BaseX-Talk

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4 participants
5268 discussions

Full-text search and mixed content
by Michael Piotrowski 27 Jun '12

27 Jun '12

Hi, In "XQuery and XPath Full Text 1.0 Use Cases" [1] it says: Querying across element boundaries is similar to an XQuery and XPath character string function converting the sub-tree under an element into a string by removing all markup. However, I'm having trouble to get this to work in BaseX 7.2.1. For example, given this document: <doc> Lorem ipsum dolor sit amet Lorem ipsum dolor sit amet Lorem ipsum dolor sit amet Lorem ipsum dolor sit amet </doc> How do I query, for example, for p elements that contain the string "sit amet"? //p[. contains text 'sit amet'] returns only paragraphs 1 and 2. I've tried a number of variations, but I've been unable to come up with a query that returns all four p elements. Are my queries incorrect or is this a bug in BaseX? Thanks and best regards Footnotes: [1] <http://www.w3.org/TR/xpath-full-text-10-use-cases/> -- Dr.-Ing. Michael Piotrowski, M.A. <mxp(a)cl.uzh.ch> Institute of Computational Linguistics, University of Zurich Phone +41 44 63-54313 | OpenPGP public key ID 0x1614A044 * OUT NOW: Systems and Frameworks for Computational Morphology * <http://www.springeronline.com/978-3-642-23137-7>

5 27

how to formulate an excluding xquery?
by Cerstin Mahlow 27 Jun '12

27 Jun '12

Hi, in my project, users look for text nodes containing certain words. However, some of these queries result in a very large number of hits, with a lot of irrelevant ones. Is it possible to search with excluding xqueries? For example in this document A B C D E F A B D E F C A B D E F A B D F when looking for [text() contains contains text "A" ftand "B" ftand "E" ordered distance at most 3 words] I would like to make explicit, that "C" should not occur at all, to ensure to find only the third node, not the first nor second one -- i.e., "C" should not occur outside the sequence, nor inside the sequence. Is this possible at all? Can I also specify a query where "C" would be allowed to occur outside the sequence, like in the second node, but not inside like in the first node? Or the other way around? Best regards Cerstin -- Dr. phil. Cerstin Mahlow Universität Basel Departement Sprach- und Literaturwissenschaften Fachbereich Deutsche Sprach- und Literaturwissenschaft Nadelberg 4 4051 Basel Schweiz Tel: +41 61 267 07 65 Fax: +41 61 267 34 40 Mail: cerstin.mahlow(a)unibas.ch Web: http://www.oldphras.net ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

2 4

log files
by Cerstin Mahlow 27 Jun '12

27 Jun '12

Hi, where are the log files stored? I recently copied the basex/data directory to another computer via scp and I saw that files like "2012-05-04.log" have been copied, too. But I do not find them in the original directory and also not in the target directory. Best regards Cerstin -- Dr. phil. Cerstin Mahlow Universität Basel Departement Sprach- und Literaturwissenschaften Fachbereich Deutsche Sprach- und Literaturwissenschaft Nadelberg 4 4051 Basel Schweiz Tel: +41 61 267 07 65 Fax: +41 61 267 34 40 Mail: cerstin.mahlow(a)unibas.ch Web: http://www.oldphras.net ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

2 1

full text search collation
by alxarch 26 Jun '12

26 Jun '12

Hi I have a question relating to full text search. I am trying to use it with Greek texts and the default collation assumes that ά != α In short, accented vowels are treated as different letters. Is this something that has to do with the collation used not being Greek, or does it have something to do with the tokenizer? As a side question i noticed that the stemmers used from lucne are quite outdated. 3.6.0 also includes a Greek stemmer. I tried to include the 3.6.0 stemmers instead but language codes seem to be hardcoded in util/ft/Language.java Any chnce of that part of the code being updated to use the latest stemmers so more languages can be integrated? (i am not proficient in java myself unfortunately so i can't directly help) thanks, Alex

5 15

Validation Module
by Seenivasan Gunabalan 25 Jun '12

25 Jun '12

Hi all, I am trying to validate an incoming xml post message against an xsd stored inside the basex. But I am getting this error [FODC0002] Resource 'sampledb/xsd/match.xsd' does not exist. I am sure the path is correct and the xsd file exists there. May I know where I am going wrong? try { let $doc := |<simple:||root| |xmlns:simple=||'http://basex.org/simple'||/>| return validate:xsd($doc,'sampledb/xsd/match.xsd') } catch BXVA0001 { 'Validation failed.' } Thanks in advance.

2 4

BaseXClient
by Willian Barcella 24 Jun '12

24 Jun '12

Hi All, I builded a kind of connection pool using BaseXClient.java class, I simulated several users trying insert documents in BaseX, the result was a disaster. ERROR: data.BaseXDataAccess - Error closing db java.io.IOException: Stopped at line 1, column 19: Unknown command: 1340477810253095000. Try HELP. at data.BaseXClient.execute(BaseXClient.java:99) at data.BaseXClient.execute(BaseXClient.java:110) at data.BaseXDataAccess.save(BaseXDataAccess.java:169) at data.TestInsert$Insert.run(TestInsert.java:88) at java.lang.Thread.run(Thread.java:680) Exception in thread "Thread-1" java.lang.RuntimeException: java.io.IOException: at data.BaseXDataAccess.save(BaseXDataAccess.java:164) at data.TestInsert$Insert.run(TestInsert.java:88)ERROR: com.xftec.hyperion.data.BaseXDataAccess - Error closing db I started several threads each one takes a BaseXClient connection and as soon as it finishs its job BaseXClient is put in a queue again to be took by other thread.

3 14

deadlock in BaseXServer 6.2.7
by Godmar Back 23 Jun '12

23 Jun '12

Hi, we're observing that our BaseXServer 6.2.7 deadlocks. The stack traces are here: http://top.cs.vt.edu/~gback/bx/deadlock-6.2.7/basex-deadlock.txt Could you take a look to see if these ring any bells? Has this problem been addressed in a more recent version? - Godmar

3 5

safe to upgrade from 6.6.3 SNAPSHOT to 7.3?
by Godmar Back 23 Jun '12

23 Jun '12

Also - is it safe to upgrade to 7.3? We now have production data (or at least the beginnings thereof) in our BaseXData directory. Is the binary format still the same, or do we need to export/reimport the XML? - Godmar

1 0

Data layer - Java
by Henrique Oliveira 22 Jun '12

22 Jun '12

Hi, Have anybody implemented a data layer using BaseXClient? Regards -- Henrique Oliveira

1 0

BaseXClient for Java
by Henrique Oliveira 20 Jun '12

20 Jun '12

Hi, Is safe to use a BaseXClient object accessed by several threads writing, readin, etc? It seems not being a thread safe.. Regards -- Henrique Oliveira

2 1

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