BaseX-Talk

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5251 discussions

Fwd: [dita-users] [ANN] XML Prague 2019 - Call for Proposals
by Maximilian Gärber 23 Oct '18

23 Oct '18

Just cross-posting to the Basex list ;-) ---------- Forwarded message --------- From: Jirka Kosek jirka(a)kosek.cz [dita-users] <dita-users(a)yahoogroups.com> Date: Mo., 22. Okt. 2018 um 21:45 Uhr Subject: [dita-users] [ANN] XML Prague 2019 - Call for Proposals To: dita-users(a)yahoogroups.com <dita-users(a)yahoogroups.com> Hello, we are glad to announce that call for proposals for XML Prague 2018 conference is open now. The XML Prague conference will include two full days of single track sessions as well as a multitrack unconference day. The conference is held on the Thursday, Friday and Saturday (February 7-9, 2019), located at the University of Economics, nam. W. Churchilla, Prague, Czech Republic. XML Prague is a conference on XML for developers, markup geeks, information managers, and students. XML Prague focuses on markup and semantic on the Web, publishing and digital books, XML technologies for Big Data and recent advances in XML technologies. The conference provides an overview of successful technologies, with a focus on real world application versus theoretical exposition. This years topics include the following: * Markup and the Extensible Web * Semantic visions and the reality * Publishing for the 21th century * XML technologies and Big Data * State of the XML Union * XML success stories Conference website: http://www.xmlprague.cz Call for proposals: http://www.xmlprague.cz/cfp/ Registration will be opened soon. Please take note of the following important ates: December 2nd – End of CFP January 9th – Notification of acceptance/rejection January 31st – Final paper (for those who will provide it) February 7-9 – XML Prague 2019 conference This year we would like to encourage new speakers -- full paper submission is no longer needed and there will be shorter slots available for those who would like to introduce/demo something "smaller". If you have any questions, interested in sponsorship or just want to make a suggestion please send email to: info(a)xmlprague.cz Jirka Kosek on behalf of XML Prague -- ------------------------------------------------------------------ Jirka Kosek e-mail: jirka(a)kosek.cz http://xmlguru.cz ------------------------------------------------------------------ Professional XML and Web consulting and training services DocBook/DITA customization, custom XSLT/XSL-FO document processing ------------------------------------------------------------------ Bringing you XML Prague conference http://xmlprague.cz ------------------------------------------------------------------

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Reflect.forName() / Performance
by Tom Rauchenwald (UNIFITS) 23 Oct '18

23 Oct '18

Hi BaseX-Team, when profiling some of our tests i found that we spend some time in Reflect.forName(). We have 2 xquery modules in the repo (we don't call java code directly). I'm not sure why BaseX tries to load our xqm as Java Modules, but what I noticed is that Reflect.forName caches the positive case (i.e., the class is found), but not the negative case (i.e., the class is not found). I've changed the code to cache the negative case as well (see below), and noticed an improvement of about 5 percent. Our tests create and query loads of small databases, so this is maybe quite an artificial speedup. I could provide a PR if this is a worthwhile improvement in your opinion (and if I'm not missing something obvious). We're still on BaseX 8.7.6 in case that matters, as far as I could see the Code didn't change in BaseX 9. Thanks, Tom Code: public static Class<?> forName(final String name) throws ClassNotFoundException { Class<?> c = CLASSES.get(name); if(c == null) { if (CLASSES.containsKey(name)) { throw new ClassNotFoundException(name); } else { try { c = Class.forName(name); } catch (ClassNotFoundException e) { CLASSES.put(name, null); throw e; } if (!Modifier.isPublic(c.getModifiers())) throw new ClassNotFoundException(name); CLASSES.put(name, c); } } return c; }

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Fairlock and query monitoring
by Maximilian Gärber 22 Oct '18

22 Oct '18

Hi, for some time now, I've switched a production system (running Basex 8.6) to FAIRLOCK = true. With PARALLEL = 16. While this helped speed up write operations, there are situations where queries go from sub-second to minute(s) if a few more users are reading/writing at the same time. The DBs in question are incrementally indexed. Since single queries are fast, I don't know what the best way of handling these situations would be. As a last resort I was thinking about adding a cache solution (write-behind) that allows for saving and delays (batches) writes. But before introducing another component to the system, I'd like to hear what other ideas might exist. Br, Max

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Optimized query for importing content based on metadata
by Jason Davis 22 Oct '18

22 Oct '18

Hi, I’ve cobbled together a query that I want to use to import xml from the filesystem into the database based on specific metadata requirements: let $xmlroot := "/Users/jason.davis/Sandbox/dita-docs/content/" for $file in file:list($xmlroot, true()) where matches($file, 'xml') or matches($file, 'ditamap') let $doc := file:resolve-path($file, $xmlroot) return if (doc($doc)//brand[contains(.,'xyz')]) then db:add("d4st^dita-docs^meta-test", $doc) else () It works, so I’m pleased! I’m just wondering if there is a more efficient way to achieve what I want to do. I know that using a specific XPath in the doc function is one thing I can do better. Any suggestions are appreciated! Thanks, Jason

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Websocket Vers. 9.1 on Tomcat
by Dieter Zanzinger 22 Oct '18

22 Oct '18

Hi, BaseX-Team, I tested the new websocket-feature. The .zip- installation on Win10 (your embedded jetty) worked (your chat-app). But I had problems with the .war -installation on tomcat. With the standard-installation, the paths in the chat.js had to be preceded with /BaseX - ok so far. I get the login-page and main-page visible - ok. But when the main-page is loading, the network call to http://localhost:8080/BaseX/ws/chat <http://localhost:8080/BaseX/ws/chat> fails with http-code 404. I think, there is a problem with paths as well? It would be great, if you could add documentation for Tomcat as well. Thanks for this great tool! Dieter Zanzinger

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Bug/question: large collection
by Marko Niinimaki 22 Oct '18

22 Oct '18

Hi, it looks like "nodes" exceeds some integer range if I add 2 million documents (below). Another, unrelated question: our server has 24 cores. What would be the best way to utilize that kind of parallel power in queries? > info db Database Properties NAME: tmp SIZE: 47 GB NODES: -2147476286 DOCUMENTS: 705708 BINARIES: 0 TIMESTAMP: 2018-08-29T02:27:58.000Z UPTODATE: false Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 9.0.2 Java: Oracle Corporation, 1.8.0_66 OS: Linux, amd64 Stack Trace: java.lang.ArrayIndexOutOfBoundsException

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Missing two things but great tool!
by Jennifer Kracht 22 Oct '18

22 Oct '18

Hi, thank you for this handy and comprehensive tool! I have tested other „non-open source“ but they are not working so smart like this. When I started working with XML files I had problems to find the relevant information. But this tool helped me a lot to figure out the general structure. There are just two things that I‘m missing and wanted to ask if this is planned for future: 1. I really like the map visualisation possibility. I use lot of XML with coordinates and I was impressed that the tool could figure out them automatically. But it would be much more cooler to see it with a real map in background. 2. I tried to export the XML to CSV but this seems not working. The exported file is not usable. In past I just used Excel and it’s source task pane to bring it into a table format (filtering and sorting) so an export to Excel woud be cool! I understand that it’s an open source application but maybe you have possibilities to do something for it. Best Regards Jennifer

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Tomcat & services
by Marco Lettere 16 Oct '18

16 Oct '18

Dear all, has anyone experience with exploiting the persistent jobs (services) feature under Tomcat? We have installed services with the proper jobs.xml file. When running jobs:services() in the DBA after startup, we get the services listed. Nevertheless none of the XQuery scripts inside the jobs is executed at startup of the Tomcat. When running standalone with Jetty, the scripts are executed even if, in this case, we are getting empty results when running jobs:services() in the DBA after startup. Any clue on what we should double-check? Thanks, Marco.

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Change the default user and its Password
by DK Singh 11 Oct '18

11 Oct '18

Hi All, I have to change the default user credential of BaseX where should i made the changes, when i access the url "http://localhost:8984/dba" now it opens with the default credentials which is "admin" now i have to change it, i have made the changes in the web.xml <context-param> <param-name>org.basex.user</param-name> <param-value>dharmendra</param-value> </context-param> but it is not working still it is taking the default credentials. Regards Dharmendra Kumar Singh

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Output `out:format` function question
by Bridger Dyson-Smith 08 Oct '18

08 Oct '18

Hi all - I'm confused about some notation in the `out:format`[1] signature. In the wiki, I see out:format($format as xs:string, $item1 as item(), ...) as xs:string and in v9.0.2 (and the latest v9.1 beta) GUI, I see the following info: out:format(format,item1[,...]) But I'm confused by the `[,...]`. What does this mean? I've tried the following: out:format("%06d", 256) -> 000256 (: stolen from the wiki :) out:format("%06d", 256, 367) -> 000256 (: the second item() is ignored :) let $n := <t><i>256</i></t> out:format("%06d", $n) -> IllegalFormatConversionException: java.util.IllegalFormatConversionException: d != java.lang.String. I'm weak on my data model types for sure, but how should the signature here be interpreted? Thanks for your help! Best, Bridger [1] http://docs.basex.org/wiki/Output_Module#out:format

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