BaseX-Talk January 2019

basex-talk@mailman.uni-konstanz.de

24 participants
36 discussions

console usage
by thufir 02 Jan '19

02 Jan '19

How can I run this script? thufir@dur:~/basex$ thufir@dur:~/basex$ basex [warning] /usr/bin/basex: Unable to locate /usr/share/java/jing.jar in /usr/share/java BaseX 9.0.1 [Standalone] Try 'help' to get more information. > > RUN fetch.note.text.xq Resource "/home/thufir/fetch.note.text.xq" not found. > > exit Have fun. thufir@dur:~/basex$ thufir@dur:~/basex$ cat fetch.note.text.xq fetch:xml("https://www.w3schools.com/xml/note.xml", map { 'chop': true() }) thufir@dur:~/basex$ The script seems to work fine from the GUI. thanks, Thufir

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JSON serialization/compatibility with exist-db JSON?
by Andreas Jung 02 Jan '19

02 Jan '19

Hi there, I have an issue with the migration of an XQuery script from eXist to Basex: The link https://gist.github.com/zopyx/467a01264d53bdaa48ad27cd553cfda8 shows the script and the expected (status quo) output for XML and JSON. Calling the script using /rest/foo/?run=foo.xql&method=json generates an HTTP response with Content-Type: application/json;charset=utf-8 but the output is a quoted XML string like: "<item><uri>\/foo\/de\/ayapedia\/addendums\/ernaehrung_9861fc6a-ba68-11e8-a8a1-001c4210b7a0\/current-20180920-111838.bak\/xml\/index.xml<\/uri><title>Ernährung<\/title><description\/><language>de<\/language><status>current<\/status><area>ayapedia<\/area><path\/><date>2018-09<\/date><url\/><atc_code\/><guideline_id>bef53078-2d8d-42d1-af8c-b3d387dfa52e<\/guideline_id><plone_uuid>464520ec154a42839b9f5d2635caccaf<\/plone_uuid><old_authors_additional\/><authors_additional>für den Arbeitskreis Ernährung, Stoffwechsel und Bewegung der DGHO<\/authors_additional><documenttype>ayapedia<\/documenttype><societies xmlns:json=\"http:\/\/basex.org\/modules\/json\" json:array=\"true\">dgho<\/societies><guideline_topics xmlns:json=\"http:\/\/basex.org\/modules\/json\" json:array=\"true\">183<\/guideline_topics><authors xmlns:json=\"http:\/\/ basex.org\/modules\/json\" json:array=\"true\">9211<\/authors><authors xmlns:json=\"http:\/\/basex.org\/modules\/json\" json:array=\"true\">5577<\/authors><authors xmlns:json=\"http:\/\/basex.org\/modules\/json\" json:array=\"true\">13728<\/authors><authors xmlns:json=\"http:\/\/basex.org\/modules\/json\" json:array=\"true\">373215<\/authors><\/item>" Calling /rest/foo/?run=foo.xql&method=json&json=format=jsonml" finally generates JSON but not in the related format. Isn't the JSON serialization supposed being standardized and compatible? Or how can I generate a JSON result that is compatible with the existing JSON response from eXist-dB? Andreas

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Scaling and Jsoniq
by Ben Pracht 02 Jan '19

02 Jan '19

Hi, I'm sorry if this was covered earlier, but I haven't seen it in a Google search. First, are there any support plans for scaling outwards? I know MarkLogic has splits clusters into multiple enodes and dnodes. But the idea is that there isn't one central bottleneck for requests. Second, I read about Jsoniq and was intrigued by it. It seemed like it supported JSON without requiring an XML intermediary. Having good JSON support would really help with frameworks like Angular or React. I really love Basex overall though and think it's underrated for what it can do. Regards, Ben

4 3

basic xquery
by thufir 02 Jan '19

02 Jan '19

How can I run this xquery: fetch:xml("http://books.toscrape.com/", map { 'parser': 'html', 'htmlparser': map { 'html': false(), 'nodefaults': true() } }) from basex using Java? I can run that xquery from the GUI. thanks, Thufir

2 1

update:output() update:cache()
by Dieter Zanzinger 02 Jan '19

02 Jan '19

I do not exactly understand, for which purpose update:output() is meant. Does anybody have an example, where one can see, how it works? (There is no example in the docs.) (I am searching for a way, to run a update-expression on a database and give the altered nodes as result back to the restq-user in one query. The update:output() or update:cache() - expression sounded like they do something similar… At present, i am helping me with a copy/modify/return-solution and am giving back the altered result, before I actually write back the result-node of the previous to the db. But I am searching for a more intuitive way to get this result). Sincerly Dieter

2 1

Serving Static Content from Tomcat
by Shaun Flynn 01 Jan '19

01 Jan '19

Hello there, I am using BaseX 9.1.1 inside a Tomcat server trying to build a webapp using RESTXQ. I have studied the DBA xqm files, and see that there is static content delivered to the generated login page, located in dba/static folder. When I try to replicate this in my app, I get 404 errors saying the resource can not be found in the Developer Tools of Opera. Below is my .xqm file. The resources in question are in bold and underlined. What am I doing wrong? module namespace scheduleGui = "www.tt.co.uk/schedule"; import module namespace path = "www.tt.co.uk/path" at "DFSPath.xqm"; (: Produces a simple HTML form for entering origin and destination to produce a path :) declare %output:method("html") %rest:path("/rail/a2b") function scheduleGui:welcome() { <html> <head> * <script type="text/javascript" src="static/jQuery3.1.1.js"></script>* * <script type="text/javascript" src="static/simplePost.js"></script>* </head> <body> <h1>Paths</h1> <table> <tr> <td> Origin </td> <td> <input type="text" id="origin" value="" size="8" /> </td> </tr> <tr> <td> Destination </td> <td> <input type="text" id="destination" value="" size="8" /> </td> </tr> <tr> <td> </td> <td> <input type="submit" value="Go!" id="findPath" /> </td> </tr> </table> <div id="displayArea"> </div> </body> </html> }; declare %rest:POST %rest:form-param("origin","{$origin}", "") %rest:form-param("destination","{$destination}", "") %output:method("html") %rest:path("/rail/a2bp") function scheduleGui:a2b($origin, $destination) { if($origin != "") then (<p> Find path from {$origin} to {$destination} </p>), <ul> { for $path in path:DFSSpec($origin, $destination, "up") return <li>{$path}</li> } </ul> };

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BaseX-Talk January 2019