SelectDataReader::__toString() - Code Metrics - Inspection of "Synchronize psalm-annotations with yiisoft/data pa..." - yiisoft/yii-cycle - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#69)

by Aleksei

created 2020-10-25 20:10 UTC

SelectDataReader::__toString() A

↳ Parent: SelectDataReader

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
eloc	1
c	2
b	0
f	0
dl	0
loc	3
rs	10
ccs	0
cts	2
cp	0
cc	1
nc	1
nop	0
crap	2

<?php

declare(strict_types=1);

namespace Yiisoft\Yii\Cycle\DataReader;

use Closure;
use Countable;
use Cycle\ORM\Select;
use Cycle\ORM\Select\QueryBuilder;
use InvalidArgumentException;
use Spiral\Database\Query\SelectQuery;
use Spiral\Pagination\PaginableInterface;
use Yiisoft\Data\Reader\DataReaderInterface;
use Yiisoft\Data\Reader\Filter\FilterInterface;
use Yiisoft\Data\Reader\Filter\FilterProcessorInterface;
use Yiisoft\Data\Reader\Sort;
use Yiisoft\Yii\Cycle\DataReader\Cache\CachedCount;
use Yiisoft\Yii\Cycle\DataReader\Cache\CachedCollection;
use Yiisoft\Yii\Cycle\DataReader\Processor;
use Yiisoft\Yii\Cycle\DataReader\Processor\QueryBuilderProcessor;

final class SelectDataReader implements DataReaderInterface
{
    /** @var Select|SelectQuery */
    private $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 FilterProcessorInterface[]|QueryBuilderProcessor[] */
    private array $filterProcessors = [];

    /**
     * @param Select|SelectQuery $query
     */
    public function __construct($query)
    {
        if (!$query instanceof Countable) {

            throw new InvalidArgumentException(sprintf('Query should implement %s interface', Countable::class));
        }
        if (!$query instanceof PaginableInterface) {

            throw new InvalidArgumentException(
                sprintf('Query should implement %s interface', PaginableInterface::class)
            );
        }
        $this->query = clone $query;
        $this->countCache = new CachedCount($this->query);
        $this->itemsCache = new CachedCollection();
        $this->oneItemCache = new CachedCollection();
        $this->setFilterProcessors(
            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): self
    {
        $new = clone $this;
        if ($new->limit !== $limit) {
            $new->limit = $limit;
            $new->itemsCache = new CachedCollection();
        }
        return $new;
    }

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

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

    /**
     * @psalm-mutation-free
     */
    public function withFilter(FilterInterface $filter): self
    {
        $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 withFilterProcessors(FilterProcessorInterface ...$filterProcessors): self
    {
        $new = clone $this;
        /** @psalm-suppress ImpureMethodCall */
        $new->setFilterProcessors(...$filterProcessors);
        /** @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->buildQuery();
            $this->itemsCache->setCollection($query->fetchAll());
        }
        return $this->itemsCache->getCollection();
    }

    /**
     * @return mixed
     */
    public function readOne()
    {
        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->buildQuery()->getIterator());
    }

    /**
     * Convert to SQL string
     */
    public function __toString(): string
    {
        return $this->getSql();
    }

    public function getSql(): string
    {
        return $this->buildQuery()->sqlStatement();
    }

    private function setFilterProcessors(FilterProcessorInterface ...$filterProcessors): void
    {
        $processors = [];
        foreach ($filterProcessors as $filterProcessor) {
            if ($filterProcessor instanceof QueryBuilderProcessor) {
                $processors[$filterProcessor->getOperator()] = $filterProcessor;
            }
        }
        $this->filterProcessors = array_merge($this->filterProcessors, $processors);
    }

    private function buildQuery()
    {
        $newQuery = clone $this->query;
        if ($this->offset !== null) {
            $newQuery->offset($this->offset);
        }
        if ($this->sorting !== null) {
            $newQuery->orderBy($this->sorting->getOrder());
        }
        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->toArray();
            $operation = array_shift($filterArray);
            $arguments = $filterArray;

            if (!array_key_exists($operation, $this->filterProcessors)) {
                throw new \RuntimeException(sprintf('Filter operator "%s" is not supported.', $operation));
            }
            /** @psalm-var QueryBuilderProcessor $processor */
            $processor = $this->filterProcessors[$operation];
            $select->where(...$processor->getAsWhereArguments($arguments, $this->filterProcessors));
        };
    }
    private function resetCountCache(): void
    {
        $newQuery = clone $this->query;
        if ($this->filter !== null) {
            $newQuery->andWhere($this->makeFilterClosure($this->filter));
        }
        $this->countCache = new CachedCount($newQuery);
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			namespace Yiisoft\Yii\Cycle\DataReader;
6
7			use Closure;
8			use Countable;
9			use Cycle\ORM\Select;
10			use Cycle\ORM\Select\QueryBuilder;
11			use InvalidArgumentException;
12			use Spiral\Database\Query\SelectQuery;
13			use Spiral\Pagination\PaginableInterface;
14			use Yiisoft\Data\Reader\DataReaderInterface;
15			use Yiisoft\Data\Reader\Filter\FilterInterface;
16			use Yiisoft\Data\Reader\Filter\FilterProcessorInterface;
17			use Yiisoft\Data\Reader\Sort;
18			use Yiisoft\Yii\Cycle\DataReader\Cache\CachedCount;
19			use Yiisoft\Yii\Cycle\DataReader\Cache\CachedCollection;
20			use Yiisoft\Yii\Cycle\DataReader\Processor;
21			use Yiisoft\Yii\Cycle\DataReader\Processor\QueryBuilderProcessor;
22
23			final class SelectDataReader implements DataReaderInterface
24			{
25			/** @var Select\|SelectQuery */
26			private $query;
27			private ?int $limit = null;
28			private ?int $offset = null;
29			private ?Sort $sorting = null;
30			private ?FilterInterface $filter = null;
31			private CachedCount $countCache;
32			private CachedCollection $itemsCache;
33			private CachedCollection $oneItemCache;
34			/** @var FilterProcessorInterface[]\|QueryBuilderProcessor[] */
35			private array $filterProcessors = [];
36
37			/**
38			* @param Select\|SelectQuery $query
39			*/
40			public function __construct($query)
41			{
42			if (!$query instanceof Countable) {
			0 ignored issues – show introduced 2020-02-04 20:45 UTC by Report Bug Copy Issue Report `$query` is always a sub-type of `Countable`. Loading history...
43			throw new InvalidArgumentException(sprintf('Query should implement %s interface', Countable::class));
44			}
45			if (!$query instanceof PaginableInterface) {
			0 ignored issues – show introduced 2020-02-04 20:45 UTC by Report Bug Copy Issue Report `$query` is always a sub-type of `Spiral\Pagination\PaginableInterface`. Loading history...
46			throw new InvalidArgumentException(
47			sprintf('Query should implement %s interface', PaginableInterface::class)
48			);
49			}
50			$this->query = clone $query;
51			$this->countCache = new CachedCount($this->query);
52			$this->itemsCache = new CachedCollection();
53			$this->oneItemCache = new CachedCollection();
54			$this->setFilterProcessors(
55			new Processor\All(),
56			new Processor\Any(),
57			new Processor\Equals(),
58			new Processor\GreaterThan(),
59			new Processor\GreaterThanOrEqual(),
60			new Processor\In(),
61			new Processor\LessThan(),
62			new Processor\LessThanOrEqual(),
63			new Processor\Like(),
64			// new Processor\Not()
65			);
66			}
67
68			public function getSort(): ?Sort
69			{
70			return $this->sorting;
71			}
72
73			/**
74			* @psalm-mutation-free
75			*/
76			public function withLimit(int $limit): self
77			{
78			$new = clone $this;
79			if ($new->limit !== $limit) {
80			$new->limit = $limit;
81			$new->itemsCache = new CachedCollection();
82			}
83			return $new;
84			}
85
86			/**
87			* @psalm-mutation-free
88			*/
89			public function withOffset(int $offset): self
90			{
91			$new = clone $this;
92			if ($new->offset !== $offset) {
93			$new->offset = $offset;
94			$new->itemsCache = new CachedCollection();
95			}
96			return $new;
97			}
98
99			/**
100			* @psalm-mutation-free
101			*/
102			public function withSort(?Sort $sorting): self
103			{
104			$new = clone $this;
105			if ($new->sorting !== $sorting) {
106			$new->sorting = $sorting;
107			$new->itemsCache = new CachedCollection();
108			$new->oneItemCache = new CachedCollection();
109			}
110			return $new;
111			}
112
113			/**
114			* @psalm-mutation-free
115			*/
116			public function withFilter(FilterInterface $filter): self
117			{
118			$new = clone $this;
119			if ($new->filter !== $filter) {
120			$new->filter = $filter;
121			$new->itemsCache = new CachedCollection();
122			$new->oneItemCache = new CachedCollection();
123			}
124			return $new;
125			}
126
127			/**
128			* @psalm-mutation-free
129			*/
130			public function withFilterProcessors(FilterProcessorInterface ...$filterProcessors): self
131			{
132			$new = clone $this;
133			/** @psalm-suppress ImpureMethodCall */
134			$new->setFilterProcessors(...$filterProcessors);
135			/** @psalm-suppress ImpureMethodCall */
136			$new->resetCountCache();
137			$new->itemsCache = new CachedCollection();
138			$new->oneItemCache = new CachedCollection();
139			return $new;
140			}
141
142			public function count(): int
143			{
144			return $this->countCache->getCount();
145			}
146
147			public function read(): iterable
148			{
149			if ($this->itemsCache->getCollection() === null) {
150			$query = $this->buildQuery();
151			$this->itemsCache->setCollection($query->fetchAll());
152			}
153			return $this->itemsCache->getCollection();
154			}
155
156			/**
157			* @return mixed
158			*/
159			public function readOne()
160			{
161			if (!$this->oneItemCache->isCollected()) {
162			$item = $this->itemsCache->isCollected()
163			// get first item from cached collection
164			? $this->itemsCache->getGenerator()->current()
165			// read data with limit 1
166			: $this->withLimit(1)->getIterator()->current();
167			$this->oneItemCache->setCollection($item === null ? [] : [$item]);
168			}
169
170			return $this->oneItemCache->getGenerator()->current();
171			}
172
173			/**
174			* Get Iterator without caching
175			*/
176			public function getIterator(): \Generator
177			{
178			yield from ($this->itemsCache->getCollection() ?? $this->buildQuery()->getIterator());
179			}
180
181			/**
182			* Convert to SQL string
183			*/
184			public function __toString(): string
185			{
186			return $this->getSql();
187			}
188
189			public function getSql(): string
190			{
191			return $this->buildQuery()->sqlStatement();
192			}
193
194			private function setFilterProcessors(FilterProcessorInterface ...$filterProcessors): void
195			{
196			$processors = [];
197			foreach ($filterProcessors as $filterProcessor) {
198			if ($filterProcessor instanceof QueryBuilderProcessor) {
199			$processors[$filterProcessor->getOperator()] = $filterProcessor;
200			}
201			}
202			$this->filterProcessors = array_merge($this->filterProcessors, $processors);
203			}
204
205			private function buildQuery()
206			{
207			$newQuery = clone $this->query;
208			if ($this->offset !== null) {
209			$newQuery->offset($this->offset);
210			}
211			if ($this->sorting !== null) {
212			$newQuery->orderBy($this->sorting->getOrder());
213			}
214			if ($this->limit !== null) {
215			$newQuery->limit($this->limit);
216			}
217			if ($this->filter !== null) {
218			$newQuery->andWhere($this->makeFilterClosure($this->filter));
219			}
220			return $newQuery;
221			}
222			private function makeFilterClosure(FilterInterface $filter): Closure
223			{
224			return function (QueryBuilder $select) use ($filter) {
225			$filterArray = $filter->toArray();
226			$operation = array_shift($filterArray);
227			$arguments = $filterArray;
228
229			if (!array_key_exists($operation, $this->filterProcessors)) {
230			throw new \RuntimeException(sprintf('Filter operator "%s" is not supported.', $operation));
231			}
232			/** @psalm-var QueryBuilderProcessor $processor */
233			$processor = $this->filterProcessors[$operation];
234			$select->where(...$processor->getAsWhereArguments($arguments, $this->filterProcessors));
235			};
236			}
237			private function resetCountCache(): void
238			{
239			$newQuery = clone $this->query;
240			if ($this->filter !== null) {
241			$newQuery->andWhere($this->makeFilterClosure($this->filter));
242			}
243			$this->countCache = new CachedCount($newQuery);
244			}
245			}
246

yiisoft / yii-cycle

Pull Request — master (#69)

SelectDataReader::__toString() A

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