function views_many_to_one_helper::ensure_my_table

Override ensure_my_table so we can control how this joins in. The operator actually has influence over joining.

File

includes/handlers.inc, line 889

Class

views_many_to_one_helper

This many to one helper object is used on both arguments and filters.

Code

function ensure_my_table() {
    if (!isset($this->handler->table_alias)) {
        // For 'or' if we're not reducing duplicates, we get the absolute simplest:
        $field = $this->handler->relationship . '_' . $this->handler->table . '.' . $this->handler->field;
        if ($this->handler->operator == 'or' && empty($this->handler->options['reduce_duplicates'])) {
            if (empty($this->handler->options['add_table']) && empty($this->handler->view->many_to_one_tables[$field])) {
                // query optimization, INNER joins are slightly faster, so use them
                // when we know we can.
                $join = $this->get_join();
                if (isset($join)) {
                    $join->type = 'INNER';
                }
                $this->handler->table_alias = $this->handler->query
                    ->ensure_table($this->handler->table, $this->handler->relationship, $join);
                $this->handler->view->many_to_one_tables[$field] = $this->handler->value;
            }
            else {
                $join = $this->get_join();
                $join->type = 'LEFT';
                if (!empty($this->handler->view->many_to_one_tables[$field])) {
                    foreach ($this->handler->view->many_to_one_tables[$field] as $value) {
                        $join->extra = array(
                            array(
                                'field' => $this->handler->real_field,
                                'operator' => '!=',
                                'value' => $value,
                                'numeric' => !empty($this->handler->definition['numeric']),
                            ),
                        );
                    }
                }
                $this->handler->table_alias = $this->add_table($join);
            }
            return $this->handler->table_alias;
        }
        if ($this->handler->operator != 'not') {
            // If it's an and or an or, we do one join per selected value.
            // Clone the join for each table:
            $this->handler->table_aliases = array();
            foreach ($this->handler->value as $value) {
                $join = $this->get_join();
                if ($this->handler->operator == 'and') {
                    $join->type = 'INNER';
                }
                $join->extra = array(
                    array(
                        'field' => $this->handler->real_field,
                        'value' => $value,
                        'numeric' => !empty($this->handler->definition['numeric']),
                    ),
                );
                // The table alias needs to be unique to this value across the
                // multiple times the filter or argument is called by the view.
                if (!isset($this->handler->view->many_to_one_aliases[$field][$value])) {
                    if (!isset($this->handler->view->many_to_one_count[$this->handler->table])) {
                        $this->handler->view->many_to_one_count[$this->handler->table] = 0;
                    }
                    $this->handler->view->many_to_one_aliases[$field][$value] = $this->handler->table . '_value_' . $this->handler->view->many_to_one_count[$this->handler->table]++;
                }
                $alias = $this->handler->table_aliases[$value] = $this->add_table($join, $this->handler->view->many_to_one_aliases[$field][$value]);
                // and set table_alias to the first of these.
                if (empty($this->handler->table_alias)) {
                    $this->handler->table_alias = $alias;
                }
            }
        }
        else {
            // For not, we just do one join. We'll add a where clause during
            // the query phase to ensure that $table.$field IS NULL.
            $join = $this->get_join();
            $join->type = 'LEFT';
            $join->extra = array();
            $join->extra_type = 'OR';
            foreach ($this->handler->value as $value) {
                $join->extra[] = array(
                    'field' => $this->handler->real_field,
                    'value' => $value,
                    'numeric' => !empty($this->handler->definition['numeric']),
                );
            }
            $this->handler->table_alias = $this->add_table($join);
        }
    }
    return $this->handler->table_alias;
}