VariableFrontend.php

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<?php
namespace TYPO3\CMS\Core\Cache\Frontend;

class VariableFrontend extends \TYPO3\CMS\Core\Cache\Frontend\AbstractFrontend {

    protected $useIgBinary = FALSE;

    public function initializeObject() {
        $this->useIgBinary = extension_loaded('igbinary');
    }

    public function set($entryIdentifier, $variable, array $tags = array(), $lifetime = NULL) {
        if (!$this->isValidEntryIdentifier($entryIdentifier)) {
            throw new \InvalidArgumentException('"' . $entryIdentifier . '" is not a valid cache entry identifier.', 1233058264);
        }
        foreach ($tags as $tag) {
            if (!$this->isValidTag($tag)) {
                throw new \InvalidArgumentException('"' . $tag . '" is not a valid tag for a cache entry.', 1233058269);
            }
        }
        if (is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/cache/frontend/class.t3lib_cache_frontend_variablefrontend.php']['set'])) {
            foreach ($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/cache/frontend/class.t3lib_cache_frontend_variablefrontend.php']['set'] as $_funcRef) {
                $params = array(
                    'entryIdentifier' => &$entryIdentifier,
                    'variable' => &$variable,
                    'tags' => &$tags,
                    'lifetime' => &$lifetime
                );
                \TYPO3\CMS\Core\Utility\GeneralUtility::callUserFunction($_funcRef, $params, $this);
            }
        }
        if ($this->useIgBinary === TRUE) {
            $this->backend->set($entryIdentifier, igbinary_serialize($variable), $tags, $lifetime);
        } else {
            $this->backend->set($entryIdentifier, serialize($variable), $tags, $lifetime);
        }
    }

    public function get($entryIdentifier) {
        if (!$this->isValidEntryIdentifier($entryIdentifier)) {
            throw new \InvalidArgumentException('"' . $entryIdentifier . '" is not a valid cache entry identifier.', 1233058294);
        }
        $rawResult = $this->backend->get($entryIdentifier);
        if ($rawResult === FALSE) {
            return FALSE;
        } else {
            return $this->useIgBinary === TRUE ? igbinary_unserialize($rawResult) : unserialize($rawResult);
        }
    }

    public function getByTag($tag) {
        if (!$this->isValidTag($tag)) {
            throw new \InvalidArgumentException('"' . $tag . '" is not a valid tag for a cache entry.', 1233058312);
        }
        $entries = array();
        $identifiers = $this->backend->findIdentifiersByTag($tag);
        foreach ($identifiers as $identifier) {
            $rawResult = $this->backend->get($identifier);
            if ($rawResult !== FALSE) {
                $entries[] = $this->useIgBinary === TRUE ? igbinary_unserialize($rawResult) : unserialize($rawResult);
            }
        }
        return $entries;
    }

}