/**
* Returns an array of items for a page.
*
* @param integer $offset Page offset
* @param integer $itemCountPerPage Number of items per page
* @return array
*/
public function getItems($offset, $itemCountPerPage)
{
// Cast to integers, as $itemCountPerPage can be string sometimes and that would fail later checks
$offset = (int) $offset;
$itemCountPerPage = (int) $itemCountPerPage;
if ($this->_lastOffset === $offset && $this->_lastItemCount === $itemCountPerPage && null !== $this->_lastItems) {
return $this->_lastItems;
}
$this->_lastOffset = $offset;
$this->_lastItemCount = $itemCountPerPage;
// Optimization: by using the MySQL feature SQL_CALC_FOUND_ROWS
// we can get the count and the results in a single query.
$db = $this->_select->getAdapter();
if (null === $this->_count && $db instanceof \Zend_Db_Adapter_Mysqli) {
$this->_select->limit($itemCountPerPage, $offset);
$sql = $this->_select->__toString();
if (\MUtil_String::startsWith($sql, 'select ', true)) {
$sql = 'SELECT SQL_CALC_FOUND_ROWS ' . substr($sql, 7);
}
$this->_lastItems = $db->fetchAll($sql);
$this->_count = $db->fetchOne('SELECT FOUND_ROWS()');
} else {
$this->_lastItems = $this->_selectAdapter->getItems($offset, $itemCountPerPage);
}
if (is_array($this->_lastItems)) {
if (isset($this->_model->prefetchIterator) && $this->_model->prefetchIterator) {
$this->_lastItems = new \ArrayIterator($this->_lastItems);
}
$this->_lastItems = $this->_model->processAfterLoad($this->_lastItems, false, false);
}
return $this->_lastItems;
}
