BaseX-Talk March 2012

basex-talk@mailman.uni-konstanz.de

48 participants
60 discussions

Updates failing due to "opened by another client" on a system running only basexhttp
by Charles Duffy 30 Mar '12

30 Mar '12

Howdy -- I recently had an update run via the REST interface fail due to the database being "opened by another client". This would be unsurprising were it taking place on a workstation where a concurrent process such as basexgui might have been running, but the host in question was a server, with its basexhttp instance controlled by system init scripts, running as a dedicated user, and otherwise unlikely to be interfered with by a separate process. There are, however, multiple concurrent REST clients using that same HTTP server. As basexhttp should be the only service directly accessing the underlying database on this host, this surprises me -- my expectation is that the transaction monitor would defer any execution of an update until a full lock could be grabbed, preventing it from interfering with other read or update actions happening within the same process. Is this expectation valid? If not, what do I need to do to be able to apply updates to a database with minimal disruption to readers?

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Declarations for external variables not enforced
by Charles Duffy 30 Mar '12

30 Mar '12

Howdy -- Using the REST interface, I'm currently able to do the following: <rest:query xmlns:rest="http://basex.org/rest"> <rest:text>$foo</rest:text> <rest:variable name="foo" value="bar"/> </rest:query> ...and get back "bar" as a result. Note the lack of a "declare variable $foo external" line. I haven't read the spec to determine permissibility of this behavior, but it does come in handy at times (particularly, for permitting maximally terse one-liners). Is this something likely to go away in the future? Thanks!

4 3

Out-of-band logging from XQuery functions
by Charles Duffy 29 Mar '12

29 Mar '12

Howdy -- Is any mechanism available for queries to log errors out-of-band without modifying their return values? Something like a wrapper around log4j would be perfect; right now I'm using file:append(), but as this requires my queries to know where the system administrator wants things to be logged to (which should be an entirely separate concern), it's very far from ideal.

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wie geht es dir$
by areaurbana 29 Mar '12

29 Mar '12

1 0

Using stemming via the BaseX API
by Michael Wilson 27 Mar '12

27 Mar '12

I’m working on a hobbyist project of mine, and am having trouble with stemming when running queries from a java app (I’m using the BaseX API to search XML japanese dictionary files via a custom swing/GUI application). Specifically, I receive the error message: “[FTST0009] No tokenizer available for language 'Japanese'.” I do have the etc/ja folder present. This problem does not occur when I run the same query from the BaseX GUI. I replicated the same class path I observed in the basexgui.bat file: I added basex.jar, igo-0.4.3.jar, lucene-stemmers.3.4.0.jar, xml-resolvers-1.2.jar, tagsoup-1.2.jar to the Path environment variable, but it didn’t help. Does anyone have any ideas on how I can make stemming work from my application? I appreciate any insights or solutions.

3 2

CSV, text equivalents to json:parse() and parse-xml()?
by Charles Duffy 27 Mar '12

27 Mar '12

Howdy -- For JSON and XML, mechanisms to generate an in-memory document from an xs:string() exist. For CSV or text inputs, however, I'm unclear on how to do this without declaring options and invoking db:add() -- not ideal when the content being handled is intended only for transient, one-time-only processing. Pointers? (If there exists a mechanism to invoke any available parser without necessarily creating a new database, this would be ideal). Thanks!

2 1

Mechanism to serialize maps in output?
by Charles Duffy 27 Mar '12

27 Mar '12

Howdy -- Right now, trying to inspect a map (ie. returning one from a query) results in FOTY0012. This is unfortunate from the perspective of allowing users to examine the objects their logic creates. Has thought been given to defining a serialization-friendly way of representing maps, perhaps as XML entities under their own namespace?

4 3

Usin Basex for Desktop Application
by Sandeep Yohans 27 Mar '12

27 Mar '12

Hello Sir/Madam, I am interested in using BaseX for my Desktop Application which I am developing using Java SE. Is it possible to use BaseX in a Desktop Application (Standalone Application) which will be installed on a computer with no internet connection or intranet? Looking forward to hear from you. -- Sandeep Yohans Developer AIR Infotech Nagpur - India www.airinfotech.in

2 1

How I can use Basex as embedded python datastorage?
by Andrey Ganyushkin 26 Mar '12

26 Mar '12

Hi All How I can use Basex as embedded python datastorage? It's possible? I can't find the answer to this question. -- BEST REGARDS, Andrey Ganyushkin

3 4

BaseX has been updated on Filecluster.com
by FileCluster Support 24 Mar '12

24 Mar '12

Dear Developer, You have received this email because we have updated BaseX and this was the contact email for the application. Your application update status BaseX has been updated on FileCluster.com to the 7.2.1-SNAPSHOT version. You can check out your application on our site at: http://www.filecluster.com/Business-Office/Database-Management/Download-Bas… If you want to let your users know about your software page on FileCluster.com, to rate it and review it, you can also use this banner to link it: Promote your software As a software website, it`s our duty to help the developers promote their software. Fortunatelly, our software promotions are cost free, for more informations please visit our promotion page. Submit your press releases We are also accepting press releases from software developers. All you have to do is to submit your press release and we will take care of the rest. Useful developer links All the essential links you need as a developer on FileCluster.com: Link to us - download banners or text links for linking to FileCluster.com Submit your software - Submit your software via PAD or manually Submit your press release - submit your press releases using our online form Contact Us - contact our editors Promote your software - our promotions page If you do not wish to receive any further notifications or confirmations from FileCluster.com, please send us an email and request a contact removal (email removal). Keep in mind that this means you will not receive ANY contact from us, including: software promotions, update confirmations or security alerts (antivirus and spyware test results). Regards, Renta Cezar - Senior Editor FileCluster Labs www.filecluster.com

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BaseX-Talk March 2012