/**
* @return array
*/
private function engines()
{
return array('iblockElement' => IblockElement::className(), 'common' => Common::className(), 'list' => Enum::className(), 'file' => File::className(), 'user' => User::className(), 'bitrixOrmElement' => BitrixOrmElement::className());
}
/**
* Convert attribute chain (by relations)
* to api fields chain (for query)
*
* @param string $attrsChain
* @return string
* @throws Exception
*/
protected function fieldByAttrChainForOrder($attrsChain)
{
list($attr, $relPath) = $this->explodeRelation($attrsChain);
$isRelation = $this->isRelation($attr);
if (!$isRelation) {
$attr = $attrsChain;
}
$field = $this->fieldByAttrForRequestOrder($attr);
if (!is_null($relPath) && $isRelation) {
return $field . '.' . $this->getGatewayByRelAttr($attr)->fieldByAttrChainForOrder($relPath);
}
if (is_null($relPath) && $isRelation) {
if (Enum::className() == $this->getGatewayByRelAttr($attr)->className()) {
$field = str_replace('PROPERTY_', 'PROPERTYSORT_', $field);
return $field;
}
}
if (!is_null($relPath) && !$isRelation) {
$entityClass = $this->getEntityClass();
throw new Exception("Attr call `{$attr}` as relation, but is not related for `{$entityClass}`");
}
if (is_null($relPath) && $isRelation) {
throw new Exception("Sort call `{$attr}` without field");
}
return $field;
}