Cache/Engine.php at master · br-devel/Cache · GitHub

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<?php

abstract class EtuDev_Cache_Engine
{

    /**
     * @var EtuDev_Cache_Driver
     */
    protected $driver;

    protected $loaded = false;

    public function __construct()
    {
        $this->loadDriver();
        $this->loaded = true;
    }

    abstract protected function loadDriver();

    /**
     * @return bool
     */
    public function isEnabled()
    {
        if (!$this->loaded) {
            $this->loadDriver();
        }

        if (!$this->driver) {
            return false;
        }

        return $this->driver->isEnabled();
    }

    /**
     * @param string $key
     * @param mixed  $value
     * @param int    $ttl
     *
     * @return bool|mixed
     */
    public function set($key, $value, $ttl = 3600)
    {
        if (!$this->loaded) {
            $this->loadDriver();
        }

        if (!$this->driver) {
            return false;
        }

        return $this->driver->set($key, $value, $ttl);
    }

    /**
     * @param string $key
     *
     * @return bool|mixed
     */
    public function get($key)
    {
        if (!$this->loaded) {
            $this->loadDriver();
        }

        if (!$this->driver) {
            return false;
        }

        return $this->driver->get($key);
    }


    /**
     * @return mixed
     */
    public function flush()
    {
        if (!$this->loaded) {
            $this->loadDriver();
        }

        if (!$this->driver) {
            return false;
        }

        return $this->driver->flush();
    }

    /**
     * @param string $key
     *
     * @return bool|mixed
     */
    public function delete($key)
    {
        if (!$this->loaded) {
            $this->loadDriver();
        }

        if (!$this->driver) {
            return false;
        }

        return $this->driver->delete($key);
    }


}