PaginationExtension::getResult()

Test Failed

Branch — master (ec8ced)

by Kévin

created 2018-01-31 20:16 UTC

↳ Parent: PaginationExtension

Size

Total Lines	13
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	13
c	0
b	0
f	0
eloc	6
nc	4
nop	4

<?php

/*
 * This file is part of the API Platform project.
 *
 * (c) Kévin Dunglas <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

declare(strict_types=1);

namespace ApiPlatform\Core\Bridge\Doctrine\Orm\Extension;

use ApiPlatform\Core\Bridge\Doctrine\Orm\AbstractPaginator;
use ApiPlatform\Core\Bridge\Doctrine\Orm\Paginator;
use ApiPlatform\Core\Bridge\Doctrine\Orm\Util\QueryChecker;
use ApiPlatform\Core\Bridge\Doctrine\Orm\Util\QueryNameGeneratorInterface;
use ApiPlatform\Core\Exception\InvalidArgumentException;
use ApiPlatform\Core\Metadata\Resource\Factory\ResourceMetadataFactoryInterface;
use ApiPlatform\Core\Metadata\Resource\ResourceMetadata;
use Doctrine\Common\Persistence\ManagerRegistry;
use Doctrine\ORM\QueryBuilder;
use Doctrine\ORM\Tools\Pagination\Paginator as DoctrineOrmPaginator;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;

/**
 * Applies pagination on the Doctrine query for resource collection when enabled.
 *
 * @author Kévin Dunglas <[email protected]>
 * @author Samuel ROZE <[email protected]>
 */
final class PaginationExtension implements ContextAwareQueryResultCollectionExtensionInterface
{
    private $managerRegistry;
    private $requestStack;
    private $resourceMetadataFactory;
    private $enabled;
    private $clientEnabled;
    private $clientItemsPerPage;
    private $itemsPerPage;
    private $pageParameterName;
    private $enabledParameterName;
    private $itemsPerPageParameterName;
    private $maximumItemPerPage;
    private $partial;
    private $clientPartial;
    private $partialParameterName;

    public function __construct(ManagerRegistry $managerRegistry, RequestStack $requestStack, ResourceMetadataFactoryInterface $resourceMetadataFactory, bool $enabled = true, bool $clientEnabled = false, bool $clientItemsPerPage = false, int $itemsPerPage = 30, string $pageParameterName = 'page', string $enabledParameterName = 'pagination', string $itemsPerPageParameterName = 'itemsPerPage', int $maximumItemPerPage = null, bool $partial = false, bool $clientPartial = false, string $partialParameterName = 'partial')
    {
        $this->managerRegistry = $managerRegistry;
        $this->requestStack = $requestStack;
        $this->resourceMetadataFactory = $resourceMetadataFactory;
        $this->enabled = $enabled;
        $this->clientEnabled = $clientEnabled;
        $this->clientItemsPerPage = $clientItemsPerPage;
        $this->itemsPerPage = $itemsPerPage;
        $this->pageParameterName = $pageParameterName;
        $this->enabledParameterName = $enabledParameterName;
        $this->itemsPerPageParameterName = $itemsPerPageParameterName;
        $this->maximumItemPerPage = $maximumItemPerPage;
        $this->partial = $partial;
        $this->clientPartial = $clientPartial;
        $this->partialParameterName = $partialParameterName;
    }

    /**
     * {@inheritdoc}
     */
    public function applyToCollection(QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass = null, string $operationName = null, array $context = [])
    {
        if (null === $resourceClass) {
            throw new InvalidArgumentException('The "$resourceClass" parameter must not be null');
        }

        $request = $this->requestStack->getCurrentRequest();
        if (null === $request) {
            return;
        }

        $resourceMetadata = $this->resourceMetadataFactory->create($resourceClass);
        if (!$this->isPaginationEnabled($request, $resourceMetadata, $operationName)) {
            return;
        }

        $itemsPerPage = $resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_items_per_page', $this->itemsPerPage, true);
        if ($request->attributes->get('_graphql')) {
            $collectionArgs = $request->attributes->get('_graphql_collections_args', []);
            $itemsPerPage = $collectionArgs[$resourceClass]['first'] ?? $itemsPerPage;
        }

        if ($resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_client_items_per_page', $this->clientItemsPerPage, true)) {
            $maxItemsPerPage = $resourceMetadata->getCollectionOperationAttribute($operationName, 'maximum_items_per_page', $this->maximumItemPerPage, true);

            $itemsPerPage = (int) $this->getPaginationParameter($request, $this->itemsPerPageParameterName, $itemsPerPage);
            $itemsPerPage = (null !== $maxItemsPerPage && $itemsPerPage >= $maxItemsPerPage ? $maxItemsPerPage : $itemsPerPage);
        }

        if (0 > $itemsPerPage) {
            throw new InvalidArgumentException('Item per page parameter should not be less than 0');
        }

        $page = $this->getPaginationParameter($request, $this->pageParameterName, 1);

        if (0 === $itemsPerPage && 1 < $page) {
            throw new InvalidArgumentException('Page should not be greater than 1 if itemsPegPage is equal to 0');
        }

        $firstResult = ($page - 1) * $itemsPerPage;
        if ($request->attributes->get('_graphql')) {
            $collectionArgs = $request->attributes->get('_graphql_collections_args', []);
            if (isset($collectionArgs[$resourceClass]['after'])) {
                $after = \base64_decode($collectionArgs[$resourceClass]['after'], true);
                $firstResult = (int) $after;
                $firstResult = false === $after ? $firstResult : ++$firstResult;

            }
        }

        $queryBuilder
            ->setFirstResult($firstResult)
            ->setMaxResults($itemsPerPage);
    }

    /**
     * {@inheritdoc}
     */
    public function supportsResult(string $resourceClass, string $operationName = null, array $context = []): bool
    {
        $request = $this->requestStack->getCurrentRequest();
        if (null === $request) {
            return false;
        }

        $resourceMetadata = $this->resourceMetadataFactory->create($resourceClass);

        return $this->isPaginationEnabled($request, $resourceMetadata, $operationName);
    }

    /**
     * {@inheritdoc}
     */
    public function getResult(QueryBuilder $queryBuilder, string $resourceClass = null, string $operationName = null, array $context = [])
    {
        $doctrineOrmPaginator = new DoctrineOrmPaginator($queryBuilder, $this->useFetchJoinCollection($queryBuilder));
        $doctrineOrmPaginator->setUseOutputWalkers($this->useOutputWalkers($queryBuilder));

        $resourceMetadata = null === $resourceClass ? null : $this->resourceMetadataFactory->create($resourceClass);

        if ($this->isPartialPaginationEnabled($this->requestStack->getCurrentRequest(), $resourceMetadata, $operationName)) {
            return new class($doctrineOrmPaginator) extends AbstractPaginator {
            };
        }

        return new Paginator($doctrineOrmPaginator);
    }

    private function isPartialPaginationEnabled(Request $request = null, ResourceMetadata $resourceMetadata = null, string $operationName = null): bool
    {
        $enabled = $this->partial;
        $clientEnabled = $this->clientPartial;

        if ($resourceMetadata) {
            $enabled = $resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_partial', $enabled, true);

            if ($request) {
                $clientEnabled = $resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_client_partial', $clientEnabled, true);
            }
        }

        if ($clientEnabled && $request) {
            $enabled = filter_var($this->getPaginationParameter($request, $this->partialParameterName, $enabled), FILTER_VALIDATE_BOOLEAN);
        }

        return $enabled;
    }

    private function isPaginationEnabled(Request $request, ResourceMetadata $resourceMetadata, string $operationName = null): bool
    {
        $enabled = $resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_enabled', $this->enabled, true);
        $clientEnabled = $resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_client_enabled', $this->clientEnabled, true);

        if ($clientEnabled) {
            $enabled = filter_var($this->getPaginationParameter($request, $this->enabledParameterName, $enabled), FILTER_VALIDATE_BOOLEAN);
        }

        return $enabled;
    }

    /**
     * Determines whether the Paginator should fetch join collections, if the root entity uses composite identifiers it should not.
     *
     * @see https://github.com/doctrine/doctrine2/issues/2910
     *
     * @param QueryBuilder $queryBuilder
     *
     * @return bool
     */
    private function useFetchJoinCollection(QueryBuilder $queryBuilder): bool
    {
        return !QueryChecker::hasRootEntityWithCompositeIdentifier($queryBuilder, $this->managerRegistry);
    }

    /**
     * Determines whether output walkers should be used.
     *
     * @param QueryBuilder $queryBuilder
     *
     * @return bool
     */
    private function useOutputWalkers(QueryBuilder $queryBuilder): bool
    {
        /*
         * "Cannot count query that uses a HAVING clause. Use the output walkers for pagination"
         *
         * @see https://github.com/doctrine/doctrine2/blob/900b55d16afdcdeb5100d435a7166d3a425b9873/lib/Doctrine/ORM/Tools/Pagination/CountWalker.php#L50
         */
        if (QueryChecker::hasHavingClause($queryBuilder)) {
            return true;
        }

        /*
         * "Paginating an entity with foreign key as identifier only works when using the Output Walkers. Call Paginator#setUseOutputWalkers(true) before iterating the paginator."
         *
         * @see https://github.com/doctrine/doctrine2/blob/900b55d16afdcdeb5100d435a7166d3a425b9873/lib/Doctrine/ORM/Tools/Pagination/LimitSubqueryWalker.php#L87
         */
        if (QueryChecker::hasRootEntityWithForeignKeyIdentifier($queryBuilder, $this->managerRegistry)) {
            return true;
        }

        /*
         * "Cannot select distinct identifiers from query with LIMIT and ORDER BY on a column from a fetch joined to-many association. Use output walkers."
         *
         * @see https://github.com/doctrine/doctrine2/blob/900b55d16afdcdeb5100d435a7166d3a425b9873/lib/Doctrine/ORM/Tools/Pagination/LimitSubqueryWalker.php#L149
         */
        if (
            QueryChecker::hasMaxResults($queryBuilder) &&
            QueryChecker::hasOrderByOnToManyJoin($queryBuilder, $this->managerRegistry)
        ) {
            return true;
        }

        /*
         * When using composite identifiers pagination will need Output walkers
         */
        if (QueryChecker::hasRootEntityWithCompositeIdentifier($queryBuilder, $this->managerRegistry)) {
            return true;
        }

        // Disable output walkers by default (performance)
        return false;
    }

    private function getPaginationParameter(Request $request, string $parameterName, $default = null)
    {
        if (null !== $paginationAttribute = $request->attributes->get('_api_pagination')) {
            return array_key_exists($parameterName, $paginationAttribute) ? $paginationAttribute[$parameterName] : $default;
        }

        return $request->query->get($parameterName, $default);
    }
}


1			<?php
2
3			/*
4			* This file is part of the API Platform project.
5			*
6			* (c) Kévin Dunglas <[email protected]>
7			*
8			* For the full copyright and license information, please view the LICENSE
9			* file that was distributed with this source code.
10			*/
11
12			declare(strict_types=1);
13
14			namespace ApiPlatform\Core\Bridge\Doctrine\Orm\Extension;
15
16			use ApiPlatform\Core\Bridge\Doctrine\Orm\AbstractPaginator;
17			use ApiPlatform\Core\Bridge\Doctrine\Orm\Paginator;
18			use ApiPlatform\Core\Bridge\Doctrine\Orm\Util\QueryChecker;
19			use ApiPlatform\Core\Bridge\Doctrine\Orm\Util\QueryNameGeneratorInterface;
20			use ApiPlatform\Core\Exception\InvalidArgumentException;
21			use ApiPlatform\Core\Metadata\Resource\Factory\ResourceMetadataFactoryInterface;
22			use ApiPlatform\Core\Metadata\Resource\ResourceMetadata;
23			use Doctrine\Common\Persistence\ManagerRegistry;
24			use Doctrine\ORM\QueryBuilder;
25			use Doctrine\ORM\Tools\Pagination\Paginator as DoctrineOrmPaginator;
26			use Symfony\Component\HttpFoundation\Request;
27			use Symfony\Component\HttpFoundation\RequestStack;
28
29			/**
30			* Applies pagination on the Doctrine query for resource collection when enabled.
31			*
32			* @author Kévin Dunglas <[email protected]>
33			* @author Samuel ROZE <[email protected]>
34			*/
35			final class PaginationExtension implements ContextAwareQueryResultCollectionExtensionInterface
36			{
37			private $managerRegistry;
38			private $requestStack;
39			private $resourceMetadataFactory;
40			private $enabled;
41			private $clientEnabled;
42			private $clientItemsPerPage;
43			private $itemsPerPage;
44			private $pageParameterName;
45			private $enabledParameterName;
46			private $itemsPerPageParameterName;
47			private $maximumItemPerPage;
48			private $partial;
49			private $clientPartial;
50			private $partialParameterName;
51
52			public function __construct(ManagerRegistry $managerRegistry, RequestStack $requestStack, ResourceMetadataFactoryInterface $resourceMetadataFactory, bool $enabled = true, bool $clientEnabled = false, bool $clientItemsPerPage = false, int $itemsPerPage = 30, string $pageParameterName = 'page', string $enabledParameterName = 'pagination', string $itemsPerPageParameterName = 'itemsPerPage', int $maximumItemPerPage = null, bool $partial = false, bool $clientPartial = false, string $partialParameterName = 'partial')
53			{
54			$this->managerRegistry = $managerRegistry;
55			$this->requestStack = $requestStack;
56			$this->resourceMetadataFactory = $resourceMetadataFactory;
57			$this->enabled = $enabled;
58			$this->clientEnabled = $clientEnabled;
59			$this->clientItemsPerPage = $clientItemsPerPage;
60			$this->itemsPerPage = $itemsPerPage;
61			$this->pageParameterName = $pageParameterName;
62			$this->enabledParameterName = $enabledParameterName;
63			$this->itemsPerPageParameterName = $itemsPerPageParameterName;
64			$this->maximumItemPerPage = $maximumItemPerPage;
65			$this->partial = $partial;
66			$this->clientPartial = $clientPartial;
67			$this->partialParameterName = $partialParameterName;
68			}
69
70			/**
71			* {@inheritdoc}
72			*/
73			public function applyToCollection(QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass = null, string $operationName = null, array $context = [])
74			{
75			if (null === $resourceClass) {
76			throw new InvalidArgumentException('The "$resourceClass" parameter must not be null');
77			}
78
79			$request = $this->requestStack->getCurrentRequest();
80			if (null === $request) {
81			return;
82			}
83
84			$resourceMetadata = $this->resourceMetadataFactory->create($resourceClass);
85			if (!$this->isPaginationEnabled($request, $resourceMetadata, $operationName)) {
86			return;
87			}
88
89			$itemsPerPage = $resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_items_per_page', $this->itemsPerPage, true);
90			if ($request->attributes->get('_graphql')) {
91			$collectionArgs = $request->attributes->get('_graphql_collections_args', []);
92			$itemsPerPage = $collectionArgs[$resourceClass]['first'] ?? $itemsPerPage;
93			}
94
95			if ($resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_client_items_per_page', $this->clientItemsPerPage, true)) {
96			$maxItemsPerPage = $resourceMetadata->getCollectionOperationAttribute($operationName, 'maximum_items_per_page', $this->maximumItemPerPage, true);
97
98			$itemsPerPage = (int) $this->getPaginationParameter($request, $this->itemsPerPageParameterName, $itemsPerPage);
99			$itemsPerPage = (null !== $maxItemsPerPage && $itemsPerPage >= $maxItemsPerPage ? $maxItemsPerPage : $itemsPerPage);
100			}
101
102			if (0 > $itemsPerPage) {
103			throw new InvalidArgumentException('Item per page parameter should not be less than 0');
104			}
105
106			$page = $this->getPaginationParameter($request, $this->pageParameterName, 1);
107
108			if (0 === $itemsPerPage && 1 < $page) {
109			throw new InvalidArgumentException('Page should not be greater than 1 if itemsPegPage is equal to 0');
110			}
111
112			$firstResult = ($page - 1) * $itemsPerPage;
113			if ($request->attributes->get('_graphql')) {
114			$collectionArgs = $request->attributes->get('_graphql_collections_args', []);
115			if (isset($collectionArgs[$resourceClass]['after'])) {
116			$after = \base64_decode($collectionArgs[$resourceClass]['after'], true);
117			$firstResult = (int) $after;
118			$firstResult = false === $after ? $firstResult : ++$firstResult;
			0 ignored issues – show introduced 2018-01-31 20:27 UTC by Report Bug Copy Issue Report The condition `false === $after` can never be `true`. Loading history...
119			}
120			}
121
122			$queryBuilder
123			->setFirstResult($firstResult)
124			->setMaxResults($itemsPerPage);
125			}
126
127			/**
128			* {@inheritdoc}
129			*/
130			public function supportsResult(string $resourceClass, string $operationName = null, array $context = []): bool
131			{
132			$request = $this->requestStack->getCurrentRequest();
133			if (null === $request) {
134			return false;
135			}
136
137			$resourceMetadata = $this->resourceMetadataFactory->create($resourceClass);
138
139			return $this->isPaginationEnabled($request, $resourceMetadata, $operationName);
140			}
141
142			/**
143			* {@inheritdoc}
144			*/
145			public function getResult(QueryBuilder $queryBuilder, string $resourceClass = null, string $operationName = null, array $context = [])
146			{
147			$doctrineOrmPaginator = new DoctrineOrmPaginator($queryBuilder, $this->useFetchJoinCollection($queryBuilder));
148			$doctrineOrmPaginator->setUseOutputWalkers($this->useOutputWalkers($queryBuilder));
149
150			$resourceMetadata = null === $resourceClass ? null : $this->resourceMetadataFactory->create($resourceClass);
151
152			if ($this->isPartialPaginationEnabled($this->requestStack->getCurrentRequest(), $resourceMetadata, $operationName)) {
153			return new class($doctrineOrmPaginator) extends AbstractPaginator {
154			};
155			}
156
157			return new Paginator($doctrineOrmPaginator);
158			}
159
160			private function isPartialPaginationEnabled(Request $request = null, ResourceMetadata $resourceMetadata = null, string $operationName = null): bool
161			{
162			$enabled = $this->partial;
163			$clientEnabled = $this->clientPartial;
164
165			if ($resourceMetadata) {
166			$enabled = $resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_partial', $enabled, true);
167
168			if ($request) {
169			$clientEnabled = $resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_client_partial', $clientEnabled, true);
170			}
171			}
172
173			if ($clientEnabled && $request) {
174			$enabled = filter_var($this->getPaginationParameter($request, $this->partialParameterName, $enabled), FILTER_VALIDATE_BOOLEAN);
175			}
176
177			return $enabled;
178			}
179
180			private function isPaginationEnabled(Request $request, ResourceMetadata $resourceMetadata, string $operationName = null): bool
181			{
182			$enabled = $resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_enabled', $this->enabled, true);
183			$clientEnabled = $resourceMetadata->getCollectionOperationAttribute($operationName, 'pagination_client_enabled', $this->clientEnabled, true);
184
185			if ($clientEnabled) {
186			$enabled = filter_var($this->getPaginationParameter($request, $this->enabledParameterName, $enabled), FILTER_VALIDATE_BOOLEAN);
187			}
188
189			return $enabled;
190			}
191
192			/**
193			* Determines whether the Paginator should fetch join collections, if the root entity uses composite identifiers it should not.
194			*
195			* @see https://github.com/doctrine/doctrine2/issues/2910
196			*
197			* @param QueryBuilder $queryBuilder
198			*
199			* @return bool
200			*/
201			private function useFetchJoinCollection(QueryBuilder $queryBuilder): bool
202			{
203			return !QueryChecker::hasRootEntityWithCompositeIdentifier($queryBuilder, $this->managerRegistry);
204			}
205
206			/**
207			* Determines whether output walkers should be used.
208			*
209			* @param QueryBuilder $queryBuilder
210			*
211			* @return bool
212			*/
213			private function useOutputWalkers(QueryBuilder $queryBuilder): bool
214			{
215			/*
216			* "Cannot count query that uses a HAVING clause. Use the output walkers for pagination"
217			*
218			* @see https://github.com/doctrine/doctrine2/blob/900b55d16afdcdeb5100d435a7166d3a425b9873/lib/Doctrine/ORM/Tools/Pagination/CountWalker.php#L50
219			*/
220			if (QueryChecker::hasHavingClause($queryBuilder)) {
221			return true;
222			}
223
224			/*
225			* "Paginating an entity with foreign key as identifier only works when using the Output Walkers. Call Paginator#setUseOutputWalkers(true) before iterating the paginator."
226			*
227			* @see https://github.com/doctrine/doctrine2/blob/900b55d16afdcdeb5100d435a7166d3a425b9873/lib/Doctrine/ORM/Tools/Pagination/LimitSubqueryWalker.php#L87
228			*/
229			if (QueryChecker::hasRootEntityWithForeignKeyIdentifier($queryBuilder, $this->managerRegistry)) {
230			return true;
231			}
232
233			/*
234			* "Cannot select distinct identifiers from query with LIMIT and ORDER BY on a column from a fetch joined to-many association. Use output walkers."
235			*
236			* @see https://github.com/doctrine/doctrine2/blob/900b55d16afdcdeb5100d435a7166d3a425b9873/lib/Doctrine/ORM/Tools/Pagination/LimitSubqueryWalker.php#L149
237			*/
238			if (
239			QueryChecker::hasMaxResults($queryBuilder) &&
240			QueryChecker::hasOrderByOnToManyJoin($queryBuilder, $this->managerRegistry)
241			) {
242			return true;
243			}
244
245			/*
246			* When using composite identifiers pagination will need Output walkers
247			*/
248			if (QueryChecker::hasRootEntityWithCompositeIdentifier($queryBuilder, $this->managerRegistry)) {
249			return true;
250			}
251
252			// Disable output walkers by default (performance)
253			return false;
254			}
255
256			private function getPaginationParameter(Request $request, string $parameterName, $default = null)
257			{
258			if (null !== $paginationAttribute = $request->attributes->get('_api_pagination')) {
259			return array_key_exists($parameterName, $paginationAttribute) ? $paginationAttribute[$parameterName] : $default;
260			}
261
262			return $request->query->get($parameterName, $default);
263			}
264			}
265

api-platform / core

Branch — master (ec8ced)

PaginationExtension::getResult()

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