Hi Scott, 

I tried a simplified query like this: 

PREFIX afn:       <http://jena.hpl.hp.com/function#>
SELECT ?x ?now
WHERE {
   LET (?x := "test").
   LET (?now := afn:now()).
}

?x gets the value "test", but ?now remains empty. Even when I update my 
Topbraid version to 3.4.0.v20101130-1222R. So how can I get this working?

The method adding two variables works okay when providing each variable with a 
cast. So thanks for this solution.

Kind regards, 
Pim

 


-----Original Message-----
From: [email protected] [mailto:[email protected]] 
On Behalf Of Scott Henninger
Sent: woensdag 1 december 2010 16:36
To: TopBraid Suite Users
Subject: [topbraid-users] Re: Adding 2 variables and getting the current date

Pim; I wonder if the selected variables are mismatching.  Start by trying 
SELECT *, i.e.

SELECT *
{  LET (?now := afn:now()).
}

The addition example will work, but do be careful about the types for the 
variables.  You an cast the type with xsd types, for example xsd:integer(?Xmin).

All of this works in 3.3.2, but you should consider upgrading to 3.3.x, or 
waiting for later today to upgrade to 3.4

-- Scott

On Dec 1, 6:18 am, "Helm, P.W. (Pim) van den" <[email protected]>
wrote:
> Hi all,
>
> I tried to add two variable via:
>   LET (?Xmax :=?Xmin + ?Length).
>
> And get a timestamp in a variable via:
>   LET (?now : = afn:now()).
>
> Both result in an unbound variable. What am I doing wrong?
>
> I am using TBC Maestro Edition  Version: 3.2.2.v20091223-2155R
>
> Kind regards,
> Pim
> This e-mail and its contents are subject to the DISCLAIMER 
> athttp://www.tno.nl/disclaimer/email.html

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