BaseX-Talk

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1 participants
5252 discussions

RbaseX Client software, reading from a socket
by Ben Engbers 30 Jun '20

30 Jun '20

Hi, I have no idea if it is used by others, but last march my most recent version of my RbaseX library was accepted by CRAN. To my knowledge there are no errors (all tests are passed). The only problem is that performance is bad ;-(. Uploading a file or downloading the result from a query can take several minutes. I can understand why it takes so long. According to the server protocol, the end of a stream is indicated by a terminating 0-byte. And to distinguish a 'regular' 0-byte in a binary stream from the stop-0, 0-bytes (and FF-bytes) are preceded by an extra FF-byte. The only way to deal in R with these FF-byte was to proces each character/byte separately and that takes much time. I am trying to speed up everything by using C++ for all direct read/write operations. But I never have worked with C++ before. And neither do I understand exactly how streams are to be used. According to some posts on internet, when reading from a stream the first 8 bytes are used to pass information on the length of the stream. My question is if this a standard way to pass information on that length? Or is it specific to C++ or Java? Ben

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How to serialize HTML as text
by Emmanuel Chateau 27 Jun '20

27 Jun '20

Hi, I’ve got an XQuery question more than a BaseX question. I need to output a JSON object with HTML content without a parent element. Weird idea I grant you, but required by the people I work with. Working from a map, in the map value, the content should not appear in a parent element. Instead of : ``` map { ‘key' : ‘value’, ‘content’ : <span>this is some <hi>content</hi> etc</span> } ``` I would like to output something like ``` map { ‘key' : ‘value’, ‘content’ : 'this is some <hi>content</hi> etc' } ``` Is there a way to output some HTML content without the parent element in XQuery ? Thanks a lot for your help, Best regards, Emmanuel

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Re: [basex-talk] FW: inline issue
by Christian Grün 26 Jun '20

26 Jun '20

Hi Rob, Glad to you hear you are fine. If you want to ensure that arguments of user-defined functions are not evaluated before the function is evaluated, you should work with function items: let $check := function( $pred as item(), $true as function() as item()*, $false as function() as item()* ) { if ($pred) then $true() else $false() } return $check(true(), true#0, function() { error((), 'false') }) In the specific case you brought up, you can instead call the built-in function util:if: util:if(true(), 'true', error((), 'false')) The third argument will only be considered if the supplied condition fails. Hope this helps, Christian > It has been a while. I hope all is well over there. > Yep, still using BaseX and still loving it. It is a great product. > > However lately I encounter an issue with the %basex:inline annotation ☹ and it is bugging me. > > Consider both snippets [snip1], [snip2]. Both should give the same result. However they don’t and worse a can’t make the second snippet [ snip2] work conform the first snippet{snip1]. > > [snip1]: > ====== > if ( true() ) > then "true" > else error((),"false") > > [snip2]: > ====== > %basex:inline(0) > %basex:lazy > function( $pred > , $true > , $false > ) > { > if ( $pred) > then $true > else $false > } ( true() > , "true" > , error((),"false") > ) > > Can you please have a look at this? > TIA. > Greatings, > Rob Stapper > PS. As I remember this used to work fine. > I remember we had a discussion concerning inlining and laziness on 2015-06-17.

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FW: inline issue
by RobStapper 26 Jun '20

26 Jun '20

Sent from Mail for Windows 10 From: RobStapper Sent: Thursday, June 25, 2020 1:33 PM To: basex-talk(a)mailman.uni-konstanz.de Subject: inline issue Hi Cristian, It has been a while. I hope all is well over there. Yep, still using BaseX and still loving it. It is a great product. However 😉 lately I encounter an issue with the %basex:inline annotation ☹ and it is bugging me. Consider both snippets [snip1], [snip2]. Both should give the same result. However they don’t and worse a can’t make the second snippet [ snip2] work conform the first snippet{snip1]. [snip1]: ====== if ( true() ) then "true" else error((),"false") [snip2]: ====== %basex:inline(0) %basex:lazy function( $pred , $true , $false ) { if ( $pred) then $true else $false } ( true() , "true" , error((),"false") ) Can you please have a look at this? TIA. Greatings, Rob Stapper PS. As I remember this used to work fine. I remember we had a discussion concerning inlining and laziness on 2015-06-17. Sent from Mail for Windows 10 -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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Websites that use BaseX
by Jonathan Robie 25 Jun '20

25 Jun '20

I have recommended BaseX to some people who are writing an application. The developers, who are more comfortable with SQL, have asked for a list of websites that use BaseX. I imagine they would be happy with other happy customers too, they want to have basic confidence in the tool. So which users should give people confidence that BaseX is the tool for them? They know about my own happy experience with BaseX, they want to know more about other projects. Jonathan

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Websites that use BaseX
by Dieter Zanzinger 24 Jun '20

24 Jun '20

We use BaseX for a inhouse scan- and data-capture solution. Dieter Zanzinger Finanzgericht Muenchen > Am 24.06.2020 um 12:00 schrieb basex-talk-request(a)mailman.uni-konstanz.de: > > Send BaseX-Talk mailing list submissions to > basex-talk(a)mailman.uni-konstanz.de > > To subscribe or unsubscribe via the World Wide Web, visit > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk > or, via email, send a message with subject or body 'help' to > basex-talk-request(a)mailman.uni-konstanz.de > > You can reach the person managing the list at > basex-talk-owner(a)mailman.uni-konstanz.de > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of BaseX-Talk digest..." > Today's Topics: > > 1. Websites that use BaseX (Jonathan Robie) > 2. Re: Websites that use BaseX (Chris Yocum) > 3. Re: Websites that use BaseX (Joe Wicentowski) > 4. Re: Websites that use BaseX (Liam R. E. Quin) > 5. Re: Websites that use BaseX (Marco Lettere) > <mime-attachment> > <mime-attachment> > <mime-attachment> > <mime-attachment> > <mime-attachment>

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how to start and configure Jetty?
by Nicholas 22 Jun '20

22 Jun '20

I don't quite understand what it means for Jetty to be "embedded" in or with BaseX, but presumably there's a configuration? I see: |DEBUG =falseDBPATH =/home/nicholas/basex/data LOGPATH =.logs REPOPATH =/home/nicholas/basex/repo LANG =EnglishLANGKEYS =falseFAIRLOCK =falseCACHETIMEOUT =3600#Client/ServerArchitectureHOST =localhost PORT =1984SERVERPORT =1984USER =PASSWORD =SERVERHOST =PROXYHOST =PROXYPORT =0NONPROXYHOSTS =IGNORECERT =falseIGNOREHOSTNAME =falseTIMEOUT =30KEEPALIVE =600PARALLEL =8LOG =trueLOGMSGMAXLEN =1000#HTTP ServicesWEBPATH =/home/nicholas/basex/webapp RESTPATH =RESTXQPATH =PARSERESTXQ =3HTTPLOCAL =falseSTOPPORT =8985AUTHMETHOD =Basic but there's nothing actually at WEBPATH, no directory. Perhaps RESTXQPATH requires configuration? Really, just guessing. See also: https://askubuntu.com/q/1252599/847449 If I installed BaseX with apt, should it also pull in Jetty, then? thanks, Nick |

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trying to rename all node elements from <foo/> to <bar/>
by Nicholas 21 Jun '20

21 Jun '20

Hi, How do I rename all the "record" nodes in a database? I'm trying: for $x in db:open("bccdc_covid19") return return rename node $x//record as "baz" but this gives back Stopped at ., 1/13: [XPDY0002] bc.rename.xq: no context value bound. or [XPST0003] Unexpected end of query: 'rename node $x/...'. depending whether it's run from within the basex console. thanks, Nick

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sum() is returning inaccurate sums
by Jay Straw 17 Jun '20

17 Jun '20

Hi all, I'm building a budgeting system for home use, using XSLTForms and -- ready for it? -- BaseX! sum() has been behaving weird. I'm adding USD, which means only 2 decimals of precision. But depending on the combination of elements I add, I'll get a long double that's inaccurate. Sometimes it returns what I expect, sometimes it doesn't, but either case is repeatable. Take these 3 receipts: 1 -- <receipt uuid="694bf777-2d40-42ad-9809-97dfe6b04f40"> <metadata> <date>2020-06-08</date> <store> <name>Frigid North</name> <location/> </store> <purchaser>Jay</purchaser> <account>Debit</account> <category>shop-general</category> <net-total-computed>6.50</net-total-computed> <tip>0.00</tip> <gross>6.50</gross> </metadata> <item> <name>Start Capacitor (for old rockwell saw/jointer motor)</name> <cost>6.50</cost> <qty>1</qty> <total>6.50</total> <category>shop-general</category> </item> </receipt> 2 -- <receipt uuid="2eb74e82-3db5-4bd9-a591-8621c79f3fd6"> <metadata> <date>2020-06-09</date> <store> <name>Home Depot</name> <location>Tudor</location> </store> <purchaser>Jay</purchaser> <account>Cash</account> <category>jay-misc</category> <net-total-computed>9.87</net-total-computed> <tip>0</tip> <gross>9.87</gross> </metadata> <item> <name>Stainless Protractor</name> <cost>9.87</cost> <qty>1</qty> <total>9.87</total> <category>jay-misc</category> </item> </receipt> 3 -- <receipt uuid="1f1462e6-b37f-4daa-b293-29b9ec353627"> <metadata> <date>2018-09-16</date> <store> <name>Title Wave</name> <location>Midtown</location> </store> <purchaser>Franny</purchaser> <account>Debit</account> <category>books</category> <net-total-computed>20.85</net-total-computed> <tip/> <gross>20.85</gross> </metadata> <item> <name>Music of the Spheres</name> <category>books</category> <cost>6.95</cost> <qty>1</qty> <total>6.95</total> </item> <item> <name>Magic Mirror of M. C. Escher</name> <cost>8.95</cost> <qty>1</qty> <total>8.95</total> <category>books</category> </item> <item> <name>Daumier 120 Great Lithographs</name> <cost>4.95</cost> <qty>1</qty> <total>4.95</total> <category>books</category> </item> </receipt> When I sum the <gross/> elements: sum 1 & 2 = 16.369999999999997 sum 1 & 3 = 27.35 sum 2 & 3 = 30.72 What makes certain combinations return such crazy numbers? I did find one other thread in the mailing list about this, it got an answer but didn't really explain much. I have a schema for prices in the XForm, should I be loading that somehow? The only workaround I have now is like, "let $grosses:= for $gross in $receipts//gross return xs:decimal($gross)" but I'm hoping there's a more straightforward way. Not sure if this is implementation specific or if it's not defined or what. If I should ask elsewhere, please let me know :-) Be well, Jay

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Writing 
by Giuseppe G. A. Celano 11 Jun '20

11 Jun '20

Hi, I would like to print a comment containing only a dash (i.e., ) , but this is not allowed. I tried to use "-" instead of - in comment { "-” }, but such a string is converted to ‘-', so the error is still there. How can I print  ? Should I simply use <----->? In any case, I see that data() does not convert - into -: how can I get the conversion? Thanks. Best, Giuseppe

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