Dear Aaron (and thanks Kendall),

A little addendum: If you use Java’s try-with-resources statement…

   try (LocalSession session = new LocalSession(this.context))

…there will be no need to manually close your connection.

Best,
Christian

On Fri, Mar 10, 2017 at 10:47 PM, AJ Weber <aweber@comcast.net> wrote:
 OK, changing this so that the code flows like yours works much, much better.
 I now return all 3 documents I expect are in the database.

 FOLLOW-UP Question:  How do I close the database properly with these
 classes?  I had been doing a context.closeDB() when shutting-down.  Do I
 just do a localSession.close() now?  Or do I need to do both?

 Thanks again!!!

 On 3/10/2017 4:27 PM, AJ Weber wrote:

 Well, one difference I spot is that I am opening (via the snippet I sent
 before) the database BEFORE creating a LocalSession and I am using the new
 Check(...).execute(context);

 The "context" is kept in the object's class-level.

 Your code creates the context, associates the new LocalSession with the
 context, and THEN opens the existing database.  (That's more akin to how a
 JDBC session would go...but I did not see any java examples with this, I
 followed the examples on the java page and only found LocalSession via a
 google search.)

 There doesn't appear to be any details in the javadoc or anything I can find
 regarding how to use LocalSession, so I could be off base from that pov.

 -AJ

 On 3/10/2017 4:18 PM, Kendall Shaw wrote:

 This worked for me, where “test-local” contains a document:

         Context context = new Context();

         LocalSession s = new LocalSession(context);

         s.execute(new Check("test-local"));

         try (Query q = s.query("for $doc in collection() return $doc")) {

             while (q.more()) {

                 System.out.println(q.next());

             }

         }

 But, why your code isn’t working could be useful to know. It seems like
 there are some details left out.

 Kendall

 From: <basex-talk-bounces@mailman.uni-konstanz.de> on behalf of AJ Weber
 <aweber@comcast.net>
 Date: Friday, March 10, 2017 at 11:40 AM
 To: "basex-talk@mailman.uni-konstanz.de"
 <basex-talk@mailman.uni-konstanz.de>
 Subject: Re: [basex-talk] Simple query

 On 3/10/2017 2:24 PM, Kendall Shaw wrote:

 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.

 Yes, I did not include my code to open the database.  There is a database
 open and this does not throw an exception, it just returns no results.

 In my constructor of this class there is the following code:
 new Check(this.MyID).execute(context);

 (MyID is a String identifying the database I want to work with exclusively
 with this context passed.)

 As I mentioned in a separate post, my query where matches(uri...) works
 fine...every time.  That query also does not have a specific collection in
 the query.

 Kendall

 From: <basex-talk-bounces@mailman.uni-konstanz.de> on behalf of AJ Weber
 <aweber@comcast.net>
 Date: Friday, March 10, 2017 at 6:44 AM
 To: Fabrice ETANCHAUD <fetanchaud@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-bounces@mailman.uni-konstanz.de
 [mailto:basex-talk-bounces@mailman.uni-konstanz.de] De la part de Aaron
 Weber
 Envoyé : jeudi 9 mars 2017 00:31
 À : 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