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<?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\Tools\Console\Command\ClearCache;

use Symfony\Component\Console\Input\InputArgument,
Symfony\Component\Console\Input\InputOption,
Symfony\Component\Console;

/**
* Command to clear the result cache of the various cache drivers.
*
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 2.0
* @version $Revision$
* @author Benjamin Eberlei <kontakt@beberlei.de>
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Jonathan Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
*/
class ResultCommand extends Console\Command\Command
{
/**
* @see Console\Command\Command
*/
protected function configure()
{
$this
->setName('orm:clear-cache:result')
->setDescription('Clear result cache of the various cache drivers.')
->setDefinition(array(
new InputOption(
'id', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY,
'ID(s) of the cache entry to delete (accepts * wildcards).', array()
),
new InputOption(
'regex', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY,
'Delete cache entries that match the given regular expression(s).', array()
),
new InputOption(
'prefix', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY,
'Delete cache entries that have the given prefix(es).', array()
),
new InputOption(
'suffix', null, InputOption::VALUE_REQUIRED | InputOption::VALUE_IS_ARRAY,
'Delete cache entries that have the given suffix(es).', array()
),
))
->setHelp(<<<EOT
Clear result cache of the various cache drivers.
If none of the options are defined, all cache entries will be removed.
EOT
);
}

/**
* @see Console\Command\Command
*/
protected function execute(Console\Input\InputInterface $input, Console\Output\OutputInterface $output)
{
$em = $this->getHelper('em')->getEntityManager();
$cacheDriver = $em->getConfiguration()->getResultCacheImpl();

if ( ! $cacheDriver) {
throw new \InvalidArgumentException('No Result cache driver is configured on given EntityManager.');
}

if ($cacheDriver instanceof \Doctrine\Common\Cache\ApcCache) {
throw new \LogicException("Cannot clear APC Cache from Console, its shared in the Webserver memory and not accessible from the CLI.");
}

$outputed = false;

// Removing based on --id
if (($ids = $input->getOption('id')) !== null && $ids) {
foreach ($ids as $id) {
$output->write($outputed ? PHP_EOL : '');
$output->write(sprintf('Clearing Result cache entries that match the id "<info>%s</info>"', $id) . PHP_EOL);

$deleted = $cacheDriver->delete($id);

if (is_array($deleted)) {
$this->_printDeleted($output, $deleted);
} else if (is_bool($deleted) && $deleted) {
$this->_printDeleted($output, array($id));
}

$outputed = true;
}
}

// Removing based on --regex
if (($regexps = $input->getOption('regex')) !== null && $regexps) {
foreach($regexps as $regex) {
$output->write($outputed ? PHP_EOL : '');
$output->write(sprintf('Clearing Result cache entries that match the regular expression "<info>%s</info>"', $regex) . PHP_EOL);

$this->_printDeleted($output, $cacheDriver->deleteByRegex('/' . $regex. '/'));

$outputed = true;
}
}

// Removing based on --prefix
if (($prefixes = $input->getOption('prefix')) !== null & $prefixes) {
foreach ($prefixes as $prefix) {
$output->write($outputed ? PHP_EOL : '');
$output->write(sprintf('Clearing Result cache entries that have the prefix "<info>%s</info>"', $prefix) . PHP_EOL);

$this->_printDeleted($output, $cacheDriver->deleteByPrefix($prefix));

$outputed = true;
}
}

// Removing based on --suffix
if (($suffixes = $input->getOption('suffix')) !== null && $suffixes) {
foreach ($suffixes as $suffix) {
$output->write($outputed ? PHP_EOL : '');
$output->write(sprintf('Clearing Result cache entries that have the suffix "<info>%s</info>"', $suffix) . PHP_EOL);

$this->_printDeleted($output, $cacheDriver->deleteBySuffix($suffix));

$outputed = true;
}
}

// Removing ALL entries
if ( ! $ids && ! $regexps && ! $prefixes && ! $suffixes) {
$output->write($outputed ? PHP_EOL : '');
$output->write('Clearing ALL Result cache entries' . PHP_EOL);

$this->_printDeleted($output, $cacheDriver->deleteAll());

$outputed = true;
}
}

private function _printDeleted(Console\Output\OutputInterface $output, array $items)
{
if ($items) {
foreach ($items as $item) {
$output->write(' - ' . $item . PHP_EOL);
}
} else {
$output->write('No entries to be deleted.' . PHP_EOL);
}
}
}
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