/**
* Deletes relationships for an object or a class in relationship
* @param epClassMap $cm the class map for epObjectRelationship
* @param string $base_a name of base class a
* @param integer $oid
*/
public function deleteRelationship($cm, $class, $oid = null)
{
// make sure the table is created
if (!$this->create($cm, false)) {
return false;
}
// make sql for relationship update
$sql = epObj2Sql::sqlDeleteRelationship($this, $cm->getTable(), $class, $oid);
if (!$sql) {
return false;
}
// execute sql
$this->_execute($sql);
return true;
}
/**
* Empty a table specified in class map
* @param epClassMap
* @return bool
*/
public function truncate($cm)
{
// preapre sql statement
$sql = epObj2Sql::sqlTruncate($this, $cm);
if (!$sql) {
return false;
}
// execute sql
return $r = $this->_execute($sql);
}
