BaseX-Talk January 2014

basex-talk@mailman.uni-konstanz.de

43 participants
60 discussions

Unexpected error. Improper use?
by France Baril 14 Jan '14

14 Jan '14

Hi, I have code that used to work with 7.7.2, but that crashes with 7.8. I was able to create a simple piece of code that reproduces the error. I file:write the result before the db:replace. Notice how some elements have been re-ordered. To run the attached file: * Create an empty DB named 'tui-test' * Access: http://localhost:8984/tui/test-1 Details: Unexpected error: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 7.8 beta 132460f Java: Apple Inc., 1.6.0_65 OS: Mac OS X, i386 Stack Trace: java.lang.ArrayIndexOutOfBoundsException: -3 at org.basex.io.random.TableMemAccess.read1(TableMemAccess.java:44) at org.basex.data.Data.kind(Data.java:283) at org.basex.query.value.node.DBNode.parent(DBNode.java:250) at org.basex.query.value.node.ANode.nsScope(ANode.java:160) at org.basex.query.util.DataBuilder.addElem(DataBuilder.java:223) at org.basex.query.util.DataBuilder.addNode(DataBuilder.java:79) at org.basex.query.util.DataBuilder.addElem(DataBuilder.java:242) at org.basex.query.util.DataBuilder.addNode(DataBuilder.java:79) at org.basex.query.util.DataBuilder.addDoc(DataBuilder.java:101) at org.basex.query.util.DataBuilder.addNode(DataBuilder.java:78) at org.basex.query.util.DataBuilder.build(DataBuilder.java:64) at org.basex.query.util.DataBuilder.build(DataBuilder.java:54) at org.basex.query.value.node.ANode.dbCopy(ANode.java:93) at org.basex.query.up.primitives.DBNew.data(DBNew.java:104) at org.basex.query.up.primitives.DBNew.addDocs(DBNew.java:86) at org.basex.query.up.primitives.DBAdd.prepare(DBAdd.java:47) at org.basex.query.up.DatabaseUpdates.check(DatabaseUpdates.java:109) at org.basex.query.up.ContextModifier.apply(ContextModifier.java:92) at org.basex.query.up.Updates.apply(Updates.java:120) at org.basex.query.QueryContext.update(QueryContext.java:340) at org.basex.query.QueryContext.value(QueryContext.java:324) at org.basex.query.QueryContext.iter(QueryContext.java:309) at org.basex.http.restxq.RestXqResponse.create(RestXqResponse.java:72) 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) -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com (514) 572-0341

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access basex through xmldb-api -- no connection -- Invalid URI error
by Ioannis Kavvouras 14 Jan '14

14 Jan '14

Hello, I am trying to connect to a baseX (remote) server through xmldb-api following the examples in the git-hub but it fails giving Invalid Uri error. I can access the database through REST using the following url: http://<serverip>:8181/BaseX772/rest/wcs-collection/ but I cannot connect using the xmldb url xmldb:basex://<serverip>:1984/wcs-collection or xmldb:basex://<serverip>:1984/ or xmldb:basex://<serverip>:1984/rest or using the 8181 port. Regards Yannis MSc Student at the University of Athens, Greece

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Release Package
by Stefan Sechelmann 14 Jan '14

14 Jan '14

Hello, I’m trying to keep up to date with BaseX and test integrating the BaseX snapshot versions (at the moment 7.8 beta) into our environment. Here is my question: How do I build the structure that can be downloaded from the website containing all files and folders. Running e.g. mvn package yields only the API and core jar files. What am I missing? Best regards Stefan -- Stefan Sechelmann DFG-Forschungszentrum Matheon Mathematik für Schlüsseltechnologien Technische Universität Berlin Sekretariat MA 8-3 Tel. 030/314 29 486 Straße des 17. Juni 136 Fax 030/314 79 282 10623 Berlin sechel(a)math.tu-berlin.de http://page.math.tu-berlin.de/~sechel

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adding too many documents is slowing down collection operations
by Fabrice Etanchaud 14 Jan '14

14 Jan '14

Dear all, I'm working on a collection containing tens of millions of documents, updated weekly. My first guess to store these documents was to simply db:add/replace/remove them. This solution is slowing things down as the count of documents increases. For example, opening one collection takes up to 4 minutes. I believe that the document list is an in memory structure. Is there a way to speed things up, or do I have to change sides with the following guess, in order to reduce the 'physical' document list size : 1.group documents in 'logical' documents on insertion (fewer documents containing new or updated documents under a root xml element) 2. remove the old version of these documents in the previous 'logical' documents with xquery update. Has anybody already find that problem, and a workaround ? BaseX is just fantastic ! Best regards, Fabrice Etanchaud Questel/Orbit

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XMLPrague 2014
by Christian Grün 14 Jan '14

14 Jan '14

Hi all, we are happy to give you a little update on our BaseX User Meeting: It will now take place on Friday afternoon (Feb 14) fro 14:30 to 18:00! You are invited to visit our user meeting page: http://lanyrd.com/2014/basex/ We will soon disclose the full agenda. For now, we are glad to announce the first speakers (more to follow!): Gerrit Imsieke, le-tex GmbH Lars Johnsen, National Library of Norway Jean-Marc Mercier, CRIMERE Yoann Maingon, Minerva Your feedback is welcome, Christian

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Home decoration supplier from China
by Ceramic Supplier 14 Jan '14

14 Jan '14

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html serialization select option selected vanishes
by Andy Bunce 13 Jan '14

13 Jan '14

declare option output:method "html"; declare option output:html-version "5.0"; <select><option value="a" selected="selected">a</option> <option value="b" bad="bad">b</option></select> Result <!DOCTYPE html> <select> <option value="a">a</option> <option value="b" bad="bad">b</option> </select> Note bizzare vanishing of selected="selected". Seems to only happen only for option with selected="selected" for all html versions. /Andy

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Trying to use http:request to emulate curl -X PUT -T xxx.pdf
by Andy Bunce 12 Jan '14

12 Jan '14

Hi, I want to use the tika server [2] to extract text from pdfs. This working using curl as the client curl -X PUT -T aa.pdf http://localhost:9998/tika However I want to use the http module[1] I have tried: let $file:="C:\tmp\aa.pdf" let $request := <http:request method='PUT' > <http:body media-type="application/octet-stream">{ fetch:binary($file) }</http:body> </http:request> let $r:= http:send-request($request,$tika) I have tried this with various values for http:body/@method with no sucess. The content-length header from this does not match the one sent by curl. This did not work either (no body?): let $file:="C:\tmp\aa.pdf" let $request := <http:request method='PUT' > <http:body media-type="text/plain" src="{$file}"/> </http:request> let $r:= http:send-request($request,$tika) Any ideas? Regards /Andy [1] http://docs.basex.org/wiki/HTTP_Module [2] http://wiki.apache.org/tika/TikaJAXRS

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Basex
by eitan elmalam 12 Jan '14

12 Jan '14

Hello I want start to work with basex, How I can get support ? Is this the conventional way , if I have a question to send you e mail ? I want to parsing xml file with basex, full parsing all the elements and attribiutes. I want to scane the file as a tree from father to his children. I look your SimpleFSExample and did not succeed. Thanks Eitan

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Re: [basex-talk] A free-form XQuery through RESTXQ?
by Neven Jovanović 11 Jan '14

11 Jan '14

Arve, great! It was just what I needed. My function now looks like this: function page:cpxq-postman( $query as xs:string*) { let $q := xquery:eval($query, map{ '' := db:open('crobib') }) return element v { $q } }; And it works as expected. I also understand now how to call functions provided by various BaseX modules. The XPath solution will come in useful as well. Thanks to you and all the best to the whole team, Neven Neven Jovanovic University of Zagreb Hrvatska / Croatia On 11 January 2014 19:02, Arve Gengelbach <ag(a)basex.org> wrote: > Hi Neven, > > have a look at the [XQuery Module] especially at xquery:eval() or xquery:evaluate() to evaluate a given string. For security reasons you should perhaps bind your database as context, e.g. xquery:eval($query, map{ '' := db:open('crobib') }) > If you’d just want to allow XPathes, you could make use of the fn:path() function, e.g. db:open('crobib')//*[path(). = $query] > > Hope this helps > Arve > > [XQuery Module] http://docs.basex.org/wiki/XQuery_Module > > > On 11 Jan 2014, at 17:18, Neven Jovanović <filologanoga(a)gmail.com> wrote: > >> Hello, >> >> my name is Neven Jovanovic, and I have beginner's problems with BaseX >> RESTXQ interface. We'd like to have a textarea form where users would >> compose their own XQueries to be executed over our database (just >> querying it, no updating etc). I have already written a cgi Perl >> script which does this through BaseX REST interface. Now I'd like to >> do the same with RESTXQ, but I'm missing something. >> >> For testing purposes, we use the .zip version of 7.7.2 release, on >> Linux Mint Debian (locally), started with .basexhttp. Everything works >> OK, the db is there etc. >> >> Here is the form added to the existing restxq.xqm: >> >> <h3>Write an XQuery</h3> >> <p>Compose your own XQuery.</p> >> <form method="post" action="compoxq"> >> <p>XQuery:<br /> >> <textarea name="query" rows="5" cols="80"></textarea><br/> >> <input type="submit" /></p> >> </form> >> >> Here is the function added to the restxq.xqm: >> >> (:~ >> : A free-form XQuery. >> :) >> declare >> %rest:path("/compoxq") >> %rest:POST >> %rest:form-param("query","{$query}", "(no query)") >> function page:cpxq-postman( >> $query as xs:string*) >> { >> let $q := $query >> return element q { >> collection("crobib")//$q >> } >> }; >> >> Submitting the following form string: >> //*:person >> >> I get these results at <http://localhost:8984/compoxq>: >> <q> >> //*:person //*:person //*:person //*:person //*:person (lots more...) >> </q> >> >> Some query obviously is being performed, but instead of results, I get >> the query string. >> >> Appreciating your help, >> >> Neven >> >> Neven Jovanovic >> University of Zagreb >> Hrvatska / Croatia >> _______________________________________________ >> BaseX-Talk mailing list >> BaseX-Talk(a)mailman.uni-konstanz.de >> https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk >

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BaseX-Talk January 2014