BaseX-Talk June 2019

basex-talk@mailman.uni-konstanz.de

12 participants
18 discussions

Options for ft:search
by Sebastian Zimmer 15 Mar '21

15 Mar '21

Hi, I'd like to request a feature concerning the ft:search method: An `lserror` option that works exactly like the global option `LSERROR`. It would be nice if we could set the maximum Levenshtein distance specifically for each fuzzy search without having to adjust the global option. Another question on ft:search: Is there a reason why it doesn't have a `case` option just like ft:contains has one? Best regards, Sebastian

2 3

Feature Request: Save untitled, open scripts when exiting GUI
by Andreas Mixich 30 Jul '20

30 Jul '20

SublimeText has this nifty feature, that it saves all open tabs, even if the have no representation on the filesystem, so one can continue exactly, where one has left off. I find myself often to have several, unnamed, XQueries open, to test this concept, to compose that function, etc. It would be nice, if one could simply shut off and have them reopened next time without naming a file and saving each item in question. -- Minden jót, all the best, Alles Gute, Andreas Mixich

2 6

9.2.1 not found in maven central
by andreas.hengsbach＠nexoma.de 07 May '20

07 May '20

Hi, is there a reason, that I can't find the current Version (9.2.1) in maven central? Thanks and best regards, Andreas

3 3

BaseX 9.2.1: Maintenance Release
by Christian Grün 26 Jul '19

26 Jul '19

Dear all, A new BaseX maintenance release is available: - GUI: Parsing of project files has become faster and smarter. - RESTXQ: Custom reponses are now sent as streams. - Performance tweaks (static typing: typeswitch, instance of). - Minor bugs have been fixed. Looking forward to your feedback, Christian BaseX Team

1 3

JS223 wrapper
by Marco Lettere 05 Jul '19

05 Jul '19

Hi all, is anyone on the list aware of a JS223 compliant wrapper for BaseX in order to include XQuery scripting "seamlessly" into scriptable applications? Thanks. Marco.

1 1

Memory mode in BaseX Gui
by France Baril 01 Jul '19

01 Jul '19

Hi, When we create a new DB and try to run a .xq script that adds new files to the DB we get an issue that says that we can't perform the operation in memory mode. We have to restart the server to be able to run our script. Can you tell why this is happening and if there is an easier way to get out of said memory mode without a server restart? Thanks -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com

2 3

GUI not counting all updates?
by France Baril 26 Jun '19

26 Jun '19

Hi, I am running this query on my DB in BasexGui. The updates are performed, but the info window shows hit=0 and update=0. ( for $i in db:open('en-us')//p/node()[1] return if ($i instance of text() and normalize-space($i) = '') then replace node $i with '' else (), for $i in db:open('en-us')//p/node()[last()] return if ($i instance of text() and normalize-space($i) = '') then replace node $i with '' else () ) The DB has items like this one: <td id="j1359186"> <q id="j1213306">Turn off projector</q> <q id="j1158327">Switch off projector</q> <q id="j11037">Projector off</q> <q id="j147181">Turn projector off</q> <q id="j1277">Deactivate projector</q> <q id="j122584">Disable projector</q> </td> -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com

2 2

Query Optimization Question
by Bridger Dyson-Smith 25 Jun '19

25 Jun '19

Hi all - An interesting XQuery question came up on reddit[1] over the weekend, and I'm curious about a couple of aspects of the problem. To recreate, the sample data is at timecenters[2] in the employeeTemporalDataset.zip download (specifically, the `departments.xml` and the three compressed directories of XML in `employees.tar.gz`). I created a database from employees.tar.gz (thanks for letting us parse XML in archives!), added the `departments.xml`, and then `Optimized All`. The initial query was ``` for $emp in /employees/employee[@tend = '9999-01-01'] let $curdept := $emp/deptno[@tend = '9999-01-01'] return $emp/lastname || " " || $curdept || " " || /departments/department[deptno = $curdept]/deptname ``` and it is slow (~100 minutes, 5999201.28 ms). The original poster came back later with a modified query that is significantly faster[3], but I was mostly wondering about the whys of the slowness. I think (but am not sure) that this is a join, and since the initial `for` binding ($emp) is pretty big (~240K), the processor has to parse through the $emp result sequence and match to values in the /departments part of the database; is that a correct assumption? Again, I'm assuming that in the second, faster, query, the processor has two sequences ($d and $e) and is able to pull the joined data together much more quickly? Thanks in advance for any light you can shed on these questions. Best, Bridger [1] https://www.reddit.com/r/xml/comments/c3mb86/simple_xquery_optimization/ [2] http://timecenter.cs.aau.dk/software.htm [3] improved query: ``` for $d in /departments/department for $e in /employees/employee[deptno[@tend='9999-01-01'] = $d/deptno] return $e/lastname || " " || $d/deptno || " " || $d/deptname ```

2 1

Re: [basex-talk] BaseX: Use and Error Questions
by Christian Grün 20 Jun '19

20 Jun '19

Hi Jordan, So that must have been the reason. If you use the GUI, you’ll need to avoid parallel requests on opened databases because there will be no synchronization between these instances (see [1] for more details). You can run your script inside the GUI; maybe that solves your problems. Cheers Christian [1] http://docs.basex.org/wiki/Startup#Concurrent_Operations Jordan Castillo <jordantcastillo1992(a)gmail.com> schrieb am Do., 20. Juni 2019, 18:36: > Hello Christian, > > First, thank you for the speedy reply. > > 1. This was the source of the problem. After closing the GUI I could run > the script that failed previously. > 2. The GUI can remain open if I instead use the CREATE DB or CHECK > commands rather than the OPEN command. > > Hope you have a great day. > > Jordan Castillo > > On Thu, Jun 20, 2019 at 6:28 AM Christian Grün <christian.gruen(a)gmail.com> > wrote: > >> Hi Jordan, >> >> The way you proceeded looks ok to me. Some questions: >> >> 1. Did you run any operations in parallel while the script was running >> (such as checking the progress of the script via the GUI or another >> CLI instance)? >> 2. Does the problem always occur after the same ADD operation in your >> script? >> 3. Does it work if you create a new database instead of opening an >> existing one?… >> >> CREATE DB exists >> ADD >> /Users/user/Desktop/O-Lab/Examples/cubesat/BINARIES/BINARY-03abaa7c-18fd-40a4-a26b-4be24089cfe4 >> ... >> >> Thanks in advance >> Christian >> >> >> >> >> On Thu, Jun 20, 2019 at 12:08 AM Jordan Castillo >> <jordantcastillo1992(a)gmail.com> wrote: >> > >> > Hello BaseX Staff, >> > >> > I am a developer who is new to BaseX and am getting stuck sending >> commands through the basex executable. >> > My goal is to either open the CLI executable and send a command >> (through a script), or send the command without the basex CLI opening, as >> long as the command is run. >> > In my recent attempt that I thought was close, I received the following >> error message: >> > >> > users-MacBook-Pro:Scripts user$ /Users/user/Downloads/basex/bin/basex >> -c/Users/user/Desktop/O-Lab/Examples/Scripts/commands.bsx >> > >> > Improper use? Potential bug? Your feedback is welcome: >> > >> > Contact: basex-talk(a)mailman.uni-konstanz.de >> > >> > Version: BaseX 9.2.2 >> > >> > Java: Oracle Corporation, 12.0.1 >> > >> > OS: Mac OS X, x86_64 >> > >> > Stack Trace: >> > >> > java.lang.RuntimeException: exists: lock file does not exist. >> > >> > at org.basex.util.Util.notExpected(Util.java:61) >> > >> > at org.basex.data.DiskData.finishUpdate(DiskData.java:246) >> > >> > at org.basex.core.cmd.ACreate.update(ACreate.java:97) >> > >> > at org.basex.core.cmd.Add.run(Add.java:56) >> > >> > at org.basex.core.Command.run(Command.java:257) >> > >> > at org.basex.core.Command.execute(Command.java:93) >> > >> > at org.basex.api.client.LocalSession.execute(LocalSession.java:132) >> > >> > at org.basex.api.client.Session.execute(Session.java:36) >> > >> > at org.basex.core.CLI.execute(CLI.java:92) >> > >> > at org.basex.core.CLI.execute(CLI.java:76) >> > >> > at org.basex.core.CLI.execute(CLI.java:63) >> > >> > at org.basex.BaseX.<init>(BaseX.java:80) >> > >> > at org.basex.BaseX.main(BaseX.java:42) >> > >> > >> > The command file I am trying to have basex accept looks like this: >> > >> > >> > >> > OPEN exists >> > >> > ADD >> /Users/user/Desktop/O-Lab/Examples/cubesat/BINARIES/BINARY-03abaa7c-18fd-40a4-a26b-4be24089cfe4 >> > >> > >> > With many more "ADD ..." commands to follow. >> > >> > >> > Any advice on how to perform this operation would be greatly >> appreciated. >> > >> > >> > Thanks, >> > >> > >> > Jordan Castillo >> >

1 0

BaseX: Use and Error Questions
by Jordan Castillo 20 Jun '19

20 Jun '19

Hello BaseX Staff, I am a developer who is new to BaseX and am getting stuck sending commands through the basex executable. My goal is to either open the CLI executable and send a command (through a script), or send the command without the basex CLI opening, as long as the command is run. In my recent attempt that I thought was close, I received the following error message: users-MacBook-Pro:Scripts user$ /Users/user/Downloads/basex/bin/basex -c/Users/user/Desktop/O-Lab/Examples/Scripts/commands.bsx Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 9.2.2 Java: Oracle Corporation, 12.0.1 OS: Mac OS X, x86_64 Stack Trace: java.lang.RuntimeException: exists: lock file does not exist. at org.basex.util.Util.notExpected(Util.java:61) at org.basex.data.DiskData.finishUpdate(DiskData.java:246) at org.basex.core.cmd.ACreate.update(ACreate.java:97) at org.basex.core.cmd.Add.run(Add.java:56) at org.basex.core.Command.run(Command.java:257) at org.basex.core.Command.execute(Command.java:93) at org.basex.api.client.LocalSession.execute(LocalSession.java:132) at org.basex.api.client.Session.execute(Session.java:36) at org.basex.core.CLI.execute(CLI.java:92) at org.basex.core.CLI.execute(CLI.java:76) at org.basex.core.CLI.execute(CLI.java:63) at org.basex.BaseX.<init>(BaseX.java:80) at org.basex.BaseX.main(BaseX.java:42) The command file I am trying to have basex accept looks like this: OPEN exists ADD /Users/user/Desktop/O-Lab/Examples/cubesat/BINARIES/BINARY-03abaa7c-18fd-40a4-a26b-4be24089cfe4 With many more "ADD ..." commands to follow. Any advice on how to perform this operation would be greatly appreciated. Thanks, Jordan Castillo

2 1

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

BaseX-Talk June 2019