/**
* appends sql to given select statement
*
* @param Zend_Db_Select $_select
* @param Tinebase_Backend_Sql_Abstract $_backend
* @throws Tinebase_Exception_AccessDenied
*/
public function appendFilterSql($_select, $_backend)
{
$db = $_backend->getAdapter();
if ($this->_requiredGrants === NULL) {
throw new Tinebase_Exception_AccessDenied('No grants have been defined.');
}
// it searches select columns
// return an array where each element has 3 items: 0 - table, 1 - field/expression, 2 - alias
$columns = $_select->getPart(Zend_Db_Select::COLUMNS);
// it gets an array with expressions used in having clause
$grants = array();
foreach ($columns as $column) {
if (!empty($column[2])) {
$grants[$column[2]] = $column[1];
}
}
// it uses into having clause expressions instead of aliases
foreach ($this->_requiredGrants as $grant) {
$_select->orHaving($db->quoteInto($db->quoteIdentifier($grants[$grant]) . ' = ?', 1, Zend_Db::INT_TYPE));
}
}
