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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\Common\Persistence\Mapping\Driver;
use Doctrine\Common\Persistence\Mapping\MappingException;
/**
* Base driver for file-based metadata drivers.
*
* A file driver operates in a mode where it loads the mapping files of individual
* classes on demand. This requires the user to adhere to the convention of 1 mapping
* file per class and the file names of the mapping files must correspond to the full
* class name, including namespace, with the namespace delimiters '\', replaced by dots '.'.
*
* @link www.doctrine-project.org
* @since 2.2
* @author Benjamin Eberlei <kontakt@beberlei.de>
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Jonathan H. Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
*/
abstract class FileDriver implements MappingDriver
{
/**
* @var FileLocator
*/
protected $locator;
/**
* @var array|null
*/
protected $classCache;
/**
* @var string|null
*/
protected $globalBasename;
/**
* Initializes a new FileDriver that looks in the given path(s) for mapping
* documents and operates in the specified operating mode.
*
* @param string|array|FileLocator $locator A FileLocator or one/multiple paths
* where mapping documents can be found.
* @param string|null $fileExtension
*/
public function __construct($locator, $fileExtension = null)
{
if ($locator instanceof FileLocator) {
$this->locator = $locator;
} else {
$this->locator = new DefaultFileLocator((array)$locator, $fileExtension);
}
}
/**
* Sets the global basename.
*
* @param string $file
*
* @return void
*/
public function setGlobalBasename($file)
{
$this->globalBasename = $file;
}
/**
* Retrieves the global basename.
*
* @return string|null
*/
public function getGlobalBasename()
{
return $this->globalBasename;
}
/**
* Gets the element of schema meta data for the class from the mapping file.
* This will lazily load the mapping file if it is not loaded yet.
*
* @param string $className
*
* @return array The element of schema meta data.
*
* @throws MappingException
*/
public function getElement($className)
{
if ($this->classCache === null) {
$this->initialize();
}
if (isset($this->classCache[$className])) {
return $this->classCache[$className];
}
$result = $this->loadMappingFile($this->locator->findMappingFile($className));
if (!isset($result[$className])) {
throw MappingException::invalidMappingFile($className, str_replace('\\', '.', $className) . $this->locator->getFileExtension());
}
return $result[$className];
}
/**
* {@inheritDoc}
*/
public function isTransient($className)
{
if ($this->classCache === null) {
$this->initialize();
}
if (isset($this->classCache[$className])) {
return false;
}
return !$this->locator->fileExists($className);
}
/**
* {@inheritDoc}
*/
public function getAllClassNames()
{
if ($this->classCache === null) {
$this->initialize();
}
if (! $this->classCache) {
return (array) $this->locator->getAllClassNames($this->globalBasename);
}
return array_merge(
array_keys($this->classCache),
(array) $this->locator->getAllClassNames($this->globalBasename)
);
}
/**
* Loads a mapping file with the given name and returns a map
* from class/entity names to their corresponding file driver elements.
*
* @param string $file The mapping file to load.
*
* @return array
*/
abstract protected function loadMappingFile($file);
/**
* Initializes the class cache from all the global files.
*
* Using this feature adds a substantial performance hit to file drivers as
* more metadata has to be loaded into memory than might actually be
* necessary. This may not be relevant to scenarios where caching of
* metadata is in place, however hits very hard in scenarios where no
* caching is used.
*
* @return void
*/
protected function initialize()
{
$this->classCache = [];
if (null !== $this->globalBasename) {
foreach ($this->locator->getPaths() as $path) {
$file = $path.'/'.$this->globalBasename.$this->locator->getFileExtension();
if (is_file($file)) {
$this->classCache = array_merge(
$this->classCache,
$this->loadMappingFile($file)
);
}
}
}
}
/**
* Retrieves the locator used to discover mapping files by className.
*
* @return FileLocator
*/
public function getLocator()
{
return $this->locator;
}
/**
* Sets the locator used to discover mapping files by className.
*
* @param FileLocator $locator
*/
public function setLocator(FileLocator $locator)
{
$this->locator = $locator;
}
}