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

7.7.x UI freeze
by Pascal Heus 23 Dec '13

23 Dec '13

Recently upgraded to 7.7.2 from 7.6 and getting UI freeze on MacOSX when I try to open existing databases. When opening from the interactie command prompt, I get a message that the format has changed and I need to rebuild indexes. No problem if I create a new database. Anyone else experiencing similar issue? What should I do to bring existing DB to a compatible state? thanks *P

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Re: [basex-talk] initial installation observation
by e-letter 20 Dec '13

20 Dec '13

On 19/12/2013, basex-talk-request(a)mailman.uni-konstanz.de <basex-talk-request(a)mailman.uni-konstanz.de> wrote: > Today's Topics: > > 4. Re: initial installation observation (Christian Gr?n) > ------------------------------ > > Message: 4 > Date: Thu, 19 Dec 2013 12:29:06 +0100 > Subject: Re: [basex-talk] initial installation observation > >>> You can optionally check out the following Wiki article to see what >>> other startup options may be helpful: >>> >>> http://docs.basex.org/wiki/Start_Scripts Starting the command terminal fails: $ basex BaseX 7.7.2 [Standalone] Try help to get more information. > OPEN xmldatabasefile.xml Stopped at ., 1/21: Syntax: OPEN [name] ([path]) Open database. Opens the database [name], filtered by [path]. > OPEN xmldatabasefile.xml /path/to/file Stopped at ., 1/21: Syntax: OPEN [name] ([path]) Open database. Opens the database [name], filtered by [path]. > OPEN xmldatabasefile.xml, /path/to/file Stopped at ., 1/21: Syntax: OPEN [name] ([path]) Open database. Opens the database [name], filtered by [path]. How to open the database file, please? -- basex772

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bug? lock. is there some guild on how to do concurrent update in rexq service?
by easy 19 Dec '13

19 Dec '13

hi,all, This is the errror message: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 7.7.2 Java: Sun Microsystems Inc., 1.6.0_24 OS: Linux, amd64 Stack Trace: java.lang.IllegalMonitorStateException: Thread already holds one or more locks. at org.basex.core.DBLocking.acquire(DBLocking.java:106) at org.basex.core.Context.register(Context.java:239) at org.basex.http.restxq.RestXqResponse.create(RestXqResponse.java:69) at org.basex.http.restxq.RestXqModule.process(RestXqModule.java:108) at org.basex.http.restxq.RestXqFunction.process(RestXqFunction.java:100) at org.basex.http.restxq.RestXqServlet.run(RestXqServlet.java:31) at org.basex.http.BaseXServlet.service(BaseXServlet.java:58) at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684 ) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java :457) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.j ava:137) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.jav a:557) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandl er.java:231) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandl er.java:1075) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java: 384) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandle r.java:193) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandle r.java:1009) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.j ava:135) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper .java:116) at org.eclipse.jetty.server.Server.handle(Server.java:370) at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(Abstrac tHttpConnection.java:489) at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpC onnection.java:960) at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.conten t(AbstractHttpConnection.java:1021) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnecti on.java:82) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEn dPoint.java:668) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEnd Point.java:52) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPoo l.java:608) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool .java:543) at java.lang.Thread.run(Thread.java:679) Improper use? Potential bug? Your feedback is welcome: -- 此致 easy 莫愁前路无知己，天下谁人不识君。

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Successive update queries for restxq
by Tojo Rakotoarison 19 Dec '13

19 Dec '13

Hi, I would like to make successive updates on a database using RESTXQ. For example : db:create(...) then db:add(...) on the newly created database. But, it seems impossible to do it in the same query because of the order in which the functions are processed. Is there a workaround for that without asking the user to send two requests manually ? For example, if there could be a way to redirect to a new query or Restxq, or something like that. Thanks ! Best regards,

2 1

standalone or client/server for test scenario
by e-letter 19 Dec '13

19 Dec '13

Readers, For the scenario described elsewhere (http://www.mail-archive.com/talk@x-query.com/msg00786.html), which is correct to use please, standalone or clien/server modes, for initial testing? Is this choice important, or can be ignored?

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initial installation observation
by e-letter 19 Dec '13

19 Dec '13

Readers, Basex772 jar file was installed into a directory /usr/local/basex A symbolic link was created: cat >> /usr/local/bin/basex java -jar /usr/local/basex/basex772.jar In normal user home directory, basex started from command terminal, but the command line options are not active, e.g. 'basex -h' does not show the help file in the command terminal, but starts basex standalone. Also command terminal 'basex -i /path/to/existing/xmlfile.xml' does not open the xml file, but starts basex.

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Issues inserting nodes with @xml:lang
by France Baril 18 Dec '13

18 Dec '13

Hi, I am trying to figure out how to allow the use of @xml:lang in an .xqm. I've been using it before without the need to add any declaration, but in this case I am getting an error: Unexpected error: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 7.7.2 Java: Apple Inc., 1.6.0_65 OS: Mac OS X, i386 Stack Trace: ... I am able to reproduce the error and get rid of it simply by adding or removing @xml:lang attributes in my content. I have attached a simple example, you'll need a db named tests to receive the result. - If you run the .xqm as is, you should get the unexpected error. - If you remove all @xml:lang="en-us" in the function test-nodes:get-trans-units-1(), the result node will be saved in the tests db. What am I missing? -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com (514) 572-0341

2 2

Array Size Exceptions
by Jeremy Moseley 17 Dec '13

17 Dec '13

Hi Guys, Running into some strange exceptions when trying to make changes to data in the database. The function is updating all attributes in a project to include lower case copies. When doing this on specific projects, it consistently fails with the stack trace below. Any thoughts? Cheers, Jeremy XQuery: (: Get all documents pertaining to this project :) let $docs := project:get-docs($shortname, $revision, $environment) > return ( > for $node in $docs/s9:toc//*[(@designation != "" and > not(@designation-lower)) > or (@enumeration != "" and > not(@enumeration-lower))] > return ( > prof:void(trace(base-uri($node), "Node Document: ")), > insert node (attribute { 'designation-lower' } { > lower-case($node/@designation) }) into $node, > insert node (attribute { 'enumeration-lower' } { > lower-case($node/@enumeration) }) into $node > ), > for $node in $docs/*[(@designation != "" and not(@designation-lower)) > or (@enumeration != "" and > not(@enumeration-lower))] > return ( > prof:void(trace(base-uri($node), "Node Document: ")), > insert node (attribute { 'designation-lower' } { > lower-case($node/@designation) }) into $node, > insert node (attribute { 'enumeration-lower' } { > lower-case($node/@enumeration) }) into $node > ), > for $node in $docs//*[(@title != "" and not(@title-lower))] > return ( > prof:void(trace(base-uri($node), "Node Document: ")), > insert node (attribute { 'title-lower' } { > lower-case($node/@title) }) into $node > ), > insert node (attribute {'optimized'} { "yes" }) into $collection, > prof:void(metrics:timing("optimize-attributes", "get", "200", > string(prof:current-ms() - $start))) > ) Stack Trace: > HTTP/1.1 500 Unexpected error: Improper use? Potential bug? Your feedback > is welcome: > Contact: basex-talk(a)mailman.uni-konstanz.de > Version: BaseX 7.7.2 > Java: Apple Inc., 1.6.0_65 > OS: Mac OS X, x86_64 > Stack Trace: > java.lang.NegativeArraySizeException > at org.basex.io.random.DataAccess.readBytes(DataAccess.java:200) > at org.basex.io.random.DataAccess.readToken(DataAccess.java:178) > at org.basex.io.random.DataAccess.readToken(DataAccess.java:169) > at org.basex.data.DiskData.txt(DiskData.java:267) > at org.basex.data.DiskData.text(DiskData.java:235) > at org.basex.index.value.DiskValues.readKeyAt(DiskValues.java:285) > at org.basex.index.value.DiskValues.get(DiskValues.java:441) > at > org.basex.index.value.UpdatableDiskValues.index(UpdatableDiskValues.java:66) > at org.basex.data.DiskData.indexEnd(DiskData.java:356) > at org.basex.data.Data.insert(Data.java:817) > at org.basex.data.Data.insertAttr(Data.java:672) > at org.basex.data.atomic.InsertAttr.apply(InsertAttr.java:31) > at > org.basex.data.atomic.AtomicUpdateList.applyStructuralUpdates(AtomicUpdateList.java:300) > at > org.basex.data.atomic.AtomicUpdateList.execute(AtomicUpdateList.java:288) > at org.basex.query.up.DatabaseUpdates.apply(DatabaseUpdates.java:184) > at org.basex.query.up.ContextModifier.apply(ContextModifier.java:103) > at org.basex.query.up.Updates.apply(Updates.java:120) > at org.basex.query.QueryContext.update(QueryContext.java:313) > at org.basex.query.QueryContext.value(QueryContext.java:297) > at org.basex.query.QueryContext.iter(QueryContext.java:282) > at org.basex.http.restxq.RestXqResponse.create(RestXqResponse.java:73) > at org.basex.http.restxq.RestXqModule.process(RestXqModule.java:108) > at org.basex.http.restxq.RestXqFunction.process(RestXqFunction.java:100) > at org.basex.http.restxq.RestXqServlet.run(RestXqServlet.java:31) > at org.basex.http.BaseXServlet.service(BaseXServlet.java:58) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) > at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) > at > org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575) > at > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) > at > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384) > at > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) > at > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) > at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:276) > at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:103) > at org.basex.http.restxq.RestXqResponse.create(RestXqResponse.java:118) > at org.basex.http.restxq.RestXqModule.process(RestXqModule.java:108) > at org.basex.http.restxq.RestXqFunction.process(RestXqFunction.java:100) > at org.basex.http.restxq.RestXqServlet.run(RestXqServlet.java:31) > at org.basex.http.BaseXServlet.service(BaseXServlet.java:58) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) > at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) > at > org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:575) > at > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) > at > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384) > at > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) > at > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) > at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:276) > at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:103) > at org.basex.http.restxq.RestXqResponse.create(RestXqResponse.java:118) > at org.basex.http.restxq.RestXqModule.process(RestXqModule.java:108) > at org.basex.http.restxq.RestXqFunction.process(RestXqFunction.java:100) > at org.basex.http.restxq.RestXqServlet.run(RestXqServlet.java:31) > at org.basex.http.BaseXServlet.service(BaseXServlet.java:58) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) > at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:457) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) > at > org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557) > at > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) > at > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384) > at > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) > at > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) > at > org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) > at org.eclipse.jetty.server.Server.handle(Server.java:370) > at > org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489) > at > org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949) > at > org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011) > at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644) > at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) > at > org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) > at > org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668) > at > org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) > at > org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) > at > org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) > at java.lang.Thread.run(Thread.java:695)

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Performance questions
by José Tomás Atria 17 Dec '13

17 Dec '13

Dear all, I have a possibly dumb/trivial question with regards to resource utilization with BaseX. It's basically two things: 1) I'm working with a database that is smaller than the available memory in my main research machine. I noticed the MAINMEM option, but for some reason I couldn't get it to work, and then noticed that it would only affect newly created db's. Is it possible to tell BaseX to create a db in disk, and then load it into memory in full? would this increase performance? Would something like SET MAINMEM = true COPY DB 'diskDB' 'memDB' achieve something along these lines? 2) The machine I'm working on has a quad core processor. Is there anyway to process queries in parallel to take advantage of this? I made some superficial attempts through splitting queries and running them simultaneously, but it seems that the server is still confined to one cpu. I understand that adding multithreading support could be unnecesary and out of the scope of the project, but I thought of asking since I was already coming here to ask about memory. Thanks for any tips! jta. -- entia non sunt multiplicanda praeter necessitatem

2 2

restxq: default namespace and variable in path annotation don't like each other
by Jean-philippe Magué 17 Dec '13

17 Dec '13

Hello, We think we've found something that looks like a bug. In the minimal file test_A.xqm, we declare a default namespace and a function with a very simple path annotation (without variable). It works just fine. In test_B.xqm, we just declare a function with a variable in its path annotation. This is OK as well. In test_C.xqm, we declare both a default namespace and a path annotation with a variable. This raises a NullPointerException as you can see in error.html (which also provide version number informations). The choice between variables in path annotation and default element namespace is a difficult one! We'd like to use them both! Or are we missing something ? Best, Jean-Philippe -- Jean-Philippe Magué Maître de Conférences en Humanités Numériques Responsable de l'Atelier des Humanités Numériques : ahn.ens-lyon.fr Ecole Normale Supérieure de Lyon +33 (0)4 26 23 38 08 -- "Using computers will therefore lead us to a more profound and systematic knowledge of human expression; in principle, it can help us to be more humanistic than before." Busa, 1980.

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Serializing unescaped xml to string
by Joe Templeman 16 Dec '13

16 Dec '13

Hi all, Is there a way to output unescaped XML to a string for debugging purposes? In unittests we would like to output the XML returned when a test fails, here is my example: declare %unit:test function elementinfo-test:test-element-info() { let $cases := <cases> <case> <comment>Failed input</comment> <input>input</input> <output> <result> output </result> </output> </case> </cases> for $case in $cases/case let $result := {some function which returns XML} let $u := unit:assert(deep-equal($case/output, result), $case/comment/text() || " Input: " || $case/input/text() || " Expected: " || fn:serialize($case/output) || " Got: " || fn:serialize($result)) return $u }; But when a test fails, I get escaped XML as the output. Is there any way to get this as actual XML? Thanks, Joe

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how to release the database lock?
by easy 16 Dec '13

16 Dec '13

Hi.,sir, I have done some delete op when there are some update write op in basex. now, the db report error, can't open the db, say still another process has open the db. but I have down the db. so , how to restore the db? the data lost? Is there some way to restore the db in basex? Eagerly. Thanks -- 此致 easy 莫愁前路无知己，天下谁人不识君。

1 0

Getting started
by Ihe Onwuka 14 Dec '13

14 Dec '13

Finally took a look - very impressive. I got some warnings on the command line, one about tagsoup which I have fixed, another that bamboozled me because I have a java runtime installed......any here is what I get..... I've looked for a search for the mailing list but it seems to be well concealed - so what should I do. [warning] /usr/bin/basex: No java runtime was found [warning] /usr/bin/basex: Unable to locate /usr/share/java/tagsoup.jar in /usr/share/java [warning] /usr/bin/basex: No JAVA_CMD set for run_java, falling back to JAVA_CMD = java

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Upcoming: XMLPrague 2014!
by Christian Grün 14 Dec '13

14 Dec '13

Dear all, The XMLPrague Conference is the most important event for XML experts, developers and users in Europe. Next year, it will take place from Feb 14-16 (Fri-Sun): http://www.xmlprague.cz/ Don’t miss the event (which is, by the way, very affordable)! Just like last year, we will be offering a BaseX User Meeting on Friday. We are currently compiling the agenda. As many of you are using BaseX in exciting projects, it would be great to have some of you talk about your experiences. Would you be interested? Just ask for more details. We are looking forward to seeing many of you in Prague, Christian

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strange behaviour of the BaseXgui-editor
by Rob Stapper 14 Dec '13

14 Dec '13

Hi, I encountered a few (3) problems with the BasexGui-editor. I use the 7.8 beta release but the issue's also occur in previous versions. Problem 1: this is a minor problem but maybe related to problem 2 which is ( for me) a major problem: If I open two ( small) packages of which one has no errors and one has errors then the errorstatus-message at the bottom of the editor doesn't synchronize correctly when switching files. If I switch from the incorrect packagefile to the correct packagefile the errormessage doesn't refresh to 'ok' until I edit this file. Even after closing an activated incorrect packagefile the errormessage stays active. Clicking on the message even reopens the incorrect packagefile. Switching the focus from the correct packagefile to the incorrect packagefile however, doesn't show this behavior. In that case the errorstatus-message changes to the appropriate errormessage of the incorrect file. Problem 2: which is a major problem when working with big files ( 80 kB) I found that when editing a large(r) packagefile the Basexgui-editor doesn't recognize errors that occur after a certain point in the file. If errors occur after this point the errorstatus-message shows 'ok' but I know that the file contains errors and if I try to install the file as a package I get an window with the message below. If the error occurs before that certain point then I get an correct errormessage. However if I delete the code which contains the error the error-message remains. Clicking on the message brings the cursor to the point where the deleted code with the error used to be, even after saving and closing the file. Errormessage ============================================================================ ============================================== Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 7.8 beta Java: Oracle Corporation, 1.7.0_45 OS: Windows Vista, x86 Stack Trace: java.lang.NullPointerException at org.basex.query.func.StaticFuncs.check(StaticFuncs.java:121) at org.basex.query.QueryParser.finish(QueryParser.java:312) at org.basex.query.QueryParser.parseLibrary(QueryParser.java:253) at org.basex.query.QueryContext.parseLibrary(QueryContext.java:197) at org.basex.query.util.pkg.RepoManager.installXQ(RepoManager.java:230) at org.basex.query.util.pkg.RepoManager.install(RepoManager.java:70) at org.basex.core.cmd.RepoInstall.run(RepoInstall.java:37) at org.basex.core.Command.run(Command.java:344) at org.basex.core.Command.exec(Command.java:320) at org.basex.core.Command.execute(Command.java:77) at org.basex.core.Command.execute(Command.java:89) at org.basex.gui.dialog.DialogProgress$1.run(DialogProgress.java:178) ============================================================================ ============================================== Being a responsible Basex-user I does what it says and give you some feedback J Problem 3: This is an old issue that I addressed e few months ago but which you could not reproduce. I found a new clue which might help you solving this issue. The issue was when working in fullscreen mode (F11) in the BasexGUI and then saving a file with 'save as .' The save-messagebox gets the focus but disappears behind fullscreen basexgui-window. This has something to do with using a dual monitorsystem. On a single monitor system it works ok: The save-box is placed on top of the fullscreen Basexgui-window and gets the focus. On a dualmonitorsystem the save-box is placed behind the fullscreen Basexgui-window and gets the focus. I hope this insight helps you tackle this minor issue. Well, that's all folk. I hope you can solve the editor-problem soon because I have a really hard time debugging my (large(r)) programs. Regards, Rob Stapper

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Xquery for multiple files
by Mansour Al Akeel 13 Dec '13

13 Dec '13

Hello all, I am not sure if this can be done in XQuery, and if BaseX makes it possible, but I am trying to query all the files under a directory. This directory is copied through webdav. For example, I need to get all the files that have root <article>. Searching for how to do this, I came across this post, that shows how to do something similar with marklogic http://stackoverflow.com/questions/19243253/search-and-load-all-xml-files-i… How to do this in BaseX if possible ?? Thank you.

2 2

Is there a better way to do develop or test with c/s mode server?
by easy 13 Dec '13

13 Dec '13

Hi, all I found the Gui can only work with local mode, but I want do some xquery test / sandbox with basex server, only found can do in client mode, Is there some other way ?esp for restful web mode. thanks -- 此致 easy 莫愁前路无知己，天下谁人不识君。

3 2

fn:doc("c:/...")
by Hans-Juergen Rennau 13 Dec '13

13 Dec '13

Dear BaseX team, I'm a little confused by the behavior of the fn:doc function: doc('/c:/projects/foo.xml') yields this error msg: [FODC0002] Line 1: No text allowed before root element. Whereas these work: doc('c:/projects/foo.xml') doc('file://c:/projects/foo.xml') Is this a bug or a feature? At any rate the error msg is confusing. I've used the latest snapshot (20131211.173706). Kind regards, Hans-Juergen

2 1

basex retrieve command
by Kamineni, Rajeshwar 13 Dec '13

13 Dec '13

Hi I have a document added using the ADD command. How do I just view it without an XQUERY. I thought RETRIEVE command should work but doesn’t help. Are there any other ways?? Thanks Raj Kamineni [T] +1 571 434 5463 [M] +1 703 342 9358

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Re: [basex-talk] Local variables holding retrieved data from BaseX
by Christian Grün 12 Dec '13

12 Dec '13

Hi Teena (cc @basex-talk), first of all, thanks for giving us details on your data and queries. To complete this: do you have a complete version of your query that shows us what are the values of $context, $project and $scopeName? As an example, I’m wondering what are the ancestor nodes of the <scopes> elements. > declare function foo:get-node-v1($context as element()?, $project as > element()?, $scopeName as xs:string) as element()? { > if (exists($project) = true()) then ( > $project/scopes/scope[@name=$scopeName]/item > ) > else () > }; The following query is equivalent, by the way (this is the beauty of XPath): declare function foo:get-node-v1($context as element()?, $project as element()?, $scopeName as xs:string) as element()? { { $project/scopes/scope[@name=$scopeName]/item }; If all your data is stored in the same database, it may be faster to open the database within the function. One more optimization could be to directly access the text index: declare function foo:get-node-v1($context as element()?, $project as element()?, $scopeName as xs:string) as element()? { { db:attribute("name-of-your-db", $scopeName, "name")/parent::scope }; You could also check out the latest stable snapshot of BaseX 7.8 [1], which inlines functions and may thus do this automatically. > When we call the first function in another > function and use it for further computation, it is always slower by 40 > seconds (when compared to second variation of the function). > What could be causing this? Difficult to say; we probably need to see your complete function call. > Are we still referencing to baseX document when > we do following instead of getting a local copy? > let $items := foo:get-node-v1($context, $project, $scopeName) Yes, the returned nodes still reference nodes in the database. Hope this helps, Christian [1] http://files.basex.org/releases/latest/

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Throughput Issues
by Jeremy Moseley 12 Dec '13

12 Dec '13

Hi Guys, I am attempting to diagnose some throughput issues we are having with BaseX, and I was hoping to get some input on a couple of thread blocking issues I am noticing. Please see the Gist ( https://gist.github.com/jerezzprime/7901172) containing the thread dumps for reference. These thread dumps were generated while BaseX was handling a large number of requests produced using Apache Benchmark. All requests were being made against the same URL and the thread dumps were gathered over a 30 second period. The most common place for threads to be blocking is at org.basex.io.random.TableDiskAccess.read*. The threads are waiting for other threads to finish, since these method calls are synchronized. Is it possible to concurrently read from disk? Another place threads appear to be blocking is while waiting for the lock to call org.basex.http.RestXqModules.cache (another synchronized method). It seems like this should only be called once to parse the modules, and then all requests afterwards should be retrieved from the cache, but from the thread dumps it appears threads are still re-parsing the xquery modules. Is this expected behavior? Thanks, Jeremy

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Fwd: Client Side transactions
by Charles Foster 12 Dec '13

12 Dec '13

For the purposes of the list. Begin forwarded message: > From: Charles Foster > Subject: Re: Client Side transactions > Date: 12 December 2013 20:47:36 GMT > To: rajeshwar.kamineni(a)neustar.biz > > Hi Raj, > > BaseX doesn't support client side transactions, but does support ACID transactions within the context of 1 query, i.e. all updates / inserts / deletes within the context of one query will either succeed or fail [1]. > > To update a document in place, you can always use XQuery Update Facility [2], or you could overwrite the document by re-inserting it with BaseX XQJ. > > In BaseX XQJ 1.2.x, performing an insert with a URI which already exists in the Database will create duplicate fragments (not good), so you would have to delete the previous document first prior to inserting. As of BaseX XQJ 1.3.x which is scheduled to be released soon, you won't need to worry about any of that. > > Just to help you along, the source code for the XQJ2 interfaces can be found here: > > https://github.com/cfoster/xqj2/ > > Which includes the insertItem [3] method. > > Kind Regards, > > Charles > > [1] http://docs.basex.org/wiki/Transaction_Management > [2] http://docs.basex.org/wiki/XQuery_Update > [3] https://github.com/cfoster/xqj2/blob/master/src/main/java/com/xqj2/XQConnec… > > > > On 12 Dec 2013, at 20:10, rajeshwar.kamineni(a)neustar.biz wrote: > >> Raj Kamineni: >> >> Hi >> >> When using setAutoCommit(false) on a connection, >> I got Client Side transactions are not supported. >> >> Any suggestions on alternative ways? >> >> Also, I am looking for a way to update the entire document in basex using XQJ >> >> xqc = baseXRepository.getConnection(); >> XQItem item = xqc.createItemFromDocument(policyDoc,null,null); >> xqc.insertItem(policy.getPolicyId(),item, null); >> >> How do I go about updating when I inserted a document using the above code. >> >> Thanks >> Raj >> >

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ConnectionPoolXQDataSource
by Charles Foster 12 Dec '13

12 Dec '13

For the purposes of the list. Begin forwarded message: > From: Charles Foster > Subject: Re: ConnectionPoolXQDataSource > Date: 12 December 2013 20:41:44 GMT > To: rajeshwar.kamineni(a)neustar.biz > > Hi Raj, > > There is the class: > > net.xqj.basex.BaseXConnectionPoolXQDataSource > > Which is an implementation of ConnectionPoolXQDataSource [1]. > > However, as far as I'm aware. No Connection Pool Manager yet exists for XQJ. So you would have to write your own. If you were to write your own, then using instances of ConnectionPoolXQDataSource is definitely the way to go. > > I plan to write an XQJ Connection Pool Manager at some point in the future, but it won't be free. If you know of someone who is willing to pay the development of an XQJ Connection Pooler Mechanism, then I'm up for making this a priority of other pieces of work I've got on. > > BaseX supports ACID transactions within the context of a single running XQuery, but doesn't support client transactions. > > Both Sedna and MarkLogic do support client transactions though. > > To find out if an XQJ implementation supports client side transactions, amongst other things, you can inspect at its XQMetaData [2], specifically the "boolean isTransactionSupported()" method. > > Kind Regards, > > Charles > > [1] http://xqj.net/javadoc/javax/xml/xquery/ConnectionPoolXQDataSource.html > [2] http://xqj.net/javadoc/javax/xml/xquery/XQMetaData.html > > On 12 Dec 2013, at 17:29, rajeshwar.kamineni(a)neustar.biz wrote: > >> Raj Kamineni: >> >> Just wondering if there is an implementation of this ConnectionPoolXQDataSource for baseX. >> >> I have background in the JDBC SQL so I am thinking in terms of connection pool to database. >> >> Also, I got an error: Client side transaction are not supported. Is it the baseX that doesn't support it or is it the xqj driver that is unable to handle it now.. >> >> thanks >> Raj >> Sr. Architect >> Neustar. >> >

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basex errors
by Kamineni, Rajeshwar 12 Dec '13

12 Dec '13

I am running basexhttp in service mode. At the same time I was using base client to add/delete some documents. I got this error suddenly. >add /root/policy_testdata/policy_template_6.xml 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_40 OS: Linux, amd64 Stack Trace: java.lang.ArrayIndexOutOfBoundsException: 3 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.ClientListener.run(ClientListener.java:145) Then I got this when I exited the basexclient >open neuhub_pdp_store 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_40 OS: Linux, amd64 Stack Trace: java.nio.channels.OverlappingFileLockException at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255) at sun.nio.ch.SharedFileLockTable.add(FileLockTable.java:152) at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:1056) at org.basex.io.random.TableDiskAccess.lck(TableDiskAccess.java:183) at org.basex.io.random.TableDiskAccess.sharedLock(TableDiskAccess.java:170) at org.basex.io.random.TableDiskAccess.<init>(TableDiskAccess.java:83) at org.basex.data.DiskData.init(DiskData.java:122) at org.basex.data.DiskData.<init>(DiskData.java:92) at org.basex.core.cmd.Open.open(Open.java:68) at org.basex.core.cmd.Open.run(Open.java:35) 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.ClientListener.run(ClientListener.java:145) Then I stopped the server OPTIMIZE 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_40 OS: Linux, amd64 Stack Trace: java.lang.RuntimeException: Data Access out of bounds: - pre value: 0 - #used blocks: 0 - #total locks: 0 - access: -1 (0 > -1] at org.basex.util.Util.notexpected(Util.java:53) at org.basex.io.random.TableDiskAccess.cursor(TableDiskAccess.java:488) at org.basex.io.random.TableDiskAccess.read1(TableDiskAccess.java:189) at org.basex.data.Data.kind(Data.java:282) at org.basex.index.resource.Docs.docs(Docs.java:87) at org.basex.index.resource.Docs.init(Docs.java:75) at org.basex.index.resource.Resources.init(Resources.java:64) at org.basex.core.cmd.Optimize.optimize(Optimize.java:80) at org.basex.core.cmd.Optimize.run(Optimize.java:42) 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.ClientListener.run(ClientListener.java:145) > INSPECT 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_40 OS: Linux, amd64 Stack Trace: java.lang.RuntimeException: Data Access out of bounds: - pre value: 0 - #used blocks: 0 - #total locks: 0 - access: -1 (0 > -1] at org.basex.util.Util.notexpected(Util.java:53) at org.basex.io.random.TableDiskAccess.cursor(TableDiskAccess.java:488) at org.basex.io.random.TableDiskAccess.read1(TableDiskAccess.java:189) at org.basex.data.Data.kind(Data.java:282) at org.basex.core.cmd.Inspect.inspect(Inspect.java:50) at org.basex.core.cmd.Inspect.run(Inspect.java:27) 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.ClientListener.run(ClientListener.java:145) Thanks Raj Kamineni [T] +1 571 434 5463 [M] +1 703 342 9358

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Re: [basex-talk] XPath child::node() axis sequence order
by Christian Grün 12 Dec '13

12 Dec '13

Hi Wendell (cc @basex-talk), thanks for your mail. Yes, there are cases in which the result of an axis step are not returned in document order. One such example is shown as follows: Document Order: <A> <B><c/></B> <c/> </A>//c / parent::node() No document order (when using the map operator): <A> <B><c/></B> <c/> </A>//c ! parent::node() I was using parent::node() instead of child::node() here, but the example can surely be adapted to also include a child step. Hope this helps? Christian ___________________________ On Tue, Dec 10, 2013 at 3:22 PM, Wendell Piez <wapiez(a)wendellpiez.com> wrote: > Dear Christian, > > Since a path expression consists of "one or more steps" > (http://www.w3.org/TR/xquery-30/#dt-path-expression), then isn't > 'child::node()' itself a path expression? > > I'm not asking to be pedantic. To restate the OP's question, "are > there any circumstances in BaseX under which 'child::node()' will > return a sequence of nodes not in document order?" > > If so, this is easily fixed ... child::node()/. ... but does one ever > need to take such care? (In XPath generally, the answer as I > understand it would be "no".) > > Cheers, Wendell > > Wendell Piez | http://www.wendellpiez.com > XML | XSLT | electronic publishing > Eat Your Vegetables > _____oo_________o_o___ooooo____ooooooo_^ > > > On Tue, Dec 10, 2013 at 8:02 AM, Christian Grün > <christian.gruen(a)gmail.com> wrote: >>> In BaseX, is the result of the child::node() axis always in document-order ? >> >> The nodes will be in document order if child::node() is part of a path >> expression (..../....). All the nifty details can be found in the spec >> [1]. >> >> Christian >> >> [1] http://www.w3.org/TR/xquery-30/#id-path-operator >> _______________________________________________ >> BaseX-Talk mailing list >> BaseX-Talk(a)mailman.uni-konstanz.de >> https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk

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