BaseX-Talk June 2020

basex-talk@mailman.uni-konstanz.de

27 participants
26 discussions

[FULLTEXT] How to search for underscore seperated words ?
by ETANCHAUD Fabrice 05 Jun '20

05 Jun '20

Hi all BaseX users, When I search for 'YET_ANOTHER_SILLY_KEYWORD', ft:search gives me all text nodes containing any of the YET ANOTHER SILLY KEYWORD words. I tried the different search modes, but could not find a way to get ft:search return only the text nodes containing the concatenation. Does anybody have a solution ? Best regards, [MAIF] Fabrice ETANCHAUD Unité Etudes Informatiques - MAIF VIE 50 avenue Salvador Allende 79029 Niort Cedex 9 fabrice.etanchaud(a)maif.fr MAIF.FR<http://www.maif.fr/> | Retrouvez-nous aussi sur [Facebook] <https://www.facebook.com/MAIFassureur> [Twitter] <https://twitter.com/MAIF> [Youtube] <https://www.youtube.com/user/maif>

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HashMap insertion bug - node ID is different on get than on put
by Buddy Kresge 05 Jun '20

05 Jun '20

This can be reproduced in 9.2.4 and 9.3.3 (only tried those 2 versions) We are using java:HashMap, and we are seeing that when we insert a node into the HashMap from a file and do a subsequent hash:get, the generate-id() for the hash:get is different than the original generate-id value from the hash:put. Note: when we read the XML from a file, that is when we see the issue, if we declare the XML in Basex GUI, we do NOT see this behavior. Here are the examples: Scenario #1: XML is a variable in the BaseX GUI session --- no bug ---------------------------------------------------------------------------------------- declare namespace hash = "java:java.util.HashMap"; let $data := <A> <B> <C> <Message>Hi there</Message> <Message>How are you</Message> <D> <E>1</E> </D> </C> </B> </A> let $node := $data//*:C let $kb := hash:new() let $nullOp := hash:put($kb, generate-id($node), $node) let $getNode := hash:get($kb, generate-id($node)) return (generate-id($node), generate-id($getNode)) Result: id6312150 id6312150 Scenario #2: XML is read in from a file --- bug appears ---------------------------------------------------------------------------------------- Move the data into a file and then read in from the file, that is when we see the issue. declare namespace hash = "java:java.util.HashMap"; let $file := doc('SampleData.xml') let $node := $file//*:C[1] let $kb := hash:new() let $null := hash:put($kb, generate-id($node), $node) let $getNode := hash:get($kb, generate-id($node)) return (generate-id($node), generate-id($getNode)) Result: id30601d5 id30602d0 Thanks in advance for your assistance Buddy

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Random Numbers from Random.org
by Leo Studer 03 Jun '20

03 Jun '20

Hello I try to use random numbers from random.org. Here my xpath let $urand := function(){doc("https://www.random.org/integers/?num=1&min=0&max=1000000000&col…")//*:pre/number() div 1000000000} return for $i in 1 to 10 return $urand() Which brings 10 time the same value, however, every run time a different one. What is wrong with this code? Thanks in advance for your valuable input Yours Leo

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Indexes getting removed after update operation in database
by DK Singh 02 Jun '20

02 Jun '20

Hi, I am using Basex version 8.6.6 i am creating full text indexes on database from the GUI, when any update operation is happening on the database all created indexes getting removed. when i use ft module to search anything then error occurs that database "test" has not full text index. I am expecting if index already created then it should not removed, please suggest how can i resolve this issue. Regards Dharmendra Kumar Singh

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Eclipse editor support and authentication
by Ben Pracht 02 Jun '20

02 Jun '20

Hi Folks, Perhaps I'm using too new of an Eclipse (Photon), but I'm not able to integrate Eclipse with BaseX. I installed the trial Oxygen plugin, though I don't want to pay for it. Even then, it would not offer a BaseX datasource, only one for ExistDB. I tried to install XQDT, but it could not be installed without downgrading many components, which I did not want to do. As an Eclipse person, using IntelliJ would not be very productive as I've gotten used to the Eclipse keyboard shortcuts. I'd like to create a server program based in BaseX with RESTful xquery based services. Initially, it would be a CRUD type application. It doesn't need high performance, just not terrible, and I'd like to be able to authenticate into it. I'm confident BaseX can handle the task, it's just getting an editor capable of handling it. Using the GUI that comes with BaseX is good for small tasks, but not so good for larger applications. It doesn't appear that there's much in the way of XQuery support in Eclipse anymore, and even the XQDT if it could be installed doesn't support the newer 3.1 type xquery (I believe I read). Can someone recommend a good editor? I'm using GVim for many small projects, though it takes work to get it to work with larger projects efficiently (CTags helps for C/C++ code, but I dont' think it works with XQuery). Separately, would it be possible to develop a secure BaseX based application that users could log in, and authenticate into, store delicate personal information and have it be sufficiently secure? Could it be at least as secure as, say a Tomcat application? Sorry to ask this question, I do app development, but usually my role comes in after the user has been authenticated using something like OAuth or other. Best Regards, Ben Prachtcom <ben.pracht(a)gmail.com>

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RESTXQ - java.lang.OutOfMemoryError: Java heap space
by Sebastian Guerrero 02 Jun '20

02 Jun '20

Hi BaseX team! A quick question. Is there some known bug/common setting missing for RESTXQ and memory problems? I have this simple module ( into /webapp, a .xqm file ) : *module namespace exe = 'http://site.com/execute <http://site.com/execute>';* *declare * *%updating* * %rest:path("update")* * %rest:consumes("application/x-www-form-urlencoded")* * %rest:POST function exe:update() {* * xquery:eval-update(request:parameter("query"))* *};* I use it to execute some updates against some databases from different clients. Everything works fine by a while, but after some time I get this error [1]: *java.lang.OutOfMemoryError: Java heap space* I noticed that every call to *update()* the memory grows and grows until it reaches the *OutOfMemoryError*. [2] If I stop the HTTP server, the memory is released immediately. [3] What I'm doing wrong? Is there some command to execute the GC? Is this a problem with "*xquery:eval-update()"*? Am I using it in the wrong way? Best regards, Sebastian. [1] https://imgur.com/DrcbwQg [2] https://imgur.com/fonmrhm [3] https://imgur.com/SYFBFK8

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BaseX-Talk June 2020