- BaseX-Talk - mailman.uni-konstanz.de

Revisiting XMLPrague
by Christian Grün 18 Feb '14

18 Feb '14

Dear subscribers, it was great to meet some of you live in Prague! And once again I would like to thank all our speakers (Lars Johnsen, Gerrit Imsieke, Yoann Maingon, Jean-Marc Mercier and Michael Sperberg-McQueen) for making the user meeting to a memorable event! Have fun with BaseX 7.8, and we are looking to your feedback, Christian PS: Maybe we'll see each other in London or Amsterdam, or at the Balisage? We'll tell you in time if we will be participating as well.

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issue with HTML:parse
by Sophie Petit 18 Feb '14

18 Feb '14

Dear BaseX team, I'm using BaseX for my studies with Xavier-Laurent Salvador from Paris13. I've got a puzzling issue with html:parse. I'm trying the request below using html:parse in order to get a list of the urls from a webpage and I'm getting this message error: "Ligne 19: Invalid character found: '"' " for $x in (html:parse(http:send-request( <http:request method='get' override-media-type=' application/octet-stream' href= 'http://www.crealscience.fr/'/ >) [2])//@href[matches(.,"http")]) return $x The same request gives this kind of output errors with any url. Html:parse stops at any error in the page's HTML code. A header with "declare option output:method "text";" was added to the request but it didn't solve the problem. If I insert the same request in a RestXQ file, it works perfectly. Do you have any suggestions to solve that problem? Best, Sophie Petit (basex 7.8 on debian)

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Sought: a pattern of file:list usage
by Hans-Juergen Rennau 18 Feb '14

18 Feb '14

Dear BaseX team, perhaps you have a recommendation concerning the use of the file module. The issue at hand is this. The function file:list (like any function in the file module, per EXPath specification) resolves relative paths against the current working directory. But the fn:doc function, on the other hand, resolves (per default) relative URIs against the static base URI of the containing XQuery module. If an application receives relative directories as external parameters and then obtains file names via file:list - how can one access the listed files, not knowing what the current working is, thus not knowing how to resolve those relative paths? As far as I can see, neither XQuery nor the file module offer a way how to learn the current working directory. One way out would be this pattern: avoid passing to file:list relative paths as supplied from without; but pass to the function always the result of resolving any relative paths against the static base URI of the tool. And, of course, specify your application to resolve relative paths against the tool URI, rather than against the working directory. It is a bit awkward to ask the user to specify relative paths against the tool location, but the only alternative which I now see would be to ask the user to supply the working directory explicitly. But perhaps I overlook something? Do you have a better solution to the general problem? Kind regards, Hans-Juergen

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Using BaseX as a standalone xquery library in Java
by Johan Mörén 18 Feb '14

18 Feb '14

Anything special to think about when using BaseX outside the database-context? I have built some solutions using the QueryProcessor for generating filesystem reports using the supplied modules for calculating file-sizes and checksums. I hava also built a number of wrappers for calling and aggregating results from web-services. All these queries are embedded and run in our normal java-processes. Everything has worked out really well. And BaseX gives you access to a lot of good functionality like XQuery 3.0 and a rich set of modules. But I'm a bit curious if there are any drawback or special things to think about with using Basex as a general xquery-library like you would use Saxon for example? Regards, Johan Mörén

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BaseX 7.8: The XMLPrague Edition
by Christian Grün 17 Feb '14

17 Feb '14

Dear subscribers, thanks for your continuing support! We are very pleased to announce BaseX 7.8 (the XMLPrague Edition). The new version was designed to further increase your productivity, no matter if you develop feature-rich XQuery applications or use BaseX as a light-weight XMLDB. You can expect the following great features: * A new project view allows you to open, edit and manage your project files directly in the GUI and search files and contents in realtime. * The integrated editor provides many new short cuts and code completions for writing XQuery modules. * Delete and insert operations are executed faster than ever before, values are updated in-place whenever possible, and a new convenience operator has been added for transform expressions * XQuery functions are now inlined and further optimized. Tail call detection and static typing has been improved, and (sub)sequences are processed much faster. * Various XQuery Modules have been enhanced (JSON, CSV, Unit, Map, XQuery, Full-Text, EXPath File), and the EXPath Binary Module has been added * BaseX is now available in Russian and Spanish. Thank you to Oleksandr Shpak and Carlos Marcos! More details can be found in our documentation (http://docs.basex.org). We are looking forward to your feedback, and we hope to see many of you in Prague this Friday (http://lanyrd.com/2014/basex)! Have fun, Christian BaseX Team

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lazy evaluation for variables?
by Wiemer, Sebastian 17 Feb '14

17 Feb '14

Hi, given the following example let $result := doc(‚myDataBase‘)/result return $result will $result be evaluated lazily, or will it be stored in memory? kind regards, Sebastian

2 2

transform before update query
by Imsieke, Gerrit, le-tex 16 Feb '14

16 Feb '14

This XQuery update related question might be not the most BaseX-specific question that has ever been asked on the list, but anyway: I’m currently improving the performance of sxedit (that I presented at XML Prague yesterday). One nasty workaround that I have to do in the browser is escaping the names of the TEI elements body and head when I generate TEI XML from HTML despite the fact that these elemens are in a different namespace (because browsers…). So I have TEI XML with the elements _____head and _____body. I serialize this XML and use regex replacement on the string when I submit the TEI XML for download or for storage in BaseX. (Yes, it seems silly to serialize the XML before POSTing it to RESTXQ and then using parse-xml(), but don’t mind that for the moment.) The function that does the storage is at https://github.com/gimsieke/sxedit/blob/master/lib/basex/restxq/sxedit.xqm#… Now I thought that I might do without the performance-killing string replacement in the browser if I let BaseX transform the posted data prior to replacing the stored subtree with what was posted. So I tried the following for the function body: copy $doc := parse-xml($wrapper) modify ( for $n in $doc/descendant-or-self::*[starts-with(local-name(), '_____')] let $repl := replace(local-name($n), '^_____', ''), $uri := namespace-uri($n) return rename node $n as QName($uri, $repl) ) return replace node db:open($doc/*:frag/@db, $doc/*:frag/@doc)//*[path() eq $doc/*:frag/@xpath] with $doc/*:frag/* upon which I get: [XUST0001] Transform expression: no updating expression allowed. How would I achieve the transform and then update operation? Gerrit

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Re: [basex-talk] How do I create UNIX/Linux shell scripts that connect to BASEXCLIENT
by DAIANE ROBERTA CANDIDA 15 Feb '14

15 Feb '14

Hello, Thank you all for help me. My problems is solved by the code below: basexclient -U admin -P admin -L -V -v -o result.xml -c consultas.bsx >> detail.txt Regards, Daiane From: dairc_8(a)hotmail.com To: alexander.holupirek(a)uni-konstanz.de Subject: RE: [basex-talk] How do I create UNIX/Linux shell scripts that connect to BASEXCLIENT Date: Sat, 15 Feb 2014 16:41:11 -0200 Hello Alexander, Those tips were very helpfull, thank you. I was wondering if the content from V parameter could be saved into the result file instead just be in the screen. It is fine like this but could be better if I have the execution time also into the result.xml basexclient -U admin -P admin -L -V -o result.xml -c consultas.bsx Regards, Daiane > Subject: Re: [basex-talk] How do I create UNIX/Linux shell scripts that connect to BASEXCLIENT > From: alexander.holupirek(a)uni-konstanz.de > Date: Sat, 15 Feb 2014 18:40:13 +0100 > To: dairc_8(a)hotmail.com > > % cat test.xml > <test> > <a/> > > <c/> > </test> > > % cat query.xq > db:create('test', '/Users/holu/Desktop/test.xml') > > % basexserver& > > % basexclient -U admin -P admin -L -V query.xq > > Query: > db:create('test', '/Users/holu/Desktop/test.xml') > > Parsing: 0.94 ms > Compiling: 0.04 ms > Evaluating: 16.31 ms > Printing: 0.87 ms > Total Time: 18.16 ms > > Hit(s): 0 Items > Updated: 1 Item > Printed: 0 Bytes > Read Locking: none > Write Locking: local [test] > > Query "query.xq" executed in 18.16 ms. > > % cat query-1.xq > doc('test')//b > > % basexclient -U admin -P admin -L -V -o result.xml query-1.xq > > Query: > doc('test')//b > > Compiling: > - pre-evaluating fn:doc("test") > - simplifying descendant-or-self step(s) > - converting descendant::*:b to child steps > > Optimized Query: > db:open-pre("test",0)/*:test/*:b > > Parsing: 0.37 ms > Compiling: 43.1 ms > Evaluating: 0.1 ms > Printing: 7.48 ms > Total Time: 51.04 ms > > Hit(s): 1 Item > Updated: 0 Items > Printed: 4 Bytes > Read Locking: local [test] > Write Locking: none > > Query "query-1.xq" executed in 51.04 ms. > > % cat result.xml > > > On 15.02.2014, at 18:29, DAIANE ROBERTA CANDIDA <dairc_8(a)hotmail.com> wrote: > > > Hello Alexander, > > > > Thanks for answering. > > > > I have to get the execution time from some queries. > > It will take too much time because the dataset is very large so i need to automatize those task. > > > > I tried get from the commands below: > > > > arwen@arwen:~/daiane_oracle/BasexQuery$ basexclient -U admin -P admin consultas.bsx -o result.tx 1+1 > > Stopped at /home/arwen/daiane_oracle/BasexQuery/consultas.bsx, 1/14: > > [XPST0003] Unexpected end of query: 'db_teste; > > XQUER...'. > > Dumping Java heap ... done. > > > > The problem is that if i execute the query from the command line it is ok and when I execute from a file it returns error. > > > > File: consultas.bsk > > --------------------------------------------------------------------------------------------------------- > > OPEN db_teste; > > XQUERY db:open('db_teste')/books/book/metadata/title [. contains text "usability"] > > -------------------------------------------------------------------------------------------------------- > > > > What should I do? > > > > Regards, > > > > Daiane > > > > > > > > > Subject: Re: [basex-talk] How do I create UNIX/Linux shell scripts that connect to BASEXCLIENT > > > From: alexander.holupirek(a)uni-konstanz.de > > > Date: Sat, 15 Feb 2014 18:02:53 +0100 > > > CC: basex-talk(a)mailman.uni-konstanz.de > > > To: dairc_8(a)hotmail.com > > > > > > Hi Daiane, > > > > > > Start server: > > > > > > $ basexserver & > > > > > > Use client to connect, execute query and store result in file: > > > > > > $ basexclient -U admin -P admin -o result.tx 1+1 > > > $ cat result.txt > > > 2 > > > > > > Doing stuff like that from within a shell script should be no problem. > > > Are there any specific issues you are facing? > > > > > > Alex > > > > > > On 15.02.2014, at 17:57, DAIANE ROBERTA CANDIDA <dairc_8(a)hotmail.com> wrote: > > > > > > > Hello, > > > > > > > > I want to create a Shell script to connect basexclient, running queries and put the output into a file. > > > > > > > > How can I do that? > > > > > > > > > > > > Regards, > > > > > > > > Daiane > > > > > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > Dr. Alexander Holupirek > |-- Room E 221, 0049 7531 88 2188 (phone) 3577 (fax) > |-- Database & Information Systems Group, U Konstanz > `-- https://scikon.uni-konstanz.de/personen/alexander.holupirek/ > > >

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How do I create UNIX/Linux shell scripts that connect to BASEXCLIENT
by DAIANE ROBERTA CANDIDA 15 Feb '14

15 Feb '14

Hello, I want to create a Shell script to connect basexclient, running queries and put the output into a file. How can I do that? Regards, Daiane

3 2

BaseX has been updated on Filecluster.com
by FileCluster Support 13 Feb '14

13 Feb '14

Dear Developer, You have received this email because we have updated BaseX and this was the contact email for the application. Your application update status BaseX has been updated on FileCluster.com to the 7.8 version. You can check out your application on our site at: http://www.filecluster.com/Business-Office/Database-Management/Download-Bas… If you want to let your users know about your software page on FileCluster.com, to rate it and review it, you can also use this banner to link it: Promote your software As a software website, it`s our duty to help the developers promote their software. Fortunatelly, our software promotions are cost free, for more informations please visit our promotion page. Submit your press releases We are also accepting press releases from software developers. All you have to do is to submit your press release and we will take care of the rest. Useful developer links All the essential links you need as a developer on FileCluster.com: Link to us - download banners or text links for linking to FileCluster.com Submit your software - Submit your software via PAD or manually Submit your press release - submit your press releases using our online form Contact Us - contact our editors Promote your software - our promotions page If you do not wish to receive any further notifications or confirmations from FileCluster.com, please send us an email and request a contact removal (email removal). Keep in mind that this means you will not receive ANY contact from us, including: software promotions, update confirmations or security alerts (antivirus and spyware test results). Regards, Renta Cezar - Senior Editor FileCluster Labs www.filecluster.com

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Re: [basex-talk] problem with namespaces in baseX - Namespaces are inserted only once in the database
by Christian Grün 13 Feb '14

13 Feb '14

Hi Yannis, hi Panagiotis, our team member Lukas managed to fix the namespace bug just in time. A new snapshot is available [1], and we will be glad to get your confirmation if the problem is fixed. And a little announcement to everyone else: BaseX 7.8 will be released this afternoon! Christian ____________________________________ On Mon, Feb 10, 2014 at 8:38 AM, Lukas Kircher <lk(a)basex.org> wrote: > Hi Christian, > > ich schau's mir an, sobald es geht. > > Viele Gruesse & viel Erfolg in Stuttgart! > Lukas > > > On Sat, Feb 8, 2014 at 11:21 PM, Christian Grün <cg(a)basex.org> wrote: >> >> Hi Lukas, >> >> ich habe das aktuelle Update-/Namespace-Problem weiter vereinfacht; >> das Ergebnis findest du hier: >> >> https://github.com/BaseXdb/basex/issues/860 >> >> Könntest du versuchen, den Bug vor dem Release (Di/Mi) noch zu fixen? >> >> Grüße, bis vermutlich Montag! >> Christian >> >> >> >> ---------- Forwarded message ---------- >> From: Panagiotis Liakos <p.liakos(a)di.uoa.gr> >> Date: Sat, Feb 8, 2014 at 4:03 PM >> Subject: Re: [basex-talk] problem with namespaces in baseX - >> Namespaces are inserted only once in the database >> To: Christian Grün <christian.gruen(a)gmail.com> >> >> >> Hello Christian,, >> > >> > thanks for the XML file. Could you also provide me with the database >> > itself (e.g. as zip file)? >> > >> >> Here you go, I zipped the whole tomcat webapp, I hope that covers what >> you asked for: >> >> http://ariadni.di.uoa.gr/basex/BaseX78-20140203.150949.zip >> >> >> java.nio.channels.OverlappingFileLockException >> > >> > Have you always been using the client/server architecture for >> > accessing the database? >> > >> >> We mostly use xqj but in order to test something quick or replace a >> file I use the basexclient. Would you suggest something else? >> >> Panagiotis > >

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Re: [basex-talk] cross-document predicates
by Simon Görke 12 Feb '14

12 Feb '14

Christian, many thanks for your elaborations. It seems this is not really a 100% baseX topic any more, but maybe you (or somebody else) can give me another hint anyway. > I agree that the result is somewhat surprising, because you would possibly expect "/" to return all documents of your collection. This is exactly what I assumed (and hoped for) :-( > The following query will return the expected results (and it will usually be evaluated faster if you have indexed your documents): > let $refs := //b/b1/@ref > return //a1[@id = $refs] The problem is that for my application, I require pure xpath expressions (we have a GUI which is configurable by defining tuples of 1. a xpath expression to address data and 2. the desired gui / widget representation). However, if I got the implications of your explanation right, it seems to be impossible to solve my issue by using xpath only as it would require using two different contexts in one and the same expression. Could you (or another xpath pro) confirm this assumption of mine or maybe even come up with an alternate (non-xquery) idea? TIA Simon

2 1

Serialization xhtml --> html 5
by France Baril 11 Feb '14

11 Feb '14

Hi, I have quick question... Is it possible to view content saved as XHTML in a BaseX database as HTML 5 in a browser when accessing the content through a domain:port/rest/... address? Is this configurable through a serialization setting somewhere? Thanks -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com (514) 572-0341

2 2

cross-document predicates
by Simon Görke 11 Feb '14

11 Feb '14

Hello there, I am not really sure if the following is an issue or just a lack of understanding on my side. I have two documents and try to find elements from one based on (attribute-stored) constraints given in the other. A basic example structure looks as follows: <commands> <create-db name='test1'/> <add path='doc_a'><a><a1 id='1'/><b1 ref='1'/></a></add> <add path='doc_b'><b1 ref='1'/></add> </commands> Queries: //a1[@id=//a/b1/@ref] => 1 hit //a1[@id=//b/b1/@ref] => no hits? When putting the nodes in one and the same document (adding a common parental node), either query returns 1 hit: <commands> <create-db name='test2'/> <add path='doc'><any><a><a1 id='1'/><b1 ref='1'/></a><b1 ref='1'/></any></add> </commands> What I would have expected is 1 hit in any of the cases, but finding the correct context in predicate expressions confused me more than one time... Regards, Simon (BaseX Version is 7.8 beta 8f51466)

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All Earth - Mikrotik - SXT Lite 5 R2 - 5 Ghz 2x2 Mimo 300Mbps 500mW 16dBi
by All Earth - Vendas 10 Feb '14

10 Feb '14

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1 0

http:send-request with HTTPS
by Marco Lettere 07 Feb '14

07 Feb '14

Hi all, anyone succeded in using send-request to send data to an HTTPS server? No matter how hard I try (even handling all that Certificate import stuff) I conntinuosly get this error message. [HC0001] java.security.cert.CertificateException: No subject alternative names present Any hints? Thank you, Marco. __

4 6

Using geo module in BaseX GUI 7.7.2
by Nathan Braun 07 Feb '14

07 Feb '14

Hi, when I want to use the geo functions out of the GUI, I get the error " [XPST0017] Function v not implemented." What could be possibly wrong? What I did: 1) enable geo module through Options->Packages->Install... 2) chose etc/modules/geo.xqm 3)In the Editor window, took an example from the Wiki http://docs.basex.org/wiki/Geo_Module import module namespace geo = "http://expath.org/ns/geo"; declare namespace gml='http://www.opengis.net/gml'; let $point := <gml:Point><gml:coordinates>1,2</gml:coordinates></gml:Point> return geo:dimension($point) Is there anything else to consider? As far as jvisualvm says, the jars such as basex-api.jar and jts-1.13.jar are on the classpath. Any ideas? Thanks, Nathan

2 1

problem with namespaces in baseX - Namespaces are inserted only once in the database
by Ioannis Kavvouras 07 Feb '14

07 Feb '14

Hello, While trying to execute a replace query [1], we face the following problem: The new "capabilities" node contains a group of subnodes which have in their definition the same namespace definition (xmlns namespace). The problem is that in the result after the replacement the namespace definition is only in the first node (ows:ServiceIdentification). In the following nodes the majority of the attributes in the namespace definition are missing and as a consequence the xml file is corrupted as the definition of the elements are undefined. An example of a corrupted node where the attributes of the namespace definition are missing is mentioned at [2]. [1] https://dl.dropboxusercontent.com/u/78985205/query.txt [2] https://dl.dropboxusercontent.com/u/78985205/result.txt Regards Yannis

3 6

deleting nodes/elements permanently from BaseX
by Irfan Khan 06 Feb '14

06 Feb '14

Hello, I am new to BaseX and am doing basic manipulations, but can't delete nodes/elements permanently from a Database. So these are my databases: > list name Resources Size Input Path ---------------------------------------------- Example 1 34928 Experiment_Owner 3 4651 Store 3 14015 TestbyIrfan 0 4541 Users 299 86299 Workon 1 4753 6 database(s) open Users XQUERY / <user> <fullname>null</fullname> <username>user590</username> <password>3b36431be670500f759191b1cc27adc3</password> <experiments/> <email>email</email> <role>ROLE_BEE</role> </user><user> <fullname>null</fullname> <username>user591</username> <password>18b944141c4104d3a577516e7aa429</password> <experiments/> <email>email</email> <role>ROLE_BEE</role> </user> afterwards to delete the users I tried commands such as: XQUERY delete node db:open("Users")//user or XQUERY for $v in /user where $v[contains(username,"user")] return delete node $v/user then the records disappear, the command XQUERY / doesn't show the records of users, however when I do a command list, the size of the database and the number of resources don't change. I tried to do an Export like: EXPORT /root/BEES_CENTRAL/BaseXData/data but no change.... So my question is how can I commit the changes made by Delete to disk permanently ? Thanks a lot. Regards, Irfan

2 1

database corruption
by Michel Banguerski 05 Feb '14

05 Feb '14

Greetings, I am currently using BaseX 7.7.2 on windows 7. Periodically I get a corrupted database which topically manifests itself by the following message: <basex-talk(a)mailman.uni-konstanz.de>Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 7.7.2 Java: Oracle Corporation, 1.7.0_45 OS: Windows 7, x86 Stack Trace: java.lang.ArrayIndexOutOfBoundsException: 33 at org.basex.io.random.TableDiskAccess.flush(TableDiskAccess.java:124) at org.basex.data.DiskData.finishUpdate(DiskData.java:212) at org.basex.core.cmd.Add.run(Add.java:109) at org.basex.core.Command.run(Command.java:345) at org.basex.core.Command.exec(Command.java:321) at org.basex.core.Command.execute(Command.java:78) at org.basex.server.LocalSession.execute(LocalSession.java:122) at org.basex.server.Session.execute(Session.java:37) at org.basex.core.Main.execute(Main.java:146) at org.basex.core.Main.execute(Main.java:130) at org.basex.core.Main.console(Main.java:90) at org.basex.BaseX.<init>(BaseX.java:168) at org.basex.BaseX.main(BaseX.java:38) Once the database is corrupted there is no means to get the information back. In order to restore a backup I have to manually shutdown running java processes to remove the locks. I was able to narrow the circumstances of the corruption event to the following. - The corruption occurs when adding a resource to the database - The added resource needs to be big enough (one additional characher or xml node makes the difference) - The database has to be in a certain state at the moment of the resource addition for the corruption to happen: the same resource added at a different time will note cause corruption - The database could leave the 'pre-corruption' state if some activity happens I was able to capture a database in 'pre-corruption' state in a backup, the database has no resources (all removed previously) and the backup is 44Kb I also have an couple of XML files that cause corruption of this database when added both are 2kb. I mostly experience the corruption when using db:add() or db:replace() functions in xqm files but in the example I managed to capture the corruption happens when issuing the add command in CLI as well. I can provide the backup and XML files but I suppose that sending them to the list as attachments would not be welcomed. I performed the same test with the same result on Linux: - restaure the 'pre-corrupted' backup - open the database - add the XML file Finally I performed the same tests with BaseX78-20140203.150949 and no corruption happened. I'm seeking the most stable configuration for my application and therefore I would like to have Your opinion: Should I seek a workaround in BaseX 7.7.2 to avoid corruption or should I go with 7.8 in spite it being in beta stage? TIA Best regards Michel

2 1

database corruption
by Michel Banguerski 05 Feb '14

05 Feb '14

Greetings, I am currently using BaseX 7.7.2 on windows 7. Periodically I get a corrupted database which topically manifests itself by the following message: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 7.7.2 Java: Oracle Corporation, 1.7.0_45 OS: Windows 7, x86 Stack Trace: java.lang.ArrayIndexOutOfBoundsException: 33 at org.basex.io.random.TableDiskAccess.flush(TableDiskAccess.java:124) at org.basex.data.DiskData.finishUpdate(DiskData.java:212) at org.basex.core.cmd.Add.run(Add.java:109) at org.basex.core.Command.run(Command.java:345) at org.basex.core.Command.exec(Command.java:321) at org.basex.core.Command.execute(Command.java:78) at org.basex.server.LocalSession.execute(LocalSession.java:122) at org.basex.server.Session.execute(Session.java:37) at org.basex.core.Main.execute(Main.java:146) at org.basex.core.Main.execute(Main.java:130) at org.basex.core.Main.console(Main.java:90) at org.basex.BaseX.<init>(BaseX.java:168) at org.basex.BaseX.main(BaseX.java:38) Once the database is corrupted there is no means to get the information back. In order to restore a backup I have to manually shutdown running java processes to remove the locks. I was able to narrow the circumstances of the corruption event to the following. - The corruption occurs when adding a resource to the database - The added resource needs to be big enough (one additional characher or xml node makes the difference) - The database has to be in a certain state at the moment of the resource addition for the corruption to happen: the same resource added at a different time will note cause corruption - The database could leave the 'pre-corruption' state if some activity happens I was able to capture a database in 'pre-corruption' state in a backup, the database has no resources (all removed previously) and the backup is 44Kb I also have an couple of XML files that cause corruption of this database when added both are 2kb. I mostly experience the corruption when using db:add() or db:replace() functions in xqm files but in the example I managed to capture the corruption happens when issuing the add command in CLI as well. I can provide the backup and XML files but I suppose that sending them to the list as attachments would not be welcomed. I performed the same test with the same result on Linux: - restaure the 'pre-corrupted' backup - open the database - add the XML file Finally I performed the same tests with BaseX78-20140203.150949 and no corruption happened. I'm seeking the most stable configuration for my application and therefore I would like to have Your opinion: Should I seek a workaround in BaseX 7.7.2 to avoid corruption or should I go with 7.8 in spite it being in beta stage? TIA Best regards

1 0

Re: [basex-talk] "Out of Main Memory" error
by Christian Grün 04 Feb '14

04 Feb '14

Hi Geoff, have you assigned enough memory to the JVM on the 48GB machine (via -Xmx)? You may need to edit the BaseX start scripts [1] for that (but it depends on how you starting BaseX). Hope this helps, Christian [1] http://docs.basex.org/wiki/Start_Scripts ____________________________________ > I get an "out of main memory" error when I try an xquery in Basex GUI on a > ~5GB xml database file on an HP 48GB RAM 12 core Z600 workstation. I could > run the query on my 8GB RAM laptop without a problem. Is there some way I > can increase my available memory on my workstation to accommodate large xml > files? > > Thanks. > > Geoff > > -- > > ************************************* > Geoffrey Hougland > 7902 Kara Ct > Greenbelt MD 20770 > 240-600-3730 cell > 301-776-3212 home > ************************************* >

1 0

Opening BaseX in read only mode
by iClays 03 Feb '14

03 Feb '14

Is there a way to open basex in readonly mode? Let's say you have two server pointing same basex, could one open in read mode and the other read/write mode? How could that be achieved if any? Thankx

2 1

function idref() and one-to-many
by Tsvetanka Georgieva-Trifonova 03 Feb '14

03 Feb '14

Thank you for your answer! But this solution does not work with one-to-many relationships. When I run the following script: let $i := <root> <a id = "a1" idref = "b1"> aaa1</a> <a id = "a2" idef = "b1">aaa2</a> <a id = "a3" idef= "b2"> aaa3</a> <a id = "a11" idref = "b2"> aaa11</a> bb1 bb2 </root> return $i/*[matches(@idref, 'a1')] BaseX produces the result: bb1 bb2 that is different from: bb1 Besides, my question is about the function idref()? Is it supported? I find some examples here: http://www.xqueryfunctions.com/xq/fn_idref.html I have defined DTD, schema, but the result is the same. BaseX requires the name of the attribute-identifier to contain “id” and the name of the attribute with references to contain ‘idref’. But the function idref() returns result only if the relationship is one-to-one. I would be grateful if you tell me how to apply the function idref() when the relationship is one-to-many. Best regards, Tsvetanka

2 3

Xquery returns 'Out of Main Memory'
by DAIANE ROBERTA CANDIDA 03 Feb '14

03 Feb '14

Hello, The query below returns 'Out of Main Memory': XQUERY collection("/home/arwen/daiane_oracle/loading_inex2009/xml_pages/")//article[.//text() contains text "Nobel" ftand "prize"] I am using basexclient. I have a collection of xml files that have 14GB size. -------------------------------------------------------------------- > LIST name Resources Size Input Path ---------------------------------------------------------------------- bd_inex2009 730283 16263937902 --------------------------------------------------------------------- I dumped those files by the commands below: ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles1/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles2/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles3/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles4/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles5/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles6/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles7/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles8/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles9/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles10/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles11/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles12/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles13/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles14/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles15/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles16/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles17/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles18/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles19/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles20/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles21/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles22/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles23/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles24/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles25/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles26/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles27/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles28/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles29/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles30/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles31/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles32/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles33/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles34/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles35/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles36/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles37/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles38/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles39/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles40/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles41/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles42/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles43/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles44/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles45/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles46/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles47/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles48/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles49/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles50/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles51/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles52/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles53/; ADD /home/arwen/daiane_oracle/loading_inex2009/xml_pages/xmlfiles54/; ---------------------------------------------------------------------------------------- The command INFO returns: INFO General Information Version: 7.7.2 Used Memory: 79 MB Main Options DBPATH: /home/arwen/BaseXData DEBUG: false EVENTPORT: 1985 GLOBALLOCK: false HOST: localhost HTTPLOCAL: false KEEPALIVE: 0 LANG: English LANGKEYS: false LOG: true LOGMSGMAXLEN: 1000 NONPROXYHOSTS: PARALLEL: 8 PASSWORD: PORT: 1984 PROXYHOST: PROXYPORT: 80 REPOPATH: /home/arwen/BaseXRepo RESTXQPATH: SERVERHOST: SERVERPORT: 1984 STOPPORT: 8985 TIMEOUT: 0 USER: WEBPATH: /home/arwen/BaseXWeb Options ADDARCHIVES: true ADDCACHE: false ADDRAW: false ATTRINDEX: true AUTOFLUSH: true BINDINGS: CACHEQUERY: false CASESENS: false CATFILE: CHECKSTRINGS: true CHOP: true COMPPLAN: true CREATEFILTER: *.xml CREATEONLY: false DIACRITICS: false DOTCOMPACT: false DOTDISPLAY: true DOTPLAN: false DOTTY: dotty DTD: false EXPORTER: FORCECREATE: false FTINDEX: false FTINDEXSPLITSIZE: 0 HTMLOPT: html=false,omit-xml-declaration=false,method=xml,nons=false,nobogons=false,nodefaults=false,nocolons=false,norestart=false,ignorable=false,emptybogons=false,any=false,norootbogons=false,nocdata=false,lexical=false,encoding=utf-8 INDEXSPLITSIZE: 0 INLINELIMIT: 0 INTPARSE: true LANGUAGE: en LSERROR: 0 MAINMEM: false MAXCATS: 100 MAXHITS: -1 MAXLEN: 96 MAXSTAT: 30 PARSER: xml PARSEROPT: encoding=UTF-8,flat=false,header=false,jsonml=false,lines=true,separator=comma QUERYINFO: false QUERYPATH: RUNS: 1 SERIALIZE: true SERIALIZER: SKIPCORRUPT: false STEMMING: false STOPWORDS: STRIPNS: false TAILCALLS: 256 TEXTINDEX: true UPDINDEX: false WRITEBACK: false XMLPLAN: false XQUERY3: true ----------------------------------------------------------- How can I run XQuery in that collection? Regards, Daiane

2 1

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