/**
* Get the global static instance of mr_var
*
* @return mr_var
*/
public static function instance()
{
if (self::$_instance === NULL) {
// Automatically set mrconfig
$config = get_config('local/mr');
if (empty($config)) {
$config = new stdClass();
}
self::$_instance = new mr_var(array('mrconfig' => $config));
}
return self::$_instance;
}
/**
* Constructor - create a new interface to the cache
*
* @param string $prefix Prefix all cache IDs with this string
*/
public function __construct($prefix = NULL)
{
// Setup Zend
mr_bootstrap::zend();
require_once 'Zend/Cache.php';
require_once 'Zend/Cache/Exception.php';
// For prefixes, switch forward slashes, which are not accepted, to underscores
if (!is_null($prefix)) {
$prefix = str_replace('/', '_', $prefix);
}
// DISABLED!!! Not yet implemented on our servers
if (defined('MR_CACHE_TEST') and !empty(mr_var::instance()->get('mrconfig')->cache_lifetime)) {
$frontendoptions = array('cache_id_prefix' => $prefix, 'lifetime' => mr_var::instance()->get('mrconfig')->cache_lifetime);
$backendoptions = array();
try {
$this->cache = Zend_Cache::factory(self::FRONTEND, self::BACKEND, $frontendoptions, $backendoptions);
} catch (Zend_Cache_Exception $e) {
$this->cache = false;
}
}
}
/**
* Get global plugin config
*
* @return object
* @example settings.php See how to save global config to work with this method
* @todo This should use $this->component instead of $this->plugin. This will break mod/assignment/efolio
*/
public function get_config()
{
if (!mr_var::instance()->exists($this->plugin)) {
if (!($config = get_config($this->plugin))) {
$config = new stdClass();
}
mr_var::instance()->set($this->plugin, $config);
}
return mr_var::instance()->get($this->plugin);
}
public function test_cache_broken()
{
if (!defined('MR_CACHE_TEST')) {
return;
}
$old = mr_var::instance()->get('mrconfig')->cache_lifetime;
mr_var::instance()->get('mrconfig')->cache_lifetime = 0;
$cache = new mr_cache('test/mr/cache');
$this->assertFalse($cache->test('key'));
$this->assertTrue($cache->save('value', 'key'));
$this->assertFalse($cache->test('key'));
$this->assertFalse($cache->load('key'));
$this->assertTrue($cache->touch('key', 60));
$this->assertTrue($cache->remove('key'));
mr_var::instance()->get('mrconfig')->cache_lifetime = $old;
}
/**
* Construct
*
* @param moodle_url $url Base URL
* @param int $courseid Course ID
* @param boolean $autorun Automatically run the report SQL and
* retrieve rows for rendering or exporting
*/
public function __construct(moodle_url $url, $courseid = NULL, $autorun = true)
{
if (is_null($courseid) or $courseid == 0) {
$courseid = SITEID;
}
$this->url = $url;
$this->courseid = $courseid;
$this->config = new mr_var();
$this->preferences = new mr_preferences($courseid, $this->type());
// Setup config defaults
$this->config->set(array('cache' => false, 'ajax' => false, 'ajaxdefault' => 1, 'export' => false, 'maxrows' => 65000, 'perpage' => false, 'perpageopts' => array('all', 10, 25, 50, 100, 200, 500, 1000)));
$this->_init();
if ($autorun) {
$this->run();
}
}
/**
* A config setter - overwrites old value
*
* @param string $name Name of the config to set
* @param mixed $value The value of the config
* @return mr_html_table_column
*/
public function set_config($name, $value)
{
$this->config->set($name, $value);
return $this;
}
