BaseX-Talk December 2010

basex-talk@mailman.uni-konstanz.de

25 participants
40 discussions

BaseX Server installation.
by Huib Verweij 14 Dec '10

14 Dec '10

Hi, I would like to install BaseX on a server. So far I've installed it on my dev machine and on a test server under my account, but now we are moving to a server where BaseX will just be started by a script or something and run in a folder which is not anyones home folder. The problem I think there will be is that BaseX takes it's configuration information always from ~/.basex, which will not work in our server setup I assume. Am I correct in assuming this will cause headaches for our sysadmin or am I missing something? Will 6.5 change this situation where the config file is always read from Util.homeDir()? Ideally we would just like to pass the location of the config file to the server when it starts, I suppose. In the config file we can then specify the location of the data folder etc. Kind regards, Huib.

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BaseX 6.3.4
by Christian Grün 13 Dec '10

13 Dec '10

Hi all, Version 6.3.4 of BaseX is out: http://basex.org/download As usual, here are the changelogs: [ADD] Storage: Text Compression added, shrinking text nodes up to 50%! [MOD] XQuery/collection(): Caching of doc paths to speedup repeated lookups [MOD] XQuery/collection(): Lazy instantiation of document nodes [MOD] Storage: Limit of number of attributes per element raised to 2^31 [MOD] Commands: INFO TABLE renamed to INFO STORAGE Version 6.5 of BaseX will be released in January; stay tuned! Christian ___________________________ Christian Grün University of Konstanz Department of Computer & Information Science D-78457 Konstanz, Germany Tel: +49-7531-88-4449, Fax: +49-7531-88-3577 http://www.inf.uni-konstanz.de/~gruen

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Re: [basex-talk] Can't use REST with 6.3.3
by Mahender Didwania 13 Dec '10

13 Dec '10

Hi, Many thanks and I very much appreciate the lightening fast response. Upon reviewing the steps mentioned by you and what my maven build does, I found the only material difference (from the pt. of view of ability to invoke server from command-line) was that the class name was changed (for invoking the REST server) from org.basex.examples.jaxrx.StartJaxRx to rg.basex.api.jaxrx.JaxRxServer. I can run it successfully now. Thanks, Mahender ----- Original Message ----- From: "Christian Grün" <christian.gruen(a)gmail.com> To: "Mahender Didwania" <mahender(a)didwania.co.uk> Cc: "basex-talk" <basex-talk(a)mailman.uni-konstanz.de> Sent: Monday, December 13, 2010 3:03:49 PM GMT +00:00 GMT Britain, Ireland, Portugal Subject: Re: [basex-talk] Can't use REST with 6.3.3 Mahender, thanks for your feedback. The release of BaseX 6.5 is near, which will include all necessary files to run the JaxRx server out of the box.

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Can't use REST with 6.3.3
by Mahender Didwania 13 Dec '10

13 Dec '10

Hi, Two things: 1. Earlier I was using version 6.2.9 and the class StartJaxRx.java seemed to work fine. The need is to have the ability to invoke the server from a script. I can't find the StartJaxRx in 6.3.3 any more. Using the old class with 6.3.3, the server says it started up fine, but when I attempt to access it over HTTP/REST, I get error for /basex/jax-rx (note that /basex/ is okay): Problem accessing /basex/jax-rx/. Reason: tried to access method org.basex.server.ClientSession.execute(Ljava/lang/String;Ljava/io/OutputStream;)V from class org.basex.api.jaxrx.BXOutput Caused by: java.lang.IllegalAccessError: tried to access method org.basex.server.ClientSession.execute(Ljava/lang/String;Ljava/io/OutputStream;)V from class org.basex.api.jaxrx.BXOutput at org.basex.api.jaxrx.BXOutput.exec(BXOutput.java:62) at org.basex.api.jaxrx.BXJaxRx$1.code(BXJaxRx.java:61) at org.basex.api.jaxrx.BXCode.run(BXCode.java:56) at org.basex.api.jaxrx.BXOutput.write(BXOutput.java:51) at com.sun.jersey.core.impl.provider.entity.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:71) at com.sun.jersey.core.impl.provider.entity.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:57) at com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:299) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1326) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1239) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1229) at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:420) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:497) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:684) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) 2. For version 6.1, you provide various files, including a .zip, on your website; for 6.3.3, you only provide basex.jar and basex-api.jar. I had earlier created my own maven build to include all dependencies (including the ones from java.net repository), but as noted above, I cannot get 6.3.3 to work. Could you please provide a .zip file for every release like you have for 6.1 on your web-site (merely replacing BaseX61.jar with basex.jar and BaseX61-jaxrx.jar with basex-api.jar (for 6.3.3 versions) does not seem to help)? Thanks, Mahender.

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Ihre Software auf der Heft-DVD in c't Mac & i
by Stephan Ehrmann, c't 10 Dec '10

10 Dec '10

(Please scroll down to find the english version of this mail.) Sehr geehrter Software-Hersteller, am 26. Februar erscheint erstmals c't Mac & i, das neue Sonderheft rund um Apple. Die Redaktion legt eine Heft-DVD mit attraktiven Voll- und Spezialversionen für Mac OS X bei. Mit diesem Schreiben möchten wir Sie bitten, unseren Lesern für diese Aktion attraktive Programme zur Verfügung zu stellen, die sie anderweitig nicht bekommen und die es insbesondere nicht zum Gratis-Download im Internet gibt. Sie als Hersteller profitieren von dieser Aktion ebenfalls: Sie stellen Ihre Software einem großen Kreis interessierter Mac-Nutzer vor, können bei dieser Gelegenheit auf andere Produkte hinweisen und gegebenenfalls auch Upgrades von einer älteren auf eine aktuelle Vollversion anbieten. Hersteller, die uns in der Vergangenheit Vollversionen für c't-Heft-DVDs zur Verfügung gestellt haben, waren positiv überrascht vom Erfolg solcher Aktionen. Es kommen durchaus auch etwas ältere Vollversionen in Frage, sofern sie mit aktueller Mac-Soft- und Hardware noch funktionieren. Wenn Sie die Idee grundsätzlich für gut halten, die Verbreitung einer Vollversion aber für Sie nicht in Frage kommt, können Sie uns auch eine Spezialversion anbieten, also eine im Funktionsumfang gegenüber der Vollversion eingeschränkte Variante Ihres Programms. Bitte stellen Sie aber sicher, dass unsere Leser eine sinnvolle Auswahl an Funktionen geboten bekommen: ein CAD-Programm, das nicht speichern kann, ist aus unserer Sicht ebenso wenig brauchbar wie ein Videoschnittprogramm, das keine Filme exportiert. Bitte beachten Sie, dass wir an zeitlich limitierten Demo- oder Testversionen ebensowenig interessiert sind wie an Shareware und Open-Source-Software, weil unsere Leser solche ohnehin gratis aus dem Internet gratis herunterladen können, nicht selten in aktuelleren Versionen. Ob Sie die Programme installations- und betriebsbereit zur Verfügung stellen oder eine Registrierung auf Ihrer Website voraussetzen, auf die wir dann von unserer DVD-Bedienoberfläche aus verlinken würden, ist Ihnen überlassen. Wenn Sie eine Website zum Registrieren aufsetzen, möchten wir Sie bitten, zu versichern, dass Sie die Adressen unserer Leser nicht missbrauchen und nicht etwa an andere Unternehmen weitergeben. Außerdem müssten Sie bitte sicherstellen, dass die Registrierung mindestens sechs Monate nach Erscheinen der c't Mac & i, also bis 31. August 2011, möglich ist. Viele Leser installieren interessante Software nicht unmittelbar nach Erscheinen einer Ausgabe, sondern dann, wenn sie sie brauchen. Der Ärger ist groß, wenn sie dann nicht mehr funktioniert. Welche Software Sie uns zur Verfügung stellen wollen, was diese Software auszeichnet, wo wir sie finden, ob wir in unserer systemübergreifenden DVD-Oberfläche auf eine Registrierungswebseite verlinken sollen und wie deren URL lautet, ob es sich um eine Voll- oder eine Spezialversion handelt, was sie regulär kostet und so weiter können Sie direkt in unserer Datenbank eintragen. Über diesen Link können Sie neue Programme anlegen: <http://www.heise.de/bin/ct/cdprod.pl?id=neu&prod=sp1103> Wenn Sie uns mehrere Programme zur Verfügung stellen wollen, klicken Sie bitte nicht den Back-Button im Browser, sondern rufen die URL erneut auf, um einen neuen Datensatz zu generieren. Falls Sie allen Lesern dieselbe Seriennummer zur Verfügung stellen wollen, um die Installation zu erleichtern, tippen Sie die Seriennummer bitte genau so, wie sie später in Ihrer Software eingefügt werden soll, in das Feld "Seriennummer für die Vollversion". Bitte probieren Sie unbedingt sorgfältig aus, ob diese Seriennummer 1:1 in der Programmversion, die Sie uns zur Verfügung stellen, funktioniert. Auf der danach folgenden Seite können Sie schließlich noch jeweils einen Screenshot pro Software hochladen, der am Ende auf der HTML-Bedienoberfläche der DVD zu sehen sein wird. Nachdem Sie alle Daten eingegeben und durch Klicken des OK-Buttons gespeichert haben, erhalten Sie eine automatisch generierte E-Mail, die den Eingang Ihrer Daten bei uns bestätigt und einen Link enthält, über den Sie Ihre Daten nachträglich editieren können. Wir weisen explizit darauf hin, dass die Redaktion von allen Programmen, welche auf diesem Weg für c't Mac & i angeboten werden, die aus ihrer Sicht attraktivsten aussucht und dass Vollversionen attraktiver sind als Spezialversionen. Selbstverständlich informieren wir Sie, ob Ihre Software auf der Heft-DVD vertreten sein wird. Bitte antworten Sie auf diese Mail, falls Sie Fragen haben, sich im Unklaren sind, ob sich eines Ihrer Programme dafür eignet oder natürlich auch gern, wenn Sie Schwierigkeiten mit dem Prozedere haben sollten. Und noch eine Bitte: Wir sind Ihnen verbunden, wenn Sie die Angelegenheit vertraulich behandeln. Mit freundlichen Grüßen Stephan Ehrmann Chefredakteur Mac & i, www.mac-and-i.de, und heise Software-Verzeichnis, www.heise.de/software, Stellv. Chefredakteur c't, www.ct.de ################################################################################ Dear software producer, on February 26th we will publish the first issue of c't Mac & i, our new special about the Apple universe. Part of the magazine will be a covermount DVD loaded with attractive software (full and special editions) for Mac OS X. We would like to ask you to provide our readers with great software that is otherwise not available, especially not as a free download on the Internet. You as a software producer benefit also from this promotion: You are introducing your software to a broad audience of interested Mac users, you can use the opportunity to point out your other products and you could, where applicable, offer updates to the latest version of the software. Software makers who have provided us with software in the past were positively surprised by the success of these promotions. Older software versions can also be considered if they are compatible with the latest Mac system software and hardware. If you basically like the idea but the spread of a full version is out of the question you can also offer us a special edition of your software, i. e. with limited functionality. Please make sure that the software still offers a meaningful selection of functions: a CAD software unable to save a file is as useless as a video-editing program without the ability to export movies. Please note that we are neither interested in time-limited demo or test versions nor shareware or open-source software. These can be already downloaded from the Internet for free. It's up to you whether you provide your software ready-to-use or if you require an online registration. We would link to your registration page from our DVD user interface. We would like to ask you not to abuse the registration data of our readers and not to sell it or pass it to other companies. Please keep in mind that a registration page has to be available at least six month after the publication of the magazine, in this case August 31st, 2011. Readers might only install the software when they need it, not when the magazine is bought. You can enter the specifics of your software, where we can download a distribution archive, if we should link to a registration page, what kind of version it is, how much you normally charge, etc directly in our database. Please follow the link <http://www.heise.de/bin/ct/cdprod.pl?id=neu&prod=sp1103> to enter new programs. If you want to provide more than one program please do not use the back button of your web browser but follow the link again to create a new record in the database. Should every reader use the same serial number during the software installation please enter it in the field "Serial Number for full Version". Please test thoroughly if software and serial number match. On the following pages you can upload a screenshot that will appear on the HTML navigation pages of the DVD. After having entered all the data and saved it by clicking OK you will receive a system-generated email confirming the reception of your data and providing a link for later data changes. Please be advised that the editorial staff makes the final decision which programs will be included on the DVD. Full versions are more attractive than special versions. You will, of course, be informed if your software will be included. Please respond to this email if you have any questions or are uncertain whether one of your software products is suitable or whether you have problems with our procedures. One final request: We would be very grateful if you would keep this matter confidential, thank you. Best regards, Stephan Ehrmann Editor-in-chief Mac & i, www.mac-and-i.de, und heise software directory, www.heise.de/software, Executive Editor c't, www.ct.de -- c't magazin für computertechnik Helstorfer Straße 7, 30625 Hannover, Germany www.ctmagazin.de, www.heise.de/software Fon: +49 (0) 5 11/53 52-300, Fax: -417 Heise Zeitschriften Verlag GmbH & Co. KG Registergericht: Amtsgericht Hannover, HRA 26709 Persönlich haftende Gesellschafterin: Heise Zeitschriften Verlag Geschäftsführung GmbH Registergericht: Amtsgericht Hannover, HRB 60405 Geschäftsführer: Ansgar Heise, Steven P. Steinkraus, Dr. Alfons Schräder

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Re: [basex-talk] BaseXException
by Mark Boon 09 Dec '10

09 Dec '10

OK, now it prints something like this: declare function local:get ( $arg as xs:string ) as xs:string { let $result := collection()/BOT-L/memory/variable[@name=$arg]/@value return ( if ($result then $result/string() else fn:concat('"',fn:concat($arg,' not found"')) ) ^ ^ ^ [XPST0003] Expecting ")", found "t". }; declare updating function local:set ( $name as xs:string, $value as xs:string ) { if (collection()/BOT-L/memory/variable[@name=$name]) then replace value of node collection()/BOT-L/memory/variable[@name=$name]/@value with $value else insert node element variable { attribute name {$name} , attribute value {$value} } into collection()/BOT-L/memory }; let $botName := xs:string(local:get("_botName_")) let $lastEventTime := xs:dateTime((collection()/BOT-L/event[@from=$botName]/@dateTime)[1]) let $now := fn:current-dateTime() let $duration := $now - $lastEventTime return ($duration > xs:dayTimeDuration('PT60S')) org.basex.core.BaseXException: Stopped at line 4, column 34: [XPST0003] Expecting ")", found "t". at org.basex.core.Command.execute(Command.java:66) at org.basex.core.Command.execute(Command.java:78) at com.avatar_reality.ai.XQuery.execute(XQuery.java:21) at com.avatar_reality.ai.BotCommandProcessor.executeCommands(BotCommandProcessor.java:432) at com.avatar_reality.ai.BotCommandProcessor.processEventTriggers(BotCommandProcessor.java:370) at com.avatar_reality.ai.BotCommandProcessor.processEvent(BotCommandProcessor.java:339) at com.avatar_reality.ai.BotCommandProcessor.processEvent(BotCommandProcessor.java:310) at com.avatar_reality.ai.BotCommandProcessor.receiveTimerEvent(BotCommandProcessor.java:553) at com.avatar_reality.blue_mars.iam.framework.behavior.BotLBehavior.update(BotLBehavior.java:67) at com.avatar_reality.blue_mars.iam.framework.IamBot.update(IamBot.java:391) at com.avatar_reality.blue_mars.iam.framework.BotProxy.update(BotProxy.java:129) at com.avatar_reality.blue_mars.tkclient.TKClientAdapter$BotUpdater.run(TKClientAdapter.java:1283) at java.lang.Thread.run(Thread.java:680) MUCH better. :) Mark

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BaseX got an Editors' Choice award !
by Peter Luky - DownloadAtlas.com 09 Dec '10

09 Dec '10

Hello DBIS Group, University of Konstanz, we would like to remind you and announce an Editor's Choice award to BaseX Current method of awarding is chosen by us to reflect the high quality of your software product. More informations at http://www.downloadatlas.com/freeware-52cba7a6.html#awards Important Note: If you have any questions, please don't hesitate to contact us. Best wishes, Peter Luky - editor e-mail: luky(a)downloadatlas.com ----------------------------------------------------------------------------------------------------------------------- This message and any attached files are confidential and intended solely for the addressee(s). Any publication, transmission or other use of the information by a person or entity other than the intended addressee is prohibited. If you receive this in error please contact the sender and delete the material. The sender does not accept liability for any errors or omissions as a result of the transmission. To unsubscribe or change options please login to your account using email address http://user.downloadatlas.com/?account=basex-talk@mailman.uni-konstanz.de

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What abot publishing Python API to PyPi
by Jan Vlčinský (CAD) 09 Dec '10

09 Dec '10

Hi I am using Python API heavily and now run into situation, when I need the library easily usable from more projects. Natural choice would be to make it a module or a package and publish it to PyPi, because then it can be installed quickly. I am willing to spend some hours on this to make it more available. But I will need some assistance from original authors as it is good practice to fill in licence, author, url etc. With whom can I discuss that? Jan PS: I am neither Python nor PyPi guru, I just feel, I can manage to do this task within few weeks. -- *Ing. Jan Vlčinský* CAD programy Slunečnicová 338/3, 734 01 Karviná Ráj, Czech Republic tel: +420-597 602 024; mob: +420-608 979 040 skype: janvlcinsky; GoogleTalk: jan.vlcinsky(a)gmail.com http://cz.linkedin.com/in/vlcinsky

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Re: [basex-talk] BaseXException
by Mark Boon 09 Dec '10

09 Dec '10

Rats, I just found out that the XQuery class is defined as final. :-(( On Thu, Dec 9, 2010 at 8:40 AM, Mark Boon <mboon(a)avatar-reality.com> wrote: > Well, as I said, it was just an off-the-wall idea. And I appreciate > the focus on performance, it's paramount. > > Having said that, the XQuery class is the one that has the query and > generates the exception and is thereby in the unique position to > easily perform certain services, like providing a nicely formatted > error to the exception. Any other solution is going to be a workaround > at best. The best I can think of right now is to sub-class XQuery and > catch the BaseXException and wrap it in a new exception in the > execute() method and add a printErrorDetail() method that does the > formatting as I explained. I see little drawback in terms of either > performance or security, as you'll still be free to use the base-class > in any case. > > So that's what I'll do. Maybe I'm the only one who sees the value of > it, I thought there would be more developers who'd benefit of such an > implementation. > > Mark > > > On Thu, Dec 9, 2010 at 1:08 AM, Christian Grün > <christian.gruen(a)gmail.com> wrote: >>> org.basex.core.BaseXException: Stopped at line 42, column 55: >>> [XPST0003] Expecting ")", found """. >>> >>> However, it doesn't show me the query. Since I generate (sometimes >>> large) queries automatically, this message by itself is not always >>> very helpful (to put it very mildly). >> >> In your case, I'd recommend to wrap query execution with try/catch and >> lookup the relevant snippet by yourself; this is similar to what Jan >> has already proposed. If this should not be possible for reason, feel >> free to comment back on this. >> >> Based on my experiences, a more detailed error feedback would >> represent undesirable overhead. >> >> Christian >> >

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Re: [basex-talk] BaseXException
by Mark Boon 09 Dec '10

09 Dec '10

Well, as I said, it was just an off-the-wall idea. And I appreciate the focus on performance, it's paramount. Having said that, the XQuery class is the one that has the query and generates the exception and is thereby in the unique position to easily perform certain services, like providing a nicely formatted error to the exception. Any other solution is going to be a workaround at best. The best I can think of right now is to sub-class XQuery and catch the BaseXException and wrap it in a new exception in the execute() method and add a printErrorDetail() method that does the formatting as I explained. I see little drawback in terms of either performance or security, as you'll still be free to use the base-class in any case. So that's what I'll do. Maybe I'm the only one who sees the value of it, I thought there would be more developers who'd benefit of such an implementation. Mark On Thu, Dec 9, 2010 at 1:08 AM, Christian Grün <christian.gruen(a)gmail.com> wrote: >> org.basex.core.BaseXException: Stopped at line 42, column 55: >> [XPST0003] Expecting ")", found """. >> >> However, it doesn't show me the query. Since I generate (sometimes >> large) queries automatically, this message by itself is not always >> very helpful (to put it very mildly). > > In your case, I'd recommend to wrap query execution with try/catch and > lookup the relevant snippet by yourself; this is similar to what Jan > has already proposed. If this should not be possible for reason, feel > free to comment back on this. > > Based on my experiences, a more detailed error feedback would > represent undesirable overhead. > > Christian >

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BaseX-Talk December 2010