BaseX-Talk February 2011

basex-talk@mailman.uni-konstanz.de

26 participants
48 discussions

Maven Repository
by Christian Grün 11 Feb '11

11 Feb '11

Hi there, to all of you working with Maven: we've just moved our Maven repository to the basex.org domain. The new address is: http://files.basex.org/maven We've also updated the Maven artifacts in our documentation: http://docs.basex.org/wiki/Maven Next, we're currently working on automating the Maven deployment to guarantee that the latest snapshots can be integrated in your projects as well. And, last but not least, BaseX will soon be available via Debian and APT. Christian ___________________________ Christian Grün Uni KN, Box 188 78457 Konstanz, Germany http://www.inf.uni-konstanz.de/~gruen

4 3

data corruption
by e.e.h.lastdrager＠student.utwente.nl 10 Feb '11

10 Feb '11

Hello, Unfortunately I am unable to use BaseX (6.5) as I keep getting data corruption. I run BaseX on a dedicated server. The xml-datafiles I insert into the database have the following layout: <EEGData bla="x" > <signal name="x"> <timeslot start="2008-07-24T14:22:16">-53.2942688282 -37.5091841347 -35.6337285276 (many more values)</timeslot>  </signal>  </EEGData> Running "list" on the client returns the following: Name Documents Size Path ------------------------------------------------------------------------ ------------------ fullxml 3789 522153128560 /path/to/xml This database was created by running the command: java -cp basex.jar org.basex.BaseXClient -c "create db fullxml /path/to/xml/files/" The problems start when I execute the "list fullxml" command, this returns: > list fullxml Possible bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 6.5 Java: Sun Microsystems Inc., 1.6.0_17 OS: Linux, amd64 Stack Trace: java.lang.ArrayIndexOutOfBoundsException: 48 org.basex.util.Compress.pull(Compress.java:143) org.basex.util.Compress.unpack(Compress.java:103) org.basex.data.DiskData.txt(DiskData.java:206) org.basex.data.DiskData.text(DiskData.java:173) org.basex.core.cmd.ListDB.run(ListDB.java:48) org.basex.core.Command.run(Command.java:292) org.basex.core.Command.exec(Command.java:274) org.basex.core.Command.execute(Command.java:67) org.basex.server.ServerProcess.run(ServerProcess.java:172) I randomly queried some XML documents and they looked correct, but after some searching I found a few problematic ones. When queried, the (text)nodes contain garbage like this one: <timeslot start="2008-07-25T11:21:46">HLAD IIrHEHAHIimimO Ga 1YI G@OXba O GW O O OI1R? O</timeslot> Weirdly enough, the attributes are correct. > info storage 230000000 230000010 PRE DIS SIZ ATS NS KIND CONTENT ------------------------------------------------------------------------ -------------------- 230000000 1 1 1 0 ATTR start="2006-09-05T15:21:22" 230000001 2 1 1 0 TEXT 4EpfL AchD KIAEAEA ABAH IIGRmI I 9mr0LHIKDIIII OIKA 230000002 1698 3 2 0 ELEM timeslot 230000003 1 1 1 0 ATTR start="2006-09-05T15:21:23" 230000004 2 1 1 0 TEXT yoio i o gcyg@hBP i gA kd o RrP kbad n gJua a3kd gA o 230000005 1701 3 2 0 ELEM timeslot 230000006 1 1 1 0 ATTR start="2006-09-05T15:21:24" 230000007 2 1 1 0 TEXT 4EUAHIO rRjRNJNJNLATO N iYOIO KcHADIKTO NIGXLANAIAD 230000008 1704 3 2 0 ELEM timeslot 230000009 1 1 1 0 ATTR start="2006-09-05T15:21:25" 230000010 2 1 1 0 TEXT mIIKEAH GXDA ACIIIO GaIimO Retrieving all timeslot nodes within this document is not possible and results in an error: Error: Possible bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 6.5 Java: Sun Microsystems Inc., 1.6.0_17 OS: Linux, amd64 Stack Trace: java.lang.ArrayIndexOutOfBoundsException: 32 org.basex.util.Compress.pull(Compress.java:127) org.basex.util.Compress.unpack(Compress.java:112) org.basex.data.DiskData.txt(DiskData.java:206) org.basex.data.DiskData.text(DiskData.java:173) org.basex.data.Serializer.node(Serializer.java:298) org.basex.data.Serializer.node(Serializer.java:259) org.basex.query.item.DBNode.serialize(DBNode.java:110) org.basex.query.item.FElem.serialize(FElem.java:245) org.basex.core.cmd.AQuery.query(AQuery.java:97) org.basex.core.cmd.XQuery.run(XQuery.java:22) org.basex.core.Command.run(Command.java:292) org.basex.core.Command.exec(Command.java:274) org.basex.core.Command.execute(Command.java:67) org.basex.server.ServerProcess.run(ServerProcess.java:172) Furthermore, I cannot delete the problematic documents: > delete a0008788.edf.xml Possible bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 6.5 Java: Sun Microsystems Inc., 1.6.0_17 OS: Linux, amd64 Stack Trace: java.lang.ArrayIndexOutOfBoundsException: 32 org.basex.util.Compress.pull(Compress.java:143) org.basex.util.Compress.unpack(Compress.java:107) org.basex.data.DiskData.txt(DiskData.java:206) org.basex.data.DiskData.text(DiskData.java:173) org.basex.core.cmd.Delete.run(Delete.java:36) org.basex.core.Command.run(Command.java:292) org.basex.core.Command.exec(Command.java:274) org.basex.core.Command.execute(Command.java:67) org.basex.server.ServerProcess.run(ServerProcess.java:172) When running "info storage" on a document given a certain query, I also get an exception: > info storage db:open("fullxml/a0008788.edf.xml")/EEGData/signal[position()=1]/timeslo t[position()=1] Possible bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 6.5 Java: Sun Microsystems Inc., 1.6.0_17 OS: Linux, amd64 Stack Trace: java.lang.NullPointerException org.basex.data.DataPaths.find(DataPaths.java:93) org.basex.data.DataPaths.doc(DataPaths.java:79) org.basex.data.Data.doc(Data.java:213) org.basex.query.func.FNDb.open(FNDb.java:88) org.basex.query.func.FNDb.iter(FNDb.java:52) org.basex.query.QueryContext.iter(QueryContext.java:304) org.basex.query.expr.ParseExpr.value(ParseExpr.java:73) org.basex.query.func.Fun.comp(Fun.java:47) org.basex.query.path.Path.comp(Path.java:40) org.basex.query.QueryContext.compile(QueryContext.java:206) org.basex.query.QueryProcessor.compile(QueryProcessor.java:82) org.basex.query.QueryProcessor.execute(QueryProcessor.java:103) org.basex.query.QueryProcessor.queryNodes(QueryProcessor.java:182) org.basex.core.cmd.AQuery.queryNodes(AQuery.java:148) org.basex.core.cmd.InfoStorage.run(InfoStorage.java:41) org.basex.core.Command.run(Command.java:292) org.basex.core.Command.exec(Command.java:274) org.basex.core.Command.execute(Command.java:67) org.basex.server.ServerProcess.run(ServerProcess.java:172) The XML document itself is valid and I can import and query it in BaseX on my local machine without a problem. I even dropped the entire database and recreated it, with the same problem on the same file(s). It seems that after a certain amount of data, the database gets corrupted; all documents inserted after this point contain garbage. I also tried to create the database with "intparse" set to ON, but I get the same problem. Regards, Elmer

2 3

Jóga
by Jan Vlčinský (CAD) 10 Feb '11

10 Feb '11

http://joga.cz/index.php <http://joga.cz/index.php>Ale Přerov to moc kontaktů nenabízí. V Ostravě se mohu poptat, tam to celkem žije. Honza -- *Ing. Jan Vlčinský* CAD programy Slunečnicová 338/3, 734 01 Karviná Ráj, Czech Republic tel: +420-597 602 024; mob: +420-608 979 040 skype: janvlcinsky; GoogleTalk: jan.vlcinsky(a)gmail.com http://cz.linkedin.com/in/vlcinsky

1 0

Re: [basex-talk] Unable to create database from BasX 6.5.1 client - resolved (new version of client on old version of server)
by Jan Vlčinský (CAD) 10 Feb '11

10 Feb '11

Hi I already found the reason - I was having new version in my system, but still running previous version as a service. After restarting the service with new version of jar all works well. Sorry for bothering. Jan 2011/2/10 Jan Vlčinský (CAD) <jan.vlcinsky(a)cad-programs.com> > Sorry, I sent the e-mail before it was finished. > > I run on MS Windows. > > D:\opt\BaseX\bin>basexclient.bat > Username: admin > Password: > BaseX 6.5.1 [Client] > Try "help" to get more information. > > > create database bbc > Chcete ukončit dávkovou úlohu (A/N)? > ^CChcete ukončit dávkovou úlohu (A/N)? a > > With best regards > > Jan Vlčinský > > 2011/2/10 Jan Vlčinský (CAD) <jan.vlcinsky(a)cad-programs.com> > > Hi >> Using basex6.5.1.2791 beta I am trying to create database. >> Via BaseX GUI the command "create database test" works well. >> However, using basexclient it does nothing, resp. it does stop responding >> and I have to cancel the client. >> >> >> -- >> *Ing. Jan Vlčinský* >> CAD programy >> Slunečnicová 338/3, 734 01 Karviná Ráj, Czech Republic >> tel: +420-597 602 024; mob: +420-608 979 040 >> skype: janvlcinsky; GoogleTalk: jan.vlcinsky(a)gmail.com >> http://cz.linkedin.com/in/vlcinsky >> >> > > > -- > *Ing. Jan Vlčinský* > CAD programy > Slunečnicová 338/3, 734 01 Karviná Ráj, Czech Republic > tel: +420-597 602 024; mob: +420-608 979 040 > skype: janvlcinsky; GoogleTalk: jan.vlcinsky(a)gmail.com > http://cz.linkedin.com/in/vlcinsky > > -- *Ing. Jan Vlčinský* CAD programy Slunečnicová 338/3, 734 01 Karviná Ráj, Czech Republic tel: +420-597 602 024; mob: +420-608 979 040 skype: janvlcinsky; GoogleTalk: jan.vlcinsky(a)gmail.com http://cz.linkedin.com/in/vlcinsky

1 0

Unable to create database from BasX 6.5.1 client
by Jan Vlčinský (CAD) 10 Feb '11

10 Feb '11

Hi Using basex6.5.1.2791 beta I am trying to create database. Via BaseX GUI the command "create database test" works well. However, using basexclient it does nothing, resp. it does stop responding and I have to cancel the client. -- *Ing. Jan Vlčinský* CAD programy Slunečnicová 338/3, 734 01 Karviná Ráj, Czech Republic tel: +420-597 602 024; mob: +420-608 979 040 skype: janvlcinsky; GoogleTalk: jan.vlcinsky(a)gmail.com http://cz.linkedin.com/in/vlcinsky

1 1

FileGuru: BaseX 6.5 Published Today at FileGuru
by FileGuru 09 Feb '11

09 Feb '11

Dear BaseXWe are www.fileguru.com Editors. We have published your software BaseX 6.5 today in our site. Watch your listing here: Location: http://fileguru.com/BaseX/info Category: Development \ Database Your software has been reviewed and received 5 of 5 stars award. We like to congratulate you for this great useful software. Please feel free to display the award on your website and promotional materials. We recommend you to link your software, because this link will increase your ranking in the search engine and categories. And your software should be visible on the top! So, to provide a link to FileGuru from your site, you can find nice buttons at http://www.fileguru.com/linkus You can link to your software info page http://fileguru.com/BaseX/info Sincerely yours, FileGuru Team - http://www.fileguru.com © 2000-2010, FileGuru.

1 0

searching against base-uri
by David leigh 08 Feb '11

08 Feb '11

When I search against lyrics in my song database using "contains text", text is found where ever the input string is found, even if the string is simply part of a word. So "wor" would find "word". If I search with base-uri($song)[ . contains text "wor"] the results are interesting. Say I have the following files in my database: c:\song\music in the air c:\songs1\songbird review c:\songs2\songbird cafe c:\lyrics\songbirds singing c:\Songs3\I like to sing c:\Songs4\Songs worth singing searching with base-uri($song)[ . contains text "song"] will return: c:\song\music in the air c:\songs1\songbird review c:\songs2\songbird cafe c:\lyrics\songbirds singing c:\songs4\Songs worth singing searching with base-uri($song)[ . contains text "songs"] will return: c:\songs4\Songs worth singing My conclusion is that after the last slash (and in the database, of course, they are forward slashes) the string can be found as a substring but before the last slash, the string must be found as that whole section of the path (I've tried this with multi-word path sections and the entire path section must be specified or that node is not selected.) This is not particularly troubling, but I'd like to confirm that the behavior is expected. It would appear that the indexing is different for these file system path sections than for the actual file name at the end of the path (which appears to be indexed like all the other text). Can someone confirm this? Thanks!

2 1

Is there a way to not wrap results in jax-rx:results and jax-rx:result
by software developer 08 Feb '11

08 Feb '11

Hi, Since the queries to a collection over REST typically result in XML being returned, is there a way to turn off the wrapping of results in jax-rx:results and jax-rx;result elements? Thanks.

3 12

order nodes by dateTime
by Sony Vijay 07 Feb '11

07 Feb '11

Hi, I am using BaseX 6.5 database. Say I have the documents : doc1, doc2 in my database and the first child node of these documents is "updatedTime". Say the "updatedTime" node of doc1 and doc2 have the values : 2011-02-07T14:40:00.78-05:00 and 2011-02-07T14:41:02.133-05:00 respectively. I am trying to return a sorted list of document names in the descending order of the updatedTime node. I tried the following xquery: for $doc_name in db:list() order by xs:dateTime(doc($doc_name)/updatedTime) descending return $doc_name The output I receive is [doc1, doc2]. But, the expected output is [doc2, doc1]. I tried both ascending and descending in the order by statement but I get the same output. I am not sure how the ordering of elements by dateTime works. Could you help? Thanks, Sony PS: This is a simplified version of my code. The actual nodes have namespace prefixes. I hope the solution would be consistent when namespaces are used.

1 1

Retrieving the parent nodes of full-text search results
by Sony Vijay 07 Feb '11

07 Feb '11

Hi, Is there a way to retrieve the parent/ancestor nodes of the full-text search results of a basex database ? For instance, consider I have a document named 'feed1', 'feed2', 'feed3' in my database. A sample document ('feed1') looks as follows: <feed> <id>1</id> <updated>2011-02-07T07:10:49.588Z</updated> <title>feed1</title> <entry> <id>59</id> <title>Feed1 Root Package</title> <updated>2011-02-07T07:11:01.324Z</updated> </entry> </feed> The following xquery: for $doc_name in db:list() return (ft:extract(doc($doc_name)/feed/entry/*[text() contains text 'Root Package'])) outputs the following result as expected : <title>Feed1 Root Package</title> But, is there a way to retrieve the parent and ancestor nodes of the resulting <title> node, meaning is there a way I can output the 'id' of the entry and 'id' of the feed as well. The desired output could be: [<title>Feed1 Root Package</title>, <id>59</id>, <id>1</id>]. Thanks, Sony

2 1

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BaseX-Talk February 2011