BaseX-Talk October 2016

basex-talk@mailman.uni-konstanz.de

21 participants
28 discussions

standalone vs GUI character parsing
by Bridger Dyson-Smith 13 Jun '17

13 Jun '17

Hi all - I'm able to create a database with the GUI from an XML document that contains an invalid character (U+0000) -- I guess BaseX does some character scrubbing, which is awesome :). When I try creating a database with the same input XML document from the commandline (using the basex executable), I get an error message. Here are my commands in standalone mode: BaseX 8.5.3 [Standalone] Try 'help' to get more information. > create db test-bad-char /usr/home/bridger/src/another-test.xml "/usr/home/bridger/src/another-test.xml" (Line 4): An invalid XML character (Unicode: 0xb) was found in the element content of the document. > xquery db:create("test-bad-char", "/usr/home/bridger/src/another-test.xml", "/usr/home/bridger/src/", map { "chop": false() }) Stopped at ., 1/10: [FODC0002] "/usr/home/bridger/src/another-test.xml" (Line 4): An invalid XML character (Unicode: 0xb) was found in the element content of the document. > This isn't a surprise (I'm more surprised (pleasantly) by the GUI behavior); is there a way to apply the same "scrubbing" from the GUI in standalone mode? I'm sure there is, but I'm not able to figure out which option to apply. As always, thank you for your time and trouble, and thanks for BaseX. Best, Bridger

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Web sockets and BaseX
by France Baril 02 Nov '16

02 Nov '16

Has anyone implemented a solutions that uses web sockets with BaseX? I've been doing some work with socket.io and node.js, but all the research I've done on Jetty points to the need to create .java files that manage the connection on the server side. Does that mean I'd need a BaseX module to manage that? Since Jetty seems to support web sockets, do you forsee any other issues specific to BaseX? -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com

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broken pipe in parallel queries
by George Sofianos 01 Nov '16

01 Nov '16

I'm having some issues with running some queries in parallel. If I run the script on one file, I get the expected result (the execution time is about 40 seconds for this specific script). If I run the same script on many XML files, at the same time, I get a broken pipe error. I'm using a java BasexClient to execute the queries, and I'm trying to execute the script on about 50 files at the same time (the .basex parallel configuration is the default). Could this be related to basex? It could also be a network issue so I'm still investigating. 10/28/2016 4:10:21 PM Suppressed: java.net.SocketException: Broken pipe 10/28/2016 4:10:21 PM at java.net.SocketOutputStream.socketWrite0(Native Method) 10/28/2016 4:10:21 PM at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113) 10/28/2016 4:10:21 PM at java.net.SocketOutputStream.write(SocketOutputStream.java:159) 10/28/2016 4:10:21 PM at org.basex.io.out.BufferOutput.flush(BufferOutput.java:60) 10/28/2016 4:10:21 PM at org.basex.io.out.BufferOutput.write(BufferOutput.java:54) 10/28/2016 4:10:21 PM at org.basex.io.out.PrintOutput.write(PrintOutput.java:66) 10/28/2016 4:10:21 PM at org.basex.io.out.ServerOutput.write(ServerOutput.java:31) 10/28/2016 4:10:21 PM at java.io.OutputStream.write(OutputStream.java:116) 10/28/2016 4:10:21 PM at org.basex.io.out.BufferOutput.flush(BufferOutput.java:60) 10/28/2016 4:10:21 PM at org.basex.io.out.PrintOutput.flush(PrintOutput.java:141) 10/28/2016 4:10:21 PM at org.basex.io.serial.OutputSerializer.close(OutputSerializer.java:82) 10/28/2016 4:10:21 PM at org.basex.server.ServerQuery.execute(ServerQuery.java:143) 10/28/2016 4:10:21 PM ... 2 more

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map:merge new semantics for 8.6
by Marc van Grootel 31 Oct '16

31 Oct '16

Hi, Any reason why the deault semantics for map:merge in 8.6 changed in a backwards incompatible manner? Is this because of some XQuery/XPath spec thing? A while ago I switched to 8.6-SNAPSHOT just to be on the latest and greatest and I starting seeing weird things in my code. Initially I didn't bother to look at the docs as I didn't expect map:merge to have changed. At some point I even thought map:merge was broken in this snapshot. I often use map:merge for handling function options and I add the defaults first and then user options. With 8.6 this default behaviour has changed and I would have to switch this around or explicitly ask for 'use-last'. I can do but only by adding map { 'duplicates': 'use-last' }. This means I will have code <= 8.5 and I need to have different code for > 8.5. Was this intentional? If not then I would vote for re-instating default behaviour (use-last). Cheers, --Marc

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Version 8.5 for Ubuntu 16.04
by Alex R. Loayza 30 Oct '16

30 Oct '16

Hello, I'd like to install BaseX 8.5 on Ubuntu 16.04 (Xenial). However, in https://launchpad.net/ubuntu/+source/basex I see that the only binary available for 16.04 is basex_8.2.3-1_all.deb, which is older. I see on the same address that for Ubuntu 16.10 (Yakkety) BaseX 8.5 is available from deb file basex_8.5.1-1_all.deb. Is it possible to download this deb and install it on Xenial? Any potential issues? By the way, 16.04 is a LTR. Shouldn't we expect updated packages to become available for it as well? Best regards. Alex

2 1

A BaseX/DITA use case...
by France Baril 29 Oct '16

29 Oct '16

For those who are interested in the use of XML content for publishing, this presentation is about using BaseX to power a slideshow editing tool that builds slides from existing DITA documentation/training content... https://www.brighttalk.com/community/content-marketing/ webcast/9273/209719?utm_campaign=community-live-recorded&utm_content=&utm_ source=brighttalk-portal&utm_medium=web&utm_term= - France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com

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Download hinter Firewall funktioniert nicht
by Schindler Wolfgang Dr. 27 Oct '16

27 Oct '16

Hallo, der Download der aktuellen Version des BaseX Windows Installers auf einen Rechner, der über Proxy (hinter einer betrieblichen Firewall) aufs Web zugreift, funktioniert nicht. Warum weiß ich nicht genau, könnte aber vermuten, dass an der Art der URI http://files.basex.org/releases/8.5.3/BaseX853.exe liegt. Gibt es eine andere Methode an den Download zu kommen. Danke fürs Helfen und noch einen schönen Tag! Beste Grüße, Wolfgang Schindler

2 1

Check if server is running, silently
by Bram Vanroy 27 Oct '16

27 Oct '16

Hi all To make clear to users which corpora are currently available and which aren't, I'm checking to see if a BaseX server instance exists and then check if a specific database exists. Testing for the database is done with db:query (as I learned through this mailinglist), but I'm not sure how I can silently test for the server in PHP. All BaseX examples use try-catch blocks, which makes sense to catch errors that go wrong, and do something with them. If I'm not mistaken these errors are automatically logged by Apache (maybe also by other webservices). This means that if I'm only checking the existence of a server with the code below (variables left out), I will always write an error to a log file. Obviously, that is not what I want because I know that the error 'Cannot communicate with server' is to be expected when the server does not exist! try { $session = new Session($dbhost, $dbport, $dbuser, $dbpwd); // db:exists returns a string 'false', still need to convert to bool $corpusExists = toBoolean($session->query("db:exists('$databaseName')")->execute()); $session->close(); if ($corpusExists) { $availabilityArray[] = $databaseName; } } catch (Exception $e) { // } This script works perfectly fine, but I do not want the errors to be logged (for this case) to prevent my error log to be full of the same error. Is there another way to test for a BaseX instance only? For instance, a way to return false when the server does not exist, I could do something like: $session = new Session($dbhost, $dbport, $dbuser, $dbpwd); If ($session) { // db:exists returns a string 'false', still need to convert to bool $corpusExists = toBoolean($session->query("db:exists('$databaseName')")->execute()); $session->close(); if ($corpusExists) { $availabilityArray[] = $databaseName; } } Thank you in advance Bram Vanroy

2 2

Some GUI suggestions
by Andy Bunce 27 Oct '16

27 Oct '16

Hi, Here are some suggestions for future GUI enhancements: Project window: * Add recent locations button, similar to the editor (recent files) Editor window: * use scrollable run of tabs rather than multi row see [1]. Ideally with dropdownlist to select any item as with Eclipse, Firefox etc. * more tab close options. E.g "close all", "close others" Query info window Very useful but typically, at any one time, I am only interested in a particular section from: Compiling,Optimized Query,Query,Result,Timing,Query plan. Maybe checkbox config for which are shown or links to sections or tabs for sections Map/tree/folder windows All these views are rooted at a document. There are times when I would like a collection based root here, as shown on database>properties>resources Cheers /Andy [1] http://docs.oracle.com/javase/7/docs/technotes/guides/swing/1.4/tabbedPane.…

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Re: [basex-talk] Text resources
by Kendall Shaw 27 Oct '16

27 Oct '16

Err… I mean: convert:binary-to-string(db:retrieve(‘some’,’some.txt’)) Can I skip the base64 part? Kendall From: <basex-talk-bounces(a)mailman.uni-konstanz.de> on behalf of Kendall Shaw <kendall.shaw(a)workday.com> Date: Wednesday, October 26, 2016 at 5:05 PM To: "basex-talk(a)mailman.uni-konstanz.de" <basex-talk(a)mailman.uni-konstanz.de> Subject: [basex-talk] Text resources Is this how I should retrieve text that is stored using db:store, within xquery? stream:materialize(db:retrieve(‘some’,’some.txt’)) ? Kendall

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BaseX-Talk October 2016