StaticProxyFactory::makeInitializer() - Code Metrics - Inspection of "Replace proxy layer with ProxyManager's layer" - doctrine/orm - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Pull Request — develop (#6719)

by Marco

created 2017-09-23 14:07 UTC

StaticProxyFactory::makeInitializer() B

↳ Parent: StaticProxyFactory

Complexity

Conditions	2
Paths	1

Size

Total Lines	27
Code Lines	17

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	27
rs	8.8571
c	0
b	0
f	0
cc	2
eloc	17
nc	1
nop	2

<?php


declare(strict_types=1);

namespace Doctrine\ORM\Proxy\Factory;

use Doctrine\ORM\EntityManagerInterface;
use Doctrine\ORM\EntityNotFoundException;
use Doctrine\ORM\Mapping\ClassMetadata;
use Doctrine\ORM\Mapping\TransientMetadata;
use Doctrine\ORM\Persisters\Entity\EntityPersister;
use ProxyManager\Factory\LazyLoadingGhostFactory;
use ProxyManager\Proxy\GhostObjectInterface;

/**
 * Static factory for proxy objects.
 *
 * @package Doctrine\ORM\Proxy\Factory
 * @since 3.0
 *
 * @author Benjamin Eberlei <[email protected]>
 * @author Guilherme Blanco <[email protected]>
 */
final class StaticProxyFactory implements ProxyFactory
{
    private const SKIPPED_PROPERTIES = 'skippedProperties';

    /**
     * @var EntityManagerInterface
     */
    private $entityManager;

    /**
     * @var LazyLoadingGhostFactory
     */
    private $proxyFactory;

    /**
     * @var ClassMetadata[] indexed by metadata class name
     */
    private $cachedMetadata = [];

    /**
     * @var \Closure[] indexed by metadata class name
     */
    private $cachedInitializers = [];

    /**
     * @var EntityPersister[] indexed by metadata class name
     */
    private $cachedPersisters = [];

    /**
     * @var string[][] indexed by metadata class name
     */
    private $cachedSkippedProperties = [];

    public function __construct(
        EntityManagerInterface $entityManager,
        LazyLoadingGhostFactory $proxyFactory
    ) {
        $this->entityManager     = $entityManager;
        $this->proxyFactory      = $proxyFactory;
    }

    /**
     * {@inheritdoc}
     *
     * @param ClassMetadata[] $classMetadataList
     */
    public function generateProxyClasses(array $classMetadataList) : int
    {
        $concreteClasses = \array_filter($classMetadataList, function (ClassMetadata $metadata) : bool {
            return ! ($metadata->isMappedSuperclass || $metadata->getReflectionClass()->isAbstract());
        });

        foreach ($concreteClasses as $metadata) {
            $className = $metadata->getClassName();

            $this
                ->proxyFactory
                ->createProxy(
                    $className,
                    function () {
                        // empty closure, serves its purpose, for now
                    },
                    $this->cachedSkippedProperties[$className]
                        ?? $this->cachedSkippedProperties[$className] = [
                            self::SKIPPED_PROPERTIES => $this->skippedFieldsFqns($metadata)
                        ]
                );
        }

        return \count($concreteClasses);
    }

    /**
     * {@inheritdoc}
     * @throws \Doctrine\ORM\EntityNotFoundException
     */
    public function getProxy(string $className, array $identifier) : GhostObjectInterface
    {
        $metadata  = $this->cachedMetadata[$className]
            ?? $this->cachedMetadata[$className] = $this->entityManager->getClassMetadata($className);
        $persister = $this->cachedPersisters[$className]
            ?? $this->cachedPersisters[$className] = $this
                ->entityManager
                ->getUnitOfWork()
                ->getEntityPersister($metadata->getClassName());
class A
{
    public function foo() { }
}

class B extends A
{
    public function bar() { }
}

/**
 * @param A|B $x
 */
function someFunction($x)
{
    $x->foo(); // This call is fine as the method exists in A and B.
    $x->bar(); // This method only exists in B and might cause an error.
}

        $proxyInstance = $this
            ->proxyFactory
            ->createProxy(
                $metadata->getClassName(),
                $this->cachedInitializers[$className]
                    ?? $this->cachedInitializers[$className] = $this->makeInitializer($metadata, $persister),
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
                $this->cachedSkippedProperties[$className]
                    ?? $this->cachedSkippedProperties[$className] = [
                        self::SKIPPED_PROPERTIES => $this->skippedFieldsFqns($metadata)
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
                    ]
            );

        $persister->setIdentifier($proxyInstance, $identifier);

        return $proxyInstance;
    }

    private function makeInitializer(ClassMetadata $metadata, EntityPersister $persister) : \Closure
    {
        return function (
            GhostObjectInterface $ghostObject,
            string $method, // we don't care
            array $parameters, // we don't care
            & $initializer,
            array $properties // we currently do not use this

        ) use ($metadata, $persister) : bool {
            $originalInitializer = $initializer;
            $initializer = null;

            $identifier = $persister->getIdentifier($ghostObject);

            // @TODO how do we use `$properties` in the persister? That would be a massive optimisation
            if (! $persister->loadById($identifier, $ghostObject)) {
                $initializer = $originalInitializer;

                throw EntityNotFoundException::fromClassNameAndIdentifier(
                    $metadata->getClassName(),
                    $identifier
                );
            }

            return true;
        };
    }

    private function skippedFieldsFqns(ClassMetadata $metadata) : array
    {
        return \array_merge(
            $this->identifierFieldFqns($metadata),
            $this->transientFieldsFqns($metadata)
        );
    }

    private function transientFieldsFqns(ClassMetadata $metadata) : array
    {
        $transientFieldsFqns = [];

        foreach ($metadata->getDeclaredPropertiesIterator() as $name => $property) {
            if (! $property instanceof TransientMetadata) {
                continue;
            }

            $transientFieldsFqns[] = $this->propertyFqcn(
                $property
                    ->getDeclaringClass()
                    ->getReflectionClass()
                    ->getProperty($name) // @TODO possible NPR. This should never be null, why is it allowed to be?
            );
        }

        return $transientFieldsFqns;
    }

    private function identifierFieldFqns(ClassMetadata $metadata) : array
    {
        $idFieldFqcns = [];

        foreach ($metadata->getIdentifierFieldNames() as $idField) {
            $idFieldFqcns[] = $this->propertyFqcn(
                $metadata
                    ->getProperty($idField)
                    ->getDeclaringClass()
                    ->getReflectionClass()
                    ->getProperty($idField) // @TODO possible NPR. This should never be null, why is it allowed to be?
            );
        }

        return $idFieldFqcns;
    }

    private function propertyFqcn(\ReflectionProperty $property) : string
    {
        if ($property->isPrivate()) {
            return "\0" . $property->getDeclaringClass()->getName() . "\0" . $property->getName();

        }

        if ($property->isProtected()) {
            return "\0*\0" . $property->getName();
        }

        return $property->getName();
    }
}


1			<?php
2
3
4			declare(strict_types=1);
5
6			namespace Doctrine\ORM\Proxy\Factory;
7
8			use Doctrine\ORM\EntityManagerInterface;
9			use Doctrine\ORM\EntityNotFoundException;
10			use Doctrine\ORM\Mapping\ClassMetadata;
11			use Doctrine\ORM\Mapping\TransientMetadata;
12			use Doctrine\ORM\Persisters\Entity\EntityPersister;
13			use ProxyManager\Factory\LazyLoadingGhostFactory;
14			use ProxyManager\Proxy\GhostObjectInterface;
15
16			/**
17			* Static factory for proxy objects.
18			*
19			* @package Doctrine\ORM\Proxy\Factory
20			* @since 3.0
21			*
22			* @author Benjamin Eberlei <[email protected]>
23			* @author Guilherme Blanco <[email protected]>
24			*/
25			final class StaticProxyFactory implements ProxyFactory
26			{
27			private const SKIPPED_PROPERTIES = 'skippedProperties';
28
29			/**
30			* @var EntityManagerInterface
31			*/
32			private $entityManager;
33
34			/**
35			* @var LazyLoadingGhostFactory
36			*/
37			private $proxyFactory;
38
39			/**
40			* @var ClassMetadata[] indexed by metadata class name
41			*/
42			private $cachedMetadata = [];
43
44			/**
45			* @var \Closure[] indexed by metadata class name
46			*/
47			private $cachedInitializers = [];
48
49			/**
50			* @var EntityPersister[] indexed by metadata class name
51			*/
52			private $cachedPersisters = [];
53
54			/**
55			* @var string[][] indexed by metadata class name
56			*/
57			private $cachedSkippedProperties = [];
58
59			public function __construct(
60			EntityManagerInterface $entityManager,
61			LazyLoadingGhostFactory $proxyFactory
62			) {
63			$this->entityManager = $entityManager;
64			$this->proxyFactory = $proxyFactory;
65			}
66
67			/**
68			* {@inheritdoc}
69			*
70			* @param ClassMetadata[] $classMetadataList
71			*/
72			public function generateProxyClasses(array $classMetadataList) : int
73			{
74			$concreteClasses = \array_filter($classMetadataList, function (ClassMetadata $metadata) : bool {
75			return ! ($metadata->isMappedSuperclass \|\| $metadata->getReflectionClass()->isAbstract());
76			});
77
78			foreach ($concreteClasses as $metadata) {
79			$className = $metadata->getClassName();
80
81			$this
82			->proxyFactory
83			->createProxy(
84			$className,
85			function () {
86			// empty closure, serves its purpose, for now
87			},
88			$this->cachedSkippedProperties[$className]
89			?? $this->cachedSkippedProperties[$className] = [
90			self::SKIPPED_PROPERTIES => $this->skippedFieldsFqns($metadata)
91			]
92			);
93			}
94
95			return \count($concreteClasses);
96			}
97
98			/**
99			* {@inheritdoc}
100			* @throws \Doctrine\ORM\EntityNotFoundException
101			*/
102			public function getProxy(string $className, array $identifier) : GhostObjectInterface
103			{
104			$metadata = $this->cachedMetadata[$className]
105			?? $this->cachedMetadata[$className] = $this->entityManager->getClassMetadata($className);
106			$persister = $this->cachedPersisters[$className]
107			?? $this->cachedPersisters[$className] = $this
108			->entityManager
109			->getUnitOfWork()
110			->getEntityPersister($metadata->getClassName());
			0 ignored issues – show Bug introduced 2017-09-22 13:00 UTC by Report Bug Copy Issue Report The method `getClassName` does only exist in `Doctrine\ORM\Mapping\ClassMetadata`, but not in `Doctrine\Common\Persistence\Mapping\ClassMetadata`. It seems like the method you are trying to call exists only in some of the possible types. Let’s take a look at an example: class A { public function foo() { } } class B extends A { public function bar() { } } /** * @param A\|B $x / function someFunction($x) { $x->foo(); // This call is fine as the method exists in A and B. $x->bar(); // This method only exists in B and might cause an error. } Available Fixes Add an additional type-check: /* * @param A\|B $x / function someFunction($x) { $x->foo(); if ($x instanceof B) { $x->bar(); } } Only allow a single type to be passed if the variable comes from a parameter: function someFunction(B $x) { /* ... */ } Loading history...
111
112			$proxyInstance = $this
113			->proxyFactory
114			->createProxy(
115			$metadata->getClassName(),
116			$this->cachedInitializers[$className]
117			?? $this->cachedInitializers[$className] = $this->makeInitializer($metadata, $persister),
			0 ignored issues – show Bug introduced 2017-09-22 13:00 UTC by Report Bug Copy Issue Report It seems like `$metadata` defined by `$this->cachedMetadata[$c...ssMetadata($className))` on line `104` can also be of type `object<Doctrine\Common\P...\Mapping\ClassMetadata>`; however, `Doctrine\ORM\Proxy\Facto...tory::makeInitializer()` does only seem to accept `object<Doctrine\ORM\Mapping\ClassMetadata>`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
118			$this->cachedSkippedProperties[$className]
119			?? $this->cachedSkippedProperties[$className] = [
120			self::SKIPPED_PROPERTIES => $this->skippedFieldsFqns($metadata)
			0 ignored issues – show Bug introduced 2017-09-22 13:00 UTC by Report Bug Copy Issue Report It seems like `$metadata` defined by `$this->cachedMetadata[$c...ssMetadata($className))` on line `104` can also be of type `object<Doctrine\Common\P...\Mapping\ClassMetadata>`; however, `Doctrine\ORM\Proxy\Facto...ry::skippedFieldsFqns()` does only seem to accept `object<Doctrine\ORM\Mapping\ClassMetadata>`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
121			]
122			);
123
124			$persister->setIdentifier($proxyInstance, $identifier);
125
126			return $proxyInstance;
127			}
128
129			private function makeInitializer(ClassMetadata $metadata, EntityPersister $persister) : \Closure
130			{
131			return function (
132			GhostObjectInterface $ghostObject,
133			string $method, // we don't care
134			array $parameters, // we don't care
135			& $initializer,
136			array $properties // we currently do not use this
			0 ignored issues – show Unused Code introduced 2017-09-22 13:00 UTC by Report Bug Copy Issue Report The parameter `$properties` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
137			) use ($metadata, $persister) : bool {
138			$originalInitializer = $initializer;
139			$initializer = null;
140
141			$identifier = $persister->getIdentifier($ghostObject);
142
143			// @TODO how do we use `$properties` in the persister? That would be a massive optimisation
144			if (! $persister->loadById($identifier, $ghostObject)) {
145			$initializer = $originalInitializer;
146
147			throw EntityNotFoundException::fromClassNameAndIdentifier(
148			$metadata->getClassName(),
149			$identifier
150			);
151			}
152
153			return true;
154			};
155			}
156
157			private function skippedFieldsFqns(ClassMetadata $metadata) : array
158			{
159			return \array_merge(
160			$this->identifierFieldFqns($metadata),
161			$this->transientFieldsFqns($metadata)
162			);
163			}
164
165			private function transientFieldsFqns(ClassMetadata $metadata) : array
166			{
167			$transientFieldsFqns = [];
168
169			foreach ($metadata->getDeclaredPropertiesIterator() as $name => $property) {
170			if (! $property instanceof TransientMetadata) {
171			continue;
172			}
173
174			$transientFieldsFqns[] = $this->propertyFqcn(
175			$property
176			->getDeclaringClass()
177			->getReflectionClass()
178			->getProperty($name) // @TODO possible NPR. This should never be null, why is it allowed to be?
179			);
180			}
181
182			return $transientFieldsFqns;
183			}
184
185			private function identifierFieldFqns(ClassMetadata $metadata) : array
186			{
187			$idFieldFqcns = [];
188
189			foreach ($metadata->getIdentifierFieldNames() as $idField) {
190			$idFieldFqcns[] = $this->propertyFqcn(
191			$metadata
192			->getProperty($idField)
193			->getDeclaringClass()
194			->getReflectionClass()
195			->getProperty($idField) // @TODO possible NPR. This should never be null, why is it allowed to be?
196			);
197			}
198
199			return $idFieldFqcns;
200			}
201
202			private function propertyFqcn(\ReflectionProperty $property) : string
203			{
204			if ($property->isPrivate()) {
205			return "\0" . $property->getDeclaringClass()->getName() . "\0" . $property->getName();
			0 ignored issues – show introduced 2016-01-30 14:44 UTC by Report Bug Copy Issue Report Consider using `$property->class`. There is an issue with `getName()` and APC-enabled PHP versions. Loading history...
206			}
207
208			if ($property->isProtected()) {
209			return "\0*\0" . $property->getName();
210			}
211
212			return $property->getName();
213			}
214			}
215

doctrine / orm

Pull Request — develop (#6719)

StaticProxyFactory::makeInitializer() B

Complexity

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Duplication

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