function views_handler_argument_term_node_tid_depth::query

Overrides views_handler_argument::query

File

modules/taxonomy/views_handler_argument_term_node_tid_depth.inc, line 99

Class

views_handler_argument_term_node_tid_depth
Argument handler for taxonomy terms with depth.

Code

public function query($group_by = FALSE) {
    $this->ensure_my_table();
    if (!empty($this->options['break_phrase'])) {
        $tids = new stdClass();
        $tids->value = $this->argument;
        $tids = views_break_phrase($this->argument, $tids);
        if ($tids->value == array(
            -1,
        )) {
            return FALSE;
        }
        if (is_array($tids->value) && count($tids->value) > 1) {
            $operator = 'IN';
        }
        else {
            $operator = '=';
        }
        $tids = $tids->value;
    }
    else {
        $operator = "=";
        $tids = $this->argument;
    }
    // Now build the subqueries.
    $subquery = db_select('taxonomy_index', 'tn');
    $subquery->addField('tn', 'nid');
    $where = db_or()->condition('tn.tid', $tids, $operator);
    $last = "tn";
    if ($this->options['depth'] > 0) {
        $subquery->leftJoin('taxonomy_term_hierarchy', 'th', "th.tid = tn.tid");
        $last = "th";
        foreach (range(1, abs($this->options['depth'])) as $count) {
            $subquery->leftJoin('taxonomy_term_hierarchy', "th{$count}", "{$last}.parent = th{$count}.tid");
            $where->condition("th{$count}.tid", $tids, $operator);
            $last = "th{$count}";
        }
    }
    elseif ($this->options['depth'] < 0) {
        foreach (range(1, abs($this->options['depth'])) as $count) {
            $subquery->leftJoin('taxonomy_term_hierarchy', "th{$count}", "{$last}.tid = th{$count}.parent");
            $where->condition("th{$count}.tid", $tids, $operator);
            $last = "th{$count}";
        }
    }
    $subquery->condition($where);
    $this->query
        ->add_where(0, "{$this->table_alias}.{$this->real_field}", $subquery, 'IN');
}