AbstractClassMetadataFactory::loadMetadata() - Code Metrics - Inspection of "First commit of Doctrine Persistence project." - doctrine/persistence - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Pull Request — master (#1)

by Jonathan

created 2018-06-06 19:16 UTC

AbstractClassMetadataFactory::loadMetadata() B

↳ Parent: AbstractClassMetadataFactory

Complexity

Conditions	6
Paths	10

Size

Total Lines	46
Code Lines	27

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	23
CRAP Score	6.205

Importance

Changes

Metric	Value
dl	0
loc	46
ccs	23
cts	28
cp	0.8214
rs	8.4751
c	0
b	0
f	0
cc	6
eloc	27
nc	10
nop	1
crap	6.205

<?php
namespace Doctrine\Common\Persistence\Mapping;

use Doctrine\Common\Cache\Cache;
use Doctrine\Common\Util\ClassUtils;
use ReflectionException;

/**
 * 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.
 *
 * @since  2.2
 * @author Benjamin Eberlei <[email protected]>
 * @author Guilherme Blanco <[email protected]>
 * @author Jonathan Wage <[email protected]>
 * @author Roman Borschel <[email protected]>
 */
abstract class AbstractClassMetadataFactory implements ClassMetadataFactory
{
    /**
     * Salt used by specific Object Manager implementation.
     *
     * @var string
     */
    protected $cacheSalt = '$CLASSMETADATA';

    /**
     * @var \Doctrine\Common\Cache\Cache|null
     */
    private $cacheDriver;

    /**
     * @var 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.
     *
     * @param \Doctrine\Common\Cache\Cache $cacheDriver
     *
     * @return void
     */
    public function setCacheDriver(Cache $cacheDriver = null)
    {
        $this->cacheDriver = $cacheDriver;
    }

    /**
     * Gets the cache driver used by the factory to cache ClassMetadata instances.
     *
     * @return \Doctrine\Common\Cache\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 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.
     *
     * @param string $namespaceAlias
     * @param string $simpleClassName
     *
     * @return string
     */
    abstract protected function getFqcnFromAlias($namespaceAlias, $simpleClassName);

    /**
     * Returns the mapping driver implementation.
     *
     * @return \Doctrine\Common\Persistence\Mapping\Driver\MappingDriver
     */
    abstract protected function getDriver();

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

    /**
     * Initializes Reflection after ClassMetadata was constructed.
     *
     * @param ClassMetadata     $class
     * @param ReflectionService $reflService
     *
     * @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.
     *
     * @param ClassMetadata $class
     *
     * @return boolean
     */
    abstract protected function isEntity(ClassMetadata $class);

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

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

            $realClassName = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
        } else {
            $realClassName = ClassUtils::getRealClass($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) {
                $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],
                            null
                        );
                    }
                }
            } else {
                $this->loadMetadata($realClassName);
            }
        } catch (MappingException $loadingException) {
            if ( ! $fallbackMetadataResponse = $this->onNotFoundMetadata($realClassName)) {
class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
$object = $a->getObject();
                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.
     *
     * @param string $className
     *
     * @return boolean TRUE if the metadata of the class in question is already loaded, FALSE otherwise.
     */
    public function hasMetadataFor($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.
     *
     * @param string        $className
     * @param ClassMetadata $class
     *
     * @return void
     */
    public function setMetadataFor($className, $class)
    {
        $this->loadedMetadata[$className] = $class;
    }

    /**
     * Gets an array of parent classes for the given entity class.
     *
     * @param string $name
     *
     * @return array
     */
    protected function getParentClasses($name)
    {
        // Collect parent classes, ignoring transient (not-mapped) classes.
        $parentClasses = [];
        foreach (array_reverse($this->getReflectionService()->getParentClasses($name)) as $parentClass) {
            if ( ! $this->getDriver()->isTransient($parentClass)) {
                $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\Common\Persistence\Mapping\ReflectionService} interface
     * should be used for reflection.
     *
     * @param string $name The name of the class for which the metadata should get loaded.
     *
     * @return array
     */
    protected function loadMetadata($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
     *
     * @param string $className
     *
     * @return \Doctrine\Common\Persistence\Mapping\ClassMetadata|null
     */
    protected function onNotFoundMetadata($className)
    {
        return null;
    }

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

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

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

        // Check for namespace alias
        if (strpos($class, ':') !== false) {
            list($namespaceAlias, $simpleClassName) = explode(':', $class, 2);
            $class                                  = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
        }

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

    /**
     * Sets the reflectionService.
     *
     * @param ReflectionService $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;
    }
}


1		<?php
2		namespace Doctrine\Common\Persistence\Mapping;
3
4		use Doctrine\Common\Cache\Cache;
5		use Doctrine\Common\Util\ClassUtils;
6		use ReflectionException;
7
8		/**
9		* The ClassMetadataFactory is used to create ClassMetadata objects that contain all the
10		* metadata mapping informations of a class which describes how a class should be mapped
11		* to a relational database.
12		*
13		* This class was abstracted from the ORM ClassMetadataFactory.
14		*
15		* @since 2.2
16		* @author Benjamin Eberlei <[email protected]>
17		* @author Guilherme Blanco <[email protected]>
18		* @author Jonathan Wage <[email protected]>
19		* @author Roman Borschel <[email protected]>
20		*/
21		abstract class AbstractClassMetadataFactory implements ClassMetadataFactory
22		{
23		/**
24		* Salt used by specific Object Manager implementation.
25		*
26		* @var string
27		*/
28		protected $cacheSalt = '$CLASSMETADATA';
29
30		/**
31		* @var \Doctrine\Common\Cache\Cache\|null
32		*/
33		private $cacheDriver;
34
35		/**
36		* @var ClassMetadata[]
37		*/
38		private $loadedMetadata = [];
39
40		/**
41		* @var bool
42		*/
43		protected $initialized = false;
44
45		/**
46		* @var ReflectionService\|null
47		*/
48		private $reflectionService = null;
49
50		/**
51		* Sets the cache driver used by the factory to cache ClassMetadata instances.
52		*
53		* @param \Doctrine\Common\Cache\Cache $cacheDriver
54		*
55		* @return void
56		*/
57	4	public function setCacheDriver(Cache $cacheDriver = null)
58		{
59	4	$this->cacheDriver = $cacheDriver;
60	4	}
61
62		/**
63		* Gets the cache driver used by the factory to cache ClassMetadata instances.
64		*
65		* @return \Doctrine\Common\Cache\Cache\|null
66		*/
67	1	public function getCacheDriver()
68		{
69	1	return $this->cacheDriver;
70		}
71
72		/**
73		* Returns an array of all the loaded metadata currently in memory.
74		*
75		* @return ClassMetadata[]
76		*/
77		public function getLoadedMetadata()
78		{
79		return $this->loadedMetadata;
80		}
81
82		/**
83		* Forces the factory to load the metadata of all classes known to the underlying
84		* mapping driver.
85		*
86		* @return array The ClassMetadata instances of all mapped classes.
87		*/
88		public function getAllMetadata()
89		{
90		if ( ! $this->initialized) {
91		$this->initialize();
92		}
93
94		$driver = $this->getDriver();
95		$metadata = [];
96		foreach ($driver->getAllClassNames() as $className) {
97		$metadata[] = $this->getMetadataFor($className);
98		}
99
100		return $metadata;
101		}
102
103		/**
104		* Lazy initialization of this stuff, especially the metadata driver,
105		* since these are not needed at all when a metadata cache is active.
106		*
107		* @return void
108		*/
109		abstract protected function initialize();
110
111		/**
112		* Gets the fully qualified class-name from the namespace alias.
113		*
114		* @param string $namespaceAlias
115		* @param string $simpleClassName
116		*
117		* @return string
118		*/
119		abstract protected function getFqcnFromAlias($namespaceAlias, $simpleClassName);
120
121		/**
122		* Returns the mapping driver implementation.
123		*
124		* @return \Doctrine\Common\Persistence\Mapping\Driver\MappingDriver
125		*/
126		abstract protected function getDriver();
127
128		/**
129		* Wakes up reflection after ClassMetadata gets unserialized from cache.
130		*
131		* @param ClassMetadata $class
132		* @param ReflectionService $reflService
133		*
134		* @return void
135		*/
136		abstract protected function wakeupReflection(ClassMetadata $class, ReflectionService $reflService);
137
138		/**
139		* Initializes Reflection after ClassMetadata was constructed.
140		*
141		* @param ClassMetadata $class
142		* @param ReflectionService $reflService
143		*
144		* @return void
145		*/
146		abstract protected function initializeReflection(ClassMetadata $class, ReflectionService $reflService);
147
148		/**
149		* Checks whether the class metadata is an entity.
150		*
151		* This method should return false for mapped superclasses or embedded classes.
152		*
153		* @param ClassMetadata $class
154		*
155		* @return boolean
156		*/
157		abstract protected function isEntity(ClassMetadata $class);
158
159		/**
160		* Gets the class metadata descriptor for a class.
161		*
162		* @param string $className The name of the class.
163		*
164		* @return ClassMetadata
165		*
166		* @throws ReflectionException
167		* @throws MappingException
168		*/
169	10	public function getMetadataFor($className)
170		{
171	10	if (isset($this->loadedMetadata[$className])) {
172		return $this->loadedMetadata[$className];
173		}
174
175		// Check for namespace alias
176	10	if (strpos($className, ':') !== false) {
177	2	list($namespaceAlias, $simpleClassName) = explode(':', $className, 2);
178
179	2	$realClassName = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
180		} else {
181	8	$realClassName = ClassUtils::getRealClass($className);
182		}
183
184	10	if (isset($this->loadedMetadata[$realClassName])) {
185		// We do not have the alias name in the map, include it
186		return $this->loadedMetadata[$className] = $this->loadedMetadata[$realClassName];
187		}
188
189	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...
190
191		try {
192	10	if ($this->cacheDriver) {
193	3	$cached = $this->cacheDriver->fetch($realClassName . $this->cacheSalt);
194	3	if ($cached instanceof ClassMetadata) {
195	1	$this->loadedMetadata[$realClassName] = $cached;
196
197	1	$this->wakeupReflection($cached, $this->getReflectionService());
198		} else {
199	2	foreach ($this->loadMetadata($realClassName) as $loadedClassName) {
200	1	$this->cacheDriver->save(
201	1	$loadedClassName . $this->cacheSalt,
202	1	$this->loadedMetadata[$loadedClassName],
203	2	null
204		);
205		}
206		}
207		} else {
208	9	$this->loadMetadata($realClassName);
209		}
210	5	} catch (MappingException $loadingException) {
211	5	if ( ! $fallbackMetadataResponse = $this->onNotFoundMetadata($realClassName)) {
		0 ignored issues – show Bug introduced 2018-06-06 16:47 UTC by Report Bug Copy Issue Report Are you sure the assignment to `$fallbackMetadataResponse` is correct as `$this->onNotFoundMetadata($realClassName)` targeting `Doctrine\Common\Persiste...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...
212	3	throw $loadingException;
213		}
214
215	2	$this->loadedMetadata[$realClassName] = $fallbackMetadataResponse;
216		}
217
218	7	if ($className !== $realClassName) {
219		// We do not have the alias name in the map, include it
220	1	$this->loadedMetadata[$className] = $this->loadedMetadata[$realClassName];
221		}
222
223	7	return $this->loadedMetadata[$className];
224		}
225
226		/**
227		* Checks whether the factory has the metadata for a class loaded already.
228		*
229		* @param string $className
230		*
231		* @return boolean TRUE if the metadata of the class in question is already loaded, FALSE otherwise.
232		*/
233	3	public function hasMetadataFor($className)
234		{
235	3	return isset($this->loadedMetadata[$className]);
236		}
237
238		/**
239		* Sets the metadata descriptor for a specific class.
240		*
241		* NOTE: This is only useful in very special cases, like when generating proxy classes.
242		*
243		* @param string $className
244		* @param ClassMetadata $class
245		*
246		* @return void
247		*/
248		public function setMetadataFor($className, $class)
249		{
250		$this->loadedMetadata[$className] = $class;
251		}
252
253		/**
254		* Gets an array of parent classes for the given entity class.
255		*
256		* @param string $name
257		*
258		* @return array
259		*/
260	9	protected function getParentClasses($name)
261		{
262		// Collect parent classes, ignoring transient (not-mapped) classes.
263	9	$parentClasses = [];
264	9	foreach (array_reverse($this->getReflectionService()->getParentClasses($name)) as $parentClass) {
265	3	if ( ! $this->getDriver()->isTransient($parentClass)) {
266	3	$parentClasses[] = $parentClass;
267		}
268		}
269	4	return $parentClasses;
270		}
271
272		/**
273		* Loads the metadata of the class in question and all it's ancestors whose metadata
274		* is still not loaded.
275		*
276		* Important: The class $name does not necessarily exist at this point here.
277		* Scenarios in a code-generation setup might have access to XML/YAML
278		* Mapping files without the actual PHP code existing here. That is why the
279		* {@see Doctrine\Common\Persistence\Mapping\ReflectionService} interface
280		* should be used for reflection.
281		*
282		* @param string $name The name of the class for which the metadata should get loaded.
283		*
284		* @return array
285		*/
286	9	protected function loadMetadata($name)
287		{
288	9	if ( ! $this->initialized) {
289	9	$this->initialize();
290		}
291
292	9	$loaded = [];
293
294	9	$parentClasses = $this->getParentClasses($name);
295	4	$parentClasses[] = $name;
296
297		// Move down the hierarchy of parent classes, starting from the topmost class
298	4	$parent = null;
299	4	$rootEntityFound = false;
300	4	$visited = [];
301	4	$reflService = $this->getReflectionService();
302	4	foreach ($parentClasses as $className) {
303	4	if (isset($this->loadedMetadata[$className])) {
304		$parent = $this->loadedMetadata[$className];
305		if ($this->isEntity($parent)) {
306		$rootEntityFound = true;
307		array_unshift($visited, $className);
308		}
309		continue;
310		}
311
312	4	$class = $this->newClassMetadataInstance($className);
313	4	$this->initializeReflection($class, $reflService);
314
315	4	$this->doLoadMetadata($class, $parent, $rootEntityFound, $visited);
316
317	4	$this->loadedMetadata[$className] = $class;
318
319	4	$parent = $class;
320
321	4	if ($this->isEntity($class)) {
322	4	$rootEntityFound = true;
323	4	array_unshift($visited, $className);
324		}
325
326	4	$this->wakeupReflection($class, $reflService);
327
328	4	$loaded[] = $className;
329		}
330
331	4	return $loaded;
332		}
333
334		/**
335		* Provides a fallback hook for loading metadata when loading failed due to reflection/mapping exceptions
336		*
337		* Override this method to implement a fallback strategy for failed metadata loading
338		*
339		* @param string $className
340		*
341		* @return \Doctrine\Common\Persistence\Mapping\ClassMetadata\|null
342		*/
343		protected function onNotFoundMetadata($className)
344		{
345		return null;
346		}
347
348		/**
349		* Actually loads the metadata from the underlying metadata.
350		*
351		* @param ClassMetadata $class
352		* @param ClassMetadata\|null $parent
353		* @param bool $rootEntityFound
354		* @param array $nonSuperclassParents All parent class names
355		* that are not marked as mapped superclasses.
356		*
357		* @return void
358		*/
359		abstract protected function doLoadMetadata($class, $parent, $rootEntityFound, array $nonSuperclassParents);
360
361		/**
362		* Creates a new ClassMetadata instance for the given class name.
363		*
364		* @param string $className
365		*
366		* @return ClassMetadata
367		*/
368		abstract protected function newClassMetadataInstance($className);
369
370		/**
371		* {@inheritDoc}
372		*/
373		public function isTransient($class)
374		{
375		if ( ! $this->initialized) {
376		$this->initialize();
377		}
378
379		// Check for namespace alias
380		if (strpos($class, ':') !== false) {
381		list($namespaceAlias, $simpleClassName) = explode(':', $class, 2);
382		$class = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
383		}
384
385		return $this->getDriver()->isTransient($class);
386		}
387
388		/**
389		* Sets the reflectionService.
390		*
391		* @param ReflectionService $reflectionService
392		*
393		* @return void
394		*/
395		public function setReflectionService(ReflectionService $reflectionService)
396		{
397		$this->reflectionService = $reflectionService;
398		}
399
400		/**
401		* Gets the reflection service associated with this metadata factory.
402		*
403		* @return ReflectionService
404		*/
405	10	public function getReflectionService()
406		{
407	10	if ($this->reflectionService === null) {
408	10	$this->reflectionService = new RuntimeReflectionService();
409		}
410	10	return $this->reflectionService;
411		}
412		}
413

doctrine / persistence

Pull Request — master (#1)

AbstractClassMetadataFactory::loadMetadata() B

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