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Re: [basex-talk] HTTPServer + gzip compression
by Stefan Koch 30 Dec '19

30 Dec '19

3 2

Parsing MusicXML files
by Joe Curtis 29 Dec '19

29 Dec '19

I am trying to solve a problem transferring musical information between two high end scoring programs using the industry standard MusicXML language. Although the majority (say 95%) of information is transferred correctly the remainder does not because the originating program gives a general classification of <words> in the file whilst the receiving program has a more sophisticated breakdown of the information. Rather than classifying it incorrectly it doesn't translate the information at all. The information occurs randomly throughout the score rather than in a regular pattern. What I am trying to do is read the MusicXML file and list the <words> where they occur together with the part identification and measure (bar) number to enable me to add the information manually at a later stage. I have come across BaseX while researching how to parse the files but am struggling to master the logic of xquery to achieve my aim. The structure of the file at my interest level is:-  <measure number="27" width="224"> <direction> <direction-type> <words default-x="9" default-y="20" justify="left" valign="middle" font-family="Times New Roman" font-style="normal" font-size="5.9683" font-weight="normal">tutti</words> and my xquery entries are:- let $score := doc('score')/score-partwise(:/part/measure/direction/direction-type/words:) for $word in ($score//words/text()) let $p := $score/part/@id let $m := $score/part/measure/@number return $word, $p, $m If I return just $word I get the relevant <words>entries but if I add $p and $m I get an error message 'undeclared variable $p' I realise that this is more of an xquery question than BaseX but I thought I would come here first. Any help would be greatly appreciated. Joe Curtis .

2 1

Update to a single document changes @modified-date on all DB documents in db:list-details()
by France Baril 29 Dec '19

29 Dec '19

Hi, I'm running a few tests after upgrading a web application to 9.3.1. I have this issue where I am trying to get the documents modified since a certain date/time. However, even is a single document is modified db:list-details returns the same modified-date for all listed documents. To reproduce; 1. Run list-details() on a DB to see dates. 2. Thought WebDAV, modify one of the document in the DB 3. Run list-details() again on that DB. Expected result: the @modifed-date should be different on the document modified in #2 Actual result: all documents have a new @modified-date. -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com

2 2

Lost prof:time in terminal after upgrade to 9.3.1
by France Baril 28 Dec '19

28 Dec '19

Hi, After upgrading to 9.3.1, I no longer get my prof:time info in the terminal. DEBUG is set to true in .basex and I don't remember changing any option on in older installations to enable prof:time. Documentation of profiling module doesn't mention any required settings and I'm not seeing a note in the CHANGELOG either. What am I missing? -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com

2 1

Re: [basex-talk] HTTPServer + gzip compression
by Stefan Koch 23 Dec '19

23 Dec '19

1 0

R package
by Ben Engbers 23 Dec '19

23 Dec '19

Hi, Some years ago, I have written a R-client for BaseX. That client used a R-file that could be sourced into your R-code (https://github.com/BaseXdb/basex/tree/master/basex-api/src/main/r/RbaseXCli…). Since not all functions from the server protocol were implemented, I decided to rewrite the client and build a package. This package has now been accepted by Cran (https://cran.r-project.org/web/packages/RBaseX/index.html). I am still working on some improvements but that will take some time. In the meantime, enjoy it. Ben Engbers

1 0

Improper use or potential bug
by France Baril 23 Dec '19

23 Dec '19

This .xq works the first time when returning db:create. However, once the DB are created, if I run it again, files are note replaced. Instead, I get java.lang.ArrayIndexOutOfBoundsException. I can send the DB in private if necessary for debugging. The result is not exactly an index, it's just flattening a few levels of indirection to make future queries faster. I was testing this on 9.2.3. Also a side question, is there a way to rewrite this query so not all DBs are locked? I get lock: global. I would like to lock only DBs that start with 'index-prompt-' I tried hard coding the prefix in the db:create and db:replace fonctions but that didn't help. Since I will have this running on a loop (cannot catch updated on src DB), I don't want to lock the whole system each time this query is running. It does take a good 12 seconds to run. (: USAGE: for $prompt in db:attribute('index-prompt-en-us', 'setup_as_new', 'name')/.. return $prompt => prof:time() :) let $langs := for $lang in db:list()[string-length(.) = 5][substring(., 3, 1) = '-'] return $lang return for $lang in $langs let $index-db := 'index-prompt-' || $lang let $prompt-file-name := 'prompts-' || $lang || '.xml' let $index := <index>{ for $string-group in db:open('global-content')//*[name()='string-group'] let $prompt-this-lang := $string-group/child::*[@xml:lang=$lang][normalize-space(.)!=''] let $prompt-base := if (exists($prompt-this-lang)) then $prompt-this-lang else $string-group/child::*[@xml:lang='en-us'] let $p2 := db:attribute('global-content', $string-group/data(@key), 'key')/..[name()='prompt'][ancestor::*[last()]/name()='prompt-refs'][@package=$string-group/data(@package)][@pkg-version=$string-group/data(@pkg-version)] let $prompts := ( for $prompt-match in $p2 return copy $copy := $prompt-base modify ( for $attr in $prompt-match/@*[name()!='package' and name()!='pkg-version' and name()!='key'] return insert node $attr into $copy ) return $copy ) return $prompts }</index> return if (db:exists($index-db)) then db:replace($index-db, $prompt-file-name, $index) else db:create($index-db, $index, $prompt-file-name , map { 'updindex': true() }) -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com

2 2

UPDINDEX on custom index structures not working... where is my missing link?
by France Baril 21 Dec '19

21 Dec '19

Hi, I'm trying to build something that is similar to custom indices but that actually returns resolved nodes (nodes created by manipulating and merging nodes from the original DB). 1- I created a script that creates new index DBs. UPDINDEX and AUTOOPTIMIZED are set on both the 'index' DB and the DB from which the new DBs were created 2- I can create a query on any of the new 'index' DBs to extract the nodes I want. 3- After I change the content in the source DB, the response shows that the nodes in the 'index' DBs are not updated. I get the old result. I feel that I am missing a link between the source and the index DBs to make the update mechanism work. Since I do not want to get the original node, but one that I create, I did not use db:node-id or db:open-id shown in the documentation example. Is that where the link is created? CODE THAT CREATES THE INDEX DBs let $langs := for $lang in ('en-us', 'es-es') (:db:list()[string-length(.) = 5][substring(., 3, 1) = '-']:) return $lang return for $lang in $langs let $index := <index>{ for $string-group in db:open('global-content')//*[name()='string-group'] let $prompt-this-lang := $string-group/child::*[@xml:lang=$lang][normalize-space(.)!=''] let $prompt-base := if (exists($prompt-this-lang)) then $prompt-this-lang else $string-group/child::*[@xml:lang='en-us'] let $prompts := for $prompt-match in db:open('global-content')/*[name()='prompt-refs']/*[name()='prompt'][@package=$string-group/data(@package)][@pkg-version=$string-group/data(@pkg-version)][@key=$string-group/data(@key)] return copy $copy := $prompt-base modify ( for $attr in $prompt-match/@*[name()!='package' and name()!='pkg-version' and name()!='key'] return insert node $attr into $copy ) return $copy return $prompts }</index> return db:create('index-prompt-' || $lang, $index, 'prompts-' || $lang || '.xml', map { 'updindex': true(), 'autooptimize': true() }) CODE THAT QUERIES THE 'INDEX' DBS (# db:enforceindex #) { for $prompt in db:attribute('index-prompt-en-us', 'setup_as_new', 'name')/.. return $prompt => prof:time() } -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com

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BaseX 9.3.1: Bug Fixes, Performance Tweaks
by Christian Grün 20 Dec '19

20 Dec '19

Hi all, A new BaseX maintenance release is available. It contains minor bug fixes and performance tweaks: http://basex.org Have fun with the new release, have a good time, Christian BaseX Team

1 0

How many QueryModule instances can be created?
by Johannes Echterhoff 18 Dec '19

18 Dec '19

Hello, We are struggling with a situation where we have built a custom Java QueryModule (as described in http://docs.basex.org/wiki/Java_Bindings) - let's call it M1, and that module is imported by two other XQuery modules (let's call them M2 and M3). When executing an XQuery that imports M1 and the other XQuery modules M2 and M3 within the BaseX GUI, multiple different instances of M1 are created. That is an issue, because we initialise the module M1 with some information (a custom geometry index) before calling any other function of M1. This initialization shall only occur once, because it is quite time-consuming. Also, the information from this initialization procedure must be available whenever the (non-initialization) functions of M1 are called - whether in the XQuery or the other modules M2 and M3. The situation is as follows: * testquery.xq imports the custom module M1 * testquery.xq also imports the XQuery modules M2 and M3, which are stored in other XQuery files; M2 and M3 both import M1 * the custom module is initialized in testquery.xq - not in M2 and M3 * non-initialization functions of M1 are called in testquery.xq, as well as by functions declared in M2 and M3 - but only after initialization functions of M1 have been called in testquery.xq We get exceptions when functions of M1 are called by functions declared in M2 and M3, apparently because multiple instances of M1 have been created by BaseX (tested with the BaseX GUI), and only one of them has been initialized (in testquery.xq). After this lengthy introduction of the issue at hand, here are my questions: * Is it expected behavior that multiple instances of a Java QueryModule (M1, in my scenario) may be created and used during an execution of a query scenario like the one described above - or in general? Or should there only ever be a single such instance, regardless of how many times the module is imported? o Note: The functions used to initialize M1 are non-deterministic and declared as such. Not entirely sure if that makes a difference regarding how many times M1 would be created. * I have the same questions for the case that the Java QueryModule M1 was packaged in a XAR (as described in http://docs.basex.org/wiki/Repository#EXPath_Packaging). Would such a packaging approach actually make any difference? Apologies that I do not have a small, self-contained example project to demonstrate this. I hope that I explained the issue with sufficient detail and clarity. If not, just let me know. Best regards, Johannes P.S.: If you have suggestions for a better approach of handling such a scenario, where a QueryModule must be initialized before it can be used, and there shall only be a single instance of this module within the execution of an XQuery, let me know.

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