Match & redirect based on URIs to another site with similar URIs structured

If all the condition will be same like above, Then i will write simple iRule like below.

    when HTTP_REQUEST {
        set uri [string tolower [HTTP::uri]]
        if { [string tolower [HTTP::host]] equals "my.oldsite.com" } {
        HTTP::redirect "http://my.newsite.com$uri"
             }
    }