EntityReader::setFilterHandlers() - Code Metrics - Inspection of "Adapt yiisoft/data changes (#152)" - yiisoft/yii-cycle - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( ca4eed...492557 )

by Aleksei

created 2023-01-26 16:31 UTC

EntityReader::setFilterHandlers() A

↳ Parent: EntityReader

Complexity

Conditions	3
Paths	3

Size

Total Lines	9
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	12

Importance

Changes

Metric	Value
cc	3
eloc	5
c	0
b	0
f	0
nc	3
nop	1
dl	0
loc	9
ccs	0
cts	6
cp	0
crap	12
rs	10

<?php

declare(strict_types=1);

namespace Yiisoft\Yii\Cycle\Data\Reader;

use Closure;
use Cycle\Database\Query\SelectQuery;
use Cycle\ORM\Select;
use Cycle\ORM\Select\QueryBuilder;
use Generator;
use InvalidArgumentException;
use RuntimeException;
use Yiisoft\Data\Reader\DataReaderInterface;
use Yiisoft\Data\Reader\FilterHandlerInterface;
use Yiisoft\Data\Reader\FilterInterface;
use Yiisoft\Data\Reader\Sort;
use Yiisoft\Yii\Cycle\Data\Reader\Cache\CachedCollection;
use Yiisoft\Yii\Cycle\Data\Reader\Cache\CachedCount;
use Yiisoft\Yii\Cycle\Data\Reader\Processor\QueryBuilderProcessor;

/**
 * @template TKey as array-key
 * @template TValue as array|object
 *
 * @implements DataReaderInterface<TKey, TValue>
 */
final class EntityReader implements DataReaderInterface
{
    private Select|SelectQuery $query;
    private ?int $limit = null;
    private ?int $offset = null;
    private ?Sort $sorting = null;
    private ?FilterInterface $filter = null;
    private CachedCount $countCache;
    private CachedCollection $itemsCache;
    private CachedCollection $oneItemCache;
    /** @var FilterHandlerInterface[]|QueryBuilderProcessor[] */
    private array $filterHandlers = [];

    public function __construct(Select|SelectQuery $query)
    {
        $this->query = clone $query;
        $this->countCache = new CachedCount($this->query);
        $this->itemsCache = new CachedCollection();
        $this->oneItemCache = new CachedCollection();
        $this->setFilterHandlers(
            new Processor\All(),
            new Processor\Any(),
            new Processor\Equals(),
            new Processor\GreaterThan(),
            new Processor\GreaterThanOrEqual(),
            new Processor\In(),
            new Processor\LessThan(),
            new Processor\LessThanOrEqual(),
            new Processor\Like(),
            // new Processor\Not()
        );
    }

    public function getSort(): ?Sort
    {
        return $this->sorting;
    }

    /**
     * @psalm-mutation-free
     */
    public function withLimit(int $limit): static
    {
        if ($limit < 0) {
            throw new InvalidArgumentException('$limit must not be less than 0.');
        }
        $new = clone $this;
        if ($new->limit !== $limit) {
            $new->limit = $limit;
            $new->itemsCache = new CachedCollection();
        }
        return $new;
    }

    /**
     * @psalm-mutation-free
     */
    public function withOffset(int $offset): static
    {
        $new = clone $this;
        if ($new->offset !== $offset) {
            $new->offset = $offset;
            $new->itemsCache = new CachedCollection();
        }
        return $new;
    }

    /**
     * @psalm-mutation-free
     */
    public function withSort(?Sort $sort): static
    {
        $new = clone $this;
        if ($new->sorting !== $sort) {
            $new->sorting = $sort;
            $new->itemsCache = new CachedCollection();
            $new->oneItemCache = new CachedCollection();
        }
        return $new;
    }

    /**
     * @psalm-mutation-free
     */
    public function withFilter(FilterInterface $filter): static
    {
        $new = clone $this;
        if ($new->filter !== $filter) {
            $new->filter = $filter;
            $new->itemsCache = new CachedCollection();
            $new->oneItemCache = new CachedCollection();
        }
        return $new;
    }

    /**
     * @psalm-mutation-free
     */
    public function withFilterHandlers(FilterHandlerInterface ...$filterHandlers): static
    {
        $new = clone $this;
        /** @psalm-suppress ImpureMethodCall */
        $new->setFilterHandlers(...$filterHandlers);
        /** @psalm-suppress ImpureMethodCall */
        $new->resetCountCache();
        $new->itemsCache = new CachedCollection();
        $new->oneItemCache = new CachedCollection();
        return $new;
    }

    public function count(): int
    {
        return $this->countCache->getCount();
    }

    public function read(): iterable
    {
        if ($this->itemsCache->getCollection() === null) {
            $query = $this->buildSelectQuery();
            $this->itemsCache->setCollection($query->fetchAll());
        }
        return $this->itemsCache->getCollection();
    }

    public function readOne(): null|array|object
    {
        if (!$this->oneItemCache->isCollected()) {
            $item = $this->itemsCache->isCollected()
                // get first item from cached collection
                ? $this->itemsCache->getGenerator()->current()
                // read data with limit 1
                : $this->withLimit(1)->getIterator()->current();
            $this->oneItemCache->setCollection($item === null ? [] : [$item]);
        }

        return $this->oneItemCache->getGenerator()->current();
    }

    /**
     * Get Iterator without caching
     */
    public function getIterator(): Generator
    {
        yield from $this->itemsCache->getCollection() ?? $this->buildSelectQuery()->getIterator();
    }

    public function getSql(): string
    {
        $query = $this->buildSelectQuery();
        return (string)($query instanceof Select ? $query->buildQuery() : $query);
    }

    private function setFilterHandlers(FilterHandlerInterface ...$filterHandlers): void
    {
        $handlers = [];
        foreach ($filterHandlers as $filterHandler) {
            if ($filterHandler instanceof QueryBuilderProcessor) {
                $handlers[$filterHandler->getOperator()] = $filterHandler;
            }
        }
        $this->filterHandlers = array_merge($this->filterHandlers, $handlers);
    }

    private function buildSelectQuery(): SelectQuery|Select
    {
        $newQuery = clone $this->query;
        if ($this->offset !== null) {
            $newQuery->offset($this->offset);
        }
        if ($this->sorting !== null) {
            $newQuery->orderBy($this->normalizeSortingCriteria($this->sorting->getCriteria()));
        }
        if ($this->limit !== null) {
            $newQuery->limit($this->limit);
        }
        if ($this->filter !== null) {
            $newQuery->andWhere($this->makeFilterClosure($this->filter));
        }
        return $newQuery;
    }

    private function makeFilterClosure(FilterInterface $filter): Closure
    {
        return function (QueryBuilder $select) use ($filter) {
            $filterArray = $filter->toCriteriaArray();
            $operation = array_shift($filterArray);
            $arguments = $filterArray;

            if (!array_key_exists($operation, $this->filterHandlers)) {
                throw new RuntimeException(sprintf('Filter operator "%s" is not supported.', $operation));
            }
            /** @psalm-var QueryBuilderProcessor $handler */
            $handler = $this->filterHandlers[$operation];
            $select->where(...$handler->getAsWhereArguments($arguments, $this->filterHandlers));
        };
    }

    private function resetCountCache(): void
    {
        $newQuery = clone $this->query;
        if ($this->filter !== null) {
            $newQuery->andWhere($this->makeFilterClosure($this->filter));
        }
        $this->countCache = new CachedCount($newQuery);
    }

    private function normalizeSortingCriteria(array $criteria): array
    {
        foreach ($criteria as $field => $direction) {
            if (is_int($direction)) {
                $direction = match ($direction) {
                    SORT_DESC => 'DESC',
                    default => 'ASC',
                };
            }
            $criteria[$field] = $direction;
        }

        return $criteria;
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			namespace Yiisoft\Yii\Cycle\Data\Reader;
6
7			use Closure;
8			use Cycle\Database\Query\SelectQuery;
9			use Cycle\ORM\Select;
10			use Cycle\ORM\Select\QueryBuilder;
11			use Generator;
12			use InvalidArgumentException;
13			use RuntimeException;
14			use Yiisoft\Data\Reader\DataReaderInterface;
15			use Yiisoft\Data\Reader\FilterHandlerInterface;
16			use Yiisoft\Data\Reader\FilterInterface;
17			use Yiisoft\Data\Reader\Sort;
18			use Yiisoft\Yii\Cycle\Data\Reader\Cache\CachedCollection;
19			use Yiisoft\Yii\Cycle\Data\Reader\Cache\CachedCount;
20			use Yiisoft\Yii\Cycle\Data\Reader\Processor\QueryBuilderProcessor;
21
22			/**
23			* @template TKey as array-key
24			* @template TValue as array\|object
25			*
26			* @implements DataReaderInterface<TKey, TValue>
27			*/
28			final class EntityReader implements DataReaderInterface
29			{
30			private Select\|SelectQuery $query;
31			private ?int $limit = null;
32			private ?int $offset = null;
33			private ?Sort $sorting = null;
34			private ?FilterInterface $filter = null;
35			private CachedCount $countCache;
36			private CachedCollection $itemsCache;
37			private CachedCollection $oneItemCache;
38			/** @var FilterHandlerInterface[]\|QueryBuilderProcessor[] */
39			private array $filterHandlers = [];
40
41			public function __construct(Select\|SelectQuery $query)
42			{
43			$this->query = clone $query;
44			$this->countCache = new CachedCount($this->query);
45			$this->itemsCache = new CachedCollection();
46			$this->oneItemCache = new CachedCollection();
47			$this->setFilterHandlers(
48			new Processor\All(),
49			new Processor\Any(),
50			new Processor\Equals(),
51			new Processor\GreaterThan(),
52			new Processor\GreaterThanOrEqual(),
53			new Processor\In(),
54			new Processor\LessThan(),
55			new Processor\LessThanOrEqual(),
56			new Processor\Like(),
57			// new Processor\Not()
58			);
59			}
60
61			public function getSort(): ?Sort
62			{
63			return $this->sorting;
64			}
65
66			/**
67			* @psalm-mutation-free
68			*/
69			public function withLimit(int $limit): static
70			{
71			if ($limit < 0) {
72			throw new InvalidArgumentException('$limit must not be less than 0.');
73			}
74			$new = clone $this;
75			if ($new->limit !== $limit) {
76			$new->limit = $limit;
77			$new->itemsCache = new CachedCollection();
78			}
79			return $new;
80			}
81
82			/**
83			* @psalm-mutation-free
84			*/
85			public function withOffset(int $offset): static
86			{
87			$new = clone $this;
88			if ($new->offset !== $offset) {
89			$new->offset = $offset;
90			$new->itemsCache = new CachedCollection();
91			}
92			return $new;
93			}
94
95			/**
96			* @psalm-mutation-free
97			*/
98			public function withSort(?Sort $sort): static
99			{
100			$new = clone $this;
101			if ($new->sorting !== $sort) {
102			$new->sorting = $sort;
103			$new->itemsCache = new CachedCollection();
104			$new->oneItemCache = new CachedCollection();
105			}
106			return $new;
107			}
108
109			/**
110			* @psalm-mutation-free
111			*/
112			public function withFilter(FilterInterface $filter): static
113			{
114			$new = clone $this;
115			if ($new->filter !== $filter) {
116			$new->filter = $filter;
117			$new->itemsCache = new CachedCollection();
118			$new->oneItemCache = new CachedCollection();
119			}
120			return $new;
121			}
122
123			/**
124			* @psalm-mutation-free
125			*/
126			public function withFilterHandlers(FilterHandlerInterface ...$filterHandlers): static
127			{
128			$new = clone $this;
129			/** @psalm-suppress ImpureMethodCall */
130			$new->setFilterHandlers(...$filterHandlers);
131			/** @psalm-suppress ImpureMethodCall */
132			$new->resetCountCache();
133			$new->itemsCache = new CachedCollection();
134			$new->oneItemCache = new CachedCollection();
135			return $new;
136			}
137
138			public function count(): int
139			{
140			return $this->countCache->getCount();
141			}
142
143			public function read(): iterable
144			{
145			if ($this->itemsCache->getCollection() === null) {
146			$query = $this->buildSelectQuery();
147			$this->itemsCache->setCollection($query->fetchAll());
148			}
149			return $this->itemsCache->getCollection();
150			}
151
152			public function readOne(): null\|array\|object
153			{
154			if (!$this->oneItemCache->isCollected()) {
155			$item = $this->itemsCache->isCollected()
156			// get first item from cached collection
157			? $this->itemsCache->getGenerator()->current()
158			// read data with limit 1
159			: $this->withLimit(1)->getIterator()->current();
160			$this->oneItemCache->setCollection($item === null ? [] : [$item]);
161			}
162
163			return $this->oneItemCache->getGenerator()->current();
164			}
165
166			/**
167			* Get Iterator without caching
168			*/
169			public function getIterator(): Generator
170			{
171			yield from $this->itemsCache->getCollection() ?? $this->buildSelectQuery()->getIterator();
172			}
173
174			public function getSql(): string
175			{
176			$query = $this->buildSelectQuery();
177			return (string)($query instanceof Select ? $query->buildQuery() : $query);
178			}
179
180			private function setFilterHandlers(FilterHandlerInterface ...$filterHandlers): void
181			{
182			$handlers = [];
183			foreach ($filterHandlers as $filterHandler) {
184			if ($filterHandler instanceof QueryBuilderProcessor) {
185			$handlers[$filterHandler->getOperator()] = $filterHandler;
186			}
187			}
188			$this->filterHandlers = array_merge($this->filterHandlers, $handlers);
189			}
190
191			private function buildSelectQuery(): SelectQuery\|Select
192			{
193			$newQuery = clone $this->query;
194			if ($this->offset !== null) {
195			$newQuery->offset($this->offset);
196			}
197			if ($this->sorting !== null) {
198			$newQuery->orderBy($this->normalizeSortingCriteria($this->sorting->getCriteria()));
199			}
200			if ($this->limit !== null) {
201			$newQuery->limit($this->limit);
202			}
203			if ($this->filter !== null) {
204			$newQuery->andWhere($this->makeFilterClosure($this->filter));
205			}
206			return $newQuery;
207			}
208
209			private function makeFilterClosure(FilterInterface $filter): Closure
210			{
211			return function (QueryBuilder $select) use ($filter) {
212			$filterArray = $filter->toCriteriaArray();
213			$operation = array_shift($filterArray);
214			$arguments = $filterArray;
215
216			if (!array_key_exists($operation, $this->filterHandlers)) {
217			throw new RuntimeException(sprintf('Filter operator "%s" is not supported.', $operation));
218			}
219			/** @psalm-var QueryBuilderProcessor $handler */
220			$handler = $this->filterHandlers[$operation];
221			$select->where(...$handler->getAsWhereArguments($arguments, $this->filterHandlers));
222			};
223			}
224
225			private function resetCountCache(): void
226			{
227			$newQuery = clone $this->query;
228			if ($this->filter !== null) {
229			$newQuery->andWhere($this->makeFilterClosure($this->filter));
230			}
231			$this->countCache = new CachedCount($newQuery);
232			}
233
234			private function normalizeSortingCriteria(array $criteria): array
235			{
236			foreach ($criteria as $field => $direction) {
237			if (is_int($direction)) {
238			$direction = match ($direction) {
239			SORT_DESC => 'DESC',
240			default => 'ASC',
241			};
242			}
243			$criteria[$field] = $direction;
244			}
245
246			return $criteria;
247			}
248			}
249

yiisoft / yii-cycle

Push — master ( ca4eed...492557 )

EntityReader::setFilterHandlers() A

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