Re: [basex-talk] Simple query

[Kendall Shaw]

Michael Seiferle gave the answer already, I think. What would collection() be 
referring to? How would BaseX know what to return? Probably there is no 
database specified. Presumably, in the GUI you have opened a database.

Kendall


From: <basex-talk-boun...@mailman.uni-konstanz.de> on behalf of AJ Weber 
<awe...@comcast.net>
Date: Friday, March 10, 2017 at 6:44 AM
To: Fabrice ETANCHAUD <fetanch...@groupefbo.com>, 
"basex-talk@mailman.uni-konstanz.de" <basex-talk@mailman.uni-konstanz.de>
Subject: Re: [basex-talk] Simple query

On 3/9/2017 3:46 AM, Fabrice ETANCHAUD wrote:
Hello Aaron,

You would learn faster by using the BaseXGUI application,
You will benefit from syntax highlighting, real time execution, and hits on 
function signatures.
I am trying the GUI now.  It is an excellent tool!

However, issuing the same exact XQuery in the GUI returns 3 documents (which is 
what I would have originally expected).

Maybe it is an issue with how I setup my query in java?  Here is my code:

        try (LocalSession session = new LocalSession(this.context)) {
            //test

            try (Query q = session.query("for $doc in collection() return 
$doc")) {
                while (q.more()) {
                    LOG.debug("RESULT: " + q.next());
                }
            }
        }
        catch (Exception e) {
            LOG.error("Could not execute query " + statement, e);
        }



Best regards,
Fabrice

De : 
basex-talk-boun...@mailman.uni-konstanz.de<mailto:basex-talk-boun...@mailman.uni-konstanz.de>
 [mailto:basex-talk-boun...@mailman.uni-konstanz.de] De la part de Aaron Weber
Envoyé : jeudi 9 mars 2017 00:31
À : 
basex-talk@mailman.uni-konstanz.de<mailto:basex-talk@mailman.uni-konstanz.de>
Objet : [basex-talk] Simple query

Newbie alert.

I'm trying to get my feet wet with BaseX, and in doing so, am trying to 
understand XQuery and how to apply it to a database full of documents (not just 
a single document that is typically queried).

I am using Java and can post my code, but with a LocalSession, and a query, the 
following produces 0 results.

For $doc in collection() return $doc

I realize there's no "where", and in the sql world that would match all. Maybe 
not in XQuery?

Obviously just a test query, but I need to start somewhere. :-)

Thanks for any help!
--
AJ