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<?php
/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\Common\Persistence\Mapping;
use Doctrine\Common\Cache\Cache,
Doctrine\Common\Util\ClassUtils;
/**
* 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 <kontakt@beberlei.de>
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Jonathan Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
*/
abstract class AbstractClassMetadataFactory implements ClassMetadataFactory
{
/**
* Salt used by specific Object Manager implementation.
*
* @var string
*/
protected $cacheSalt = "\$CLASSMETADATA";
/**
* @var \Doctrine\Common\Cache\Cache
*/
private $cacheDriver;
/**
* @var array
*/
private $loadedMetadata = array();
/**
* @var bool
*/
protected $initialized = false;
/**
* @var ReflectionService
*/
private $reflectionService;
/**
* Sets the cache driver used by the factory to cache ClassMetadata instances.
*
* @param Doctrine\Common\Cache\Cache $cacheDriver
*/
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
*/
public function getCacheDriver()
{
return $this->cacheDriver;
}
/**
* Return an array of all the loaded metadata currently in memory.
*
* @return array
*/
public function getLoadedMetadata()
{
return $this->loadedMetadata;
}
/**
* Forces the factory to load the metadata of all or a subset of classes known to the underlying
* mapping driver.
*
* @param array $classNames An array that will be used as a filter
*
* @return array The ClassMetadata instances of all mapped classes.
*/
public function getAllMetadata(array $classNames = array())
{
if ( ! $this->initialized) {
$this->initialize();
}
$driver = $this->getDriver();
$metadata = array();
foreach ($driver->getAllClassNames($classNames) 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();
/**
* Get the fully qualified class-name from the namespace alias.
*
* @param string $namespaceAlias
* @param string $simpleClassName
* @return string
*/
abstract protected function getFqcnFromAlias($namespaceAlias, $simpleClassName);
/**
* Return the mapping driver implementation.
*
* @return \Doctrine\Common\Persistence\Mapping\Driver\MappingDriver
*/
abstract protected function getDriver();
/**
* Wakeup reflection after ClassMetadata gets unserialized from cache.
*
* @param ClassMetadata $class
* @param ReflectionService $reflService
* @return void
*/
abstract protected function wakeupReflection(ClassMetadata $class, ReflectionService $reflService);
/**
* Initialize 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 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 $className The name of the class.
* @return \Doctrine\Common\Persistence\Mapping\ClassMetadata
*/
public function getMetadataFor($className)
{
if (isset($this->loadedMetadata[$className])) {
return $this->loadedMetadata[$className];
}
$realClassName = $className;
// Check for namespace alias
if (strpos($className, ':') !== false) {
list($namespaceAlias, $simpleClassName) = explode(':', $className);
$realClassName = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
} else {
$realClassName = ClassUtils::getRealClass($realClassName);
}
if (isset($this->loadedMetadata[$realClassName])) {
// We do not have the alias name in the map, include it
$this->loadedMetadata[$className] = $this->loadedMetadata[$realClassName];
return $this->loadedMetadata[$realClassName];
}
if ($this->cacheDriver) {
if (($cached = $this->cacheDriver->fetch($realClassName . $this->cacheSalt)) !== false) {
$this->loadedMetadata[$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);
}
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 $class
*/
public function setMetadataFor($className, $class)
{
$this->loadedMetadata[$className] = $class;
}
/**
* Get array of parent classes for the given entity class
*
* @param string $name
* @return array $parentClasses
*/
protected function getParentClasses($name)
{
// Collect parent classes, ignoring transient (not-mapped) classes.
$parentClasses = array();
foreach (array_reverse($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.
*
* @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 = array();
$parentClasses = $this->getParentClasses($name);
$parentClasses[] = $name;
// Move down the hierarchy of parent classes, starting from the topmost class
$parent = null;
$rootEntityFound = false;
$visited = array();
$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;
}
/**
* Actually load the metadata from the underlying metadata
*
* @param ClassMetadata $class
* @param ClassMetadata|null $parent
* @param bool $rootEntityFound
* @param array $nonSuperclassParents classnames all parent classes that are not marked as mapped superclasses
* @return void
*/
abstract protected function doLoadMetadata($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);
/**
* Check if this class is mapped by this Object Manager + ClassMetadata configuration
*
* @param $class
* @return bool
*/
public function isTransient($class)
{
if ( ! $this->initialized) {
$this->initialize();
}
// Check for namespace alias
if (strpos($class, ':') !== false) {
list($namespaceAlias, $simpleClassName) = explode(':', $class);
$class = $this->getFqcnFromAlias($namespaceAlias, $simpleClassName);
}
return $this->getDriver()->isTransient($class);
}
/**
* Set reflectionService.
*
* @param ReflectionService $reflectionService
*/
public function setReflectionService(ReflectionService $reflectionService)
{
$this->reflectionService = $reflectionService;
}
/**
* Get the reflection service associated with this metadata factory.
*
* @return ReflectionService
*/
public function getReflectionService()
{
if ($this->reflectionService === null) {
$this->reflectionService = new RuntimeReflectionService();
}
return $this->reflectionService;
}
}
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