMIC:
$arguments['method'] = $bucketData['method'];
$bucket = $this->objectManager->create(DynamicBucket::class, $arguments);
break;
default:
throw new StateException(new Phrase('The bucket type is invalid. Verify and try again.'));
}
$buckets[] = $bucket;
}
return $buckets;
}
/**
* Build Metric[] from array
*
* @param array $bucketData
* @return array
*/
private function mapMetrics(array $bucketData)
{
$metricObjects = [];
if (isset($bucketData['metric'])) {
$metrics = $bucketData['metric'];
foreach ($metrics as $metric) {
$metricObjects[] = $this->objectManager->create(
Metric::class,
[
'type' => $metric['type']
]
);
}
}
return $metricObjects;
}
/**
* Build Range[] from array
*
* @param array $bucketData
* @return array
*/
private function mapRanges(array $bucketData)
{
$rangeObjects = [];
if (isset($bucketData['range'])) {
$ranges = $bucketData['range'];
foreach ($ranges as $range) {
$rangeObjects[] = $this->objectManager->create(
Aggregation\Range::class,
[
'from' => $range['from'],
'to' => $range['to']
]
);
}
}
return $rangeObjects;
}
}