/**
  * Set value of a single composite field
  *
  * @param string $field
  * @param mixed $value
  * @param bool $markChanged
  * @return $this
  */
 public function setField($field, $value, $markChanged = true)
 {
     $this->objCacheClear();
     // Skip non-db fields
     if (!$this->hasField($field)) {
         return $this;
     }
     // Set changed
     if ($markChanged) {
         $this->isChanged = true;
     }
     // Set bound object
     if ($this->record instanceof DataObject) {
         $key = $this->getName() . $field;
         $this->record->setField($key, $value);
         return $this;
     }
     // Set local record
     $this->record[$field] = $value;
     return $this;
 }