thetool/application/Workflowitem/Workflowitem.php

<?php

class Workflowitem extends mfBaseModel {
  private $value;
  private $object_id;
  
  public function setObjectId($object_id) {
    if(!is_numeric($object_id)) {
      return false;
    }
    $this->object_id = $object_id;
    return true;
  }
  
  public function unsetObjectId() {
    $this->object_id = null;
  }
  
  public function setValue(Workflowvalue $value) {
    $this->value = $value;
  }
  
  public function getProperty($name) {
    if($this->$name == null) {

      if($name == "value") {
        if(!$this->object_id) {
          return null;
        }
        $value = mfValuecache::singleton()->get("wfItemvalue-item-".$this->id."-object-".$this->object_id);
        if($value) {
          $this->value = $value;
          return $value;
        }
        $value = WorkflowvalueModel::getFirst(['item_id' => $this->id, "object_id" => $this->object_id]);
        // explicitly cache empty value
        mfValuecache::singleton()->set("wfItemvalue-item-".$this->id."-object-".$this->object_id, $value);
        if(!$value) {
          $vdata['item_id'] = $this->id;
          $vdata['object_id'] = $this->object_id;
          $value = WorkflowvalueModel::create($vdata);
        }
        $this->value = $value;
        return $this->value;
      }
   
      $classname = ucfirst($name);
      $idfield = $name."_id";
      $this->$name = new $classname($this->$idfield);
      
      if($this->$name->id) {
        return $this->$name;
      } else {
        return null;
      }
    }
    
    return $this->$name;
  }
}