RelationsHandler::deserializeRelation() - Code Metrics - Inspection of "[WIP] 2.0" - bankiru/jsonrpc-server-bundle - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

Pull Request — master (#11)

by Pavel

created 2017-08-14 09:39 UTC

RelationsHandler::deserializeRelation() D

↳ Parent: RelationsHandler

Complexity

Conditions	9
Paths	16

Size

Total Lines	34
Code Lines	18

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	34
rs	4.909
c	0
b	0
f	0
cc	9
eloc	18
nc	16
nop	3

<?php

namespace Bankiru\Api\JsonRpc\Adapters\JMS;

use Doctrine\Common\Persistence\ObjectManager;
use Doctrine\ORM\Mapping\ClassMetadata;
use JMS\Serializer\JsonDeserializationVisitor;
use JMS\Serializer\JsonSerializationVisitor;

final class RelationsHandler
{
    /**
     * @var ObjectManager
     */
    private $manager;

    /**
     * RelationsHandler constructor.
     *
     * @param ObjectManager $manager
     */
    public function __construct(ObjectManager $manager)
    {
        $this->manager = $manager;
    }

    public function serializeRelation(JsonSerializationVisitor $visitor, $relation)

    {
        if ($relation instanceof \Traversable) {
            $relation = iterator_to_array($relation);
        }

        if (is_array($relation)) {
            return array_map([$this, 'getSingleEntityRelation'], $relation);
        }

        return $this->getSingleEntityRelation($relation);
    }

    public function deserializeRelation(JsonDeserializationVisitor $visitor, $relation, array $type)

    {
        $className = isset($type['params'][0]['name']) ? $type['params'][0]['name'] : null;

        if (!class_exists($className)) {
            throw new \InvalidArgumentException('Class name should be explicitly set for deserialization');
        }

        /** @var ClassMetadata $metadata */
        $metadata = $this->manager->getClassMetadata($className);

        if (!is_array($relation)) {
            return $this->deserializeIdentifier($className, $relation);
        }

        $single = false;
        if ($metadata->isIdentifierComposite) {
            $single = true;
            foreach ($metadata->getIdentifierFieldNames() as $idName) {
                $single = $single && array_key_exists($idName, $relation);
            }
        }

        if ($single) {
            return $this->deserializeIdentifier($className, $relation);
        }

        $objects = [];
        foreach ($relation as $idSet) {
            $objects[] = $this->deserializeIdentifier($className, $idSet);
        }

        return $objects;
    }

    /**
     * @param $relation
     *
     * @return array|mixed
     */
    private function getSingleEntityRelation($relation)
    {
        $metadata = $this->manager->getClassMetadata(get_class($relation));

        $ids = $metadata->getIdentifierValues($relation);
        if (1 === count($metadata->getIdentifierFieldNames())) {
            $ids = array_shift($ids);
        }

        return $ids;
    }

    /**
     * @param string $className
     * @param mixed  $identifier
     *
     * @return object
     */
    private function deserializeIdentifier($className, $identifier)
    {
        if (method_exists($this->manager, 'getReference')) {
            return $this->manager->getReference($className, $identifier);
interface User
{
    /** @return string */
    public function getPassword();
}

class MyUser implements User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
        }

        return $this->manager->find($className, $identifier);
    }
}


1			<?php
2
3			namespace Bankiru\Api\JsonRpc\Adapters\JMS;
4
5			use Doctrine\Common\Persistence\ObjectManager;
6			use Doctrine\ORM\Mapping\ClassMetadata;
7			use JMS\Serializer\JsonDeserializationVisitor;
8			use JMS\Serializer\JsonSerializationVisitor;
9
10			final class RelationsHandler
11			{
12			/**
13			* @var ObjectManager
14			*/
15			private $manager;
16
17			/**
18			* RelationsHandler constructor.
19			*
20			* @param ObjectManager $manager
21			*/
22			public function __construct(ObjectManager $manager)
23			{
24			$this->manager = $manager;
25			}
26
27			public function serializeRelation(JsonSerializationVisitor $visitor, $relation)
			0 ignored issues – show Unused Code introduced 2017-08-14 09:46 UTC by Report Bug Copy Issue Report The parameter `$visitor` 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...
28			{
29			if ($relation instanceof \Traversable) {
30			$relation = iterator_to_array($relation);
31			}
32
33			if (is_array($relation)) {
34			return array_map([$this, 'getSingleEntityRelation'], $relation);
35			}
36
37			return $this->getSingleEntityRelation($relation);
38			}
39
40			public function deserializeRelation(JsonDeserializationVisitor $visitor, $relation, array $type)
			0 ignored issues – show Unused Code introduced 2017-08-14 09:46 UTC by Report Bug Copy Issue Report The parameter `$visitor` 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...
41			{
42			$className = isset($type['params'][0]['name']) ? $type['params'][0]['name'] : null;
43
44			if (!class_exists($className)) {
45			throw new \InvalidArgumentException('Class name should be explicitly set for deserialization');
46			}
47
48			/** @var ClassMetadata $metadata */
49			$metadata = $this->manager->getClassMetadata($className);
50
51			if (!is_array($relation)) {
52			return $this->deserializeIdentifier($className, $relation);
53			}
54
55			$single = false;
56			if ($metadata->isIdentifierComposite) {
57			$single = true;
58			foreach ($metadata->getIdentifierFieldNames() as $idName) {
59			$single = $single && array_key_exists($idName, $relation);
60			}
61			}
62
63			if ($single) {
64			return $this->deserializeIdentifier($className, $relation);
65			}
66
67			$objects = [];
68			foreach ($relation as $idSet) {
69			$objects[] = $this->deserializeIdentifier($className, $idSet);
70			}
71
72			return $objects;
73			}
74
75			/**
76			* @param $relation
77			*
78			* @return array\|mixed
79			*/
80			private function getSingleEntityRelation($relation)
81			{
82			$metadata = $this->manager->getClassMetadata(get_class($relation));
83
84			$ids = $metadata->getIdentifierValues($relation);
85			if (1 === count($metadata->getIdentifierFieldNames())) {
86			$ids = array_shift($ids);
87			}
88
89			return $ids;
90			}
91
92			/**
93			* @param string $className
94			* @param mixed $identifier
95			*
96			* @return object
97			*/
98			private function deserializeIdentifier($className, $identifier)
99			{
100			if (method_exists($this->manager, 'getReference')) {
101			return $this->manager->getReference($className, $identifier);
			0 ignored issues – show Bug introduced 2017-08-14 09:46 UTC by Report Bug Copy Issue Report It seems like you code against a concrete implementation and not the interface `Doctrine\Common\Persistence\ObjectManager` as the method `getReference()` does only exist in the following implementations of said interface: `Doctrine\ORM\Decorator\EntityManagerDecorator`, `Doctrine\ORM\EntityManager`. Let’s take a look at an example: interface User { /** @return string / public function getPassword(); } class MyUser implements User { public function getPassword() { // return something } public function getDisplayName() { // return some name. } } class AuthSystem { public function authenticate(User $user) { $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName())); // do something. } } In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break. Available Fixes Change the type-hint for the parameter: class AuthSystem { public function authenticate(MyUser $user) { / ... / } } Add an additional type-check: class AuthSystem { public function authenticate(User $user) { if ($user instanceof MyUser) { $this->logger->info(/* ... /); } // or alternatively if ( ! $user instanceof MyUser) { throw new \LogicException( '$user must be an instance of MyUser, ' .'other instances are not supported.' ); } } } Note:* PHP Analyzer uses reverse abstract interpretation to narrow down the types inside the if block in such a case. Add the method to the interface: interface User { /** @return string / public function getPassword(); /* @return string */ public function getDisplayName(); } Loading history...
102			}
103
104			return $this->manager->find($className, $identifier);
105			}
106			}
107

bankiru / jsonrpc-server-bundle

Pull Request — master (#11)

RelationsHandler::deserializeRelation() D

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