Hi Jens, I'll try the 7.6 version later today. This is a vaadin https://vaadin.com project which might be complex to set upŠ Following are the BaseX specifics that are used to initialize the DB and session. public static final DocumentBuilder BUILDER; public static final Context CONTEXT = new Context(); public static ClientSession SESSION = null; private static BaseXServer SERVER = null; static { try { BUILDER = DocumentBuilderFactory.newInstance().newDocumentBuilder(); if (SESSION == null) { SERVER = new BaseXServer(); SESSION = new ClientSession("localhost", 1985, "admin", "admin"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ try { SESSION.execute(new Open("db")); //$NON-NLS-1$ } catch (final BaseXException bxexNoDBCreatedYet) { final File emptyDB = getDB(new File(System.getProperty("catalina.base"))); //$NON-NLS-1$ SESSION.execute(new CreateDB("db", emptyDB.getPath())); //$NON-NLS-1$ SESSION.execute(new Open("db")); //$NON-NLS-1$ } } } catch (final IOException ioex) { throw new RuntimeException("Failed to initialize the BaseX server and a session to it.", ioex); //$NON-NLS-1$ } catch (final ParserConfigurationException pcex) { throw new RuntimeException("Failed to initialize the document builder.", pcex); //$NON-NLS-1$ } } I'll let you know how the new version tests go. What i forgot to mention is that the same statement executed from the BaseX UI work as expected. / Chris On 06/08/2013 12:05, "Jens Erat" <jens.erat@uni-konstanz.de> wrote:

Hi Chris,

this *definitely* shouldn't happen.

Could you try two things please:

1. Try with [BaseX 7.7 Beta] (close to release anyway) - we changed quite a bit with the logging, so chances are good that bug is gone anyway. As you're using BaseX as a jar, it should be a drop-in replacement. 2. Send me a complete example of the bug which I can execute (eg., including the `SESSION` declaration), so I can see what the problem was, anyway (and if it somehow could persist to the new version).

Regards, Jens

[BaseX 7.7 Beta]: http://files.basex.org/releases/latest/

-- Jens Erat

[phone]: tel:+49-151-56961126 [mail]: mailto:email@jenserat.de [jabber]: xmpp:jabber@jenserat.de [web]: http://www.jenserat.de

PGP: 350E D9B6 9ADC 2DED F5F2 8549 CBC2 613C D745 722B

Am 06.08.2013 um 10:36 schrieb <ext-christopher.harper@nokia.com>:

...

Hi @ll,

Re-sending from different address due to original message disappearing.

When running BaseX as a server and connecting to it my update statements are successful but when using BaseX from a jar inside the JVM ­ Database creation works fine ­ the update statements don't get committed ­ not visible to other clients or after restart ­ to the database.

Select queries work fine.

Code that ­ no exception ­ fails is:

final String xQueryUpdate = String.format("for $tab in doc('db')//tabs/tab[@id='%s'] return replace node $tab/content with %s", tabId, value); //$NON-NLS-1$ try { synchronized (SESSION) { new ClientQuery(xQueryUpdate, SESSION, SESSION.getOutputStream()).close(); // System.out.println(new XQuery(xQueryUpdate).execute(CONTEXT)); SESSION.notify(); } } catch (final IOException ioex) { ioex.printStackTrace(); }

When trying to use XQuery - In comment ­ I get:

org.basex.core.BaseXException: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk@mailman.uni-konstanz.de Version: BaseX 7.6 Java: Oracle Corporation, 1.7.0_10-ea OS: Mac OS X, x86_64 Stack Trace: java.nio.channels.OverlappingFileLockException sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255) sun.nio.ch.SharedFileLockTable.add(FileLockTable.java:152)

What might be the issue or have I misunderstood something?

/ Chris _______________________________________________ BaseX-Talk mailing list BaseX-Talk@mailman.uni-konstanz.de https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk

Hi Christian, Thanks, that sorted the issue! What threw me was that queries that do a select don't need the execute call in order to work: final String xQuery = String.format("for $tab in doc('db')//tabs/tab[@id='%s'] return data($tab/content/h3)", //$NON-NLS-1$ this.tabId); final ClientQuery checkQuery = new ClientQuery(xQuery, SSCCE.SESSION, SSCCE.SESSION.getOutputStream()); try { if (checkQuery.more()) { System.out.println(checkQuery.next()); } } finally { checkQuery.close(); } So likely more calls execute... I sent a SSCCE to Jens yesterday. / Chris On 07/08/2013 01:05, "Christian Grün" <christian.gruen@gmail.com> wrote:

Hi Christoph,

two little observations that might help you to improve your queries:

...

new ClientQuery(xQueryUpdate, SESSION, SESSION.getOutputStream()).close();

You need to execute your query, otherwise, this will be a no-op operation:

ClientQuery cq = SESSION.query(xQueryUpdate); cq.execute(); cq.close();

...

// System.out.println(new XQuery(xQueryUpdate).execute(CONTEXT));

In this line, you are a circumventing the client/server context, which could lead to your error message.

If you manage to create a minimized example, that¹d be helpful.

Best, Christian