/**
* Add a deletion to the buffer.
*
* @param phpcassa\ColumnFamily $column_family an initialized
* ColumnFamily instance
* @param mixed $key the row key
* @param mixed[] $columns a list of columns or super columns to delete
* @param mixed $supercolumn if you want to delete only some subcolumns from
* a single super column, set this to the super column name
* @param int $timestamp an optional timestamp (default is "now", when
* this function is called, not when send() is called)
*/
public function remove($column_family, $key, $columns = null, $super_column = null, $timestamp = null)
{
if ($timestamp === null) {
$timestamp = Clock::get_time();
}
$deletion = new Deletion();
$deletion->timestamp = $timestamp;
if ($super_column !== null) {
$deletion->super_column = $column_family->pack_name($super_column, true);
}
if ($columns !== null) {
$is_super = $column_family->is_super && $super_column === null;
$packed_cols = array();
foreach ($columns as $col) {
$packed_cols[] = $column_family->pack_name($col, $is_super);
}
$predicate = new SlicePredicate();
$predicate->column_names = $packed_cols;
$deletion->predicate = $predicate;
}
$mutation = new Mutation();
$mutation->deletion = $deletion;
$packed_key = $column_family->pack_key($key);
$this->enqueue($packed_key, $column_family, array($mutation));
return $this;
}
