BaseX-Talk February 2010

basex-talk@mailman.uni-konstanz.de

21 participants
19 discussions

XQJQuery Example
by sohguanh＠yahoo.com.sg 12 Feb '10

12 Feb '10

Hi, I just downloaded BaseX and intend to try running the example code. For XQJQuery.java I am having problem. I get below error. UnsupportedClassVersionError: Bad version number in .class file. I am trying to use the BaseX implementation of XQJ API only. I intend to explore the BaseX XML database related features later on.

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Videos of BaseX in action
by Dave Ashton 11 Feb '10

11 Feb '10

Our project is developing Open Source procedures and tool/s to automate the gathering of metadata from evidence artefacts collected during digital forensic examinations and visualise the relationships between actors => objects using existing Knowledge Discovery and Social Network Analysis technique. We are currently using BaseX to store the gathered information and have been very impressed by its performance so far. So much so we have posted two videos of it in action on YouTube. You can access them from oursite<http://www.osvisnet.co.cc/index.php?option=com_content&view=category&layout…>at or directly at YouTube by searching for OsVisNet. Thanks for all your hard work for making this possible. Regards Dave Project Founder

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Well done!
by ep＠ardec.com 11 Feb '10

11 Feb '10

Congrats for your efforts and well done product. I've worked with Berkeley dbxml, eXist, and Mark Logic. So I really appreciate the clean api, speed!, and compactness. Keep up the great work! Do you have roadmap somewhere? I'd like to get an idea where you are headed with development and if you could use any assistance. Best, Erik Peterson

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Re: [basex-talk] Full-text speed
by Thomas Goossens 10 Feb '10

10 Feb '10

[sorry for the previous message, my mistake] Hello Christian, thanks for your very fast reply (in middle of the night...) Indeed the query you gave me runs much faster. But... 1) that's not my query: I was using 'all words', and my query still runs without index. 2) I think that 'text() 'is not equivalent to '.'. For example I could not use text() here //SPEECH[ . contains text "romeo juliet" all words] By the way, this query just doesn't work (while it should return 42 hits). Never mind, I am sure you will fix that soon. Cheers. On Thu, Feb 11, 2010 at 12:42 AM, Christian Grün <christian.gruen(a)gmail.com>wrote: > Hi Thomas, > > your query will be evaluated much faster if you rewrite it to.. > > //LINE[ text() contains text "romeo juliet"] > > This query should take ~3-5 ms on the 7.5mb Shakespeare instance. > > You can have a look into our XQuery documentation > (http://basex.org/xquery, Section »Query Evaluation«) to get more > insight on query compilation and how to utilize the index structures. > > Hope this helps, > Christian >

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Database creation error on Windows Vista SP 2 64-bit
by dnm＠pobox.com 04 Feb '10

04 Feb '10

Hi there, I recently downloaded and tried to use BaseX 6 on Windows Vista SP 2 64-bit. I'm consistently experiencing an error message whenever I try to create a database (which seems to be necessary even when trying to open a database). I'm using BaseX in GUI mode. I've seen this behavior with both the BaseX6.exe version (initially) and the .jar as packaged in the BaseX6.zip archive (as a second test). I've included a link to a PNG file below which will hopefully show up. http://dl.dropbox.com/u/395437/basex6-db-creation-error.png Thanks in advance for any help!

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BaseX server without X Window System on Linux
by Steven Anderson 03 Feb '10

03 Feb '10

My Linux server doesn't have X. When I try to run the BaseX server, with the command: java -Xmx1024m -jar BaseX.jar org.basex.BaseXServer I get the following error: No X11 DISPLAY variable was set, but this program performed an operation which requires it. Can I run the server without X? Steve

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bug in namespace resolution after inserts
by Rares Vernica 03 Feb '10

03 Feb '10

Hello, I think there might be a bug in namespace resolution after an insert. I have two xml files: doc.xml <?xml version="1.0" encoding="UTF-8"?> <doc xmlns:a="http://a"> <a:x>1</a:x> </doc> doc2.xml <?xml version="1.0" encoding="UTF-8"?> <r xmlns="http://b" xmlns:a="http://a"> <a:x>2</a:x> </r> I create database "doc" from "doc.xml". Then, I preform the following insert query: declare namespace a = "http://a"; declare namespace b = "http://b"; insert nodes doc("doc2.xml")/b:r/a:x into basex:db("doc")/doc and the result is: <doc xmlns:a="http://a"> <a:x>1</a:x> <a:x xmlns="http://b">2</a:x> </doc> but basex:db("doc")/doc/a:x returns <a:x xmlns:a="http://a">1</a:x> Cheers, Rares

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BaseX 6 GUI does not start properly
by Rares Vernica 02 Feb '10

02 Feb '10

Hello, I used BaseX GUI before version 6 successfully. Version 6 GUI does not start properly and throws a lot of exceptions. Here is the first one: Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at sun.java2d.SunGraphics2D.addRenderingHints(SunGraphics2D.java:1295) at org.basex.gui.layout.BaseXBack.paintComponent(BaseXBack.java:62) at org.basex.gui.view.ViewContainer.paintComponent(ViewContainer.java:114) at javax.swing.JComponent.paint(JComponent.java:1029) at org.basex.gui.view.ViewContainer.paint(ViewContainer.java:269) at javax.swing.JComponent.paintToOffscreen(JComponent.java:5124) at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:278) at javax.swing.RepaintManager.paint(RepaintManager.java:1220) at javax.swing.JComponent._paintImmediately(JComponent.java:5072) at javax.swing.JComponent.paintImmediately(JComponent.java:4882) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:803) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:714) at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:694) at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:128) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) The main window loads but it is empty. If I hover over the window with my mouse, the buttons start appearing. Anyway, it is unusable. I do not have this issue with 5.7. Here is the Java version that I use: > java -version java version "1.6.0_16" Java(TM) SE Runtime Environment (build 1.6.0_16-b01) Java HotSpot(TM) Client VM (build 14.2-b01, mixed mode, sharing) The computer is a 32bit PC with the latest Ubuntu OS. Thank you for BaseX. Keep up the good work! Cheers, Rares Vernica

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FileTransit - Product Submission Approved
by FileTransit 01 Feb '10

01 Feb '10

Dear Developer, Your product, BaseX, has been published today on our site. Category: Windows Software / Programming / Database Tools Name: BaseX URL: http://www.filetransit.com/view.php?id=35541 Best Regards, FileTransit Team. http://www.filetransit.com/ Â© 1998-2010 FileTransit.com

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BaseX-Talk February 2010