public function getIndexSchema($name, $refresh = false)
{
if (isset($this->_indexes[$name]) && !$refresh) {
return $this->_indexes[$name];
}
$db = $this->db;
$realName = $this->getRawIndexName($name);
if ($db->enableSchemaCache && !in_array($name, $db->schemaCacheExclude, true)) {
/* @var $cache Cache */
$cache = is_string($db->schemaCache) ? Yii::$app->get($db->schemaCache, false) : $db->schemaCache;
if ($cache instanceof Cache) {
$key = $this->getCacheKey($name);
if ($refresh || ($index = $cache->get($key)) === false) {
$index = $this->loadIndexSchema($realName);
if ($index !== null) {
$cache->set($key, $index, $db->schemaCacheDuration, new TagDependency(['tags' => $this->getCacheTag()]));
}
}
return $this->_indexes[$name] = $index;
}
}
return $this->_indexes[$name] = $this->loadIndexSchema($realName);
}