BaseX-Talk

basex-talk@mailman.uni-konstanz.de

13 participants
5244 discussions

One of the map element causes SEPM0017 error
by Arkadiusz Bok 06 Apr '20

06 Apr '20

Hi, I'm trying to run one of unchanged code example from book "XQuery: Search Across a Variety of XML Data 2nd Edition" from publisher O'Reilly Media. |(: XQuery by Priscilla Walmsley (c) 2016 Priscilla Walmsley:) | |(:Example 13-4 Serialization parameters in a map :) xquery version "3.1"; declare namespace prod = "http://datypic.com/prod"; let $map := map { "method": "xml", "version": "1.0", "indent": true(), "cdata-section-elements": (xs:QName("prod:desc"),xs:QName("prod:name")), "use-character-maps": map { "«":"<%", "»":">%" } } let $element := <prod:name>Fleece Pullover</prod:name> return serialize($element,$map) | I'm using BaseX 9.3.2 to do this. But when I'm trying to run code, I get error: |Stopped at C:/Users/Arek/AppData/Local/Temp/example1304.xqy, 16/17: [SEPM0017] item() expected, xs:QName+ found: (Q{http://datypic.com/prod}desc, Q{http://datypic.com/prod}name). | When i remove 9 line with /cdata-section-elements/ element, code runs. Whether is it problem with XQuery implementation or with code? ||||

2 2

Problem with attribute parsing?
by Peter Villadsen 05 Apr '20

05 Apr '20

Hello I was doing some experiments and I ended up with this: let $c := <Class Source='{ttt'></Class> return $c/@Source When this is compiled in the BaseX GUI app, an error message ensues: Error: Stopped at ... /file3, 1/30: [XPST0003] Expecting '}', found '''. Query: let $c := <Class Source='{ttt'></Class> return $c/@Source Query plan: <QueryPlan compiled="false" updating="false"/> Surely that is not correct? If I add a } there, everything is fine: let $c := <Class Source='{ttt}'></Class> return $c/@Source I don't think there is an XML requirement forcing escaping start brace ('{') inside an attribute value? I know that XQuery supports <X A='{...}' /> where the inside of the {} is evaluated to give the value for the A attribute, but the example above is not XQuery, just an XML literal. I am sure I would have noticed this if it were a general problem. Best Regards Peter Villadsen Principal Architect Microsoft Business Applications Group

2 1

EXPath package dependencies
by Clark, Ash 01 Apr '20

01 Apr '20

Hello, I’m trying to define the dependencies for a general-purpose EXPath package, one which I plan to use in both eXist-db and BaseX. So far I’ve got this in expath-repo.xml*: <dependency processor="basex"/> <dependency processor="http://exist-db.org" semver-min="4.0.0"/> Based on the spec, I gather that `//dependency/@processor` is supposed to be non-exclusive. However, when I try to install the package into BaseX, I get the error “Package version is not supported.” Is this a bug? Is there something else I should do? Warmly, Ash * https://github.com/NEU-DSG/wwp-public-code-share/blob/counting_robot/counti… Ashley M. Clark (she/her) XML Applications Developer Digital Scholarship Group Northeastern University Libraries as.clark(a)northeastern.edu (617) 373-5983

1 0

Re: [basex-talk] How to apply array:for-each on an array of arrays?
by Martin Honnen 31 Mar '20

31 Mar '20

On 31.03.2020 18:32, Ben Engbers wrote: > Hi, > > For (my personal) clarity, I have split up the original function in two > parts: > > declare function local:step_one($nodes as node()*) as array(*)* > { > let $text := for $node in $nodes > return $node/text() => > tokenize() => distinct-values() > let $idf := $text => > tidyTM:wordCount_arr() > return $idf > }; > > In local:step_one(), I first create a sequence with the distinct tokens > for each $node. All the sequences are joined in $text. > I then call wordCount_arr to count the occurences of each word in $text: > > declare function tidyTM:wordCount_arr( > $Words as xs:string*) > as array(*) { > for $w in $Words > let $f := $w > group by $f > order by count($w) descending > return ([$f, count($w)]) > } ; > > I would say that tidyTM:wordCount_arr returns a sequence of arrays but I > am not certain if I have specified the correct return-type? Reading the code I agree that the return type seems to be a sequence of arrays but therefore I wonder why you don't get a similar error as later on with declaring array(*) and not array(*)* > Calling local:step_one(tidyTM:remove_Stopwords($nodes, "Stp", $Stoppers)) > returns: > ["probleem", 703] > ["opgelost.", 248] > .... > > I had hoped that calling the following local:wordFreq, would add the > idf to each element but instead I get an error > > declare function local:wordFreq_idf($nodes as node()*) as array(*) > { > let $count := count($nodes) > let $idf := local:step_one($nodes) > let $result := for-each( $idf, > function($z) {array:append ($z, math:log($count div $z(2) ) ) } ) > return $result > }; > [XPTY0004] Cannot promote (array(xs:anyAtomicType))+ to array(*): $idf > := ([ "probleem", 703 ], [ "opgelost.", 248 ], ...). The message tries to tell you that the declared return type array(*) is a single array while the function returns a (non-empty) sequence of arrays so using declare function local:wordFreq_idf($nodes as node()*) as array(*)* would remove that error. To insert the third value into each array I think you want let $result := $idf ! array:append(., math:log($count div .(2) ))

2 1

How to apply array:for-each on an array of arrays?
by Ben Engbers 31 Mar '20

31 Mar '20

Hi, In textmining, the 'idf' or inverse document frequency is defined as idf(term)=ln(ndocuments / ndocuments containing term). I am working on a function that should return this idf. This function: declare function local:wordFreq_idf($nodes as node()*) as array(*) { let $count := count($nodes) let $text := for $node in $nodes return $node/text() => tokenize() => distinct-values() let $idf := $text => tidyTM:wordCount_arr() return $idf }; returns: ["probleem", 703] ["opgelost.", 248] ["dictu", 235] ["opgelost", 217] ["medewerker", 193] ... For "probleem", the idf should be calculated as ln($count/703). Since there are 1780 nodes this would result in 0.929011751. I tried to exten the 'let $idf' line with: => array:for-each(function($idf) {array:append($idf, math:log($count div $idf[2]) )}) which should result in ["probleem", 703, 0.929011751] but no mather what I do, every time I get this error: [XPTY0004] Cannot promote (array(xs:anyAtomicType))+ to array(*): ([ "probleem", 703 ], [ "opgelost.", 248 ], ...). Is it possible to apply array:for-each on an array of arrays? Ben

4 7

collection('/test-db-1/bib')//Q{}libro versus collection('/test-db-1/bib')//libro
by Martin Honnen 30 Mar '20

30 Mar '20

Using BaseX 9.3.2, why does a query collection('/test-db-1/bib')//Q{}libro return 6 items while collection('/test-db-1/bib')//libro gives 0 items? If I run collection('/test-db-1/bib')//Q{}libro, collection('/test-db-1/bib')//libro the info window shows Compiling: - rewrite fn:collection([uri]) to document-node() item: collection("/test-db-1/bib") -> db:open-pre("test-db-1", 12000002) - merge steps: descendant::element(libro) - rewrite fn:collection([uri]) to document-node() item: collection("/test-db-1/bib") -> db:open-pre("test-db-1", 12000002) - remove step without results: element(libro) - rewrite iter step to empty sequence: element(libro) -> () - rewrite cached path to empty sequence: db:open-pre("test-db-1", 12000002)/descendant-or-self::node()/() -> () - rewrite expression list to iter path: (db:open-pre("test-db-1", 12000002)/descendant::element(libro), ()) -> db:open-pre("test-db-1", 12000002)/descendant::element(libro) Optimized Query: db:open-pre("test-db-1", 12000002)/descendant::element(libro) Query: collection('/test-db-1/bib')//Q{}libro, collection('/test-db-1/bib')//libro Result: - Hit(s): 6 Items - Updated: 0 Items - Printed: 1455 b - Read Locking: test-db-1 - Write Locking: (none)

2 2

Re: [basex-talk] serialize with SerialMethod.XML
by jfrm.maurel＠gmail.com 30 Mar '20

30 Mar '20

Hi Christian, Le 30/03/2020 à 15:51, Christian Grün a écrit : > You should always close instances of classes that inherit the > Closeable interface. Thank you for the tip. I will change my code. Regards. -- Jean-François MAUREL PIMECA http://www.pimeca.com

1 0

serialize with SerialMethod.XML
by jfrm.maurel＠gmail.com 25 Mar '20

25 Mar '20

Hi, I am currently learning how to use BaseX with Java in embedded mode. When I use the following code with SerialMethod.BASEX every thing is fine however if I replace it with SerialMethod.XML I obtain an empty file without any error message. Could you please tell me what I am doing wrong in the second case (with SerialMethod.XML) ? ====================== public static void serialize(String query, String outputFileUri) { try { QueryProcessor processor = new QueryProcessor(query, context); File outputFile = FileProc.newFile(outputFileUri); SerializerOptions so = new SerializerOptions(); so.set(SerializerOptions.ENCODING, "UTF-8"); so.set(SerializerOptions.METHOD, SerialMethod.BASEX); // so.set(SerializerOptions.METHOD, SerialMethod.XML); so.set(SerializerOptions.OMIT_XML_DECLARATION, YesNo.NO); Serializer serializer = Serializer.get(new FileOutputStream(outputFile), so); Item item = processor.iter().next(); serializer.serialize(item); processor.close(); } catch (QueryException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } ====================== BaseX 9.3.3 from github Java 8 Windows 10 Regards -- Jean-François MAUREL PIMECA http://www.pimeca.com

1 0

Unwanted XML output when using RestXQ custom response
by Mickael Desfrenes 19 Mar '20

19 Mar '20

Hello, This is my first post here, I hope this is the right list for such questions. I am using RestXQ to send assets to the browser. Given that I want to control some headers ("expires" and such), I thought I could use RestXQ custom responses. Here's what I came up with: declare %rest:path("/plugins/{$filePath=.*}") function max.file:pluginUIFile($filePath as xs:string){ let $path := file:parent(file:parent(static-base-uri())) || "/plugins/" || $filePath return (<rest:response> <http:response status="200"> <http:header name="expires" value="Wed, 21 Oct 2222 07:28:00 GMT"/> </http:response> </rest:response>, max.util:rawFile($path)) }; The HTTP response does have the wanted header. However, the body has some unwanted XML at the top: <rest:response xmlns:rest="http://exquery.org/ns/restxq"> <http:response xmlns:http="http://expath.org/ns/http-client"/> <output:serialization-parameters xmlns:output="http://www.w3.org/2010/xslt-xquery-serialization"> <output:media-type value="text/ecmascript"/> </output:serialization-parameters> </rest:response> class DocumentBasket { constructor(basket_id = "basket") { this.storage = localStorage; this.basket_id = basket_id; } _fetch_basket_data() { let basket_data = this.storage.getItem(this.basket_id); if (basket_data === null) { basket_data = []; } else { basket_data = JSON.parse(basket_data); } return basket_data; } [more js below] Since I'm fairly new to the basex framework, I'm not sure if I'm doing something wrong or if it's some kind of bug. Thank you for your help, M. Desfrênes

2 1

Copy data from one database to another(basex)
by DK Singh 18 Mar '20

18 Mar '20

Hi I have to copy content from one database to another database, database containing xml files and word files. When i try to copy using function db:copy('test','test1') where 'test' is source database and 'test1' is destination database then it copies only xml files word files are not copied, can anyone suggest how can i achieve this. Regards Dharmendra Kumar Singh

2 1

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

BaseX-Talk