function InsertQuery_mysql::__toString

Overrides InsertQuery::__toString

File

includes/database/mysql/query.inc, line 44

Class

InsertQuery_mysql

@file Query code for MySQL embedded database engine.

Code

public function __toString() {
    // Create a sanitized comment string to prepend to the query.
    $comments = $this->connection
        ->makeComment($this->comments);
    // Default fields are always placed first for consistency.
    $insert_fields = array_merge($this->defaultFields, $this->insertFields);
    if (method_exists($this->connection, 'escapeFields')) {
        $insert_fields = $this->connection
            ->escapeFields($insert_fields);
    }
    // If we're selecting from a SelectQuery, finish building the query and
    // pass it back, as any remaining options are irrelevant.
    if (!empty($this->fromQuery)) {
        $insert_fields_string = $insert_fields ? ' (' . implode(', ', $insert_fields) . ') ' : ' ';
        return $comments . 'INSERT INTO {' . $this->table . '}' . $insert_fields_string . $this->fromQuery;
    }
    $query = $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $insert_fields) . ') VALUES ';
    $max_placeholder = 0;
    $values = array();
    if (count($this->insertValues)) {
        foreach ($this->insertValues as $insert_values) {
            $placeholders = array();
            // Default fields aren't really placeholders, but this is the most convenient
            // way to handle them.
            $placeholders = array_pad($placeholders, count($this->defaultFields), 'default');
            $new_placeholder = $max_placeholder + count($insert_values);
            for ($i = $max_placeholder; $i < $new_placeholder; ++$i) {
                $placeholders[] = ':db_insert_placeholder_' . $i;
            }
            $max_placeholder = $new_placeholder;
            $values[] = '(' . implode(', ', $placeholders) . ')';
        }
    }
    else {
        // If there are no values, then this is a default-only query. We still need to handle that.
        $placeholders = array_fill(0, count($this->defaultFields), 'default');
        $values[] = '(' . implode(', ', $placeholders) . ')';
    }
    $query .= implode(', ', $values);
    return $query;
}