AbstractClassMetadataFactory::hasMetadataFor() - Code Metrics - doctrine/persistence - Measure and Improve Code Quality continuously with Scrutinizer

AbstractClassMetadataFactory::hasMetadataFor() A
last analyzed 2020-05-14 16:10 UTC

↳ Parent: AbstractClassMetadataFactory

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

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

<?php

declare(strict_types=1);

namespace Doctrine\Persistence\Mapping;

use Doctrine\Common\Cache\Cache;
use Doctrine\Persistence\Mapping\Driver\MappingDriver;
use Doctrine\Persistence\Proxy;
use ReflectionException;
use function array_reverse;
use function array_unshift;
use function explode;
use function strpos;
use function strrpos;
use function substr;

/**
 * The ClassMetadataFactory is used to create ClassMetadata objects that contain all the
 * metadata mapping informations of a class which describes how a class should be mapped
 * to a relational database.
 *
 * This class was abstracted from the ORM ClassMetadataFactory.
 */
abstract class AbstractClassMetadataFactory implements ClassMetadataFactory
{
    /**
     * Salt used by specific Object Manager implementation.
     *
     * @var string
     */
    protected $cacheSalt = '$CLASSMETADATA';

    /** @var Cache|null */
    private $cacheDriver;

    /** @var array<string, ClassMetadata> */
    private $loadedMetadata = [];

    /** @var bool */
    protected $initialized = false;

    /** @var ReflectionService|null */
    private $reflectionService = null;

    /**
     * Sets the cache driver used by the factory to cache ClassMetadata instances.
     *
     * @return void
     */
    public function setCacheDriver(?Cache $cacheDriver = null)
    {
        $this->cacheDriver = $cacheDriver;
    }

    /**
     * Gets the cache driver used by the factory to cache ClassMetadata instances.
     *
     * @return Cache|null
     */
    public function getCacheDriver()
    {
        return $this->cacheDriver;
    }

    /**
     * Returns an array of all the loaded metadata currently in memory.
     *
     * @return ClassMetadata[]
     */
    public function getLoadedMetadata()
    {
        return $this->loadedMetadata;
    }

    /**
     * Forces the factory to load the metadata of all classes known to the underlying
     * mapping driver.
     *
     * @return array<int, ClassMetadata> The ClassMetadata instances of all mapped classes.
     */
    public function getAllMetadata()
    {
        if (! $this->initialized) {
            $this->initialize();
        }

        $driver   = $this->getDriver();
        $metadata = [];
        foreach ($driver->getAllClassNames() as $className) {
            $metadata[] = $this->getMetadataFor($className);
        }

        return $metadata;
    }

    /**
     * Lazy initialization of this stuff, especially the metadata driver,
     * since these are not needed at all when a metadata cache is active.
     *
     * @return void
     */
    abstract protected function initialize();

    /**
     * Gets the fully qualified class-name from the namespace alias.
     *
     * @return string
     */
    abstract protected function getFqcnFromAlias(
        string $namespaceAlias,
        string $simpleClassName
    );

    /**
     * Returns the mapping driver implementation.
     *
     * @return MappingDriver
     */
    abstract protected function getDriver();

    /**
     * Wakes up reflection after ClassMetadata gets unserialized from cache.
     *
     * @return void
     */
    abstract protected function wakeupReflection(
        ClassMetadata $class,
        ReflectionService $reflService
    );

    /**
     * Initializes Reflection after ClassMetadata was constructed.
     *
     * @return void
     */
    abstract protected function initializeReflection(
        ClassMetadata $class,
        ReflectionService $reflService
    );

    /**
     * Checks whether the class metadata is an entity.
     *
     * This method should return false for mapped superclasses or embedded classes.
     *
     * @return bool
     */
    abstract protected function isEntity(ClassMetadata $class);

    /**
     * Gets the class metadata descriptor for a class.
     *
     * @param string $className The name of the class.
     *
     * @return ClassMetadata
     *
     * @throws ReflectionException
     * @throws MappingException
     */
    public function getMetadataFor(string $className)
    {
        if (isset($this->loadedMetadata[$className])) {
            return $this->loadedMetadata[$className];
        }

        // Check for namespace alias
        if (strpos($className, ':') !== false) {
            [$namespaceAlias, $simpleClassName] = explode(':', $className, 2);

            $realClassName = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
        } else {
            $realClassName = $this->getRealClass($className);
        }

        if (isset($this->loadedMetadata[$realClassName])) {
            // We do not have the alias name in the map, include it
            return $this->loadedMetadata[$className] = $this->loadedMetadata[$realClassName];
        }

        $loadingException = null;


        try {
            if ($this->cacheDriver !== null) {
                $cached = $this->cacheDriver->fetch($realClassName . $this->cacheSalt);

                if ($cached instanceof ClassMetadata) {
                    $this->loadedMetadata[$realClassName] = $cached;

                    $this->wakeupReflection($cached, $this->getReflectionService());
                } else {
                    foreach ($this->loadMetadata($realClassName) as $loadedClassName) {
                        $this->cacheDriver->save(
                            $loadedClassName . $this->cacheSalt,
                            $this->loadedMetadata[$loadedClassName]
                        );
                    }
                }
            } else {
                $this->loadMetadata($realClassName);
            }
        } catch (MappingException $loadingException) {
            $fallbackMetadataResponse = $this->onNotFoundMetadata($realClassName);
class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
$object = $a->getObject();

            if ($fallbackMetadataResponse === null) {

                throw $loadingException;
            }

            $this->loadedMetadata[$realClassName] = $fallbackMetadataResponse;
        }

        if ($className !== $realClassName) {
            // We do not have the alias name in the map, include it
            $this->loadedMetadata[$className] = $this->loadedMetadata[$realClassName];
        }

        return $this->loadedMetadata[$className];
    }

    /**
     * Checks whether the factory has the metadata for a class loaded already.
     *
     * @return bool TRUE if the metadata of the class in question is already loaded, FALSE otherwise.
     */
    public function hasMetadataFor(string $className)
    {
        return isset($this->loadedMetadata[$className]);
    }

    /**
     * Sets the metadata descriptor for a specific class.
     *
     * NOTE: This is only useful in very special cases, like when generating proxy classes.
     *
     * @return void
     */
    public function setMetadataFor(string $className, ClassMetadata $class)
    {
        $this->loadedMetadata[$className] = $class;
    }

    /**
     * Gets an array of parent classes for the given entity class.
     *
     * @return array<int, string>
     */
    protected function getParentClasses(string $name)
    {
        // Collect parent classes, ignoring transient (not-mapped) classes.
        $parentClasses = [];


        $parentClasses = $this->getReflectionService()
            ->getParentClasses($name);

        foreach (array_reverse($parentClasses) as $parentClass) {
            if ($this->getDriver()->isTransient($parentClass)) {
                continue;
            }

            $parentClasses[] = $parentClass;
        }

        return $parentClasses;
    }

    /**
     * Loads the metadata of the class in question and all it's ancestors whose metadata
     * is still not loaded.
     *
     * Important: The class $name does not necessarily exist at this point here.
     * Scenarios in a code-generation setup might have access to XML/YAML
     * Mapping files without the actual PHP code existing here. That is why the
     * {@see Doctrine\Persistence\Mapping\ReflectionService} interface
     * should be used for reflection.
     *
     * @param string $name The name of the class for which the metadata should get loaded.
     *
     * @return array<int, string>
     */
    protected function loadMetadata(string $name)
    {
        if (! $this->initialized) {
            $this->initialize();
        }

        $loaded = [];

        $parentClasses   = $this->getParentClasses($name);
        $parentClasses[] = $name;

        // Move down the hierarchy of parent classes, starting from the topmost class
        $parent          = null;
        $rootEntityFound = false;
        $visited         = [];
        $reflService     = $this->getReflectionService();

        foreach ($parentClasses as $className) {
            if (isset($this->loadedMetadata[$className])) {
                $parent = $this->loadedMetadata[$className];

                if ($this->isEntity($parent)) {
                    $rootEntityFound = true;

                    array_unshift($visited, $className);
                }

                continue;
            }

            $class = $this->newClassMetadataInstance($className);
            $this->initializeReflection($class, $reflService);

            $this->doLoadMetadata($class, $parent, $rootEntityFound, $visited);

            $this->loadedMetadata[$className] = $class;

            $parent = $class;

            if ($this->isEntity($class)) {
                $rootEntityFound = true;

                array_unshift($visited, $className);
            }

            $this->wakeupReflection($class, $reflService);

            $loaded[] = $className;
        }

        return $loaded;
    }

    /**
     * Provides a fallback hook for loading metadata when loading failed due to reflection/mapping exceptions
     *
     * Override this method to implement a fallback strategy for failed metadata loading
     *
     * @return ClassMetadata|null
     */
    protected function onNotFoundMetadata(string $className)
    {
        return null;
    }

    /**
     * Actually loads the metadata from the underlying metadata.
     *
     * @param array<int, string> $nonSuperclassParents All parent class names that are not marked as mapped superclasses.
     *
     * @return void
     */
    abstract protected function doLoadMetadata(
        ClassMetadata $class,
        ?ClassMetadata $parent,
        bool $rootEntityFound,
        array $nonSuperclassParents
    );

    /**
     * Creates a new ClassMetadata instance for the given class name.
     *
     * @return ClassMetadata
     */
    abstract protected function newClassMetadataInstance(string $className);

    /**
     * {@inheritDoc}
     */
    public function isTransient(string $class)
    {
        if (! $this->initialized) {
            $this->initialize();
        }

        // Check for namespace alias
        if (strpos($class, ':') !== false) {
            [$namespaceAlias, $simpleClassName] = explode(':', $class, 2);

            $class = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
        }

        return $this->getDriver()->isTransient($class);
    }

    /**
     * Sets the reflectionService.
     *
     * @return void
     */
    public function setReflectionService(ReflectionService $reflectionService)
    {
        $this->reflectionService = $reflectionService;
    }

    /**
     * Gets the reflection service associated with this metadata factory.
     *
     * @return ReflectionService
     */
    public function getReflectionService()
    {
        if ($this->reflectionService === null) {
            $this->reflectionService = new RuntimeReflectionService();
        }

        return $this->reflectionService;
    }

    /**
     * Gets the real class name of a class name that could be a proxy.
     */
    private function getRealClass(string $class) : string
    {
        $pos = strrpos($class, '\\' . Proxy::MARKER . '\\');

        if ($pos === false) {
            return $class;
        }

        return substr($class, $pos + Proxy::MARKER_LENGTH + 2);
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Doctrine\Persistence\Mapping;
6
7		use Doctrine\Common\Cache\Cache;
8		use Doctrine\Persistence\Mapping\Driver\MappingDriver;
9		use Doctrine\Persistence\Proxy;
10		use ReflectionException;
11		use function array_reverse;
12		use function array_unshift;
13		use function explode;
14		use function strpos;
15		use function strrpos;
16		use function substr;
17
18		/**
19		* The ClassMetadataFactory is used to create ClassMetadata objects that contain all the
20		* metadata mapping informations of a class which describes how a class should be mapped
21		* to a relational database.
22		*
23		* This class was abstracted from the ORM ClassMetadataFactory.
24		*/
25		abstract class AbstractClassMetadataFactory implements ClassMetadataFactory
26		{
27		/**
28		* Salt used by specific Object Manager implementation.
29		*
30		* @var string
31		*/
32		protected $cacheSalt = '$CLASSMETADATA';
33
34		/** @var Cache\|null */
35		private $cacheDriver;
36
37		/** @var array<string, ClassMetadata> */
38		private $loadedMetadata = [];
39
40		/** @var bool */
41		protected $initialized = false;
42
43		/** @var ReflectionService\|null */
44		private $reflectionService = null;
45
46		/**
47		* Sets the cache driver used by the factory to cache ClassMetadata instances.
48		*
49		* @return void
50		*/
51	4	public function setCacheDriver(?Cache $cacheDriver = null)
52		{
53	4	$this->cacheDriver = $cacheDriver;
54	4	}
55
56		/**
57		* Gets the cache driver used by the factory to cache ClassMetadata instances.
58		*
59		* @return Cache\|null
60		*/
61	1	public function getCacheDriver()
62		{
63	1	return $this->cacheDriver;
64		}
65
66		/**
67		* Returns an array of all the loaded metadata currently in memory.
68		*
69		* @return ClassMetadata[]
70		*/
71		public function getLoadedMetadata()
72		{
73		return $this->loadedMetadata;
74		}
75
76		/**
77		* Forces the factory to load the metadata of all classes known to the underlying
78		* mapping driver.
79		*
80		* @return array<int, ClassMetadata> The ClassMetadata instances of all mapped classes.
81		*/
82		public function getAllMetadata()
83		{
84		if (! $this->initialized) {
85		$this->initialize();
86		}
87
88		$driver = $this->getDriver();
89		$metadata = [];
90		foreach ($driver->getAllClassNames() as $className) {
91		$metadata[] = $this->getMetadataFor($className);
92		}
93
94		return $metadata;
95		}
96
97		/**
98		* Lazy initialization of this stuff, especially the metadata driver,
99		* since these are not needed at all when a metadata cache is active.
100		*
101		* @return void
102		*/
103		abstract protected function initialize();
104
105		/**
106		* Gets the fully qualified class-name from the namespace alias.
107		*
108		* @return string
109		*/
110		abstract protected function getFqcnFromAlias(
111		string $namespaceAlias,
112		string $simpleClassName
113		);
114
115		/**
116		* Returns the mapping driver implementation.
117		*
118		* @return MappingDriver
119		*/
120		abstract protected function getDriver();
121
122		/**
123		* Wakes up reflection after ClassMetadata gets unserialized from cache.
124		*
125		* @return void
126		*/
127		abstract protected function wakeupReflection(
128		ClassMetadata $class,
129		ReflectionService $reflService
130		);
131
132		/**
133		* Initializes Reflection after ClassMetadata was constructed.
134		*
135		* @return void
136		*/
137		abstract protected function initializeReflection(
138		ClassMetadata $class,
139		ReflectionService $reflService
140		);
141
142		/**
143		* Checks whether the class metadata is an entity.
144		*
145		* This method should return false for mapped superclasses or embedded classes.
146		*
147		* @return bool
148		*/
149		abstract protected function isEntity(ClassMetadata $class);
150
151		/**
152		* Gets the class metadata descriptor for a class.
153		*
154		* @param string $className The name of the class.
155		*
156		* @return ClassMetadata
157		*
158		* @throws ReflectionException
159		* @throws MappingException
160		*/
161	10	public function getMetadataFor(string $className)
162		{
163	10	if (isset($this->loadedMetadata[$className])) {
164		return $this->loadedMetadata[$className];
165		}
166
167		// Check for namespace alias
168	10	if (strpos($className, ':') !== false) {
169	2	[$namespaceAlias, $simpleClassName] = explode(':', $className, 2);
170
171	2	$realClassName = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
172		} else {
173	8	$realClassName = $this->getRealClass($className);
174		}
175
176	10	if (isset($this->loadedMetadata[$realClassName])) {
177		// We do not have the alias name in the map, include it
178		return $this->loadedMetadata[$className] = $this->loadedMetadata[$realClassName];
179		}
180
181	10	$loadingException = null;
		0 ignored issues – show Unused Code introduced 2018-06-06 16:47 UTC by Report Bug Copy Issue Report The assignment to `$loadingException` is dead and can be removed. Loading history...
182
183		try {
184	10	if ($this->cacheDriver !== null) {
185	3	$cached = $this->cacheDriver->fetch($realClassName . $this->cacheSalt);
186
187	3	if ($cached instanceof ClassMetadata) {
188	1	$this->loadedMetadata[$realClassName] = $cached;
189
190	1	$this->wakeupReflection($cached, $this->getReflectionService());
191		} else {
192	3	foreach ($this->loadMetadata($realClassName) as $loadedClassName) {
193	1	$this->cacheDriver->save(
194	1	$loadedClassName . $this->cacheSalt,
195	1	$this->loadedMetadata[$loadedClassName]
196		);
197		}
198		}
199		} else {
200	9	$this->loadMetadata($realClassName);
201		}
202	5	} catch (MappingException $loadingException) {
203	5	$fallbackMetadataResponse = $this->onNotFoundMetadata($realClassName);
		0 ignored issues – show Bug introduced 2019-01-02 02:36 UTC by Report Bug Copy Issue Report Are you sure the assignment to `$fallbackMetadataResponse` is correct as `$this->onNotFoundMetadata($realClassName)` targeting `Doctrine\Persistence\Map...y::onNotFoundMetadata()` seems to always return null. This check looks for function or method calls that always return null and whose return value is assigned to a variable. class A { function getObject() { return null; } } $a = new A(); $object = $a->getObject(); The method `getObject()` can return nothing but null, so it makes no sense to assign that value to a variable. The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes. Loading history...
204
205	5	if ($fallbackMetadataResponse === null) {
		0 ignored issues – show introduced 2019-04-18 19:52 UTC by Report Bug Copy Issue Report The condition `$fallbackMetadataResponse === null` is always `true`. Loading history...
206	3	throw $loadingException;
207		}
208
209	2	$this->loadedMetadata[$realClassName] = $fallbackMetadataResponse;
210		}
211
212	7	if ($className !== $realClassName) {
213		// We do not have the alias name in the map, include it
214	1	$this->loadedMetadata[$className] = $this->loadedMetadata[$realClassName];
215		}
216
217	7	return $this->loadedMetadata[$className];
218		}
219
220		/**
221		* Checks whether the factory has the metadata for a class loaded already.
222		*
223		* @return bool TRUE if the metadata of the class in question is already loaded, FALSE otherwise.
224		*/
225	3	public function hasMetadataFor(string $className)
226		{
227	3	return isset($this->loadedMetadata[$className]);
228		}
229
230		/**
231		* Sets the metadata descriptor for a specific class.
232		*
233		* NOTE: This is only useful in very special cases, like when generating proxy classes.
234		*
235		* @return void
236		*/
237		public function setMetadataFor(string $className, ClassMetadata $class)
238		{
239		$this->loadedMetadata[$className] = $class;
240		}
241
242		/**
243		* Gets an array of parent classes for the given entity class.
244		*
245		* @return array<int, string>
246		*/
247	9	protected function getParentClasses(string $name)
248		{
249		// Collect parent classes, ignoring transient (not-mapped) classes.
250	9	$parentClasses = [];
		0 ignored issues – show Unused Code introduced 2019-04-18 19:01 UTC by Report Bug Copy Issue Report The assignment to `$parentClasses` is dead and can be removed. Loading history...
251
252	9	$parentClasses = $this->getReflectionService()
253	9	->getParentClasses($name);
254
255	4	foreach (array_reverse($parentClasses) as $parentClass) {
256	3	if ($this->getDriver()->isTransient($parentClass)) {
257		continue;
258		}
259
260	3	$parentClasses[] = $parentClass;
261		}
262
263	4	return $parentClasses;
264		}
265
266		/**
267		* Loads the metadata of the class in question and all it's ancestors whose metadata
268		* is still not loaded.
269		*
270		* Important: The class $name does not necessarily exist at this point here.
271		* Scenarios in a code-generation setup might have access to XML/YAML
272		* Mapping files without the actual PHP code existing here. That is why the
273		* {@see Doctrine\Persistence\Mapping\ReflectionService} interface
274		* should be used for reflection.
275		*
276		* @param string $name The name of the class for which the metadata should get loaded.
277		*
278		* @return array<int, string>
279		*/
280	9	protected function loadMetadata(string $name)
281		{
282	9	if (! $this->initialized) {
283	9	$this->initialize();
284		}
285
286	9	$loaded = [];
287
288	9	$parentClasses = $this->getParentClasses($name);
289	4	$parentClasses[] = $name;
290
291		// Move down the hierarchy of parent classes, starting from the topmost class
292	4	$parent = null;
293	4	$rootEntityFound = false;
294	4	$visited = [];
295	4	$reflService = $this->getReflectionService();
296
297	4	foreach ($parentClasses as $className) {
298	4	if (isset($this->loadedMetadata[$className])) {
299	3	$parent = $this->loadedMetadata[$className];
300
301	3	if ($this->isEntity($parent)) {
302	3	$rootEntityFound = true;
303
304	3	array_unshift($visited, $className);
305		}
306
307	3	continue;
308		}
309
310	4	$class = $this->newClassMetadataInstance($className);
311	4	$this->initializeReflection($class, $reflService);
312
313	4	$this->doLoadMetadata($class, $parent, $rootEntityFound, $visited);
314
315	4	$this->loadedMetadata[$className] = $class;
316
317	4	$parent = $class;
318
319	4	if ($this->isEntity($class)) {
320	4	$rootEntityFound = true;
321
322	4	array_unshift($visited, $className);
323		}
324
325	4	$this->wakeupReflection($class, $reflService);
326
327	4	$loaded[] = $className;
328		}
329
330	4	return $loaded;
331		}
332
333		/**
334		* Provides a fallback hook for loading metadata when loading failed due to reflection/mapping exceptions
335		*
336		* Override this method to implement a fallback strategy for failed metadata loading
337		*
338		* @return ClassMetadata\|null
339		*/
340		protected function onNotFoundMetadata(string $className)
341		{
342		return null;
343		}
344
345		/**
346		* Actually loads the metadata from the underlying metadata.
347		*
348		* @param array<int, string> $nonSuperclassParents All parent class names that are not marked as mapped superclasses.
349		*
350		* @return void
351		*/
352		abstract protected function doLoadMetadata(
353		ClassMetadata $class,
354		?ClassMetadata $parent,
355		bool $rootEntityFound,
356		array $nonSuperclassParents
357		);
358
359		/**
360		* Creates a new ClassMetadata instance for the given class name.
361		*
362		* @return ClassMetadata
363		*/
364		abstract protected function newClassMetadataInstance(string $className);
365
366		/**
367		* {@inheritDoc}
368		*/
369		public function isTransient(string $class)
370		{
371		if (! $this->initialized) {
372		$this->initialize();
373		}
374
375		// Check for namespace alias
376		if (strpos($class, ':') !== false) {
377		[$namespaceAlias, $simpleClassName] = explode(':', $class, 2);
378
379		$class = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
380		}
381
382		return $this->getDriver()->isTransient($class);
383		}
384
385		/**
386		* Sets the reflectionService.
387		*
388		* @return void
389		*/
390		public function setReflectionService(ReflectionService $reflectionService)
391		{
392		$this->reflectionService = $reflectionService;
393		}
394
395		/**
396		* Gets the reflection service associated with this metadata factory.
397		*
398		* @return ReflectionService
399		*/
400	10	public function getReflectionService()
401		{
402	10	if ($this->reflectionService === null) {
403	10	$this->reflectionService = new RuntimeReflectionService();
404		}
405
406	10	return $this->reflectionService;
407		}
408
409		/**
410		* Gets the real class name of a class name that could be a proxy.
411		*/
412	8	private function getRealClass(string $class) : string
413		{
414	8	$pos = strrpos($class, '\\' . Proxy::MARKER . '\\');
415
416	8	if ($pos === false) {
417	8	return $class;
418		}
419
420		return substr($class, $pos + Proxy::MARKER_LENGTH + 2);
421		}
422		}
423

doctrine / persistence

AbstractClassMetadataFactory::hasMetadataFor() A last analyzed 2020-05-14 16:10 UTC

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AbstractClassMetadataFactory::hasMetadataFor() A
last analyzed 2020-05-14 16:10 UTC