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doctrine2/lib/Doctrine/ORM/Proxy/ProxyFactory.php

285 lines
9.7 KiB
PHP

<?php
/*
* $Id$
*
* 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 LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
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 <roman@code-factory.org>
* @author Giorgio Sironi <piccoloprincipeazzurro@gmail.com>
* @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 <tt>ProxyFactory</tt> class that is
* connected to the given <tt>EntityManager</tt>.
*
* @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 . '\\' . $proxyClassName;
if ($this->_autoGenerate && ! class_exists($fqn, false)) {
$fileName = $this->_proxyDir . DIRECTORY_SEPARATOR . $proxyClassName . '.php';
$this->_generateProxyClass($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) {
$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);
$placeholders = array(
'<namespace>',
'<proxyClassName>', '<className>',
'<methods>', '<sleepImpl>'
);
if(substr($class->name, 0, 1) == "\\") {
$className = substr($class->name, 1);
} else {
$className = $class->name;
}
$replacements = array(
$this->_proxyNamespace,
$proxyClassName, $className,
$methods, $sleepImpl
);
$file = str_replace($placeholders, $replacements, $file);
file_put_contents($fileName, $file);
}
/**
* 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() || strtolower($method->getName()) == "__sleep") {
continue;
}
if ($method->isPublic() && ! $method->isFinal() && ! $method->isStatic()) {
$methods .= PHP_EOL . ' public function ' . $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 .= PHP_EOL . ' {' . PHP_EOL;
$methods .= ' $this->_load();' . PHP_EOL;
$methods .= ' return parent::' . $method->getName() . '(' . $argumentString . ');';
$methods .= PHP_EOL . ' }' . PHP_EOL;
}
}
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 parent::__sleep();';
} else {
$sleepImpl .= 'return array(';
$first = true;
foreach ($class->getReflectionProperties() as $name => $prop) {
if ($first) {
$first = false;
} else {
$sleepImpl .= ', ';
}
$sleepImpl .= "'" . $name . "'";
}
$sleepImpl .= ');';
}
return $sleepImpl;
}
/** Reference Proxy class code template */
private static $_proxyClassTemplate =
'<?php
namespace <namespace>;
/**
* THIS CLASS WAS GENERATED BY THE DOCTRINE ORM. DO NOT EDIT THIS FILE.
*/
class <proxyClassName> extends \<className> implements \Doctrine\ORM\Proxy\Proxy
{
private $_entityPersister;
private $_identifier;
public $__isInitialized__ = false;
public function __construct($entityPersister, $identifier)
{
$this->_entityPersister = $entityPersister;
$this->_identifier = $identifier;
}
private function _load()
{
if (!$this->__isInitialized__ && $this->_entityPersister) {
$this->__isInitialized__ = true;
if ($this->_entityPersister->load($this->_identifier, $this) === null) {
throw new \Doctrine\ORM\EntityNotFoundException();
}
unset($this->_entityPersister);
unset($this->_identifier);
}
}
<methods>
public function __sleep()
{
if (!$this->__isInitialized__) {
throw new \RuntimeException("Not fully loaded proxy can not be serialized.");
}
<sleepImpl>
}
}';
}