DB\Cursor::cast PHP Method

    abstract function cast($obj = NULL);

 /**
  * Return fields of mapper object as an associative array
  * @return array
  * @param bool|Cortex $obj
  * @param bool|int $rel_depths depths to resolve relations
  */
 public function cast($obj = NULL, $rel_depths = 1)
 {
     $fields = $this->mapper->cast($obj ? $obj->mapper : null);
     if (!empty($this->vFields)) {
         foreach (array_keys($this->vFields) as $key) {
             $fields[$key] = $this->get($key);
         }
     }
     if (is_int($rel_depths)) {
         $rel_depths--;
     }
     if (!empty($this->fieldConf)) {
         $fields += array_fill_keys(array_keys($this->fieldConf), NULL);
         if ($this->whitelist) {
             $fields = array_intersect_key($fields, array_flip($this->whitelist));
         }
         $mp = $obj ?: $this;
         foreach ($fields as $key => &$val) {
             // post process configured fields
             if (isset($this->fieldConf[$key]) && is_array($this->fieldConf[$key])) {
                 // handle relations
                 if (($rel_depths === TRUE || is_int($rel_depths) && $rel_depths >= 0) && ($type = preg_grep('/[belongs|has]-(to-)*[one|many]/', array_keys($this->fieldConf[$key])))) {
                     $relType = $type[0];
                     // cast relations
                     $val = ($relType == 'belongs-to-one' || $relType == 'belongs-to-many') && !$mp->exists($key) ? NULL : $mp->get($key);
                     if ($val instanceof Cortex) {
                         $val = $val->cast(null, $rel_depths);
                     } elseif ($val instanceof CortexCollection) {
                         $val = $val->castAll($rel_depths);
                     }
                 } elseif (isset($this->fieldConf[$key]['type'])) {
                     if ($this->dbsType == 'sql') {
                         if ($this->fieldConf[$key]['type'] == self::DT_SERIALIZED) {
                             $val = unserialize($this->mapper->{$key});
                         } elseif ($this->fieldConf[$key]['type'] == self::DT_JSON) {
                             $val = json_decode($this->mapper->{$key}, true);
                         }
                     }
                     if ($this->exists($key) && preg_match('/BOOL/i', $this->fieldConf[$key]['type'])) {
                         $val = (bool) $this->mapper->{$key};
                     }
                 }
             }
             if ($this->dbsType == 'mongo' && $key == '_id') {
                 $val = (string) $val;
             }
             if ($this->dbsType == 'sql' && $key == 'id' && $this->standardiseID) {
                 $fields['_id'] = $val;
                 unset($fields[$key]);
             }
             unset($val);
         }
     }
     // custom getter
     foreach ($fields as $key => &$val) {
         $val = $this->emit('get_' . $key, $val);
         unset($val);
     }
     return $fields;
 }