BaseX-Talk

basex-talk@mailman.uni-konstanz.de

1 participants
5252 discussions

fn:trace improvement
by Marc van Grootel 26 Aug '14

26 Aug '14

Hi, Would it be possible to add automatic serialization of map and array types in fn:trace? When using it should be transparent but currently providing a map or array fails. To trace it I now use awkward code to do it since I have to call map:serialize and array:serialize myself. E.g. (fn:trace(map:serialize($map, 'X: ')), func($map))[2] Cheers, --Marc

2 2

Apply variable argument list to anonymous function
by Marc van Grootel 26 Aug '14

26 Aug '14

Hi, I am trying to call an anonymous function with a variable argument list. Maybe I'm overlooking something within XQuery but I cannot figure out how to do this. This is the code I would like to get working. declare function local:apply($fn, $args) { $fn($args) }; declare variable $concat := fn:concat#3; declare variable $args := ('a', 'b', 'c'); (: needs to handle any list of strings :) local:apply($concat, $args) (: => 'abc' :) What I want local:apply to do is similar to apply in some function languages such as Clojure ( http://clojuredocs.org/clojure_core/clojure.core/apply) In the code above I have two problems. a) how to bind the fn:concat function to a variable. Arity? #1, #2 ... ? b) how to "apply" a variable argument list to the function passed in to local:apply. I figure I could do something maybe with some other higher order functions but I cannot see the solution. I don't mind rtfm responses, I may have missed it. I keep bombarding the list with questions so it is only fair to give a bit of context. I am porting parts of a few small Clojure libraries to XQuery, most important libraries are Ring and Compojure which are libraries for use in web frameworks. My implementation currently builds on top of RESTXQ but eventually can provide an alternative way of handling HTTP routing requests through function handlers (without function annotations). This is similar to WSGI in Python and Rack in Ruby. I would've liked to release this sooner but it is more work than anticipated and I want to provide something that does these ideas justice. So it's ready when it's ready ;-) but I'm pretty close. I'm currently finalizing the routing part and need to work some more on middleware handlers. Until then go look at https://github.com/ring-clojure to see what this is about. --Marc

5 15

optimize BaseX performance
by Kunal Chauhan 25 Aug '14

25 Aug '14

Hello, I have a 1GB sized xml file. which contains 94,50,001 records. while I fired query to retrieve all the records it will take approx 30 secs to execute a query. *I fired below mentioned query using Java API (QueryProcessor). * "transaction/* except (/transaction/traInfo)" QueryProcessor proc = new QueryProcessor(query, context); Result result = proc.execute(); System.out.println(result.size()); Iter itr = proc.iter(); it took *40 Secs* on execution of the above code. is there a scope of improvement without changing the query ? *My XML file is look like this.* <transaction> <traInfo id="ti1"> <date>01-01-2014</date> <source>bank1</source> </traInfo> <traInfo id="ti2"> <date>01-01-2014</date> <source>bank2</source> </traInfo> <traInfo id="ti3"> <date>01-01-2014</date> <source>bank3</source> </traInfo> <income transInfoRef="ti1">1000</income> <assets transInfoRef="ti1">1000</assets> <liablity transInfoRef="ti1">1000</liablity> <grossprofit transInfoRef="ti1">1000</grossprofit> <income transInfoRef="ti2">1000</income> <assets transInfoRef="ti2">1000</assets> <liablity transInfoRef="ti2">1000</liablity> <grossprofit transInfoRef="ti2">1000</grossprofit> <income transInfoRef="ti3">1000</income> <assets transInfoRef="ti3">1000</assets> <liablity transInfoRef="ti3">1000</liablity> <grossprofit transInfoRef="ti3">1000</grossprofit> ... </transaction> -- *Kunal Chauhan* mail4ck(a)gmail.com [+918655517141]

2 11

Query Cache?
by Christopher Yocum 24 Aug '14

24 Aug '14

Dear List, I have a query (included below) which uses full text searching and it is fairly slow using BaseX 7.9 (5-8 seconds). I was wondering if there was a query cache implemented in BaseX? I ask because the GUI seems to keep a cache around because the same query goes from 5000ms to 204ms if I run it twice in the GUI. The query looks like this: declare variable $term as xs:string external; declare variable $col as xs:string external; <results>{subsequence(ft:mark(for $x in collection($col)//entry where $x//text()[. contains text {$term} using wildcards] order by fn:lower-case(fn:replace(($x//orth[1]/text())[1], '\\p{P}|\\d+','')) collation \"?lang=ga\" return $x), 1, 5000)}</results> Thanks for any help you can provide. Chris Yocum

3 14

Downloading files
by Lars Johnsen 21 Aug '14

21 Aug '14

I am using BaseX restxq for accessing a repository from a web browser. Uploading files works smoothly, but I can't see how to make a download button work. For uploading, the recipie on the restxq help page was enough to get it to work. Is there a corresponding way for making downloading work? What I have tried is to let BaseX send a html-page containing: <form method="get" action="/download/{$file}"> <button type="submit">Download</button> </form> To process this form is the following restfunction declare %rest:path("/download/{$file}") %output:method("html") function page:download-file($file) { ... } Inside the curly braces, I have tried an <a href..> element and file:read-binary, but none of them with any success. BaseX complains about the <a> element, and file:read-binary outputs directly to the browser. Any suggestions?

2 3

pagination implementation.
by Kunal Chauhan 21 Aug '14

21 Aug '14

Hi, I want to implement pagination through Basex. results should be retrieved as per given range / size. and I don't want to modify XQuery. is there any way to achieve this requirement ? - Kunal Chauhan

3 2

Why does BaseX create empty System-properties
by rune.engh＠fatax.no 21 Aug '14

21 Aug '14

Thanks Christian, it works! So does the previous snapshot. I probably experienced some classloading/caching issues of the BaseX79.jar in my IDE. In any case - my bad. I do not know where setProperty('user.timezone','Europe/Oslo') comes from. Thanks again for your great help! Best Rune

1 0

Re: [basex-talk] random:integer vs. random:seeded-integer
by Amanda Galtman 19 Aug '14

19 Aug '14

Thanks, Christian! Cheers, Amanda > Date: Tue, 19 Aug 2014 16:04:17 +0200 > From: Christian Gr?n <christian.gruen(a)gmail.com> > To: Dirk Kirsten <dk(a)basex.org> > Cc: BaseX <basex-talk(a)mailman.uni-konstanz.de> > Subject: Re: [basex-talk] random:integer vs. random:seeded-integer > Message-ID: > <CAP94bnObngxdY3GmJABJYsxF8Bt4WJBcyFeQf- > 3QwGfrPJzAOg(a)mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > Hi Amanda, > > I have extended Dirk's pull request and added new error codes [1]; a new > snapshot is available [2]. > > Best, > Christian > > [1] http://docs.basex.org/wiki/Random_Module > [2] http://files.basex.org/releases/latest/ > > On Mon, Aug 18, 2014 at 5:10 PM, Dirk Kirsten <dk(a)basex.org> wrote: > > Hello Amanda, > > > > I agree, this behaviour is inconsistent. I am not quite sure what is > > the best way to go here. Raising no error and simply returning 0 (as > > it is currently done for random:integer() if max is out of range) > > seems pretty dangerous to me, considering that randomness is often > > used for security and an unexpected 0 might be hazardous. > > Raising a Java error is maybe not the most elegant thing, maybe an > > XQuery error would be more elegant (like FOAR0001, see > > https://docs.basex.org/wiki/XQuery_Errors). > > > > I created a small pull request, which also throws an error for > > random:integer() if max is out of range, see > > https://github.com/BaseXdb/basex/pull/985. > > > > Cheers, > > Dirk > > > > On 18/08/14 15:56, Amanda Galtman wrote: > >> Hi, > >> > >> Is it intentional that random:integer lets you use zero or a negative value > for $max, but random:seeded-integer errors out in those cases? I know > these are edge cases. I'm only flagging them because of the inconsistency > between the two similar functions. > >> > >> (: Returns (0,0). :) > >> (random:integer(0),random:integer(-5)) > >> > >> (: Errors out :) > >> random:seeded-integer(31,1,0) > >> > >> (: Errors out :) > >> random:seeded-integer(31,1,-5) > >> > >> > >> Here is the error information from the last command above. > >> > >> Error: > >> Improper use? Potential bug? Your feedback is welcome: > >> Contact: basex-talk(a)mailman.uni-konstanz.de > >> Version: BaseX 7.9 > >> Java: Oracle Corporation, 1.7.0_25 > >> OS: Windows 7, amd64 > >> Stack Trace: > >> java.lang.IllegalArgumentException: n must be positive > >> at java.util.Random.nextInt(Unknown Source) > >> at org.basex.query.func.FNRandom$1.next(FNRandom.java:85) > >> at org.basex.query.MainModule$1.next(MainModule.java:98) > >> at org.basex.query.QueryContext.execute(QueryContext.java:598) > >> at org.basex.query.QueryProcessor.execute(QueryProcessor.java:101) > >> at org.basex.core.cmd.AQuery.query(AQuery.java:82) > >> at org.basex.core.cmd.XQuery.run(XQuery.java:22) > >> at org.basex.core.Command.run(Command.java:329) > >> at org.basex.core.Command.execute(Command.java:94) > >> at org.basex.gui.GUI.exec(GUI.java:417) > >> at org.basex.gui.GUI.access$500(GUI.java:41) > >> at org.basex.gui.GUI$8.run(GUI.java:361) > >> > >> > >> Cheers, > >> Amanda > >> > > > > -- > > Dirk Kirsten, BaseX GmbH, http://basex.org > > |-- Firmensitz: Blarerstrasse 56, 78462 Konstanz > > |-- Registergericht Freiburg, HRB: 708285, Gesch?ftsf?hrer: > > | Dr. Christian Gr?n, Dr. Alexander Holupirek, Michael Seiferle > > `-- Phone: 0049 7531 28 28 676, Fax: 0049 7531 20 05 22

1 0

BaseX for dummies
by Paul Swennenhuis 19 Aug '14

19 Aug '14

Hello list, I am pleased to announce a new introduction in BaseX, targeted at beginning BaseX users in general, and to PHP/Javascript developers in particular. The introduction is added as PDF to the BaseX introduction page at http://docs.basex.org/wiki/Getting_Started. The title is 'BaseX for dummies'. There is also a link to a ZIP package that contains the files mentioned in the PDF. Feedback is welcome! Prosit, Paul

1 0

MIXUPDATES?
by Marco Lettere 19 Aug '14

19 Aug '14

Hi all, I wanted to start using the MIXUPDATES feature steadily but whatever latest version I download it's always telling basex80/basex/.basex: Unknown option 'MIXUPDATES'. I am pretty sure I already tried it few months ago so now I'm pretty clueless. Could anyone please point me to the right package to download? Thank you, Marco. P.S. I tried with http://files.basex.org/releases/latest/BaseX80-20140814.235204.zip and http://files.basex.org/releases/BaseX-latest.zip

2 2

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

BaseX-Talk