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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\ODM\PHPCR\Mapping\Driver;

use Doctrine\Common\Persistence\Mapping\ClassMetadata;
use Doctrine\Common\Persistence\Mapping\Driver\MappingDriver;
use Doctrine\ODM\PHPCR\Mapping\MappingException;

/**
* The PHPDriver invokes a static PHP function on the document class itself passing
* a ClassMetadata instance for you to manually populate with mapping information.
*
* @license http://www.opensource.org/licenses/MIT-license.php MIT license
* @link www.doctrine-project.org
* @since 1.0
* @author Jonathan H. Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
*/
class PHPDriver implements MappingDriver
{
    /**
* The paths where to look for mapping files.
*
* @var array
*/
    private $paths = array();

    /**
* The file extension of mapping documents.
*
* @var string
*/
    private $fileExtension = '.php';

    /**
* @param array
*/
    private $classNames;

    /**
* Initializes a new AnnotationDriver that uses the given AnnotationReader for reading
* docblock annotations.
*
* @param string|array $paths One or multiple paths where mapping classes can be found.
*/
    public function __construct($paths = null)
    {
        if ($paths) {
            $this->addPaths((array) $paths);
        }
    }

    /**
* Append lookup paths to metadata driver.
*
* @param array $paths
*/
    public function addPaths(array $paths)
    {
        $this->paths = array_unique(array_merge($this->paths, $paths));
    }

    /**
* {@inheritdoc}
*/
    public function loadMetadataForClass($className, ClassMetadata $metadata)
    {
        call_user_func_array(array($className, 'loadMetadata'), array($metadata));
    }

    /**
* {@inheritDoc}
* @TODO Same code exists in \Doctrine\Common\Persistence\Mapping\Driver\AnnotationDriver
* @TODO Should we re-use it somehow or not worry about it?
*/
    public function getAllClassNames()
    {
        if ($this->classNames !== null) {
            return $this->classNames;
        }

        if (!$this->paths) {
            throw MappingException::pathRequired();
        }

        $classes = array();
        $includedFiles = array();

        foreach ($this->paths as $path) {
            if (!is_dir($path)) {
                throw MappingException::fileMappingDriversRequireConfiguredDirectoryPath($path);
            }

            $iterator = new \RegexIterator(
                new \RecursiveIteratorIterator(
                    new \RecursiveDirectoryIterator($path, \FilesystemIterator::SKIP_DOTS),
                    \RecursiveIteratorIterator::LEAVES_ONLY
                ),
                '/^.+'.str_replace('.', '\.', $this->fileExtension).'$/i',
                \RecursiveRegexIterator::GET_MATCH
            );

            foreach ($iterator as $file) {
                $sourceFile = realpath($file[0]);

                require_once $sourceFile;

                $includedFiles[] = $sourceFile;
            }
        }

        $declared = get_declared_classes();

        foreach ($declared as $className) {
            $rc = new \ReflectionClass($className);
            $sourceFile = $rc->getFileName();
            if (in_array($sourceFile, $includedFiles) && !$this->isTransient($className)) {
                $classes[] = $className;
            }
        }

        $this->classNames = $classes;

        return $classes;
    }

    /**
* {@inheritdoc}
*/
    public function isTransient($className)
    {
        return method_exists($className, 'loadMetadata') ? false : true;
    }
}
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