function views_handler_relationship::query

Called to implement a relationship in a query.

File

handlers/views_handler_relationship.inc, line 109

Class

views_handler_relationship

Relationship handler, allows a new version of the primary table to be linked.

Code

public function query() {
    // Figure out what base table this relationship brings to the party.
    $table_data = views_fetch_data($this->definition['base']);
    $base_field = empty($this->definition['base field']) ? $table_data['table']['base']['field'] : $this->definition['base field'];
    $this->ensure_my_table();
    $def = $this->definition;
    $def['table'] = $this->definition['base'];
    $def['field'] = $base_field;
    $def['left_table'] = $this->table_alias;
    $def['left_field'] = $this->real_field;
    if (!empty($this->options['required'])) {
        $def['type'] = 'INNER';
    }
    if (!empty($this->definition['extra'])) {
        $def['extra'] = $this->definition['extra'];
    }
    if (!empty($def['join_handler']) && class_exists($def['join_handler'])) {
        $join = new $def['join_handler']();
    }
    else {
        $join = new views_join();
    }
    $join->definition = $def;
    $join->options = $this->options;
    $join->construct();
    $join->adjusted = TRUE;
    // Use a short alias for this.
    $alias = $def['table'] . '_' . $this->table;
    $this->alias = $this->query
        ->add_relationship($alias, $join, $this->definition['base'], $this->relationship);
    // Add access tags if the base table provide it.
    if (empty($this->query->options['disable_sql_rewrite']) && isset($table_data['table']['base']['access query tag'])) {
        $access_tag = $table_data['table']['base']['access query tag'];
        $this->query
            ->add_tag($access_tag);
    }
}