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<?php |
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/* |
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* Copyright 2011 Johannes M. Schmitt <[email protected]> |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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namespace Metadata; |
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use Metadata\Driver\AdvancedDriverInterface; |
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use Metadata\Driver\DriverInterface; |
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use Metadata\Cache\CacheInterface; |
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class MetadataFactory implements AdvancedMetadataFactoryInterface |
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{ |
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private $driver; |
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private $cache; |
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private $loadedMetadata = array(); |
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private $loadedClassMetadata = array(); |
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private $hierarchyMetadataClass; |
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private $includeInterfaces = false; |
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private $debug; |
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/** |
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* @param DriverInterface $driver |
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* @param string $hierarchyMetadataClass |
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* @param boolean $debug |
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*/ |
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public function __construct(DriverInterface $driver, $hierarchyMetadataClass = 'Metadata\ClassHierarchyMetadata', $debug = false) |
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{ |
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$this->driver = $driver; |
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$this->hierarchyMetadataClass = $hierarchyMetadataClass; |
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$this->debug = (Boolean) $debug; |
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} |
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/** |
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* @param boolean $include |
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*/ |
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public function setIncludeInterfaces($include) |
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{ |
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$this->includeInterfaces = (Boolean) $include; |
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} |
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public function setCache(CacheInterface $cache) |
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{ |
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$this->cache = $cache; |
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} |
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/** |
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* @param string $className |
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* |
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* @return ClassHierarchyMetadata|MergeableClassMetadata|null |
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*/ |
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public function getMetadataForClass($className) |
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{ |
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if (isset($this->loadedMetadata[$className])) { |
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return $this->filterNullMetadata($this->loadedMetadata[$className]); |
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} |
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$metadata = null; |
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foreach ($this->getClassHierarchy($className) as $class) { |
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if (isset($this->loadedClassMetadata[$name = $class->getName()])) { |
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if (null !== $classMetadata = $this->filterNullMetadata($this->loadedClassMetadata[$name])) { |
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$this->addClassMetadata($metadata, $classMetadata); |
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} |
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continue; |
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} |
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// check the cache |
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if (null !== $this->cache) { |
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if (($classMetadata = $this->cache->loadClassMetadataFromCache($class)) instanceof NullMetadata) { |
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$this->loadedClassMetadata[$name] = $classMetadata; |
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continue; |
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} |
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if (null !== $classMetadata) { |
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if ( ! $classMetadata instanceof ClassMetadata) { |
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throw new \LogicException(sprintf('The cache must return instances of ClassMetadata, but got %s.', var_export($classMetadata, true))); |
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} |
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if ($this->debug && !$classMetadata->isFresh()) { |
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$this->cache->evictClassMetadataFromCache($classMetadata->reflection); |
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} else { |
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$this->loadedClassMetadata[$name] = $classMetadata; |
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$this->addClassMetadata($metadata, $classMetadata); |
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continue; |
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} |
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} |
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} |
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// load from source |
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if (null !== $classMetadata = $this->driver->loadMetadataForClass($class)) { |
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$this->loadedClassMetadata[$name] = $classMetadata; |
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$this->addClassMetadata($metadata, $classMetadata); |
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if (null !== $this->cache) { |
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$this->cache->putClassMetadataInCache($classMetadata); |
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} |
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continue; |
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} |
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if (null !== $this->cache && !$this->debug) { |
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$this->cache->putClassMetadataInCache(new NullMetadata($class->getName())); |
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} |
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} |
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if (null === $metadata) { |
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$metadata = new NullMetadata($className); |
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} |
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return $this->filterNullMetadata($this->loadedMetadata[$className] = $metadata); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getAllClassNames() |
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{ |
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if (!$this->driver instanceof AdvancedDriverInterface) { |
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throw new \RuntimeException( |
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sprintf('Driver "%s" must be an instance of "AdvancedDriverInterface".', get_class($this->driver)) |
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); |
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} |
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return $this->driver->getAllClassNames(); |
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} |
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/** |
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* @param ClassMetadata|null $metadata |
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* @param ClassMetadata $toAdd |
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*/ |
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private function addClassMetadata(&$metadata, $toAdd) |
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{ |
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if ($toAdd instanceof MergeableInterface) { |
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if (null === $metadata) { |
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$metadata = clone $toAdd; |
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} else { |
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$metadata->merge($toAdd); |
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} |
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} else { |
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if (null === $metadata) { |
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$metadata = new $this->hierarchyMetadataClass; |
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} |
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$metadata->addClassMetadata($toAdd); |
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} |
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} |
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/** |
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* @param string $class |
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*/ |
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private function getClassHierarchy($class) |
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{ |
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$classes = array(); |
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$refl = new \ReflectionClass($class); |
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do { |
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$classes[] = $refl; |
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$refl = $refl->getParentClass(); |
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} while (false !== $refl); |
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$classes = array_reverse($classes, false); |
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if (!$this->includeInterfaces) { |
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return $classes; |
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} |
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$addedInterfaces = array(); |
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$newHierarchy = array(); |
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foreach ($classes as $class) { |
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foreach ($class->getInterfaces() as $interface) { |
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if (isset($addedInterfaces[$interface->getName()])) { |
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continue; |
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} |
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$addedInterfaces[$interface->getName()] = true; |
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$newHierarchy[] = $interface; |
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} |
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$newHierarchy[] = $class; |
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} |
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return $newHierarchy; |
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} |
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/** |
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* @param NullMetadata|null $metadata |
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201
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* |
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* @return ClassMetadata|null |
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203
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*/ |
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204
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private function filterNullMetadata($metadata = null) |
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205
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{ |
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return !$metadata instanceof NullMetadata ? $metadata : null; |
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} |
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} |
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schmittjoh /
metadata
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