BaseX-Talk

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9 participants
5256 discussions

XQuery Update delete attributes
by Günter Dunz-Wolff 27 Sep '20

27 Sep '20

Hi all, can’t figure it out. Is there any way in XQuery Update, to delete a specific attribute from any node? Thanks for help. Best regards Günter

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Paging results of an XQuery-Search
by Günter Dunz-Wolff 26 Sep '20

26 Sep '20

Hi all, is it possible to present the results of an XQuery search in parts of 50? In order to speed up the search, only the first 50 results should be displayed and only if the user is interested in further results, 50 new results each should be displayed. Is this even possible? I did not find anything about it in the documentation. Example: let $collection := collection("data") let $hits := $collection//*:s[.//text() contains text {$query_string}] let $count_hits := count($hits) return <div> { if $count_hits <= 50 then <ol> {for $hit in $hits return <li>{$hit}</li> </ol> else ??? } </div> Thanks for any advice. Best regards Guenter

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Fwd: error in the latest developpers snapshot (BaseX944-20200919.114509)
by r.stapper＠lijbrandt.nl 26 Sep '20

26 Sep '20

Hi Christian, considder the snapshot down below and as bijlage. This genereate different results with the latest snapshot. No problem with 943 and the previous snapshot( BaseX944-20200911.135109) ============================================ declare %private function local:value1 ( $atomicItem as element( ) ) as item()* { $atomicItem/data() } ; declare %private function local:value2 ( $atomicItem as element( ) ) as item()* { trace( $atomicItem/data(), "test: ") } ; let $e := <E>test</E> return ( $e/data() , $e => local:value1() , $e => local:value2() ) ===========================================

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issue: Add custom lib folder #1456
by Nicholas Saunders 25 Sep '20

25 Sep '20

For the Ubuntu install of BaseX, where's the "lib" directory for BaseX? Or, does the Ubuntu build just operate differently? see also: https://askubuntu.com/q/1276967/847449 thanks, Nick

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Accessing Flexmark (Java) from Query
by Andreas Mixich 21 Sep '20

21 Sep '20

Hi, how can I translate this Java[1] to XQuery according to [2]? package com.vladsch.flexmark.samples; import com.vladsch.flexmark.util.ast.Node; import com.vladsch.flexmark.html.HtmlRenderer; import com.vladsch.flexmark.parser.Parser; import com.vladsch.flexmark.util.data.MutableDataSet; public class BasicSample { public static void main(String[] args) { MutableDataSet options = new MutableDataSet(); // uncomment to set optional extensions //options.set(Parser.EXTENSIONS, Arrays.asList(TablesExtension.create(), StrikethroughExtension.create())); // uncomment to convert soft-breaks to hard breaks //options.set(HtmlRenderer.SOFT_BREAK, "<br />\n"); Parser parser = Parser.builder(options).build(); HtmlRenderer renderer = HtmlRenderer.builder(options).build(); // You can re-use parser and renderer instances Node document = parser.parse("This is *Sparta*"); String html = renderer.render(document); // "<p>This is <em>Sparta</em></p>\n" System.out.println(html); } } I only get so far as to: declare namespace Node = "com.vladsch.flexmark.util.ast.Node"; declare namespace HtmlRenderer =" com.vladsch.flexmark.html.HtmlRenderer"; declare namespace Parser = "com.vladsch.flexmark.parser.Parser"; declare namespace MutableDataSet = "com.vladsch.flexmark.util.data.MutableDataSet"; declare option db:checkstrings 'false'; let $mds := MutableDataSet:new() let $builder := Parser:builder($mds) return $builder which results in DataSet{dataSet={}} I found no documentation, on how to translate something as Parser.builder(options).build() to XQuery. How do I express the method build() of the instance Parser.builder(options) I just created? Also, when I try the other way, by importing, for the following code import module namespace Node = "java:com.vladsch.flexmark.util.ast.Node"; import module namespace HtmlRenderer = "java:com.vladsch.flexmark.html.HtmlRenderer"; import module namespace Parser = "java:com.vladsch.flexmark.parser.Parser"; import module namespace MutableDataSet = "java:com.vladsch.flexmark.util.data.MutableDataSet"; let $mds := MutableDataSet:new() I get: [XQST0059] Could not instantiate com.vladsch.flexmark.util.ast.Node: java.lang.InstantiationException. Could it be, that it is only possible to call static properties via [1]? Am I right, that I need to write wrapper code in Java and then prepare results in a way, that I can retreive them from my own Java class? Thank you. [1]: https://github.com/vsch/flexmark-java/blob/master/flexmark-java-samples/src… [2]: https://docs.basex.org/wiki/Java_Bindings [3]: https://github.com/vsch/flexmark-java -- Goody Bye, Minden jót, Mit freundlichen Grüßen, Andreas Mixich

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Re: [basex-talk] Full-Text-Search Options
by Günter Dunz-Wolff 19 Sep '20

19 Sep '20

Sorry, it was my fault. Problem solved. Sorry again. Kindly regards Guenter

1 0

Full-Text-Search Options
by Günter Dunz-Wolff 19 Sep '20

19 Sep '20

Dear all, I’m using ft:mark with Options. In older versions of basex it worked fine, but with 9.3 I don’t get any results with the „distance" option and the „not in“ option. Maybe my syntax is deprecated? Example distance: ft:mark($ele[.//text() contains text {$query_string} all using wildcards using diacritics sensitive distance at most $distance words]) Example "not in": ft:mark($ele[.//text() contains text {$query_tokens} using wildcards using diacritics sensitive not in {$dont_find} using wildcards using diacritics sensitive]) Any help is appreciated. Thanks Guenter

1 0

Fulltext Distancing
by Adam Law 16 Sep '20

16 Sep '20

(: Hello - I saw some discussions about full text indexing. Dumbo here cannot work out how distance matching works. Also is it somehow possible to traverse up and down a full-index word list from a hit position rather than having to spend time say reversing strings. Is this is not possible due to how the word indexing works? If so can I preprocess https://github.com/pierrec/lz4/blob/master/fuzz/corpus/Mark.Twain-Tom.Sawye… to break it into words. I was considering making something like DTSearch (but more flexible) before I realised how difficult this is. Many thanks Dumbo :) import module namespace functx = 'http://www.functx.com'; (:fulltext <x><content><![CDATA[ https://github.com/pierrec/lz4/blob/master/fuzz/corpus/Mark.Twain-Tom.Sawye… ]]></content></x>:) (:$f - return all nodes containing queer and enterprises:) let $f := <x>{ft:search('xvue_textIndex',("enterprises", "queer"), map { 'mode': 'all' })/parent::* }</x> let $options1 := map { 'mode': 'all'} let $options2 := map { 'mode': 'all', "distance": map { "max": "5","unit": "words" }} let $options3 := map { 'mode': 'all words', "distance": map { "max": "5","unit": "words" }} let $options4 := map { 'mode': 'all words', "distance": map { "max": 5, "unit": "words" }} let $options := $options1 (:Why wont others work:) (:$g - mark words queers and enterprises. Can't get options:2,3,4 to work:) let $g := <y>{ft:mark( $f//*[ft:contains(text(), ('queer','enterprises'), $options)], 'mark')}</y> (:Hopeful - with distancing will this result in <mark>queer enterprises</mark>. Otherwise I have to postprocess more:) (:Unsure about how to return words before and words after using fulltext. Have to limit to characters:) (:Ideally, I would like to be able to specify words after and before:) let $charbefore := 30 let $charafter := 30 (:This takes a while because I am string joining large preceding-sibling:nodes() (sometimes text() and sometimes marked/text()) to return words in context:)(:Three seconds:) (:Is there a fulltext way of doing this that is faster eg traverse a word list by match position:) let $h := for $w in $g//mark return <a><preceedingWords>{ functx:reverse-string (substring( functx:reverse-string(string-join($w/preceding-sibling::node())),0,$charbefore))}</preceedingWords><match>{$w/text()}</match><followingWords>{substring(string-join($w/following-sibling::node() ),0,$charafter)}</followingWords></a> return $h (: $h := <a> <preceedingWords>thought and talked, and what </preceedingWords> <match>queer</match> <followingWords> enterprises they sometimes e</followingWords> </a> <a> <preceedingWords>t and talked, and what queer </preceedingWords> <match>enterprises</match> <followingWords> they sometimes engaged in. </followingWords> </a> Sorry about the length of this. :)

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Re: [basex-talk] Best way to re-create existing root element with all attributes
by Yitzhak Khabinsky 15 Sep '20

15 Sep '20

Hi Martin, Thanks for the answer. That's exactly what I was looking for. Regards, Yitzhak Khabinsky

1 0

html:parse() fails on webpage
by Andreas Mixich 15 Sep '20

15 Sep '20

Hi, when doing: html:parse(fetch:binary("https://ant.apache.org/manual/Tasks/chmod.html"), map{"method":"xml"}) and also html:parse(fetch:binary("https://ant.apache.org/manual/Tasks/chmod.html"), map{"method":"html"}) or html:doc("https://ant.apache.org/manual/Tasks/chmod.html") I get [html:parse] Line 23: </head> found, </link> expected. I use the BaseX version from 14 minutes ago ;-) (BaseX944-20200914.223814). -- Goody Bye, Minden jót, Mit freundlichen Grüßen, Andreas Mixich

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