<?php
 public function onReload($param = NULL)
    {
        try
        {
            // open a transaction with database 'educacional'
            TTransaction::open('educacional');
            
            // creates a repository for CdnDisciplina
            $repository = new TRepository('CdnDisciplina');
            $limit = 100;
            // creates a criteria
            $criteria = new TCriteria;
            
            // default order
            if (empty($param['order']))
            {
                $param['order'] = 'id';
                $param['direction'] = 'asc';
            }
            $criteria->setProperties($param); // order, offset
            $criteria->setProperty('limit', $limit);
            
            if (TSession::getValue('CdnDisciplina_filter_id')) {
                $criteria->add(TSession::getValue('CdnDisciplina_filter_id', TExpression::OR_OPERATOR)); // add the session filter
            }
            if (TSession::getValue('CdnDisciplina_filter_nome')) {
                $criteria->add(TSession::getValue('CdnDisciplina_filter_nome'), TExpression::OR_OPERATOR); // add the session filter
            }
            // load the objects according to criteria
            $objects = $repository->load($criteria, FALSE);
            
            if (is_callable($this->transformCallback))
            {
                call_user_func($this->transformCallback, $objects, $param);
            }
            //var_dump($objects);
            $this->datagrid->clear();
            if ($objects)
            {
                // iterate the collection of active records
                foreach ($objects as $object)
                {
                    // add the object inside the datagrid
                    $this->datagrid->addItem($object);
                }
            }
            
            // reset the criteria for record count
            $criteria->resetProperties();
            $count= $repository->count($criteria);
            
            $this->pageNavigation->setCount($count); // count of records
            $this->pageNavigation->setProperties($param); // order, page
            $this->pageNavigation->setLimit($limit); // limit
            
            // close the transaction
            TTransaction::close();
            $this->loaded = true;
        }
        catch (Exception $e) // in case of exception
        {
            // shows the exception error message
            new TMessage('error', $e->getMessage());
            // undo all pending operations
            TTransaction::rollback();
        }
    }
?>