. */ namespace Doctrine\ORM\Proxy; use Doctrine\ORM\EntityManager, Doctrine\ORM\Mapping\ClassMetadata, Doctrine\ORM\Mapping\AssociationMapping; /** * This factory is used to create proxy objects for entities at runtime. * * @author Roman Borschel * @author Giorgio Sironi * @since 2.0 */ class ProxyFactory { /** The EntityManager this factory is bound to. */ private $_em; /** Whether to automatically (re)generate proxy classes. */ private $_autoGenerate; /** The namespace that contains all proxy classes. */ private $_proxyNamespace; /** The directory that contains all proxy classes. */ private $_proxyDir; /** * Initializes a new instance of the ProxyFactory class that is * connected to the given EntityManager. * * @param EntityManager $em The EntityManager the new factory works for. * @param string $proxyDir The directory to use for the proxy classes. It must exist. * @param string $proxyNs The namespace to use for the proxy classes. * @param boolean $autoGenerate Whether to automatically generate proxy classes. */ public function __construct(EntityManager $em, $proxyDir, $proxyNs, $autoGenerate = false) { if ( ! $proxyDir) { throw ProxyException::proxyDirectoryRequired(); } if ( ! $proxyNs) { throw ProxyException::proxyNamespaceRequired(); } $this->_em = $em; $this->_proxyDir = $proxyDir; $this->_autoGenerate = $autoGenerate; $this->_proxyNamespace = $proxyNs; } /** * Gets a reference proxy instance for the entity of the given type and identified by * the given identifier. * * @param string $className * @param mixed $identifier * @return object */ public function getProxy($className, $identifier) { $proxyClassName = str_replace('\\', '', $className) . 'Proxy'; $fqn = $this->_proxyNamespace . '\\' . $proxyClassName; if (! class_exists($fqn, false)) { $fileName = $this->_proxyDir . DIRECTORY_SEPARATOR . $proxyClassName . '.php'; if ($this->_autoGenerate) { $this->_generateProxyClass($this->_em->getClassMetadata($className), $proxyClassName, $fileName, self::$_proxyClassTemplate); } require $fileName; } if ( ! $this->_em->getMetadataFactory()->hasMetadataFor($fqn)) { $this->_em->getMetadataFactory()->setMetadataFor($fqn, $this->_em->getClassMetadata($className)); } $entityPersister = $this->_em->getUnitOfWork()->getEntityPersister($className); return new $fqn($entityPersister, $identifier); } /** * Generates proxy classes for all given classes. * * @param array $classes The classes (ClassMetadata instances) for which to generate proxies. * @param string $toDir The target directory of the proxy classes. If not specified, the * directory configured on the Configuration of the EntityManager used * by this factory is used. */ public function generateProxyClasses(array $classes, $toDir = null) { $proxyDir = $toDir ?: $this->_proxyDir; $proxyDir = rtrim($proxyDir, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR; foreach ($classes as $class) { /* @var $class ClassMetadata */ if ($class->isMappedSuperclass) { continue; } $proxyClassName = str_replace('\\', '', $class->name) . 'Proxy'; $proxyFileName = $proxyDir . $proxyClassName . '.php'; $this->_generateProxyClass($class, $proxyClassName, $proxyFileName, self::$_proxyClassTemplate); } } /** * Generates a proxy class file. * * @param $class * @param $originalClassName * @param $proxyClassName * @param $file The path of the file to write to. */ private function _generateProxyClass($class, $proxyClassName, $fileName, $file) { $methods = $this->_generateMethods($class); $sleepImpl = $this->_generateSleep($class); $cloneImpl = $class->reflClass->hasMethod('__clone') ? 'parent::__clone();' : ''; // hasMethod() checks case-insensitive $placeholders = array( '', '', '', '', '', '' ); if(substr($class->name, 0, 1) == "\\") { $className = substr($class->name, 1); } else { $className = $class->name; } $replacements = array( $this->_proxyNamespace, $proxyClassName, $className, $methods, $sleepImpl, $cloneImpl ); $file = str_replace($placeholders, $replacements, $file); file_put_contents($fileName, $file, LOCK_EX); } /** * Generates the methods of a proxy class. * * @param ClassMetadata $class * @return string The code of the generated methods. */ private function _generateMethods(ClassMetadata $class) { $methods = ''; foreach ($class->reflClass->getMethods() as $method) { /* @var $method ReflectionMethod */ if ($method->isConstructor() || in_array(strtolower($method->getName()), array("__sleep", "__clone"))) { continue; } if ($method->isPublic() && ! $method->isFinal() && ! $method->isStatic()) { $methods .= "\n" . ' public function '; if ($method->returnsReference()) { $methods .= '&'; } $methods .= $method->getName() . '('; $firstParam = true; $parameterString = $argumentString = ''; foreach ($method->getParameters() as $param) { if ($firstParam) { $firstParam = false; } else { $parameterString .= ', '; $argumentString .= ', '; } // We need to pick the type hint class too if (($paramClass = $param->getClass()) !== null) { $parameterString .= '\\' . $paramClass->getName() . ' '; } else if ($param->isArray()) { $parameterString .= 'array '; } if ($param->isPassedByReference()) { $parameterString .= '&'; } $parameterString .= '$' . $param->getName(); $argumentString .= '$' . $param->getName(); if ($param->isDefaultValueAvailable()) { $parameterString .= ' = ' . var_export($param->getDefaultValue(), true); } } $methods .= $parameterString . ')'; $methods .= "\n" . ' {' . "\n"; $methods .= ' $this->__load();' . "\n"; $methods .= ' return parent::' . $method->getName() . '(' . $argumentString . ');'; $methods .= "\n" . ' }' . "\n"; } } return $methods; } /** * Generates the code for the __sleep method for a proxy class. * * @param $class * @return string */ private function _generateSleep(ClassMetadata $class) { $sleepImpl = ''; if ($class->reflClass->hasMethod('__sleep')) { $sleepImpl .= "return array_merge(array('__isInitialized__'), parent::__sleep());"; } else { $sleepImpl .= "return array('__isInitialized__', "; $first = true; foreach ($class->getReflectionProperties() as $name => $prop) { if ($first) { $first = false; } else { $sleepImpl .= ', '; } $sleepImpl .= "'" . $name . "'"; } $sleepImpl .= ');'; } return $sleepImpl; } /** Proxy class code template */ private static $_proxyClassTemplate = '; /** * THIS CLASS WAS GENERATED BY THE DOCTRINE ORM. DO NOT EDIT THIS FILE. */ class extends \ implements \Doctrine\ORM\Proxy\Proxy { private $_entityPersister; private $_identifier; public $__isInitialized__ = false; public function __construct($entityPersister, $identifier) { $this->_entityPersister = $entityPersister; $this->_identifier = $identifier; } /** @private */ public function __load() { if (!$this->__isInitialized__ && $this->_entityPersister) { $this->__isInitialized__ = true; if (method_exists($this, "__wakeup")) { // call this after __isInitialized__to avoid infinite recursion // but before loading to emulate what ClassMetadata::newInstance() // provides. $this->__wakeup(); } if ($this->_entityPersister->load($this->_identifier, $this) === null) { throw new \Doctrine\ORM\EntityNotFoundException(); } unset($this->_entityPersister, $this->_identifier); } } public function __sleep() { } public function __clone() { if (!$this->__isInitialized__ && $this->_entityPersister) { $this->__isInitialized__ = true; $class = $this->_entityPersister->getClassMetadata(); $original = $this->_entityPersister->load($this->_identifier); if ($original === null) { throw new \Doctrine\ORM\EntityNotFoundException(); } foreach ($class->reflFields AS $field => $reflProperty) { $reflProperty->setValue($this, $reflProperty->getValue($original)); } unset($this->_entityPersister, $this->_identifier); } } }'; }