285 lines
9.7 KiB
PHP
285 lines
9.7 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\ORM\Proxy;
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use Doctrine\ORM\EntityManager,
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Doctrine\ORM\Mapping\ClassMetadata,
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Doctrine\ORM\Mapping\AssociationMapping;
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/**
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* This factory is used to create proxy objects for entities at runtime.
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*
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* @author Roman Borschel <roman@code-factory.org>
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* @author Giorgio Sironi <piccoloprincipeazzurro@gmail.com>
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* @since 2.0
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*/
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class ProxyFactory
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{
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/** The EntityManager this factory is bound to. */
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private $_em;
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/** Whether to automatically (re)generate proxy classes. */
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private $_autoGenerate;
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/** The namespace that contains all proxy classes. */
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private $_proxyNamespace;
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/** The directory that contains all proxy classes. */
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private $_proxyDir;
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/**
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* Initializes a new instance of the <tt>ProxyFactory</tt> class that is
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* connected to the given <tt>EntityManager</tt>.
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*
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* @param EntityManager $em The EntityManager the new factory works for.
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* @param string $proxyDir The directory to use for the proxy classes. It must exist.
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* @param string $proxyNs The namespace to use for the proxy classes.
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* @param boolean $autoGenerate Whether to automatically generate proxy classes.
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*/
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public function __construct(EntityManager $em, $proxyDir, $proxyNs, $autoGenerate = false)
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{
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if ( ! $proxyDir) {
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throw ProxyException::proxyDirectoryRequired();
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}
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if ( ! $proxyNs) {
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throw ProxyException::proxyNamespaceRequired();
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}
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$this->_em = $em;
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$this->_proxyDir = $proxyDir;
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$this->_autoGenerate = $autoGenerate;
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$this->_proxyNamespace = $proxyNs;
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}
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/**
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* Gets a reference proxy instance for the entity of the given type and identified by
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* the given identifier.
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*
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* @param string $className
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* @param mixed $identifier
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* @return object
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*/
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public function getProxy($className, $identifier)
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{
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$proxyClassName = str_replace('\\', '', $className) . 'Proxy';
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$fqn = $this->_proxyNamespace . '\\' . $proxyClassName;
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if ($this->_autoGenerate && ! class_exists($fqn, false)) {
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$fileName = $this->_proxyDir . DIRECTORY_SEPARATOR . $proxyClassName . '.php';
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$this->_generateProxyClass($this->_em->getClassMetadata($className), $proxyClassName, $fileName, self::$_proxyClassTemplate);
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require $fileName;
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}
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if ( ! $this->_em->getMetadataFactory()->hasMetadataFor($fqn)) {
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$this->_em->getMetadataFactory()->setMetadataFor($fqn, $this->_em->getClassMetadata($className));
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}
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$entityPersister = $this->_em->getUnitOfWork()->getEntityPersister($className);
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return new $fqn($entityPersister, $identifier);
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}
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/**
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* Generates proxy classes for all given classes.
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*
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* @param array $classes The classes (ClassMetadata instances) for which to generate proxies.
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* @param string $toDir The target directory of the proxy classes. If not specified, the
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* directory configured on the Configuration of the EntityManager used
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* by this factory is used.
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*/
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public function generateProxyClasses(array $classes, $toDir = null)
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{
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$proxyDir = $toDir ?: $this->_proxyDir;
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$proxyDir = rtrim($proxyDir, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;
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foreach ($classes as $class) {
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$proxyClassName = str_replace('\\', '', $class->name) . 'Proxy';
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$proxyFileName = $proxyDir . $proxyClassName . '.php';
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$this->_generateProxyClass($class, $proxyClassName, $proxyFileName, self::$_proxyClassTemplate);
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}
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}
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/**
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* Generates a proxy class file.
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*
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* @param $class
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* @param $originalClassName
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* @param $proxyClassName
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* @param $file The path of the file to write to.
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*/
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private function _generateProxyClass($class, $proxyClassName, $fileName, $file)
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{
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$methods = $this->_generateMethods($class);
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$sleepImpl = $this->_generateSleep($class);
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$placeholders = array(
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'<namespace>',
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'<proxyClassName>', '<className>',
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'<methods>', '<sleepImpl>'
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);
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if(substr($class->name, 0, 1) == "\\") {
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$className = substr($class->name, 1);
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} else {
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$className = $class->name;
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}
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$replacements = array(
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$this->_proxyNamespace,
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$proxyClassName, $className,
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$methods, $sleepImpl
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);
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$file = str_replace($placeholders, $replacements, $file);
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file_put_contents($fileName, $file);
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}
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/**
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* Generates the methods of a proxy class.
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*
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* @param ClassMetadata $class
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* @return string The code of the generated methods.
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*/
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private function _generateMethods(ClassMetadata $class)
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{
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$methods = '';
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foreach ($class->reflClass->getMethods() as $method) {
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/* @var $method ReflectionMethod */
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if ($method->isConstructor() || strtolower($method->getName()) == "__sleep") {
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continue;
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}
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if ($method->isPublic() && ! $method->isFinal() && ! $method->isStatic()) {
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$methods .= PHP_EOL . ' public function ' . $method->getName() . '(';
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$firstParam = true;
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$parameterString = $argumentString = '';
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foreach ($method->getParameters() as $param) {
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if ($firstParam) {
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$firstParam = false;
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} else {
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$parameterString .= ', ';
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$argumentString .= ', ';
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}
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// We need to pick the type hint class too
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if (($paramClass = $param->getClass()) !== null) {
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$parameterString .= '\\' . $paramClass->getName() . ' ';
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} else if ($param->isArray()) {
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$parameterString .= 'array ';
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}
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if ($param->isPassedByReference()) {
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$parameterString .= '&';
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}
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$parameterString .= '$' . $param->getName();
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$argumentString .= '$' . $param->getName();
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if ($param->isDefaultValueAvailable()) {
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$parameterString .= ' = ' . var_export($param->getDefaultValue(), true);
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}
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}
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$methods .= $parameterString . ')';
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$methods .= PHP_EOL . ' {' . PHP_EOL;
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$methods .= ' $this->_load();' . PHP_EOL;
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$methods .= ' return parent::' . $method->getName() . '(' . $argumentString . ');';
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$methods .= PHP_EOL . ' }' . PHP_EOL;
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}
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}
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return $methods;
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}
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/**
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* Generates the code for the __sleep method for a proxy class.
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*
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* @param $class
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* @return string
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*/
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private function _generateSleep(ClassMetadata $class)
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{
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$sleepImpl = '';
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if ($class->reflClass->hasMethod('__sleep')) {
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$sleepImpl .= 'return parent::__sleep();';
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} else {
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$sleepImpl .= 'return array(';
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$first = true;
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foreach ($class->getReflectionProperties() as $name => $prop) {
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if ($first) {
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$first = false;
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} else {
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$sleepImpl .= ', ';
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}
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$sleepImpl .= "'" . $name . "'";
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}
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$sleepImpl .= ');';
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}
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return $sleepImpl;
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}
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/** Reference Proxy class code template */
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private static $_proxyClassTemplate =
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'<?php
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namespace <namespace>;
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/**
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* THIS CLASS WAS GENERATED BY THE DOCTRINE ORM. DO NOT EDIT THIS FILE.
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*/
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class <proxyClassName> extends \<className> implements \Doctrine\ORM\Proxy\Proxy
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{
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private $_entityPersister;
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private $_identifier;
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public $__isInitialized__ = false;
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public function __construct($entityPersister, $identifier)
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{
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$this->_entityPersister = $entityPersister;
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$this->_identifier = $identifier;
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}
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private function _load()
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{
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if (!$this->__isInitialized__ && $this->_entityPersister) {
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$this->__isInitialized__ = true;
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if ($this->_entityPersister->load($this->_identifier, $this) === null) {
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throw new \Doctrine\ORM\EntityNotFoundException();
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}
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unset($this->_entityPersister);
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unset($this->_identifier);
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}
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}
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<methods>
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public function __sleep()
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{
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if (!$this->__isInitialized__) {
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throw new \RuntimeException("Not fully loaded proxy can not be serialized.");
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}
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<sleepImpl>
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}
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}';
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}
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